Search for neutral Higgs bosons in Z0 decays using the OPAL detector at LEP

G. Alexander, J. Allison, N. Altekamp, K. Ametewee, K. J. Anderson, S. Anderson, S. Arcelli, S. Asai, D. Axen, G. Azuelos, A. H. Ball, E. Barberio, R. J. Barlow, R. Bartoldus, J. R. Batley, J. Bechtluft, C. Beeston, T. Behnke, A. N. Bell, K. W. BellG. Bella, S. Bentvelsen, P. Berlich, S. Bethke, O. Biebel, V. Blobel, I. J. Bloodworm, J. E. Bloomer, M. Bobinski, P. Bock, H. M. Bosch, M. Boutemeur, B. T. Bouwens, S. Braibant, R. M. Brown, H. J. Burckhart, C. Burgard, R. Bürgin, P. Capiluppi, R. K. Carnegie, A. A. Carter, J. R. Carter, C. Y. Chang, C. Charlesworth, D. G. Charlton, D. Chrisman, S. L. Chu, P. E.L. Clarke, I. Cohen, J. E. Conboy, O. C. Cooke, M. Cuffiani, S. Dado, C. Dallapiccola, G. M. Dallavalle, S. De Jong, L. A. Del Pozo, K. Desch, M. S. Dixit, E. Do Couto E Silva, M. Doucet, E. Duchovni, G. Duckeck, I. P. Duerdoth, J. E.G. Edwards, P. G. Estabrooks, H. G. Evans, M. Evans, F. Fabbri, P. Fath, F. Fiedler, M. Fierro, H. M. Fischer, R. Folman, D. G. Fong, M. Foucher, A. Fürtjes, P. Gagnon, A. Gaidot, J. W. Gary, J. Gascon, S. M. Gascon-Shotkin, N. I. Geddes, C. Geich-Gimbel, F. X. Gentit, T. Geralis, G. Giacomelli, P. Giacomelli, R. Giacomelli, V. Gibson, W. R. Gibson, D. M. Gingrich, D. Glenzinski, J. Goldberg, M. J. Goodrick, W. Gorn, C. Grandi, E. Gross, M. Gruwé, C. Hajdu, G. G. Hanson, M. Hansroul, M. Hapke, C. K. Hargrove, P. A. Hart, C. Hartmann, M. Hauschild, C. M. Hawkes, R. Hawkings, R. J. Hemingway, G. Herten, R. D. Heuer, M. D. Hildreth, J. C. Hill, S. J. Hillier, T. Hilse, P. R. Hobson, R. J. Homer, A. K. Honma, D. Horváth, R. Howard, R. E. Hughes-Jones, D. E. Hutchcroft, P. Igo-Kemenes, D. C. Imrie, M. R. Ingram, K. Ishii, A. Jawahery, P. W. Jeffreys, H. Jeremie, M. Jimack, A. Joly, C. R. Jones, G. Jones, M. Jones, R. W.L. Jones, U. Jost, P. Jovanovic, T. R. Junk, D. Karlen, K. Kawagoe, T. Kawamoto, R. K. Keeler, R. G. Kellogg, B. W. Kennedy, B. J. King, J. Kirk, S. Kluth, T. Kobayashi, M. Kobel, D. S. Koetke, T. P. Kokott, M. Kolrep, Sachio Komamiya, R. Kowalewski, T. Kress, P. Krieger, J. Von Krogh, P. Kyberd, G. D. Lafferty, H. Lafoux, R. Lahmann, W. P. Lai, D. Lanske, J. Lauber, S. R. Lautenschlager, J. G. Layter, D. Lazic, A. M. Lee, E. Lefebvre, D. Lellouch, J. Letts, L. Levinson, C. Lewis, S. L. Lloyd, F. K. Loebinger, G. D. Long, M. J. Losty, J. Ludwig, A. Malik, M. Mannelli, S. Marcellini, C. Markus, A. J. Martin, J. P. Martin, G. Martinez, T. Mashimo, W. Matthews, P. Mättig, W. J. McDonald, J. McKenna, E. A. Mckigney, T. J. McMahon, A. I. McNab, R. A. McPherson, F. Meijers, S. Menke, F. S. Merritt, H. Mes, J. Meyer, A. Michelini, G. Mikenberg, D. J. Miller, R. Mir, W. Mohr, A. Montanari, T. Mori, M. Morii, U. Müller, K. Nagai, I. Nakamura, H. A. Neal, B. Nellen, B. Nijjhar, R. Nisius, S. W. O'Neale, F. G. Oakham, F. Odorici, H. O. Ogren, T. Omori, M. J. Oreglia, S. Orito, J. Pálinkas, G. Pásztor, J. R. Pater, G. N. Patrick, J. Patt, M. J. Pearce, S. Petzold, P. Pfeifenschneider, J. E. Pilcher, J. Pinfold, D. E. Plane, P. Poffenberger, B. Poli, A. Posthaus, H. Przysiezniak, D. L. Rees, D. Rigby, S. A. Robins, N. Rodning, J. M. Roney, A. Rooke, E. Ros, A. M. Rossi, M. Rosvick, P. Routenburg, Y. Rozen, K. Runge, O. Runolfsson, U. Ruppel, D. R. Rust, R. Rylko, K. Sachs, E. K.G. Sarkisyan, M. Sasaki, C. Sbarra, A. D. Schaile, O. Schaile, F. Scharf, P. Scharff-Hansen, P. Schenk, B. Schmitt, S. Schmitt, M. Schröder, H. C. Schultz-Coulon, M. Schulz, M. Schumacher, P. Schütz, W. G. Scott, T. G. Shears, B. C. Shen, C. H. Shepherd-Themistocleous, P. Sherwood, G. P. Siroli, A. Sittler, A. Skillman, A. Skuja, A. M. Smith, T. J. Smith, G. A. Snow, R. Sobie, S. Söldner-Rembold, R. W. Springer, M. Sproston, A. Stahl, M. Starks, M. Steiert, K. Stephens, J. Steuerer, B. Stockhausen, D. Strom, F. Strumia, P. Szymanski, R. Tafirout, S. D. Talbot, S. Tanaka, P. Taras, S. Tarem, M. Tecchio, M. Thiergen, M. A. Thomson, E. Von Törne, S. Towers, T. Tsukamoto, E. Tsur, A. S. Turcot, M. F. Turner-Watson, P. Utzat, R. Van Kooten, G. Vasseur, M. Verzocchi, P. Vikas, M. Vincier, E. H. Vokurka, F. Wäckerle, A. Wagner, C. P. Ward, D. R. Ward, J. J. Ward, P. M. Watkins, A. T. Watson, N. K. Watson, P. Weber, P. S. Wells, N. Wermes, J. S. White, B. Wilkens, G. W. Wilson, J. A. Wilson, G. Wolf, S. Wotton, T. R. Wyatt, S. Yamashita, G. Yekutieli, V. Zacek

