Measurements of bottom-antibottom azimuthal production correlations in proton-antiproton collisions at s=1.8TeV

D. Acosta, T. Affolder, M. G. Albrow, D. Ambrose, D. Amidei, K. Anikeev, J. Antos, G. Apollinari, Tetsuo Arisawa, A. Artikov, W. Ashmanskas, F. Azfar, P. Azzi-Bacchetta, N. Bacchetta, H. Bachacou, W. Badgett, A. Barbaro-Galtieri, V. E. Barnes, B. A. Barnett, S. Baroiant & 413 others M. Barone, G. Bauer, F. Bedeschi, S. Behari, S. Belforte, W. H. Bell, G. Bellettini, J. Bellinger, D. Benjamin, A. Beretvas, A. Bhatti, M. Binkley, D. Bisello, M. Bishai, R. E. Blair, C. Blocker, K. Bloom, B. Blumenfeld, A. Bocci, A. Bodek, G. Bolla, A. Bolshov, D. Bortoletto, J. Boudreau, C. Bromberg, E. Brubaker, J. Budagov, H. S. Budd, K. Burkett, G. Busetto, K. L. Byrum, S. Cabrera, M. Campbell, W. Carithers, D. Carlsmith, A. Castro, D. Cauz, A. Cerri, L. Cerrito, J. Chapman, C. Chen, Y. C. Chen, M. Chertok, G. Chiarelli, G. Chlachidze, F. Chlebana, M. L. Chu, J. Y. Chung, W. H. Chung, Y. S. Chung, C. I. Ciobanu, A. G. Clark, M. Coca, A. Connolly, M. Convery, J. Conway, M. Cordelli, J. Cranshaw, R. Culbertson, D. Dagenhart, S. D'Auria, P. De Barbaro, S. De Cecco, S. Dell'Agnello, M. Dell'Orso, S. Demers, L. Demortier, M. Deninno, D. De Pedis, P. F. Derwent, C. Dionisi, J. R. Dittmann, A. Dominguez, S. Donati, M. D'Onofrio, T. Dorigo, N. Eddy, R. Erbacher, D. Errede, S. Errede, R. Eusebi, S. Farrington, R. G. Feild, J. P. Fernandez, C. Ferretti, R. D. Field, I. Fiori, B. Flaugher, L. R. Flores-Castillo, G. W. Foster, M. Franklin, J. Friedman, I. Furic, M. Gallinaro, M. Garcia-Sciveres, A. F. Garfinkel, C. Gay, D. W. Gerdes, E. Gerstein, S. Giagu, P. Giannetti, K. Giolo, M. Giordani, P. Giromini, V. Glagolev, D. Glenzinski, M. Gold, N. Goldschmidt, J. Goldstein, G. Gomez, M. Goncharov, I. Gorelov, A. T. Goshaw, Y. Gotra, K. Goulianos, A. Gresele, C. Grosso-Pilcher, M. Guenther, J. Guimaraes Da Costa, C. Haber, S. R. Hahn, E. Halkiadakis, R. Handler, F. Happacher, K. Hara, R. M. Harris, F. Hartmann, K. Hatakeyama, J. Hauser, J. Heinrich, M. Hennecke, M. Herndon, C. Hill, A. Hocker, K. D. Hoffman, S. Hou, B. T. Huffman, R. Hughes, J. Huston, C. Issever, J. Incandela, G. Introzzi, M. Iori, A. Ivanov, Y. Iwata, B. Iyutin, E. James, M. Jones, T. Kamon, J. Kang, M. Karagoz Unel, S. Kartal, H. Kasha, Y. Kato, R. D. Kennedy, R. Kephart, B. Kilminster, D. H. Kim, H. S. Kim, M. J. Kim, S. B. Kim, S. H. Kim, T. H. Kim, Y. K. Kim, M. Kirby, L. Kirsch, S. Klimenko, P. Koehn, K. Kondo, J. Konigsberg, A. Korn, A. Korytov, J. Kroll, M. Kruse, V. Krutelyov, S. E. Kuhlmann, N. Kuznetsova, A. T. Laasanen, S. Lami, S. Lammel, J. Lancaster, K. Lannon, M. Lancaster, R. Lander, A. Lath, G. Latino, T. LeCompte, Y. Le, J. Lee, S. W. Lee, N. Leonardo, S. Leone, J. D. Lewis, K. Li, C. S. Lin, M. Lindgren, T. M. Liss, T. Liu, D. O. Litvintsev, N. S. Lockyer, A. Loginov, M. Loreti, D. Lucchesi, P. Lukens, L. Lyons, J. Lys, R. Madrak, K. Maeshima, P. Maksimovic, L. Malferrari, M. Mangano, G. Manca, M. Mariotti, M. Martin, A. Martin, V. Martin, M. Martínez, P. Mazzanti, K. S. McFarland, P. McIntyre, M. Menguzzato, A. Menzione, P. Merkel, C. Mesropian, A. Meyer, T. Miao, R. Miller, J. S. Miller, S. Miscetti, G. Mitselmakher, N. Moggi, R. Moore, T. Moulik, M. Mulhearn, A. Mukherjee, T. Muller, A. Munar, P. Murat, J. Nachtman, S. Nahn, I. Nakano, R. Napora, F. Niell, C. Nelson, T. Nelson, C. Neu, M. S. Neubauer, C. Newman-Holmes, T. Nigmanov, L. Nodulman, S. H. Oh, Y. D. Oh, T. Ohsugi, T. Okusawa, W. Orejudos, C. Pagliarone, F. Palmonari, R. Paoletti, V. Papadimitriou, J. Patrick, G. Pauletta, M. Paulini, T. Pauly, C. Paus, D. Pellett, A. Penzo, T. J. Phillips, G. Piacentino, J. Piedra, K. T. Pitts, A. Pompo, L. Pondrom, G. Pope, T. Pratt, F. Prokoshin, J. Proudfoot, F. Ptohos, O. Poukhov, G. Punzi, J. Rademacker, A. Rakitine, F. Ratnikov, H. Ray, A. Reichold, P. Renton, M. Rescigno, F. Rimondi, L. Ristori, W. J. Robertson, T. Rodrigo, S. Rolli, L. Rosenson, R. Roser, R. Rossin, C. Rott, A. Roy, A. Ruiz, D. Ryan, A. Safonov, R. St. Denis, W. K. Sakumoto, D. Saltzberg, C. Sanchez, A. Sansoni, L. Santi, S. Sarkar, P. Savard, A. Savoy-Navarro, P. Schlabach, E. E. Schmidt, M. P. Schmidt, M. Schmitt, L. Scodellaro, A. Scribano, A. Sedov, S. Seidel, Y. Seiya, A. Semenov, F. Semeria, M. D. Shapiro, P. F. Shepard, T. Shibayama, M. Shimojima, M. Shochet, A. Sidoti, A. Sill, P. Sinervo, A. J. Slaughter, K. Sliwa, F. D. Snider, R. Snihur, M. Spezziga, F. Spinella, M. Spiropulu, L. Spiegel, A. Stefanini, J. Strologas, D. Stuart, A. Sukhanov, K. Sumorok, T. Suzuki, R. Takashima, K. Takikawa, M. Tanaka, M. Tecchio, R. J. Tesarek, P. K. Teng, K. Terashi, S. Tether, J. Thom, A. S. Thompson, E. Thomson, P. Tipton, S. Tkaczyk, D. Toback, K. Tollefson, D. Tonelli, M. Tönnesmann, H. Toyoda, W. Trischuk, J. Tseng, D. Tsybychev, N. Turini, F. Ukegawa, T. Unverhau, T. Vaiciulis, A. Varganov, E. Vataga, S. Vejcik, G. Velev, G. Veramendi, R. Vidal, I. Vila, R. Vilar, I. Volobouev, M. Von Der Mey, R. G. Wagner, R. L. Wagner, W. Wagner, Z. Wan, C. Wang, M. J. Wang, S. M. Wang, B. Ward, S. Waschke, D. Waters, T. Watts, M. Weber, W. C. Wester, B. Whitehouse, A. B. Wicklund, E. Wicklund, H. H. Williams, P. Wilson, B. L. Winer, S. Wolbers, M. Wolter, S. Worm, X. Wu, F. Würthwein, U. K. Yang, W. Yao, G. P. Yeh, K. Yi, J. Yoh, T. Yoshida, I. Yu, S. Yu, J. C. Yun, L. Zanello, A. Zanetti, F. Zetti, S. Zucchelli

