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Search for neutral MSSM Higgs bosons at LEP

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Abstract

The four LEP collaborations, ALEPH, DELPHI, L3 and OPAL, have searched for the neutral Higgs bosons which are predicted by the Minimal Supersymmetric standard model (MSSM). The data of the four collaborations are statistically combined and examined for their consistency with the background hypothesis and with a possible Higgs boson signal. The combined LEP data show no significant excess of events which would indicate the production of Higgs bosons. The search results are used to set upper bounds on the cross-sections of various Higgs-like event topologies. The results are interpreted within the MSSM in a number of “benchmark” models, including CP-conserving and CP-violating scenarios. These interpretations lead in all cases to large exclusions in the MSSM parameter space. Absolute limits are set on the parameter cosβ and, in some scenarios, on the masses of neutral Higgs bosons.

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References

  1. P.W. Higgs, Phys. Lett. 12, 132 (1964); Phys. Rev. Lett. 13, 508 (1964); Phys. Rev. 145, 1156 (1966); F. Englert, R. Brout, Phys. Rev. Lett. 13, 321 (1964); G.S. Guralnik, C.R. Hagen, T.W.B. Kibble, Phys. Rev. Lett. 13, 585 (1964).

    ADS  Google Scholar 

  2. S. Weinberg, Phys. Rev. Lett. 19, 1264 (1967); A. Salam, Elementary Particle Theory, ed. by N. Svartholm (Almquist and Wiksells, Stockholm, 1968), 367

    Article  ADS  Google Scholar 

  3. ALEPH, DELPHI, L3 and OPAL Collaborations, The LEP Working Group for Higgs Boson Searches, Phys. Lett. B 565, 61 (2003)

    Article  ADS  Google Scholar 

  4. J. Wess, B. Zumino, Nucl. Phys. B 70, 39 (1974); Phys. Lett. B 49, 52 (1974); P. Fayet, Phys. Lett. B 69, 489 (1977); Phys. Lett. B 84, 421 (1979); Phys. Lett. B 86, 272 (1979)

    Article  MathSciNet  ADS  Google Scholar 

  5. W. de Boer, C. Sander, Phys. Lett. B 585, 276 (2004); J.R. Ellis, S. Heinemeyer, K. Olive, G. Weiglein, JHEP 0502, 13 (2005); S. Heinemeyer, W. Hollik, G. Weiglein, hep-ph/0412214

    Article  ADS  Google Scholar 

  6. H.E. Haber, G.L. Kane, Phys. Rep. C 117, 75 (1985); J.F. Gunion, H.E. Haber, G.L. Kane, S. Dawson, The Higgs Hunter’s Guide (Addison-Wesley, 1990); H.E. Haber, Supersymmetry, Phys. Rev. D 66, 010001-895 (2002); A. Djouadi, The Anatomy of Electro-Weak Symmetry Breaking, Tome II: The Higgs boson in the Minimal Supersymmetric Model, hep-ph/0503173

    Article  ADS  Google Scholar 

  7. Y. Okada, M. Yamaguchi, T. Yanagida, Theor. Phys. 85, 1 (1991); H. Haber, R. Hempfling, Phys. Rev. Lett. 66, 1815 (1991); J. Ellis, G. Ridolfi, F. Zwirner, Phys. Lett. B 257, 83 (1991); R. Barbieri, M. Frigeni, Phys. Lett. B 258, 395 (1991); M. Carena, M. Quiros, C.E.M. Wagner, Nucl. Phys. B 461, 407 (1996); H. Haber, R. Hempfling, A. Hoang, Z. Phys. C 75, 539 (1997); S. Heinemeyer, W. Hollik, G. Weiglein, Eur. Phys. J. C 9, 343 (1999); Phys. Rev. D 58, 091701 (1998); Phys. Lett. B 440, 296 (1998); JHEP 0006, 009 (2000); J.R. Espinosa, R.-J. Zhang, Nucl. Phys. B 586, 3 (2000); A. Brignole, G. Degrassi, P. Slavich, F. Zwirner, Nucl. Phys. B 631, 195 (2002); G. Degrassi, S. Heinemeyer, W. Hollik, P. Slavich, G. Weiglein, Eur. Phys. J. C 28, 133 (2003)