Research output: Contribution to journalArticle

32 Citations (Scopus)

Abstract

A search for neutral Higgs bosons has been performed using the full sample of Z0 decays collected by the OPAL detector at LEP up to 1995. The data were taken at centre-of-mass energies between 88 GeV and 95 GeV and correspond to an integrated luminosity of approximately 160 pb-1. The present search addresses the processes Z0 → H0Z* and h0Z*, where H0 is the Higgs boson predicted by the Standard Model and h0 the lightest neutral scalar Higgs boson predicted in the framework of the Minimal Supersymmetric Standard Model. For the virtual Z0 boson, Z*, the following decay channels are considered: Z* → νν̄, e+e- and μ+μ-. Two candidate events have been found in the νν̄H0 channel and one in the μ+μ-H0 channel. Combined with earlier searches, the present search excludes the SM Higgs boson, at the 95% confidence level (CL), from the mass range below 59.6 GeV. In the framework of the Minimal Supersymmetric Standard Model, allowing a wide range of variation for most relevant model parameters, a 95% CL lower limit of 44.3 GeV is obtained for the mass of the h0 boson. Combined with earlier direct searches for the Higgs boson pair production process Z0 → h0A0 and with measurements of the Z0 line shape, a 95% CL lower limit of 23.5 GeV is obtained for the mass of the pseudoscalar Higgs boson A0, assuming tan β≥ 1.

Original languageEnglish
Pages (from-to)189-199
Number of pages11
JournalZeitschrift fur Physik C-Particles and Fields
Volume73
Issue number2
Publication statusPublished - 1997 Jan 1
Externally publishedYes

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Bosons
Higgs bosons
Detectors
detectors
decay
confidence
bosons
pair production
center of mass
line shape
luminosity
scalars
Luminance

ASJC Scopus subject areas

  • Physics and Astronomy (miscellaneous)

Cite this

Alexander, G., Allison, J., Altekamp, N., Ametewee, K., Anderson, K. J., Anderson, S., ... Zacek, V. (1997). Search for neutral Higgs bosons in Z0 decays using the OPAL detector at LEP. Zeitschrift fur Physik C-Particles and Fields, 73(2), 189-199.

Search for neutral Higgs bosons in Z0 decays using the OPAL detector at LEP. / Alexander, G.; Allison, J.; Altekamp, N.; Ametewee, K.; Anderson, K. J.; Anderson, S.; Arcelli, S.; Asai, S.; Axen, D.; Azuelos, G.; Ball, A. H.; Barberio, E.; Barlow, R. J.; Bartoldus, R.; Batley, J. R.; Bechtluft, J.; Beeston, C.; Behnke, T.; Bell, A. N.; Bell, K. W.; Bella, G.; Bentvelsen, S.; Berlich, P.; Bethke, S.; Biebel, O.; Blobel, V.; Bloodworm, I. J.; Bloomer, J. E.; Bobinski, M.; Bock, P.; Bosch, H. M.; Boutemeur, M.; Bouwens, B. T.; Braibant, S.; Brown, R. M.; Burckhart, H. J.; Burgard, C.; Bürgin, R.; Capiluppi, P.; Carnegie, R. K.; Carter, A. A.; Carter, J. R.; Chang, C. Y.; Charlesworth, C.; Charlton, D. G.; Chrisman, D.; Chu, S. L.; Clarke, P. E.L.; Cohen, I.; Conboy, J. E.; Cooke, O. C.; Cuffiani, M.; Dado, S.; Dallapiccola, C.; Dallavalle, G. M.; De Jong, S.; Del Pozo, L. A.; Desch, K.; Dixit, M. S.; Do Couto E Silva, E.; Doucet, M.; Duchovni, E.; Duckeck, G.; Duerdoth, I. P.; Edwards, J. E.G.; Estabrooks, P. G.; Evans, H. G.; Evans, M.; Fabbri, F.; Fath, P.; Fiedler, F.; Fierro, M.; Fischer, H. M.; Folman, R.; Fong, D. G.; Foucher, M.; Fürtjes, A.; Gagnon, P.; Gaidot, A.; Gary, J. W.; Gascon, J.; Gascon-Shotkin, S. M.; Geddes, N. I.; Geich-Gimbel, C.; Gentit, F. X.; Geralis, T.; Giacomelli, G.; Giacomelli, P.; Giacomelli, R.; Gibson, V.; Gibson, W. R.; Gingrich, D. M.; Glenzinski, D.; Goldberg, J.; Goodrick, M. J.; Gorn, W.; Grandi, C.; Gross, E.; Gruwé, M.; Hajdu, C.; Hanson, G. G.; Hansroul, M.; Hapke, M.; Hargrove, C. K.; Hart, P. A.; Hartmann, C.; Hauschild, M.; Hawkes, C. M.; Hawkings, R.; Hemingway, R. J.; Herten, G.; Heuer, R. D.; Hildreth, M. D.; Hill, J. C.; Hillier, S. J.; Hilse, T.; Hobson, P. R.; Homer, R. J.; Honma, A. K.; Horváth, D.; Howard, R.; Hughes-Jones, R. E.; Hutchcroft, D. E.; Igo-Kemenes, P.; Imrie, D. C.; Ingram, M. R.; Ishii, K.; Jawahery, A.; Jeffreys, P. W.; Jeremie, H.; Jimack, M.; Joly, A.; Jones, C. R.; Jones, G.; Jones, M.; Jones, R. W.L.; Jost, U.; Jovanovic, P.; Junk, T. R.; Karlen, D.; Kawagoe, K.; Kawamoto, T.; Keeler, R. K.; Kellogg, R. G.; Kennedy, B. W.; King, B. J.; Kirk, J.; Kluth, S.; Kobayashi, T.; Kobel, M.; Koetke, D. S.; Kokott, T. P.; Kolrep, M.; Komamiya, Sachio; Kowalewski, R.; Kress, T.; Krieger, P.; Von Krogh, J.; Kyberd, P.; Lafferty, G. D.; Lafoux, H.; Lahmann, R.; Lai, W. P.; Lanske, D.; Lauber, J.; Lautenschlager, S. R.; Layter, J. G.; Lazic, D.; Lee, A. M.; Lefebvre, E.; Lellouch, D.; Letts, J.; Levinson, L.; Lewis, C.; Lloyd, S. L.; Loebinger, F. K.; Long, G. D.; Losty, M. J.; Ludwig, J.; Malik, A.; Mannelli, M.; Marcellini, S.; Markus, C.; Martin, A. J.; Martin, J. P.; Martinez, G.; Mashimo, T.; Matthews, W.; Mättig, P.; McDonald, W. J.; McKenna, J.; Mckigney, E. A.; McMahon, T. J.; McNab, A. I.; McPherson, R. A.; Meijers, F.; Menke, S.; Merritt, F. S.; Mes, H.; Meyer, J.; Michelini, A.; Mikenberg, G.; Miller, D. J.; Mir, R.; Mohr, W.; Montanari, A.; Mori, T.; Morii, M.; Müller, U.; Nagai, K.; Nakamura, I.; Neal, H. A.; Nellen, B.; Nijjhar, B.; Nisius, R.; O'Neale, S. W.; Oakham, F. G.; Odorici, F.; Ogren, H. O.; Omori, T.; Oreglia, M. J.; Orito, S.; Pálinkas, J.; Pásztor, G.; Pater, J. R.; Patrick, G. N.; Patt, J.; Pearce, M. J.; Petzold, S.; Pfeifenschneider, P.; Pilcher, J. E.; Pinfold, J.; Plane, D. E.; Poffenberger, P.; Poli, B.; Posthaus, A.; Przysiezniak, H.; Rees, D. L.; Rigby, D.; Robins, S. A.; Rodning, N.; Roney, J. M.; Rooke, A.; Ros, E.; Rossi, A. M.; Rosvick, M.; Routenburg, P.; Rozen, Y.; Runge, K.; Runolfsson, O.; Ruppel, U.; Rust, D. R.; Rylko, R.; Sachs, K.; Sarkisyan, E. K.G.; Sasaki, M.; Sbarra, C.; Schaile, A. D.; Schaile, O.; Scharf, F.; Scharff-Hansen, P.; Schenk, P.; Schmitt, B.; Schmitt, S.; Schröder, M.; Schultz-Coulon, H. C.; Schulz, M.; Schumacher, M.; Schütz, P.; Scott, W. G.; Shears, T. G.; Shen, B. C.; Shepherd-Themistocleous, C. H.; Sherwood, P.; Siroli, G. P.; Sittler, A.; Skillman, A.; Skuja, A.; Smith, A. M.; Smith, T. J.; Snow, G. A.; Sobie, R.; Söldner-Rembold, S.; Springer, R. W.; Sproston, M.; Stahl, A.; Starks, M.; Steiert, M.; Stephens, K.; Steuerer, J.; Stockhausen, B.; Strom, D.; Strumia, F.; Szymanski, P.; Tafirout, R.; Talbot, S. D.; Tanaka, S.; Taras, P.; Tarem, S.; Tecchio, M.; Thiergen, M.; Thomson, M. A.; Von Törne, E.; Towers, S.; Tsukamoto, T.; Tsur, E.; Turcot, A. S.; Turner-Watson, M. F.; Utzat, P.; Van Kooten, R.; Vasseur, G.; Verzocchi, M.; Vikas, P.; Vincier, M.; Vokurka, E. H.; Wäckerle, F.; Wagner, A.; Ward, C. P.; Ward, D. R.; Ward, J. J.; Watkins, P. M.; Watson, A. T.; Watson, N. K.; Weber, P.; Wells, P. S.; Wermes, N.; White, J. S.; Wilkens, B.; Wilson, G. W.; Wilson, J. A.; Wolf, G.; Wotton, S.; Wyatt, T. R.; Yamashita, S.; Yekutieli, G.; Zacek, V.