Research output: Contribution to journalArticle

38 Citations (Scopus)

Abstract

We have measured the azimuthal angular correlation of bb̄ production, using 86.5pb-1 of data collected by Collider Detector at Fermilab (CDF) in pp̄ collisions at s=1.8TeV during 1994-1995. In high-energy pp̄ collisions, such as at the Tevatron, bb̄ production can be schematically categorized into three mechanisms. The leading-order (LO) process is "flavor creation," where both b and b̄ quarks substantially participate in the hard scattering and result in a distinct back-to-back signal in final state. The "flavor excitation" and the "gluon splitting" processes, which appear at next-leading-order (NLO), are known to make a comparable contribution to total bb̄ cross section, while providing very different opening angle distributions from the LO process. An azimuthal opening angle between bottom and antibottom, Δ, has been used for the correlation measurement to probe the interaction creating bb̄ pairs. The Δ distribution has been obtained from two different methods. One method measures the Δ between bottom hadrons using events with two reconstructed secondary vertex tags. The other method uses bb̄→(J/ ψX)(X′) events, where the charged lepton () is an electron (e) or a muon (μ), to measure Δ between bottom quarks. The bb̄ purity is determined as a function of Δ by fitting the decay length of the J/ψ and the impact parameter of the. Both methods quantify the contribution from higher-order production mechanisms by the fraction of the bb̄ pairs produced in the same azimuthal hemisphere, ftoward. The measured ftoward values are consistent with both parton shower Monte Carlo and NLO QCD predictions.

Original languageEnglish
Article number092001
Pages (from-to)1-39
Number of pages39
JournalPhysical Review D - Particles, Fields, Gravitation and Cosmology
Volume71
Issue number9
DOIs
Publication statusPublished - 2005 May 1

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antiprotons
Collision
collisions
protons
quarks
Quarks
showers
hemispheres
angular correlation
Angle
hadrons
partons
Hemisphere
leptons
muons
purity
apexes
quantum chromodynamics
High Energy
Quantify

ASJC Scopus subject areas

  • Physics and Astronomy(all)
  • Nuclear and High Energy Physics
  • Mathematical Physics

