Measurement of charged-particle multiplicities in gluon and quark jets in pp̄ 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 & 79 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

Research output: Contribution to journalArticle

19 Citations (Scopus)

Abstract

We report the first largely model independent measurement of charged particle multiplicities in quark and gluon jets, Nq and Ng, produced at the Fermilab Tevatron in pp̄ collisions with a center-of-mass energy of 1.8 TeV and recorded by the Collider Detector at Fermilab. The measurements are made for jets with average energies of 41 and 53 GeV by counting charged particle tracks in cones with opening angles of θc=0.28, 0.36, and 0.47 rad around the jet axis. The corresponding jet hardness Q=Ejetθc varies in the range from 12 to 25 GeV. At Q=19.2GeV, the ratio of multiplicities r=Ng/Nq is found to be 1.64±0.17, where statistical and systematic uncertainties are added in quadrature. The results are in agreement with resummed perturbative QCD calculations.

Original languageEnglish
Article number171802
JournalPhysical Review Letters
Volume94
Issue number17
DOIs
Publication statusPublished - 2005 May 6

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charged particles
quarks
collisions
particle tracks
quadratures
center of mass
cones
counting
hardness
quantum chromodynamics
energy
detectors

ASJC Scopus subject areas

  • Physics and Astronomy(all)

Cite this

Acosta, D., Affolder, T., Albrow, M. G., Ambrose, D., Amidei, D., Anikeev, K., ... Errede, D. (2005). Measurement of charged-particle multiplicities in gluon and quark jets in pp̄ collisions at s=1.8TeV. Physical Review Letters, 94(17), [171802]. https://doi.org/10.1103/PhysRevLett.94.171802

Measurement of charged-particle multiplicities in gluon and quark jets in pp̄ 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.

In: Physical Review Letters, Vol. 94, No. 17, 171802, 06.05.2005.

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 2005, 'Measurement of charged-particle multiplicities in gluon and quark jets in pp̄ collisions at s=1.8TeV', Physical Review Letters, vol. 94, no. 17, 171802. https://doi.org/10.1103/PhysRevLett.94.171802
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. / Measurement of charged-particle multiplicities in gluon and quark jets in pp̄ collisions at s=1.8TeV. In: Physical Review Letters. 2005 ; Vol. 94, No. 17.
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abstract = "We report the first largely model independent measurement of charged particle multiplicities in quark and gluon jets, Nq and Ng, produced at the Fermilab Tevatron in pp̄ collisions with a center-of-mass energy of 1.8 TeV and recorded by the Collider Detector at Fermilab. The measurements are made for jets with average energies of 41 and 53 GeV by counting charged particle tracks in cones with opening angles of θc=0.28, 0.36, and 0.47 rad around the jet axis. The corresponding jet hardness Q=Ejetθc varies in the range from 12 to 25 GeV. At Q=19.2GeV, the ratio of multiplicities r=Ng/Nq is found to be 1.64±0.17, where statistical and systematic uncertainties are added in quadrature. The results are in agreement with resummed perturbative QCD calculations.",
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TY - JOUR

T1 - Measurement of charged-particle multiplicities in gluon and quark jets in pp̄ 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.

PY - 2005/5/6

Y1 - 2005/5/6

N2 - We report the first largely model independent measurement of charged particle multiplicities in quark and gluon jets, Nq and Ng, produced at the Fermilab Tevatron in pp̄ collisions with a center-of-mass energy of 1.8 TeV and recorded by the Collider Detector at Fermilab. The measurements are made for jets with average energies of 41 and 53 GeV by counting charged particle tracks in cones with opening angles of θc=0.28, 0.36, and 0.47 rad around the jet axis. The corresponding jet hardness Q=Ejetθc varies in the range from 12 to 25 GeV. At Q=19.2GeV, the ratio of multiplicities r=Ng/Nq is found to be 1.64±0.17, where statistical and systematic uncertainties are added in quadrature. The results are in agreement with resummed perturbative QCD calculations.

AB - We report the first largely model independent measurement of charged particle multiplicities in quark and gluon jets, Nq and Ng, produced at the Fermilab Tevatron in pp̄ collisions with a center-of-mass energy of 1.8 TeV and recorded by the Collider Detector at Fermilab. The measurements are made for jets with average energies of 41 and 53 GeV by counting charged particle tracks in cones with opening angles of θc=0.28, 0.36, and 0.47 rad around the jet axis. The corresponding jet hardness Q=Ejetθc varies in the range from 12 to 25 GeV. At Q=19.2GeV, the ratio of multiplicities r=Ng/Nq is found to be 1.64±0.17, where statistical and systematic uncertainties are added in quadrature. The results are in agreement with resummed perturbative QCD calculations.

UR - http://www.scopus.com/inward/record.url?scp=27144549845&partnerID=8YFLogxK

UR - http://www.scopus.com/inward/citedby.url?scp=27144549845&partnerID=8YFLogxK

U2 - 10.1103/PhysRevLett.94.171802

DO - 10.1103/PhysRevLett.94.171802

M3 - Article

VL - 94

JO - Physical Review Letters

JF - Physical Review Letters

SN - 0031-9007

IS - 17

M1 - 171802

ER -