In: Zeitschrift fur Physik C-Particles and Fields, Vol. 73, No. 2, 01.01.1997, p. 189-199.

Research output: Contribution to journalArticle

Alexander, G, Allison, J, Altekamp, N, Ametewee, K, Anderson, KJ, Anderson, S, Arcelli, S, Asai, S, Axen, D, Azuelos, G, Ball, AH, Barberio, E, Barlow, RJ, Bartoldus, R, Batley, JR, Bechtluft, J, Beeston, C, Behnke, T, Bell, AN, Bell, KW, Bella, G, Bentvelsen, S, Berlich, P, Bethke, S, Biebel, O, Blobel, V, Bloodworm, IJ, Bloomer, JE, Bobinski, M, Bock, P, Bosch, HM, Boutemeur, M, Bouwens, BT, Braibant, S, Brown, RM, Burckhart, HJ, Burgard, C, Bürgin, R, Capiluppi, P, Carnegie, RK, Carter, AA, Carter, JR, Chang, CY, Charlesworth, C, Charlton, DG, Chrisman, D, Chu, SL, Clarke, PEL, Cohen, I, Conboy, JE, Cooke, OC, Cuffiani, M, Dado, S, Dallapiccola, C, Dallavalle, GM, De Jong, S, Del Pozo, LA, Desch, K, Dixit, MS, Do Couto E Silva, E, Doucet, M, Duchovni, E, Duckeck, G, Duerdoth, IP, Edwards, JEG, Estabrooks, PG, Evans, HG, Evans, M, Fabbri, F, Fath, P, Fiedler, F, Fierro, M, Fischer, HM, Folman, R, Fong, DG, Foucher, M, Fürtjes, A, Gagnon, P, Gaidot, A, Gary, JW, Gascon, J, Gascon-Shotkin, SM, Geddes, NI, Geich-Gimbel, C, Gentit, FX, Geralis, T, Giacomelli, G, Giacomelli, P, Giacomelli, R, Gibson, V, Gibson, WR, Gingrich, DM, Glenzinski, D, Goldberg, J, Goodrick, MJ, Gorn, W, Grandi, C, Gross, E, Gruwé, M, Hajdu, C, Hanson, GG, Hansroul, M, Hapke, M, Hargrove, CK, Hart, PA, Hartmann, C, Hauschild, M, Hawkes, CM, Hawkings, R, Hemingway, RJ, Herten, G, Heuer, RD, Hildreth, MD, Hill, JC, Hillier, SJ, Hilse, T, Hobson, PR, Homer, RJ, Honma, AK, Horváth, D, Howard, R, Hughes-Jones, RE, Hutchcroft, DE, Igo-Kemenes, P, Imrie, DC, Ingram, MR, Ishii, K, Jawahery, A, Jeffreys, PW, Jeremie, H, Jimack, M, Joly, A, Jones, CR, Jones, G, Jones, M, Jones, RWL, Jost, U, Jovanovic, P, Junk, TR, Karlen, D, Kawagoe, K, Kawamoto, T, Keeler, RK, Kellogg, RG, Kennedy, BW, King, BJ, Kirk, J, Kluth, S, Kobayashi, T, Kobel, M, Koetke, DS, Kokott, TP, Kolrep, M, Komamiya, S, Kowalewski, R, Kress, T, Krieger, P, Von Krogh, J, Kyberd, P, Lafferty, GD, Lafoux, H, Lahmann, R, Lai, WP, Lanske, D, Lauber, J, Lautenschlager, SR, Layter, JG, Lazic, D, Lee, AM, Lefebvre, E, Lellouch, D, Letts, J, Levinson, L, Lewis, C, Lloyd, SL, Loebinger, FK, Long, GD, Losty, MJ, Ludwig, J, Malik, A, Mannelli, M, Marcellini, S, Markus, C, Martin, AJ, Martin, JP, Martinez, G, Mashimo, T, Matthews, W, Mättig, P, McDonald, WJ, McKenna, J, Mckigney, EA, McMahon, TJ, McNab, AI, McPherson, RA, Meijers, F, Menke, S, Merritt, FS, Mes, H, Meyer, J, Michelini, A, Mikenberg, G, Miller, DJ, Mir, R, Mohr, W, Montanari, A, Mori, T, Morii, M, Müller, U, Nagai, K, Nakamura, I, Neal, HA, Nellen, B, Nijjhar, B, Nisius, R, O'Neale, SW, Oakham, FG, Odorici, F, Ogren, HO, Omori, T, Oreglia, MJ, Orito, S, Pálinkas, J, Pásztor, G, Pater, JR, Patrick, GN, Patt, J, Pearce, MJ, Petzold, S, Pfeifenschneider, P, Pilcher, JE, Pinfold, J, Plane, DE, Poffenberger, P, Poli, B, Posthaus, A, Przysiezniak, H, Rees, DL, Rigby, D, Robins, SA, Rodning, N, Roney, JM, Rooke, A, Ros, E, Rossi, AM, Rosvick, M, Routenburg, P, Rozen, Y, Runge, K, Runolfsson, O, Ruppel, U, Rust, DR, Rylko, R, Sachs, K, Sarkisyan, EKG, Sasaki, M, Sbarra, C, Schaile, AD, Schaile, O, Scharf, F, Scharff-Hansen, P, Schenk, P, Schmitt, B, Schmitt, S, Schröder, M, Schultz-Coulon, HC, Schulz, M, Schumacher, M, Schütz, P, Scott, WG, Shears, TG, Shen, BC, Shepherd-Themistocleous, CH, Sherwood, P, Siroli, GP, Sittler, A, Skillman, A, Skuja, A, Smith, AM, Smith, TJ, Snow, GA, Sobie, R, Söldner-Rembold, S, Springer, RW, Sproston, M, Stahl, A, Starks, M, Steiert, M, Stephens, K, Steuerer, J, Stockhausen, B, Strom, D, Strumia, F, Szymanski, P, Tafirout, R, Talbot, SD, Tanaka, S, Taras, P, Tarem, S, Tecchio, M, Thiergen, M, Thomson, MA, Von Törne, E, Towers, S, Tsukamoto, T, Tsur, E, Turcot, AS, Turner-Watson, MF, Utzat, P, Van Kooten, R, Vasseur, G, Verzocchi, M, Vikas, P, Vincier, M, Vokurka, EH, Wäckerle, F, Wagner, A, Ward, CP, Ward, DR, Ward, JJ, Watkins, PM, Watson, AT, Watson, NK, Weber, P, Wells, PS, Wermes, N, White, JS, Wilkens, B, Wilson, GW, Wilson, JA, Wolf, G, Wotton, S, Wyatt, TR, Yamashita, S, Yekutieli, G & Zacek, V 1997, 'Search for neutral Higgs bosons in Z0 decays using the OPAL detector at LEP', Zeitschrift fur Physik C-Particles and Fields, vol. 73, no. 2, pp. 189-199.