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Measurements of bottom-antibottom azimuthal production correlations in proton-antiproton collisions at s=1.8TeV. / Acosta, D.; Affolder, T.; Albrow, M. G.; Ambrose, D.; Amidei, D.; Anikeev, K.; Antos, J.; Apollinari, G.; Arisawa, Tetsuo; Artikov, A.; Ashmanskas, W.; Azfar, F.; Azzi-Bacchetta, P.; Bacchetta, N.; Bachacou, H.; Badgett, W.; Barbaro-Galtieri, A.; Barnes, V. E.; Barnett, B. A.; Baroiant, S.; Barone, M.; Bauer, G.; Bedeschi, F.; Behari, S.; Belforte, S.; Bell, W. H.; Bellettini, G.; Bellinger, J.; Benjamin, D.; Beretvas, A.; Bhatti, A.; Binkley, M.; Bisello, D.; Bishai, M.; Blair, R. E.; Blocker, C.; Bloom, K.; Blumenfeld, B.; Bocci, A.; Bodek, A.; Bolla, G.; Bolshov, A.; Bortoletto, D.; Boudreau, J.; Bromberg, C.; Brubaker, E.; Budagov, J.; Budd, H. S.; Burkett, K.; Busetto, G.; Byrum, K. L.; Cabrera, S.; Campbell, M.; Carithers, W.; Carlsmith, D.; Castro, A.; Cauz, D.; Cerri, A.; Cerrito, L.; Chapman, J.; Chen, C.; Chen, Y. C.; Chertok, M.; Chiarelli, G.; Chlachidze, G.; Chlebana, F.; Chu, M. L.; Chung, J. Y.; Chung, W. H.; Chung, Y. S.; Ciobanu, C. I.; Clark, A. G.; Coca, M.; Connolly, A.; Convery, M.; Conway, J.; Cordelli, M.; Cranshaw, J.; Culbertson, R.; Dagenhart, D.; D'Auria, S.; De Barbaro, P.; De Cecco, S.; Dell'Agnello, S.; Dell'Orso, M.; Demers, S.; Demortier, L.; Deninno, M.; De Pedis, D.; Derwent, P. F.; Dionisi, C.; Dittmann, J. R.; Dominguez, A.; Donati, S.; D'Onofrio, M.; Dorigo, T.; Eddy, N.; Erbacher, R.; Errede, D.; Errede, S.; Eusebi, R.; Farrington, S.; Feild, R. G.; Fernandez, J. P.; Ferretti, C.; Field, R. D.; Fiori, I.; Flaugher, B.; Flores-Castillo, L. R.; Foster, G. W.; Franklin, M.; Friedman, J.; Furic, I.; Gallinaro, M.; Garcia-Sciveres, M.; Garfinkel, A. F.; Gay, C.; Gerdes, D. W.; Gerstein, E.; Giagu, S.; Giannetti, P.; Giolo, K.; Giordani, M.; Giromini, P.; Glagolev, V.; Glenzinski, D.; Gold, M.; Goldschmidt, N.; Goldstein, J.; Gomez, G.; Goncharov, M.; Gorelov, I.; Goshaw, A. T.; Gotra, Y.; Goulianos, K.; Gresele, A.; Grosso-Pilcher, C.; Guenther, M.; Guimaraes Da Costa, J.; Haber, C.; Hahn, S. R.; Halkiadakis, E.; Handler, R.; Happacher, F.; Hara, K.; Harris, R. M.; Hartmann, F.; Hatakeyama, K.; Hauser, J.; Heinrich, J.; Hennecke, M.; Herndon, M.; Hill, C.; Hocker, A.; Hoffman, K. D.; Hou, S.; Huffman, B. T.; Hughes, R.; Huston, J.; Issever, C.; Incandela, J.; Introzzi, G.; Iori, M.; Ivanov, A.; Iwata, Y.; Iyutin, B.; James, E.; Jones, M.; Kamon, T.; Kang, J.; Karagoz Unel, M.; Kartal, S.; Kasha, H.; Kato, Y.; Kennedy, R. D.; Kephart, R.; Kilminster, B.; Kim, D. H.; Kim, H. S.; Kim, M. J.; Kim, S. B.; Kim, S. H.; Kim, T. H.; Kim, Y. K.; Kirby, M.; Kirsch, L.; Klimenko, S.; Koehn, P.; Kondo, K.; Konigsberg, J.; Korn, A.; Korytov, A.; Kroll, J.; Kruse, M.; Krutelyov, V.; Kuhlmann, S. E.; Kuznetsova, N.; Laasanen, A. T.; Lami, S.; Lammel, S.; Lancaster, J.; Lannon, K.; Lancaster, M.; Lander, R.; Lath, A.; Latino, G.; LeCompte, T.; Le, Y.; Lee, J.; Lee, S. W.; Leonardo, N.; Leone, S.; Lewis, J. D.; Li, K.; Lin, C. S.; Lindgren, M.; Liss, T. M.; Liu, T.; Litvintsev, D. O.; Lockyer, N. S.; Loginov, A.; Loreti, M.; Lucchesi, D.; Lukens, P.; Lyons, L.; Lys, J.; Madrak, R.; Maeshima, K.; Maksimovic, P.; Malferrari, L.; Mangano, M.; Manca, G.; Mariotti, M.; Martin, M.; Martin, A.; Martin, V.; Martínez, M.; Mazzanti, P.; McFarland, K. S.; McIntyre, P.; Menguzzato, M.; Menzione, A.; Merkel, P.; Mesropian, C.; Meyer, A.; Miao, T.; Miller, R.; Miller, J. S.; Miscetti, S.; Mitselmakher, G.; Moggi, N.; Moore, R.; Moulik, T.; Mulhearn, M.; Mukherjee, A.; Muller, T.; Munar, A.; Murat, P.; Nachtman, J.; Nahn, S.; Nakano, I.; Napora, R.; Niell, F.; Nelson, C.; Nelson, T.; Neu, C.; Neubauer, M. S.; Newman-Holmes, C.; Nigmanov, T.; Nodulman, L.; Oh, S. H.; Oh, Y. D.; Ohsugi, T.; Okusawa, T.; Orejudos, W.; Pagliarone, C.; Palmonari, F.; Paoletti, R.; Papadimitriou, V.; Patrick, J.; Pauletta, G.; Paulini, M.; Pauly, T.; Paus, C.; Pellett, D.; Penzo, A.; Phillips, T. J.; Piacentino, G.; Piedra, J.; Pitts, K. T.; Pompo, A.; Pondrom, L.; Pope, G.; Pratt, T.; Prokoshin, F.; Proudfoot, J.; Ptohos, F.; Poukhov, O.; Punzi, G.; Rademacker, J.; Rakitine, A.; Ratnikov, F.; Ray, H.; Reichold, A.; Renton, P.; Rescigno, M.; Rimondi, F.; Ristori, L.; Robertson, W. J.; Rodrigo, T.; Rolli, S.; Rosenson, L.; Roser, R.; Rossin, R.; Rott, C.; Roy, A.; Ruiz, A.; Ryan, D.; Safonov, A.; St. Denis, R.; Sakumoto, W. K.; Saltzberg, D.; Sanchez, C.; Sansoni, A.; Santi, L.; Sarkar, S.; Savard, P.; Savoy-Navarro, A.; Schlabach, P.; Schmidt, E. E.; Schmidt, M. P.; Schmitt, M.; Scodellaro, L.; Scribano, A.; Sedov, A.; Seidel, S.; Seiya, Y.; Semenov, A.; Semeria, F.; Shapiro, M. D.; Shepard, P. F.; Shibayama, T.; Shimojima, M.; Shochet, M.; Sidoti, A.; Sill, A.; Sinervo, P.; Slaughter, A. J.; Sliwa, K.; Snider, F. D.; Snihur, R.; Spezziga, M.; Spinella, F.; Spiropulu, M.; Spiegel, L.; Stefanini, A.; Strologas, J.; Stuart, D.; Sukhanov, A.; Sumorok, K.; Suzuki, T.; Takashima, R.; Takikawa, K.; Tanaka, M.; Tecchio, M.; Tesarek, R. J.; Teng, P. K.; Terashi, K.; Tether, S.; Thom, J.; Thompson, A. S.; Thomson, E.; Tipton, P.; Tkaczyk, S.; Toback, D.; Tollefson, K.; Tonelli, D.; Tönnesmann, M.; Toyoda, H.; Trischuk, W.; Tseng, J.; Tsybychev, D.; Turini, N.; Ukegawa, F.; Unverhau, T.; Vaiciulis, T.; Varganov, A.; Vataga, E.; Vejcik, S.; Velev, G.; Veramendi, G.; Vidal, R.; Vila, I.; Vilar, R.; Volobouev, I.; Von Der Mey, M.; Wagner, R. G.; Wagner, R. L.; Wagner, W.; Wan, Z.; Wang, C.; Wang, M. J.; Wang, S. M.; Ward, B.; Waschke, S.; Waters, D.; Watts, T.; Weber, M.; Wester, W. C.; Whitehouse, B.; Wicklund, A. B.; Wicklund, E.; Williams, H. H.; Wilson, P.; Winer, B. L.; Wolbers, S.; Wolter, M.; Worm, S.; Wu, X.; Würthwein, F.; Yang, U. K.; Yao, W.; Yeh, G. P.; Yi, K.; Yoh, J.; Yoshida, T.; Yu, I.; Yu, S.; Yun, J. C.; Zanello, L.; Zanetti, A.; Zetti, F.; Zucchelli, S.

In: Physical Review D - Particles, Fields, Gravitation and Cosmology, Vol. 71, No. 9, 092001, 01.05.2005, p. 1-39.