Alexander G, Allison J, Altekamp N, Ametewee K, Anderson KJ, Anderson S et al. Search for neutral Higgs bosons in Z0 decays using the OPAL detector at LEP. Zeitschrift fur Physik C-Particles and Fields. 1997 Jan 1;73(2):189-199.
Alexander, G. ; Allison, J. ; Altekamp, N. ; Ametewee, K. ; Anderson, K. J. ; Anderson, S. ; Arcelli, S. ; Asai, S. ; Axen, D. ; Azuelos, G. ; Ball, A. H. ; Barberio, E. ; Barlow, R. J. ; Bartoldus, R. ; Batley, J. R. ; Bechtluft, J. ; Beeston, C. ; Behnke, T. ; Bell, A. N. ; Bell, K. W. ; Bella, G. ; Bentvelsen, S. ; Berlich, P. ; Bethke, S. ; Biebel, O. ; Blobel, V. ; Bloodworm, I. J. ; Bloomer, J. E. ; Bobinski, M. ; Bock, P. ; Bosch, H. M. ; Boutemeur, M. ; Bouwens, B. T. ; Braibant, S. ; Brown, R. M. ; Burckhart, H. J. ; Burgard, C. ; Bürgin, R. ; Capiluppi, P. ; Carnegie, R. K. ; Carter, A. A. ; Carter, J. R. ; Chang, C. Y. ; Charlesworth, C. ; Charlton, D. G. ; Chrisman, D. ; Chu, S. L. ; Clarke, P. E.L. ; Cohen, I. ; Conboy, J. E. ; Cooke, O. C. ; Cuffiani, M. ; Dado, S. ; Dallapiccola, C. ; Dallavalle, G. M. ; De Jong, S. ; Del Pozo, L. A. ; Desch, K. ; Dixit, M. S. ; Do Couto E Silva, E. ; Doucet, M. ; Duchovni, E. ; Duckeck, G. ; Duerdoth, I. P. ; Edwards, J. E.G. ; Estabrooks, P. G. ; Evans, H. G. ; Evans, M. ; Fabbri, F. ; Fath, P. ; Fiedler, F. ; Fierro, M. ; Fischer, H. M. ; Folman, R. ; Fong, D. G. ; Foucher, M. ; Fürtjes, A. ; Gagnon, P. ; Gaidot, A. ; Gary, J. W. ; Gascon, J. ; Gascon-Shotkin, S. M. ; Geddes, N. I. ; Geich-Gimbel, C. ; Gentit, F. X. ; Geralis, T. ; Giacomelli, G. ; Giacomelli, P. ; Giacomelli, R. ; Gibson, V. ; Gibson, W. R. ; Gingrich, D. M. ; Glenzinski, D. ; Goldberg, J. ; Goodrick, M. J. ; Gorn, W. ; Grandi, C. ; Gross, E. ; Gruwé, M. ; Hajdu, C. ; Hanson, G. G. ; Hansroul, M. ; Hapke, M. ; Hargrove, C. K. ; Hart, P. A. ; Hartmann, C. ; Hauschild, M. ; Hawkes, C. M. ; Hawkings, R. ; Hemingway, R. J. ; Herten, G. ; Heuer, R. D. ; Hildreth, M. D. ; Hill, J. C. ; Hillier, S. J. ; Hilse, T. ; Hobson, P. R. ; Homer, R. J. ; Honma, A. K. ; Horváth, D. ; Howard, R. ; Hughes-Jones, R. E. ; Hutchcroft, D. E. ; Igo-Kemenes, P. ; Imrie, D. C. ; Ingram, M. R. ; Ishii, K. ; Jawahery, A. ; Jeffreys, P. W. ; Jeremie, H. ; Jimack, M. ; Joly, A. ; Jones, C. R. ; Jones, G. ; Jones, M. ; Jones, R. W.L. ; Jost, U. ; Jovanovic, P. ; Junk, T. R. ; Karlen, D. ; Kawagoe, K. ; Kawamoto, T. ; Keeler, R. K. ; Kellogg, R. G. ; Kennedy, B. W. ; King, B. J. ; Kirk, J. ; Kluth, S. ; Kobayashi, T. ; Kobel, M. ; Koetke, D. S. ; Kokott, T. P. ; Kolrep, M. ; Komamiya, Sachio ; Kowalewski, R. ; Kress, T. ; Krieger, P. ; Von Krogh, J. ; Kyberd, P. ; Lafferty, G. D. ; Lafoux, H. ; Lahmann, R. ; Lai, W. P. ; Lanske, D. ; Lauber, J. ; Lautenschlager, S. R. ; Layter, J. G. ; Lazic, D. ; Lee, A. M. ; Lefebvre, E. ; Lellouch, D. ; Letts, J. ; Levinson, L. ; Lewis, C. ; Lloyd, S. L. ; Loebinger, F. K. ; Long, G. D. ; Losty, M. J. ; Ludwig, J. ; Malik, A. ; Mannelli, M. ; Marcellini, S. ; Markus, C. ; Martin, A. J. ; Martin, J. P. ; Martinez, G. ; Mashimo, T. ; Matthews, W. ; Mättig, P. ; McDonald, W. J. ; McKenna, J. ; Mckigney, E. A. ; McMahon, T. J. ; McNab, A. I. ; McPherson, R. A. ; Meijers, F. ; Menke, S. ; Merritt, F. S. ; Mes, H. ; Meyer, J. ; Michelini, A. ; Mikenberg, G. ; Miller, D. J. ; Mir, R. ; Mohr, W. ; Montanari, A. ; Mori, T. ; Morii, M. ; Müller, U. ; Nagai, K. ; Nakamura, I. ; Neal, H. A. ; Nellen, B. ; Nijjhar, B. ; Nisius, R. ; O'Neale, S. W. ; Oakham, F. G. ; Odorici, F. ; Ogren, H. O. ; Omori, T. ; Oreglia, M. J. ; Orito, S. ; Pálinkas, J. ; Pásztor, G. ; Pater, J. R. ; Patrick, G. N. ; Patt, J. ; Pearce, M. J. ; Petzold, S. ; Pfeifenschneider, P. ; Pilcher, J. E. ; Pinfold, J. ; Plane, D. E. ; Poffenberger, P. ; Poli, B. ; Posthaus, A. ; Przysiezniak, H. ; Rees, D. L. ; Rigby, D. ; Robins, S. A. ; Rodning, N. ; Roney, J. M. ; Rooke, A. ; Ros, E. ; Rossi, A. M. ; Rosvick, M. ; Routenburg, P. ; Rozen, Y. ; Runge, K. ; Runolfsson, O. ; Ruppel, U. ; Rust, D. R. ; Rylko, R. ; Sachs, K. ; Sarkisyan, E. K.G. ; Sasaki, M. ; Sbarra, C. ; Schaile, A. D. ; Schaile, O. ; Scharf, F. ; Scharff-Hansen, P. ; Schenk, P. ; Schmitt, B. ; Schmitt, S. ; Schröder, M. ; Schultz-Coulon, H. C. ; Schulz, M. ; Schumacher, M. ; Schütz, P. ; Scott, W. G. ; Shears, T. G. ; Shen, B. C. ; Shepherd-Themistocleous, C. H. ; Sherwood, P. ; Siroli, G. P. ; Sittler, A. ; Skillman, A. ; Skuja, A. ; Smith, A. M. ; Smith, T. J. ; Snow, G. A. ; Sobie, R. ; Söldner-Rembold, S. ; Springer, R. W. ; Sproston, M. ; Stahl, A. ; Starks, M. ; Steiert, M. ; Stephens, K. ; Steuerer, J. ; Stockhausen, B. ; Strom, D. ; Strumia, F. ; Szymanski, P. ; Tafirout, R. ; Talbot, S. D. ; Tanaka, S. ; Taras, P. ; Tarem, S. ; Tecchio, M. ; Thiergen, M. ; Thomson, M. A. ; Von Törne, E. ; Towers, S. ; Tsukamoto, T. ; Tsur, E. ; Turcot, A. S. ; Turner-Watson, M. F. ; Utzat, P. ; Van Kooten, R. ; Vasseur, G. ; Verzocchi, M. ; Vikas, P. ; Vincier, M. ; Vokurka, E. H. ; Wäckerle, F. ; Wagner, A. ; Ward, C. P. ; Ward, D. R. ; Ward, J. J. ; Watkins, P. M. ; Watson, A. T. ; Watson, N. K. ; Weber, P. ; Wells, P. S. ; Wermes, N. ; White, J. S. ; Wilkens, B. ; Wilson, G. W. ; Wilson, J. A. ; Wolf, G. ; Wotton, S. ; Wyatt, T. R. ; Yamashita, S. ; Yekutieli, G. ; Zacek, V. / Search for neutral Higgs bosons in Z0 decays using the OPAL detector at LEP. In: Zeitschrift fur Physik C-Particles and Fields. 1997 ; Vol. 73, No. 2. pp. 189-199.
@article{00cfba25c91148198259c003c93202b1,
title = "Search for neutral Higgs bosons in Z0 decays using the OPAL detector at LEP",
abstract = "A search for neutral Higgs bosons has been performed using the full sample of Z0 decays collected by the OPAL detector at LEP up to 1995. The data were taken at centre-of-mass energies between 88 GeV and 95 GeV and correspond to an integrated luminosity of approximately 160 pb-1. The present search addresses the processes Z0 → H0Z* and h0Z*, where H0 is the Higgs boson predicted by the Standard Model and h0 the lightest neutral scalar Higgs boson predicted in the framework of the Minimal Supersymmetric Standard Model. For the virtual Z0 boson, Z*, the following decay channels are considered: Z* → νν̄, e+e- and μ+μ-. Two candidate events have been found in the νν̄H0 channel and one in the μ+μ-H0 channel. Combined with earlier searches, the present search excludes the SM Higgs boson, at the 95{\%} confidence level (CL), from the mass range below 59.6 GeV. In the framework of the Minimal Supersymmetric Standard Model, allowing a wide range of variation for most relevant model parameters, a 95{\%} CL lower limit of 44.3 GeV is obtained for the mass of the h0 boson. Combined with earlier direct searches for the Higgs boson pair production process Z0 → h0A0 and with measurements of the Z0 line shape, a 95{\%} CL lower limit of 23.5 GeV is obtained for the mass of the pseudoscalar Higgs boson A0, assuming tan β≥ 1.",
author = "G. Alexander and J. Allison and N. Altekamp and K. Ametewee and Anderson, {K. J.} and S. Anderson and S. Arcelli and S. Asai and D. Axen and G. Azuelos and Ball, {A. H.} and E. Barberio and Barlow, {R. J.} and R. Bartoldus and Batley, {J. R.} and J. Bechtluft and C. Beeston and T. Behnke and Bell, {A. N.} and Bell, {K. W.} and G. Bella and S. Bentvelsen and P. Berlich and S. Bethke and O. Biebel and V. Blobel and Bloodworm, {I. J.} and Bloomer, {J. E.} and M. Bobinski and P. Bock and Bosch, {H. M.} and M. Boutemeur and Bouwens, {B. T.} and S. Braibant and Brown, {R. M.} and Burckhart, {H. J.} and C. Burgard and R. B{\"u}rgin and P. Capiluppi and Carnegie, {R. K.} and Carter, {A. A.} and Carter, {J. R.} and Chang, {C. Y.} and C. Charlesworth and Charlton, {D. G.} and D. Chrisman and Chu, {S. L.} and Clarke, {P. E.L.} and I. Cohen and Conboy, {J. E.} and Cooke, {O. C.} and M. Cuffiani and S. Dado and C. Dallapiccola and Dallavalle, {G. M.} and {De Jong}, S. and {Del Pozo}, {L. A.} and K. Desch and Dixit, {M. S.} and {Do Couto E Silva}, E. and M. Doucet and E. Duchovni and G. Duckeck and Duerdoth, {I. P.} and Edwards, {J. E.G.} and Estabrooks, {P. G.} and Evans, {H. G.} and M. Evans and F. Fabbri and P. Fath and F. Fiedler and M. Fierro and Fischer, {H. M.} and R. Folman and Fong, {D. G.} and M. Foucher and A. F{\"u}rtjes and P. Gagnon and A. Gaidot and Gary, {J. W.} and J. Gascon and Gascon-Shotkin, {S. M.} and Geddes, {N. I.} and C. Geich-Gimbel and Gentit, {F. X.} and T. Geralis and G. Giacomelli and P. Giacomelli and R. Giacomelli and V. Gibson and Gibson, {W. R.} and Gingrich, {D. M.} and D. Glenzinski and J. Goldberg and Goodrick, {M. J.