Research output: Contribution to journalArticle

Acosta, D, Affolder, T, Albrow, MG, Ambrose, D, Amidei, D, Anikeev, K, Antos, J, Apollinari, G, Arisawa, T, Artikov, A, Ashmanskas, W, Azfar, F, Azzi-Bacchetta, P, Bacchetta, N, Bachacou, H, Badgett, W, Barbaro-Galtieri, A, Barnes, VE, Barnett, BA, Baroiant, S, Barone, M, Bauer, G, Bedeschi, F, Behari, S, Belforte, S, Bell, WH, Bellettini, G, Bellinger, J, Benjamin, D, Beretvas, A, Bhatti, A, Binkley, M, Bisello, D, Bishai, M, Blair, RE, Blocker, C, Bloom, K, Blumenfeld, B, Bocci, A, Bodek, A, Bolla, G, Bolshov, A, Bortoletto, D, Boudreau, J, Bromberg, C, Brubaker, E, Budagov, J, Budd, HS, Burkett, K, Busetto, G, Byrum, KL, Cabrera, S, Campbell, M, Carithers, W, Carlsmith, D, Castro, A, Cauz, D, Cerri, A, Cerrito, L, Chapman, J, Chen, C, Chen, YC, Chertok, M, Chiarelli, G, Chlachidze, G, Chlebana, F, Chu, ML, Chung, JY, Chung, WH, Chung, YS, Ciobanu, CI, Clark, AG, Coca, M, Connolly, A, Convery, M, Conway, J, Cordelli, M, Cranshaw, J, Culbertson, R, Dagenhart, D, D'Auria, S, De Barbaro, P, De Cecco, S, Dell'Agnello, S, Dell'Orso, M, Demers, S, Demortier, L, Deninno, M, De Pedis, D, Derwent, PF, Dionisi, C, Dittmann, JR, Dominguez, A, Donati, S, D'Onofrio, M, Dorigo, T, Eddy, N, Erbacher, R, Errede, D, Errede, S, Eusebi, R, Farrington, S, Feild, RG, Fernandez, JP, Ferretti, C, Field, RD, Fiori, I, Flaugher, B, Flores-Castillo, LR, Foster, GW, Franklin, M, Friedman, J, Furic, I, Gallinaro, M, Garcia-Sciveres, M, Garfinkel, AF, Gay, C, Gerdes, DW, Gerstein, E, Giagu, S, Giannetti, P, Giolo, K, Giordani, M, Giromini, P, Glagolev, V, Glenzinski, D, Gold, M, Goldschmidt, N, Goldstein, J, Gomez, G, Goncharov, M, Gorelov, I, Goshaw, AT, Gotra, Y, Goulianos, K, Gresele, A, Grosso-Pilcher, C, Guenther, M, Guimaraes Da Costa, J, Haber, C, Hahn, SR, Halkiadakis, E, Handler, R, Happacher, F, Hara, K, Harris, RM, Hartmann, F, Hatakeyama, K, Hauser, J, Heinrich, J, Hennecke, M, Herndon, M, Hill, C, Hocker, A, Hoffman, KD, Hou, S, Huffman, BT, Hughes, R, Huston, J, Issever, C, Incandela, J, Introzzi, G, Iori, M, Ivanov, A, Iwata, Y, Iyutin, B, James, E, Jones, M, Kamon, T, Kang, J, Karagoz Unel, M, Kartal, S, Kasha, H, Kato, Y, Kennedy, RD, Kephart, R, Kilminster, B, Kim, DH, Kim, HS, Kim, MJ, Kim, SB, Kim, SH, Kim, TH, Kim, YK, Kirby, M, Kirsch, L, Klimenko, S, Koehn, P, Kondo, K, Konigsberg, J, Korn, A, Korytov, A, Kroll, J, Kruse, M, Krutelyov, V, Kuhlmann, SE, Kuznetsova, N, Laasanen, AT, Lami, S, Lammel, S, Lancaster, J, Lannon, K, Lancaster, M, Lander, R, Lath, A, Latino, G, LeCompte, T, Le, Y, Lee, J, Lee, SW, Leonardo, N, Leone, S, Lewis, JD, Li, K, Lin, CS, Lindgren, M, Liss, TM, Liu, T, Litvintsev, DO, Lockyer, NS, Loginov, A, Loreti, M, Lucchesi, D, Lukens, P, Lyons, L, Lys, J, Madrak, R, Maeshima, K, Maksimovic, P, Malferrari, L, Mangano, M, Manca, G, Mariotti, M, Martin, M, Martin, A, Martin, V, Martínez, M, Mazzanti, P, McFarland, KS, McIntyre, P, Menguzzato, M, Menzione, A, Merkel, P, Mesropian, C, Meyer, A, Miao, T, Miller, R, Miller, JS, Miscetti, S, Mitselmakher, G, Moggi, N, Moore, R, Moulik, T, Mulhearn, M, Mukherjee, A, Muller, T, Munar, A, Murat, P, Nachtman, J, Nahn, S, Nakano, I, Napora, R, Niell, F, Nelson, C, Nelson, T, Neu, C, Neubauer, MS, Newman-Holmes, C, Nigmanov, T, Nodulman, L, Oh, SH, Oh, YD, Ohsugi, T, Okusawa, T, Orejudos, W, Pagliarone, C, Palmonari, F, Paoletti, R, Papadimitriou, V, Patrick, J, Pauletta, G, Paulini, M, Pauly, T, Paus, C, Pellett, D, Penzo, A, Phillips, TJ, Piacentino, G, Piedra, J, Pitts, KT, Pompo, A, Pondrom, L, Pope, G, Pratt, T, Prokoshin, F, Proudfoot, J, Ptohos, F, Poukhov, O, Punzi, G, Rademacker, J, Rakitine, A, Ratnikov, F, Ray, H, Reichold, A, Renton, P, Rescigno, M, Rimondi, F, Ristori, L, Robertson, WJ, Rodrigo, T, Rolli, S, Rosenson, L, Roser, R, Rossin, R, Rott, C, Roy, A, Ruiz, A, Ryan, D, Safonov, A, St. Denis, R, Sakumoto, WK, Saltzberg, D, Sanchez, C, Sansoni, A, Santi, L, Sarkar, S, Savard, P, Savoy-Navarro, A, Schlabach, P, Schmidt, EE, Schmidt, MP, Schmitt, M, Scodellaro, L, Scribano, A, Sedov, A, Seidel, S, Seiya, Y, Semenov, A, Semeria, F, Shapiro, MD, Shepard, PF, Shibayama, T, Shimojima, M, Shochet, M, Sidoti, A, Sill, A, Sinervo, P, Slaughter, AJ, Sliwa, K, Snider, FD, Snihur, R, Spezziga, M, Spinella, F, Spiropulu, M, Spiegel, L, Stefanini, A, Strologas, J, Stuart, D, Sukhanov, A, Sumorok, K, Suzuki, T, Takashima, R, Takikawa, K, Tanaka, M, Tecchio, M, Tesarek, RJ, Teng, PK, Terashi, K, Tether, S, Thom, J, Thompson, AS, Thomson, E, Tipton, P, Tkaczyk, S, Toback, D, Tollefson, K, Tonelli, D, Tönnesmann, M, Toyoda, H, Trischuk, W, Tseng, J, Tsybychev, D, Turini, N, Ukegawa, F, Unverhau, T, Vaiciulis, T, Varganov, A, Vataga, E, Vejcik, S, Velev, G, Veramendi, G, Vidal, R, Vila, I, Vilar, R, Volobouev, I, Von Der Mey, M, Wagner, RG, Wagner, RL, Wagner, W, Wan, Z, Wang, C, Wang, MJ, Wang, SM, Ward, B, Waschke, S, Waters, D, Watts, T, Weber, M, Wester, WC, Whitehouse, B, Wicklund, AB, Wicklund, E, Williams, HH, Wilson, P, Winer, BL, Wolbers, S, Wolter, M, Worm, S, Wu, X, Würthwein, F, Yang, UK, Yao, W, Yeh, GP, Yi, K, Yoh, J, Yoshida, T, Yu, I, Yu, S, Yun, JC, Zanello, L, Zanetti, A, Zetti, F & Zucchelli, S 2005, 'Measurements of bottom-antibottom azimuthal production correlations in proton-antiproton collisions at s=1.8TeV', Physical Review D - Particles, Fields, Gravitation and Cosmology, vol. 71, no. 9, 092001, pp. 1-39. https://doi.org/10.1103/PhysRevD.71.092001