} and W. Gorn and C. Grandi and E. Gross and M. Gruw{\'e} and C. Hajdu and Hanson, {G. G.} and M. Hansroul and M. Hapke and Hargrove, {C. K.} and Hart, {P. A.} and C. Hartmann and M. Hauschild and Hawkes, {C. M.} and R. Hawkings and Hemingway, {R. J.} and G. Herten and Heuer, {R. D.} and Hildreth, {M. D.} and Hill, {J. C.} and Hillier, {S. J.} and T. Hilse and Hobson, {P. R.} and Homer, {R. J.} and Honma, {A. K.} and D. Horv{\'a}th and R. Howard and Hughes-Jones, {R. E.} and Hutchcroft, {D. E.} and P. Igo-Kemenes and Imrie, {D. C.} and Ingram, {M. R.} and K. Ishii and A. Jawahery and Jeffreys, {P. W.} and H. Jeremie and M. Jimack and A. Joly and Jones, {C. R.} and G. Jones and M. Jones and Jones, {R. W.L.} and U. Jost and P. Jovanovic and Junk, {T. R.} and D. Karlen and K. Kawagoe and T. Kawamoto and Keeler, {R. K.} and Kellogg, {R. G.} and Kennedy, {B. W.} and King, {B. J.} and J. Kirk and S. Kluth and T. Kobayashi and M. Kobel and Koetke, {D. S.} and Kokott, {T. P.} and M. Kolrep and Sachio Komamiya and R. Kowalewski and T. Kress and P. Krieger and {Von Krogh}, J. and P. Kyberd and Lafferty, {G. D.} and H. Lafoux and R. Lahmann and Lai, {W. P.} and D. Lanske and J. Lauber and Lautenschlager, {S. R.} and Layter, {J. G.} and D. Lazic and Lee, {A. M.} and E. Lefebvre and D. Lellouch and J. Letts and L. Levinson and C. Lewis and Lloyd, {S. L.} and Loebinger, {F. K.} and Long, {G. D.} and Losty, {M. J.} and J. Ludwig and A. Malik and M. Mannelli and S. Marcellini and C. Markus and Martin, {A. J.} and Martin, {J. P.} and G. Martinez and T. Mashimo and W. Matthews and P. M{\"a}ttig and McDonald, {W. J.} and J. McKenna and Mckigney, {E. A.} and McMahon, {T. J.} and McNab, {A. I.} and McPherson, {R. A.} and F. Meijers and S. Menke and Merritt, {F. S.} and H. Mes and J. Meyer and A. Michelini and G. Mikenberg and Miller, {D. J.} and R. Mir and W. Mohr and A. Montanari and T. Mori and M. Morii and U. M{\"u}ller and K. Nagai and I. Nakamura and Neal, {H. A.} and B. Nellen and B. Nijjhar and R. Nisius and O'Neale, {S. W.} and Oakham, {F. G.} and F. Odorici and Ogren, {H. O.} and T. Omori and Oreglia, {M. J.} and S. Orito and J. P{\'a}linkas and G. P{\'a}sztor and Pater, {J. R.} and Patrick, {G. N.} and J. Patt and Pearce, {M. J.} and S. Petzold and P. Pfeifenschneider and Pilcher, {J. E.} and J. Pinfold and Plane, {D. E.} and P. Poffenberger and B. Poli and A. Posthaus and H. Przysiezniak and Rees, {D. L.} and D. Rigby and Robins, {S. A.} and N. Rodning and Roney, {J. M.} and A. Rooke and E. Ros and Rossi, {A. M.} and M. Rosvick and P. Routenburg and Y. Rozen and K. Runge and O. Runolfsson and U. Ruppel and Rust, {D. R.} and R. Rylko and K. Sachs and Sarkisyan, {E. K.G.} and M. Sasaki and C. Sbarra and Schaile, {A. D.} and O. Schaile and F. Scharf and P. Scharff-Hansen and P. Schenk and B. Schmitt and S. Schmitt and M. Schr{\"o}der and Schultz-Coulon, {H. C.} and M. Schulz and M. Schumacher and P. Sch{\"u}tz and Scott, {W. G.} and Shears, {T. G.} and Shen, {B. C.} and Shepherd-Themistocleous, {C. H.} and P. Sherwood and Siroli, {G. P.} and A. Sittler and A. Skillman and A. Skuja and Smith, {A. M.} and Smith, {T. J.} and Snow, {G. A.} and R. Sobie and S. S{\"o}ldner-Rembold and Springer, {R. W.} and M. Sproston and A. Stahl and M. Starks and M. Steiert and K. Stephens and J. Steuerer and B. Stockhausen and D. Strom and F. Strumia and P. Szymanski and R. Tafirout and Talbot, {S. D.} and S. Tanaka and P. Taras and S. Tarem and M. Tecchio and M. Thiergen and Thomson, {M. A.} and {Von T{\"o}rne}, E. and S. Towers and T. Tsukamoto and E. Tsur and Turcot, {A. S.} and Turner-Watson, {M. F.} and P. Utzat and {Van Kooten}, R. and G. Vasseur and M. Verzocchi and P. Vikas and M. Vincier and Vokurka, {E. H.} and F. W{\"a}ckerle and A. Wagner and Ward, {C. P.} and Ward, {D. R.} and Ward, {J. J.} and Watkins, {P. M.} and Watson, {A. T.} and Watson, {N. K.} and P. Weber and Wells, {P. S.} and N. Wermes and White, {J. S.} and B. Wilkens and Wilson, {G. W.} and Wilson, {J. A.} and G. Wolf and S. Wotton and Wyatt, {T. R.} and S. Yamashita and G. Yekutieli and V. Zacek",
year = "1997",
month = "1",
day = "1",
language = "English",
volume = "73",
pages = "189--199",
journal = "European Physical Journal C",
issn = "1434-6044",
publisher = "Springer New York",
number = "2",

}

TY - JOUR

T1 - Search for neutral Higgs bosons in Z0 decays using the OPAL detector at LEP

AU - Alexander, G.

AU - Allison, J.

AU - Altekamp, N.

AU - Ametewee, K.

AU - Anderson, K. J.

AU - Anderson, S.

AU - Arcelli, S.

AU - Asai, S.

AU - Axen, D.

AU - Azuelos, G.

AU - Ball, A. H.

AU - Barberio, E.

AU - Barlow, R. J.

AU - Bartoldus, R.

AU - Batley, J. R.

AU - Bechtluft, J.

AU - Beeston, C.

AU - Behnke, T.

AU - Bell, A. N.

AU - Bell, K. W.

AU - Bella, G.

AU - Bentvelsen, S.

AU - Berlich, P.

AU - Bethke, S.

AU - Biebel, O.

AU - Blobel, V.

AU - Bloodworm, I. J.

AU - Bloomer, J. E.

AU - Bobinski, M.

AU - Bock, P.

AU - Bosch, H. M.

AU - Boutemeur, M.

AU - Bouwens, B. T.

AU - Braibant, S.

AU - Brown, R. M.

AU - Burckhart, H. J.

AU - Burgard, C.

AU - Bürgin, R.

AU - Capiluppi, P.

AU - Carnegie, R. K.

AU - Carter, A. A.

AU - Carter, J. R.

AU - Chang, C. Y.

AU - Charlesworth, C.

AU - Charlton, D. G.

AU - Chrisman, D.

AU - Chu, S. L.

AU - Clarke, P. E.L.

AU - Cohen, I.

AU - Conboy, J. E.

AU - Cooke, O. C.

AU - Cuffiani, M.

AU - Dado, S.

AU - Dallapiccola, C.

AU - Dallavalle, G. M.

AU - De Jong, S.

AU - Del Pozo, L. A.

AU - Desch, K.

AU - Dixit, M. S.

AU - Do Couto E Silva, E.

AU - Doucet, M.

AU - Duchovni, E.

AU - Duckeck, G.

AU - Duerdoth, I. P.

AU - Edwards, J. E.G.

AU - Estabrooks, P. G.

AU - Evans, H. G.

AU - Evans, M.

AU - Fabbri, F.

AU - Fath, P.

AU - Fiedler, F.

AU - Fierro, M.

AU - Fischer, H. M.

AU - Folman, R.

AU - Fong, D. G.

AU - Foucher, M.

AU - Fürtjes, A.

AU - Gagnon, P.

AU - Gaidot, A.

AU - Gary, J. W.

AU - Gascon, J.

AU - Gascon-Shotkin, S. M.

AU - Geddes, N. I.

AU - Geich-Gimbel, C.

AU - Gentit, F. X.

AU - Geralis, T.

AU - Giacomelli, G.

AU - Giacomelli, P.

AU - Giacomelli, R.

AU - Gibson, V.

AU - Gibson, W. R.

AU - Gingrich, D. M.

AU - Glenzinski, D.

AU - Goldberg, J.

AU - Goodrick, M. J.

AU - Gorn, W.

AU - Grandi, C.

AU - Gross, E.

AU - Gruwé, M.

AU - Hajdu, C.

AU - Hanson, G. G.

AU - Hansroul, M.

AU - Hapke, M.

AU - Hargrove, C. K.

AU - Hart, P. A.

AU - Hartmann, C.

AU - Hauschild, M.

AU - Hawkes, C. M.

AU - Hawkings, R.

AU - Hemingway, R. J.

AU - Herten, G.

AU - Heuer, R. D.

AU - Hildreth, M. D.

AU - Hill, J. C.

AU - Hillier, S. J.

AU - Hilse, T.

AU - Hobson, P. R.

AU - Homer, R. J.

AU - Honma, A. K.

AU - Horváth, D.

AU - Howard, R.

AU - Hughes-Jones, R. E.

AU - Hutchcroft, D. E.

AU - Igo-Kemenes, P.

AU - Imrie, D. C.

AU - Ingram, M. R.

AU - Ishii, K.

AU - Jawahery, A.

AU - Jeffreys, P. W.

AU - Jeremie, H.

AU - Jimack, M.

AU - Joly, A.

AU - Jones, C. R.

AU - Jones, G.

AU - Jones, M.

AU - Jones, R. W.L.

AU - Jost, U.

AU - Jovanovic, P.

AU - Junk, T. R.

AU - Karlen, D.

AU - Kawagoe, K.

AU - Kawamoto, T.

AU - Keeler, R. K.

AU - Kellogg, R. G.

AU - Kennedy, B. W.

AU - King, B. J.

AU - Kirk, J.

AU - Kluth, S.

AU - Kobayashi, T.

AU - Kobel, M.

AU - Koetke, D. S.

AU - Kokott, T. P.

AU - Kolrep, M.

AU - Komamiya, Sachio

AU - Kowalewski, R.

AU - Kress, T.

AU - Krieger, P.

AU - Von Krogh, J.

AU - Kyberd, P.

AU - Lafferty, G. D.

AU - Lafoux, H.

AU - Lahmann, R.

AU - Lai, W. P.

AU - Lanske, D.

AU - Lauber, J.

AU - Lautenschlager, S. R.

AU - Layter, J. G.

AU - Lazic, D.

AU - Lee, A. M.

AU - Lefebvre, E.

AU - Lellouch, D.

AU - Letts, J.

AU - Levinson, L.

AU - Lewis, C.

AU - Lloyd, S. L.

AU - Loebinger, F. K.

AU - Long, G. D.

AU - Losty, M. J.

AU - Ludwig, J.

AU - Malik, A.

AU - Mannelli, M.

AU - Marcellini, S.

AU - Markus, C.

AU - Martin, A. J.

AU - Martin, J. P.

AU - Martinez, G.

AU - Mashimo, T.

AU - Matthews, W.

AU - Mättig, P.

AU - McDonald, W. J.

AU - McKenna, J.

AU - Mckigney, E. A.

AU - McMahon, T. J.

AU - McNab, A. I.

AU - McPherson, R. A.

AU - Meijers, F.

AU - Menke, S.

AU - Merritt, F. S.

AU - Mes, H.

AU - Meyer, J.