Acosta, D. ; Affolder, T. ; Albrow, M. G. ; Ambrose, D. ; Amidei, D. ; Anikeev, K. ; Antos, J. ; Apollinari, G. ; Arisawa, Tetsuo ; Artikov, A. ; Ashmanskas, W. ; Azfar, F. ; Azzi-Bacchetta, P. ; Bacchetta, N. ; Bachacou, H. ; Badgett, W. ; Barbaro-Galtieri, A. ; Barnes, V. E. ; Barnett, B. A. ; Baroiant, S. ; Barone, M. ; Bauer, G. ; Bedeschi, F. ; Behari, S. ; Belforte, S. ; Bell, W. H. ; Bellettini, G. ; Bellinger, J. ; Benjamin, D. ; Beretvas, A. ; Bhatti, A. ; Binkley, M. ; Bisello, D. ; Bishai, M. ; Blair, R. E. ; Blocker, C. ; Bloom, K. ; Blumenfeld, B. ; Bocci, A. ; Bodek, A. ; Bolla, G. ; Bolshov, A. ; Bortoletto, D. ; Boudreau, J. ; Bromberg, C. ; Brubaker, E. ; Budagov, J. ; Budd, H. S. ; Burkett, K. ; Busetto, G. ; Byrum, K. L. ; Cabrera, S. ; Campbell, M. ; Carithers, W. ; Carlsmith, D. ; Castro, A. ; Cauz, D. ; Cerri, A. ; Cerrito, L. ; Chapman, J. ; Chen, C. ; Chen, Y. C. ; Chertok, M. ; Chiarelli, G. ; Chlachidze, G. ; Chlebana, F. ; Chu, M. L. ; Chung, J. Y. ; Chung, W. H. ; Chung, Y. S. ; Ciobanu, C. I. ; Clark, A. G. ; Coca, M. ; Connolly, A. ; Convery, M. ; Conway, J. ; Cordelli, M. ; Cranshaw, J. ; Culbertson, R. ; Dagenhart, D. ; D'Auria, S. ; De Barbaro, P. ; De Cecco, S. ; Dell'Agnello, S. ; Dell'Orso, M. ; Demers, S. ; Demortier, L. ; Deninno, M. ; De Pedis, D. ; Derwent, P. F. ; Dionisi, C. ; Dittmann, J. R. ; Dominguez, A. ; Donati, S. ; D'Onofrio, M. ; Dorigo, T. ; Eddy, N. ; Erbacher, R. ; Errede, D. ; Errede, S. ; Eusebi, R. ; Farrington, S. ; Feild, R. G. ; Fernandez, J. P. ; Ferretti, C. ; Field, R. D. ; Fiori, I. ; Flaugher, B. ; Flores-Castillo, L. R. ; Foster, G. W. ; Franklin, M. ; Friedman, J. ; Furic, I. ; Gallinaro, M. ; Garcia-Sciveres, M. ; Garfinkel, A. F. ; Gay, C. ; Gerdes, D. W. ; Gerstein, E. ; Giagu, S. ; Giannetti, P. ; Giolo, K. ; Giordani, M. ; Giromini, P. ; Glagolev, V. ; Glenzinski, D. ; Gold, M. ; Goldschmidt, N. ; Goldstein, J. ; Gomez, G. ; Goncharov, M. ; Gorelov, I. ; Goshaw, A. T. ; Gotra, Y. ; Goulianos, K. ; Gresele, A. ; Grosso-Pilcher, C. ; Guenther, M. ; Guimaraes Da Costa, J. ; Haber, C. ; Hahn, S. R. ; Halkiadakis, E. ; Handler, R. ; Happacher, F. ; Hara, K. ; Harris, R. M. ; Hartmann, F. ; Hatakeyama, K. ; Hauser, J. ; Heinrich, J. ; Hennecke, M. ; Herndon, M. ; Hill, C. ; Hocker, A. ; Hoffman, K. D. ; Hou, S. ; Huffman, B. T. ; Hughes, R. ; Huston, J. ; Issever, C. ; Incandela, J. ; Introzzi, G. ; Iori, M. ; Ivanov, A. ; Iwata, Y. ; Iyutin, B. ; James, E. ; Jones, M. ; Kamon, T. ; Kang, J. ; Karagoz Unel, M. ; Kartal, S. ; Kasha, H. ; Kato, Y. ; Kennedy, R. D. ; Kephart, R. ; Kilminster, B. ; Kim, D. H. ; Kim, H. S. ; Kim, M. J. ; Kim, S. B. ; Kim, S. H. ; Kim, T. H. ; Kim, Y. K. ; Kirby, M. ; Kirsch, L. ; Klimenko, S. ; Koehn, P. ; Kondo, K. ; Konigsberg, J. ; Korn, A. ; Korytov, A. ; Kroll, J. ; Kruse, M. ; Krutelyov, V. ; Kuhlmann, S. E. ; Kuznetsova, N. ; Laasanen, A. T. ; Lami, S. ; Lammel, S. ; Lancaster, J. ; Lannon, K. ; Lancaster, M. ; Lander, R. ; Lath, A. ; Latino, G. ; LeCompte, T. ; Le, Y. ; Lee, J. ; Lee, S. W. ; Leonardo, N. ; Leone, S. ; Lewis, J. D. ; Li, K. ; Lin, C. S. ; Lindgren, M. ; Liss, T. M. ; Liu, T. ; Litvintsev, D. O. ; Lockyer, N. S. ; Loginov, A. ; Loreti, M. ; Lucchesi, D. ; Lukens, P. ; Lyons, L. ; Lys, J. ; Madrak, R. ; Maeshima, K. ; Maksimovic, P. ; Malferrari, L. ; Mangano, M. ; Manca, G. ; Mariotti, M. ; Martin, M. ; Martin, A. ; Martin, V. ; Martínez, M. ; Mazzanti, P. ; McFarland, K. S. ; McIntyre, P. ; Menguzzato, M. ; Menzione, A. ; Merkel, P. ; Mesropian, C. ; Meyer, A. ; Miao, T. ; Miller, R. ; Miller, J. S. ; Miscetti, S. ; Mitselmakher, G. ; Moggi, N. ; Moore, R. ; Moulik, T. ; Mulhearn, M. ; Mukherjee, A. ; Muller, T. ; Munar, A. ; Murat, P. ; Nachtman, J. ; Nahn, S. ; Nakano, I. ; Napora, R. ; Niell, F. ; Nelson, C. ; Nelson, T. ; Neu, C. ; Neubauer, M. S. ; Newman-Holmes, C. ; Nigmanov, T. ; Nodulman, L. ; Oh, S. H. ; Oh, Y. D. ; Ohsugi, T. ; Okusawa, T. ; Orejudos, W. ; Pagliarone, C. ; Palmonari, F. ; Paoletti, R. ; Papadimitriou, V. ; Patrick, J. ; Pauletta, G. ; Paulini, M. ; Pauly, T. ; Paus, C. ; Pellett, D. ; Penzo, A. ; Phillips, T. J. ; Piacentino, G. ; Piedra, J. ; Pitts, K. T. ; Pompo, A. ; Pondrom, L. ; Pope, G. ; Pratt, T. ; Prokoshin, F. ; Proudfoot, J. ; Ptohos, F. ; Poukhov, O. ; Punzi, G. ; Rademacker, J. ; Rakitine, A. ; Ratnikov, F. ; Ray, H. ; Reichold, A. ; Renton, P. ; Rescigno, M. ; Rimondi, F. ; Ristori, L. ; Robertson, W. J. ; Rodrigo, T. ; Rolli, S. ; Rosenson, L. ; Roser, R. ; Rossin, R. ; Rott, C. ; Roy, A. ; Ruiz, A. ; Ryan, D. ; Safonov, A. ; St. Denis, R. ; Sakumoto, W. K. ; Saltzberg, D. ; Sanchez, C. ; Sansoni, A. ; Santi, L. ; Sarkar, S. ; Savard, P. ; Savoy-Navarro, A. ; Schlabach, P. ; Schmidt, E. E. ; Schmidt, M. P. ; Schmitt, M. ; Scodellaro, L. ; Scribano, A. ; Sedov, A. ; Seidel, S. ; Seiya, Y. ; Semenov, A. ; Semeria, F. ; Shapiro, M. D. ; Shepard, P. F. ; Shibayama, T. ; Shimojima, M. ; Shochet, M. ; Sidoti, A. ; Sill, A. ; Sinervo, P. ; Slaughter, A. J. ; Sliwa, K. ; Snider, F. D. ; Snihur, R. ; Spezziga, M. ; Spinella, F. ; Spiropulu, M. ; Spiegel, L. ; Stefanini, A. ; Strologas, J. ; Stuart, D. ; Sukhanov, A. ; Sumorok, K. ; Suzuki, T. ; Takashima, R. ; Takikawa, K. ; Tanaka, M. ; Tecchio, M. ; Tesarek, R. J. ; Teng, P. K. ; Terashi, K. ; Tether, S. ; Thom, J. ; Thompson, A. S. ; Thomson, E. ; Tipton, P. ; Tkaczyk, S. ; Toback, D. ; Tollefson, K. ; Tonelli, D. ; Tönnesmann, M. ; Toyoda, H. ; Trischuk, W. ; Tseng, J. ; Tsybychev, D. ; Turini, N. ; Ukegawa, F. ; Unverhau, T. ; Vaiciulis, T. ; Varganov, A. ; Vataga, E. ; Vejcik, S. ; Velev, G. ; Veramendi, G. ; Vidal, R. ; Vila, I. ; Vilar, R. ; Volobouev, I. ; Von