AU - Michelini, A.

AU - Mikenberg, G.

AU - Miller, D. J.

AU - Mir, R.

AU - Mohr, W.

AU - Montanari, A.

AU - Mori, T.

AU - Morii, M.

AU - Müller, U.

AU - Nagai, K.

AU - Nakamura, I.

AU - Neal, H. A.

AU - Nellen, B.

AU - Nijjhar, B.

AU - Nisius, R.

AU - O'Neale, S. W.

AU - Oakham, F. G.

AU - Odorici, F.

AU - Ogren, H. O.

AU - Omori, T.

AU - Oreglia, M. J.

AU - Orito, S.

AU - Pálinkas, J.

AU - Pásztor, G.

AU - Pater, J. R.

AU - Patrick, G. N.

AU - Patt, J.

AU - Pearce, M. J.

AU - Petzold, S.

AU - Pfeifenschneider, P.

AU - Pilcher, J. E.

AU - Pinfold, J.

AU - Plane, D. E.

AU - Poffenberger, P.

AU - Poli, B.

AU - Posthaus, A.

AU - Przysiezniak, H.

AU - Rees, D. L.

AU - Rigby, D.

AU - Robins, S. A.

AU - Rodning, N.

AU - Roney, J. M.

AU - Rooke, A.

AU - Ros, E.

AU - Rossi, A. M.

AU - Rosvick, M.

AU - Routenburg, P.

AU - Rozen, Y.

AU - Runge, K.

AU - Runolfsson, O.

AU - Ruppel, U.

AU - Rust, D. R.

AU - Rylko, R.

AU - Sachs, K.

AU - Sarkisyan, E. K.G.

AU - Sasaki, M.

AU - Sbarra, C.

AU - Schaile, A. D.

AU - Schaile, O.

AU - Scharf, F.

AU - Scharff-Hansen, P.

AU - Schenk, P.

AU - Schmitt, B.

AU - Schmitt, S.

AU - Schröder, M.

AU - Schultz-Coulon, H. C.

AU - Schulz, M.

AU - Schumacher, M.

AU - Schütz, P.

AU - Scott, W. G.

AU - Shears, T. G.

AU - Shen, B. C.

AU - Shepherd-Themistocleous, C. H.

AU - Sherwood, P.

AU - Siroli, G. P.

AU - Sittler, A.

AU - Skillman, A.

AU - Skuja, A.

AU - Smith, A. M.

AU - Smith, T. J.

AU - Snow, G. A.

AU - Sobie, R.

AU - Söldner-Rembold, S.

AU - Springer, R. W.

AU - Sproston, M.

AU - Stahl, A.

AU - Starks, M.

AU - Steiert, M.

AU - Stephens, K.

AU - Steuerer, J.

AU - Stockhausen, B.

AU - Strom, D.

AU - Strumia, F.

AU - Szymanski, P.

AU - Tafirout, R.

AU - Talbot, S. D.

AU - Tanaka, S.

AU - Taras, P.

AU - Tarem, S.

AU - Tecchio, M.

AU - Thiergen, M.

AU - Thomson, M. A.

AU - Von Törne, E.

AU - Towers, S.

AU - Tsukamoto, T.

AU - Tsur, E.

AU - Turcot, A. S.

AU - Turner-Watson, M. F.

AU - Utzat, P.

AU - Van Kooten, R.

AU - Vasseur, G.

AU - Verzocchi, M.

AU - Vikas, P.

AU - Vincier, M.

AU - Vokurka, E. H.

AU - Wäckerle, F.

AU - Wagner, A.

AU - Ward, C. P.

AU - Ward, D. R.

AU - Ward, J. J.

AU - Watkins, P. M.

AU - Watson, A. T.

AU - Watson, N. K.

AU - Weber, P.

AU - Wells, P. S.

AU - Wermes, N.

AU - White, J. S.

AU - Wilkens, B.

AU - Wilson, G. W.

AU - Wilson, J. A.

AU - Wolf, G.

AU - Wotton, S.

AU - Wyatt, T. R.

AU - Yamashita, S.

AU - Yekutieli, G.

AU - Zacek, V.

PY - 1997/1/1

Y1 - 1997/1/1

N2 - A search for neutral Higgs bosons has been performed using the full sample of Z0 decays collected by the OPAL detector at LEP up to 1995. The data were taken at centre-of-mass energies between 88 GeV and 95 GeV and correspond to an integrated luminosity of approximately 160 pb-1. The present search addresses the processes Z0 → H0Z* and h0Z*, where H0 is the Higgs boson predicted by the Standard Model and h0 the lightest neutral scalar Higgs boson predicted in the framework of the Minimal Supersymmetric Standard Model. For the virtual Z0 boson, Z*, the following decay channels are considered: Z* → νν̄, e+e- and μ+μ-. Two candidate events have been found in the νν̄H0 channel and one in the μ+μ-H0 channel. Combined with earlier searches, the present search excludes the SM Higgs boson, at the 95% confidence level (CL), from the mass range below 59.6 GeV. In the framework of the Minimal Supersymmetric Standard Model, allowing a wide range of variation for most relevant model parameters, a 95% CL lower limit of 44.3 GeV is obtained for the mass of the h0 boson. Combined with earlier direct searches for the Higgs boson pair production process Z0 → h0A0 and with measurements of the Z0 line shape, a 95% CL lower limit of 23.5 GeV is obtained for the mass of the pseudoscalar Higgs boson A0, assuming tan β≥ 1.

AB - A search for neutral Higgs bosons has been performed using the full sample of Z0 decays collected by the OPAL detector at LEP up to 1995. The data were taken at centre-of-mass energies between 88 GeV and 95 GeV and correspond to an integrated luminosity of approximately 160 pb-1. The present search addresses the processes Z0 → H0Z* and h0Z*, where H0 is the Higgs boson predicted by the Standard Model and h0 the lightest neutral scalar Higgs boson predicted in the framework of the Minimal Supersymmetric Standard Model. For the virtual Z0 boson, Z*, the following decay channels are considered: Z* → νν̄, e+e- and μ+μ-. Two candidate events have been found in the νν̄H0 channel and one in the μ+μ-H0 channel. Combined with earlier searches, the present search excludes the SM Higgs boson, at the 95% confidence level (CL), from the mass range below 59.6 GeV. In the framework of the Minimal Supersymmetric Standard Model, allowing a wide range of variation for most relevant model parameters, a 95% CL lower limit of 44.3 GeV is obtained for the mass of the h0 boson. Combined with earlier direct searches for the Higgs boson pair production process Z0 → h0A0 and with measurements of the Z0 line shape, a 95% CL lower limit of 23.5 GeV is obtained for the mass of the pseudoscalar Higgs boson A0, assuming tan β≥ 1.

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M3 - Article

AN - SCOPUS:0000716793

VL - 73

SP - 189

EP - 199

JO - European Physical Journal C

JF - European Physical Journal C

SN - 1434-6044

IS - 2

ER -