Der Mey, M. ; Wagner, R. G. ; Wagner, R. L. ; Wagner, W. ; Wan, Z. ; Wang, C. ; Wang, M. J. ; Wang, S. M. ; Ward, B. ; Waschke, S. ; Waters, D. ; Watts, T. ; Weber, M. ; Wester, W. C. ; Whitehouse, B. ; Wicklund, A. B. ; Wicklund, E. ; Williams, H. H. ; Wilson, P. ; Winer, B. L. ; Wolbers, S. ; Wolter, M. ; Worm, S. ; Wu, X. ; Würthwein, F. ; Yang, U. K. ; Yao, W. ; Yeh, G. P. ; Yi, K. ; Yoh, J. ; Yoshida, T. ; Yu, I. ; Yu, S. ; Yun, J. C. ; Zanello, L. ; Zanetti, A. ; Zetti, F. ; Zucchelli, S. / Measurements of bottom-antibottom azimuthal production correlations in proton-antiproton collisions at s=1.8TeV. In: Physical Review D - Particles, Fields, Gravitation and Cosmology. 2005 ; Vol. 71, No. 9. pp. 1-39.
@article{d851b5a3dbab4ad188709887936df891,
title = "Measurements of bottom-antibottom azimuthal production correlations in proton-antiproton collisions at s=1.8TeV",
abstract = "We have measured the azimuthal angular correlation of bb̄ production, using 86.5pb-1 of data collected by Collider Detector at Fermilab (CDF) in pp̄ collisions at s=1.8TeV during 1994-1995. In high-energy pp̄ collisions, such as at the Tevatron, bb̄ production can be schematically categorized into three mechanisms. The leading-order (LO) process is {"}flavor creation,{"} where both b and b̄ quarks substantially participate in the hard scattering and result in a distinct back-to-back signal in final state. The {"}flavor excitation{"} and the {"}gluon splitting{"} processes, which appear at next-leading-order (NLO), are known to make a comparable contribution to total bb̄ cross section, while providing very different opening angle distributions from the LO process. An azimuthal opening angle between bottom and antibottom, Δ, has been used for the correlation measurement to probe the interaction creating bb̄ pairs. The Δ distribution has been obtained from two different methods. One method measures the Δ between bottom hadrons using events with two reconstructed secondary vertex tags. The other method uses bb̄→(J/ ψX)(X′) events, where the charged lepton () is an electron (e) or a muon (μ), to measure Δ between bottom quarks. The bb̄ purity is determined as a function of Δ by fitting the decay length of the J/ψ and the impact parameter of the. Both methods quantify the contribution from higher-order production mechanisms by the fraction of the bb̄ pairs produced in the same azimuthal hemisphere, ftoward. The measured ftoward values are consistent with both parton shower Monte Carlo and NLO QCD predictions.",
author = "D. Acosta and T. Affolder and Albrow, {M. G.} and D. Ambrose and D. Amidei and K. Anikeev and J. Antos and G. Apollinari and Tetsuo Arisawa and A. Artikov and W. Ashmanskas and F. Azfar and P. Azzi-Bacchetta and N. Bacchetta and H. Bachacou and W. Badgett and A. Barbaro-Galtieri and Barnes, {V. E.} and Barnett, {B. A.} and S. Baroiant and M. Barone and G. Bauer and F. Bedeschi and S. Behari and S. Belforte and Bell, {W. H.} and G. Bellettini and J. Bellinger and D. Benjamin and A. Beretvas and A. Bhatti and M. Binkley and D. Bisello and M. Bishai and Blair, {R. E.} and C. Blocker and K. Bloom and B. Blumenfeld and A. Bocci and A. Bodek and G. Bolla and A. Bolshov and D. Bortoletto and J. Boudreau and C. Bromberg and E. Brubaker and J. Budagov and Budd, {H. S.} and K. Burkett and G. Busetto and Byrum, {K. L.} and S. Cabrera and M. Campbell and W. Carithers and D. Carlsmith and A. Castro and D. Cauz and A. Cerri and L. Cerrito and J. Chapman and C. Chen and Chen, {Y. C.} and M. Chertok and G. Chiarelli and G. Chlachidze and F. Chlebana and Chu, {M. L.} and Chung, {J. Y.} and Chung, {W. H.} and Chung, {Y. S.} and Ciobanu, {C. I.} and Clark, {A. G.} and M. Coca and A. Connolly and M. Convery and J. Conway and M. Cordelli and J. Cranshaw and R. Culbertson and D. Dagenhart and S. D'Auria and {De Barbaro}, P. and {De Cecco}, S. and S. Dell'Agnello and M. Dell'Orso and S. Demers and L. Demortier and M. Deninno and {De Pedis}, D. and Derwent, {P. F.} and C. Dionisi and Dittmann, {J. R.} and A. Dominguez and S. Donati and M. D'Onofrio and T. Dorigo and N. Eddy and R. Erbacher and D. Errede and S. Errede and R. Eusebi and S. Farrington and Feild, {R. G.} and Fernandez, {J. P.} and C. Ferretti and Field, {R. D.} and I. Fiori and B. Flaugher and Flores-Castillo, {L. R.} and Foster, {G. W.} and M. Franklin and J. Friedman and I. Furic and M. Gallinaro and M. Garcia-Sciveres and Garfinkel, {A. F.} and C. Gay and Gerdes, {D. W.} and E. Gerstein and S. Giagu and P. Giannetti and K. Giolo and M. Giordani and P. Giromini and V. Glagolev and D. Glenzinski and M. Gold and N. Goldschmidt and J. Goldstein and G. Gomez and M. Goncharov and I. Gorelov and Goshaw, {A. T.} and Y. Gotra and K. Goulianos and A. Gresele and C. Grosso-Pilcher and M. Guenther and {Guimaraes Da Costa}, J. and C. Haber and Hahn, {S. R.} and E. Halkiadakis and R. Handler and F. Happacher and K. Hara and Harris, {R. M.} and F. Hartmann and K. Hatakeyama and J. Hauser and J. Heinrich and M. Hennecke and M. Herndon and C. Hill and A. Hocker and Hoffman, {K. D.} and S. Hou and Huffman, {B. T.} and R. Hughes and J. Huston and C. Issever and J. Incandela and G. Introzzi and M. Iori and A. Ivanov and Y. Iwata and B. Iyutin and E. James and M. Jones and T. Kamon and J. Kang and {Karagoz Unel}, M. and S. Kartal and H. Kasha and Y. Kato and Kennedy, {R. D.} and R. Kephart and B. Kilminster and Kim, {D. H.} and Kim, {H. S.} and Kim, {M. J.} and Kim, {S. B.} and Kim, {S. H.} and Kim, {T. H.} and Kim, {Y. K.} and M. Kirby and L. Kirsch and S. Klimenko and P. Koehn and K. Kondo and J. Konigsberg and A. Korn and A. Korytov and J. Kroll and M. Kruse and V. Krutelyov and Kuhlmann, {S. E.} and N. Kuznetsova and Laasanen, {A. T.} and S. Lami and S. Lammel and J. Lancaster and K. Lannon and M. Lancaster and R. Lander and A. Lath and G. Latino and T. LeCompte and Y. Le and J. Lee and Lee, {S. W.} and N. Leonardo and S. Leone and Lewis, {J. D.} and K. Li and Lin, {C. S.} and M. Lindgren and Liss, {T. M.} and T. Liu and Litvintsev, {D. O.} and Lockyer, {N. S.} and A. Loginov and M. Loreti and D. Lucchesi and P. Lukens and L. Lyons and J. Lys and R. Madrak and K. Maeshima and P. Maksimovic and L. Malferrari and M. Mangano and G. Manca and M. Mariotti and M. Martin and A. Martin and V. Martin and M. Mart{\'i}nez and P. Mazzanti and McFarland, {K. S.} and P. McIntyre and M. Menguzzato and A. Menzione and P. Merkel and C. Mesropian and A. Meyer and T. Miao and R. Miller and Miller, {J. S.} and S. Miscetti and G. Mitselmakher and N. Moggi and R. Moore and T. Moulik and M. Mulhearn and A. Mukherjee and T. Muller and A. Munar and P. Murat and J. Nachtman and S. Nahn and I. Nakano and R. Napora and F. Niell and C. Nelson and T. Nelson and C. Neu and Neubauer, {M. S.} and C. Newman-Holmes and T. Nigmanov and L. Nodulman and Oh, {S. H.} and Oh, {Y. D.} and T. Ohsugi and T. Okusawa and W. Orejudos and C. Pagliarone and F. Palmonari and R. Paoletti and V. Papadimitriou and J. Patrick and G. Pauletta and M. Paulini and T. Pauly and C. Paus and D. Pellett and A. Penzo and Phillips, {T. J.} and G. Piacentino and J. Piedra and Pitts, {K. T.} and A. Pompo and L. Pondrom and G. Pope and T. Pratt and F. Prokoshin and J. Proudfoot and F. Ptohos and O. Poukhov and G. Punzi and J. Rademacker and A. Rakitine and F. Ratnikov and H. Ray and A. Reichold and P. Renton and M. Rescigno and F. Rimondi and L. Ristori and Robertson, {W. J.} and T. Rodrigo and S. Rolli and L. Rosenson and R. Roser and R. Rossin and C. Rott and A. Roy and A. Ruiz and D. Ryan and A. Safonov and {St. Denis}, R. and Sakumoto, {W. K.} and D. Saltzberg and C. Sanchez and A. Sansoni and L. Santi and S. Sarkar and P. Savard and A. Savoy-Navarro and P. Schlabach and Schmidt, {E. E.} and Schmidt, {M. P.} and M. Schmitt and L. Scodellaro and A. Scribano and A. Sedov and S. Seidel and Y. Seiya and A. Semenov and F. Semeria and Shapiro, {M. D.} and Shepard, {P. F.} and T. Shibayama and M. Shimojima and M. Shochet and A. Sidoti and A. Sill and P. Sinervo and Slaughter, {A. J.} and K. Sliwa and Snider, {F. D.} and R. Snihur and M. Spezziga and F. Spinella and M. Spiropulu and L. Spiegel and A. Stefanini and J. Strologas and D. Stuart and A. Sukhanov and K. Sumorok and T. Suzuki and R. Takashima and K. Takikawa and M. Tanaka and M. Tecchio and Tesarek, {R. J.} and Teng, {P. K.} and K. Terashi and S. Tether and J. Thom and Thompson, {A. S.} and E. Thomson and P. Tipton and S. Tkaczyk and D. Toback and K. Tollefson and D. Tonelli and M. T{\"o}nnesmann and H. Toyoda and W. Trischuk and J. Tseng and D. Tsybychev and N. Turini and F. Ukegawa and T. Unverhau and T. Vaiciulis and A. Varganov and E. Vataga and S. Vejcik and G. Velev and G. Veramendi and R. Vidal and I. Vila and R. Vilar and I. Volobouev and {Von Der Mey}, M. and Wagner, {R. G.} and Wagner, {R. L.} and W. Wagner and Z. Wan and C. Wang and Wang, {M. J.} and Wang, {S. M.} and B. Ward and S. Waschke and D. Waters and T. Watts and M. Weber and Wester, {W. C.} and B. Whitehouse and Wicklund, {A. B.} and E. Wicklund and Williams, {H. H.} and P. Wilson and Winer, {B. L.} and S. Wolbers and M. Wolter and S. Worm and X. Wu and F. W{\"u}rthwein and Yang, {U. K.} and W. Yao and Yeh, {G. P.} and K. Yi and J. Yoh and T. Yoshida and I. Yu and S. Yu and Yun, {J. C.} and L. Zanello and A. Zanetti and F. Zetti and S. Zucchelli",
year = "2005",
month = "5",
day = "1",
doi = "10.1103/PhysRevD.71.092001",
language = "English",
volume = "71",
pages = "1--39",
journal = "Physical review D: Particles and fields",
issn = "0556-2821",
publisher = "American Institute of Physics Publising LLC",
number = "9",

}

TY - JOUR

T1 - Measurements of bottom-antibottom azimuthal production correlations in proton-antiproton collisions at s=1.8TeV

AU - Acosta, D.

AU - Affolder, T.

AU - Albrow, M. G.

AU - Ambrose, D.

AU - Amidei, D.

AU - Anikeev, K.

AU - Antos, J.

AU - Apollinari, G.

AU - Arisawa, Tetsuo

AU - Artikov, A.

AU - Ashmanskas, W.

AU - Azfar, F.

AU - Azzi-Bacchetta, P.

AU - Bacchetta, N.

AU - Bachacou, H.

AU - Badgett, W.

AU - Barbaro-Galtieri, A.

AU - Barnes, V. E.

AU - Barnett, B. A.

AU - Baroiant, S.

AU - Barone, M.

AU - Bauer, G.

AU - Bedeschi, F.

AU - Behari, S.

AU - Belforte, S.

AU - Bell, W. H.

AU - Bellettini, G.

AU - Bellinger, J.

AU - Benjamin, D.

AU - Beretvas, A.

AU - Bhatti, A.

AU - Binkley, M.

AU - Bisello, D.

AU - Bishai, M.

AU - Blair, R. E.

AU - Blocker, C.

AU - Bloom, K.

AU - Blumenfeld, B.

AU - Bocci, A.

AU - Bodek, A.

AU - Bolla, G.

AU - Bolshov, A.

AU - Bortoletto, D.

AU - Boudreau, J.

AU - Bromberg, C.

AU - Brubaker, E.

AU - Budagov, J.

AU - Budd, H. S.

AU - Burkett, K.

AU - Busetto, G.

AU - Byrum, K. L.

AU - Cabrera, S.

AU - Campbell, M.

AU - Carithers, W.

AU - Carlsmith, D.

AU - Castro, A.

AU - Cauz, D.

AU - Cerri, A.

AU - Cerrito, L.

AU - Chapman, J.

AU - Chen, C.

AU - Chen, Y. C.

AU - Chertok, M.

AU - Chiarelli, G.

AU - Chlachidze, G.

AU - Chlebana, F.

AU - Chu, M. L.

AU - Chung, J. Y.

AU - Chung, W. H.

AU - Chung, Y. S.

AU - Ciobanu, C. I.

AU - Clark, A. G.

AU - Coca, M.

AU - Connolly, A.

AU - Convery, M.

AU - Conway, J.

AU - Cordelli, M.

AU - Cranshaw, J.

AU - Culbertson, R.

AU - Dagenhart, D.

AU - D'Auria, S.

AU - De Barbaro, P.

AU - De Cecco, S.

AU - Dell'Agnello, S.

AU - Dell'Orso, M.

AU - Demers, S.

AU - Demortier, L.

AU - Deninno, M.

AU - De Pedis, D.

AU - Derwent, P. F.

AU - Dionisi, C.

AU - Dittmann, J. R.

AU - Dominguez, A.

AU - Donati, S.

AU - D'Onofrio, M.

AU - Dorigo, T.

AU - Eddy, N.

AU - Erbacher, R.

AU - Errede, D.

AU - Errede, S.

AU - Eusebi, R.

AU - Farrington, S.

AU - Feild, R. G.

AU - Fernandez, J. P.

AU - Ferretti, C.

AU - Field, R. D.

AU - Fiori, I.

AU - Flaugher, B.

AU - Flores-Castillo, L. R.

AU - Foster, G. W.

AU - Franklin, M.

AU - Friedman, J.

AU - Furic, I.

AU - Gallinaro, M.

AU - Garcia-Sciveres, M.

AU - Garfinkel, A. F.

AU - Gay, C.

AU - Gerdes, D. W.

AU - Gerstein, E.

AU - Giagu, S.

AU - Giannetti, P.

AU - Giolo, K.

AU - Giordani, M.

AU - Giromini, P.

AU - Glagolev, V.

AU - Glenzinski, D.

AU - Gold, M.

AU - Goldschmidt, N.

AU - Goldstein, J.

AU - Gomez, G.

AU - Goncharov, M.

AU - Gorelov, I.

AU - Goshaw, A. T.

AU - Gotra, Y.

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PY - 2005/5/1

Y1 - 2005/5/1

N2 - We have measured the azimuthal angular correlation of bb̄ production, using 86.5pb-1 of data collected by Collider Detector at Fermilab (CDF) in pp̄ collisions at s=1.8TeV during 1994-1995. In high-energy pp̄ collisions, such as at the Tevatron, bb̄ production can be schematically categorized into three mechanisms. The leading-order (LO) process is "flavor creation," where both b and b̄ quarks substantially participate in the hard scattering and result in a distinct back-to-back signal in final state. The "flavor excitation" and the "gluon splitting" processes, which appear at next-leading-order (NLO), are known to make a comparable contribution to total bb̄ cross section, while providing very different opening angle distributions from the LO process. An azimuthal opening angle between bottom and antibottom, Δ, has been used for the correlation measurement to probe the interaction creating bb̄ pairs. The Δ distribution has been obtained from two different methods. One method measures the Δ between bottom hadrons using events with two reconstructed secondary vertex tags. The other method uses bb̄→(J/ ψX)(X′) events, where the charged lepton () is an electron (e) or a muon (μ), to measure Δ between bottom quarks. The bb̄ purity is determined as a function of Δ by fitting the decay length of the J/ψ and the impact parameter of the. Both methods quantify the contribution from higher-order production mechanisms by the fraction of the bb̄ pairs produced in the same azimuthal hemisphere, ftoward. The measured ftoward values are consistent with both parton shower Monte Carlo and NLO QCD predictions.

AB - We have measured the azimuthal angular correlation of bb̄ production, using 86.5pb-1 of data collected by Collider Detector at Fermilab (CDF) in pp̄ collisions at s=1.8TeV during 1994-1995. In high-energy pp̄ collisions, such as at the Tevatron, bb̄ production can be schematically categorized into three mechanisms. The leading-order (LO) process is "flavor creation," where both b and b̄ quarks substantially participate in the hard scattering and result in a distinct back-to-back signal in final state. The "flavor excitation" and the "gluon splitting" processes, which appear at next-leading-order (NLO), are known to make a comparable contribution to total bb̄ cross section, while providing very different opening angle distributions from the LO process. An azimuthal opening angle between bottom and antibottom, Δ, has been used for the correlation measurement to probe the interaction creating bb̄ pairs. The Δ distribution has been obtained from two different methods. One method measures the Δ between bottom hadrons using events with two reconstructed secondary vertex tags. The other method uses bb̄→(J/ ψX)(X′) events, where the charged lepton () is an electron (e) or a muon (μ), to measure Δ between bottom quarks. The bb̄ purity is determined as a function of Δ by fitting the decay length of the J/ψ and the impact parameter of the. Both methods quantify the contribution from higher-order production mechanisms by the fraction of the bb̄ pairs produced in the same azimuthal hemisphere, ftoward. The measured ftoward values are consistent with both parton shower Monte Carlo and NLO QCD predictions.

UR - http://www.scopus.com/inward/record.url?scp=33749159214&partnerID=8YFLogxK

UR - http://www.scopus.com/inward/citedby.url?scp=33749159214&partnerID=8YFLogxK

U2 - 10.1103/PhysRevD.71.092001

DO - 10.1103/PhysRevD.71.092001

M3 - Article

VL - 71

SP - 1

EP - 39

JO - Physical review D: Particles and fields

JF - Physical review D: Particles and fields

SN - 0556-2821

IS - 9

M1 - 092001

ER -