    Article  ADS  MathSciNet  Google Scholar 

  8. A.D. Sakharov, JETP Lett. 5, 24 (1967); A. Pilaftsis, Phys. Rev. D 58, 096010 (1998); Phys. Lett. B 435, 88 (1998)

    ADS  Google Scholar 

  9. D. Demir, Phys. Rev. D 60, 055006 (1999); A. Pilaftsis, C. Wagner, Nucl. Phys. B 553, 3 (1999); S. Choi, M. Drees, J. Lee, Phys. Lett. B 481, 57 (2000); M. Carena, J. Ellis, A. Pilaftsis, C. Wagner, Nucl. Phys. B 586, 92 (2000); M. Carena et al., Nucl. Phys. B 599, 158 (2001); S. Heinemeyer, Eur. Phys. J. C 22, 521 (2001); T. Ibrahim, P. Nath, Phys. Rev. D 63, 035009 (2001); Phys. Rev. D 66, 015005 (2002); M. Frank, S. Heinemeyer, W. Hollik, G. Weiglein, hep-ph/0212037, Proceedings, SUSY02, DESY, Hamburg (Germany), July 2002, Vol. 2, p. 637

    Article  ADS  Google Scholar 

  10. OPAL Collaboration, G. Abbiendi et al., Eur. Phys. J. C 37, 49 (2004)

    Article  ADS  Google Scholar 

  11. ALEPH Collaboration, Phys. Lett. B 526, 191 (2002)

    Article  ADS  Google Scholar 

  12. DELPHI Collaboration, J. Abdallah et al., Eur. Phys. J. C 32, 145 (2004); DELPHI 2005-020-CONF-740, paper in preparation

    Article  ADS  Google Scholar 

  13. L3 Collaboration, P. Achard et al., Phys. Lett. B 545, 30 (2002)

    Article  ADS  Google Scholar 

  14. D.E. Groom et al., Eur. Phys. J. C 15, 1 (2000)

    Google Scholar 

  15. The CDF and D0 Collaborations, and the Tevatron Electroweak Working Group, hep-ex/0507091 (July 2005)

  16. M. Carena, S. Heinemeyer, C.E.M. Wagner, G. Weiglein, hep-ph/9912223; Eur. Phys. J. C 26, 601 (2003)

    Article  ADS  Google Scholar 

  17. S. Heinemeyer, W. Hollik, G. Weiglein, Comput. Phys. Commun. 124, 76 (2000); S. Heinemeyer, hep-ph/0407244; M. Frank, T. Hahn, S. Heinemeyer, W. Hollik, H. Rzehak, G. Weiglein, in preparation. The code is accessible via http://www.feynhiggs.de

    Article  MATH  ADS  Google Scholar 

  18. M. Carena, J.R. Ellis, A. Pilaftsis, C.E. Wagner, Phys. Lett. B 495, 155 (2000); Nucl. Phys. B 586, 92 (2000)

    Article  ADS  Google Scholar 

  19. M. Carena, M. Quirós, C.E.M. Wagner, Nucl. Phys. B 461, 407 (1996); M. Carena, S. Mrenna, C. Wagner, Phys. Rev. D 60, 075010 (1999); M. Carena, H.E. Haber, S. Heinemeyer, W. Hollik, C.E.M. Wagner, G. Weiglein, Nucl. Phys. B 580, 29 (2000); J.R. Espinosa, R.-J. Zhang, JHEP 0003, 026 (2000)

    Article  ADS  Google Scholar 

  20. J.S. Lee, A. Pilaftsis, M. Carena, S.Y. Choi, M. Drees, J.R. Ellis, C.E.M. Wagner, Comput. Phys. Commun. 156, 283 (2004)

    Article  ADS  Google Scholar 

  21. P. Janot, Physics at LEP2, ed. by G. Altarelli, T. Sjöstrand, F. Zwirner, CERN 96-01 Vol. 2, p. 309.

  22. S. Heinemeyer, W. Hollik, Nucl. Phys. B 474, 32 (1996)

    Article  ADS  Google Scholar 

  23. G.W. Bennett et al., Phys. Rev. Lett. 92, 161802 (2004); M. Davier, W. Marciano, Ann. Rev. Nucl. Part. Sci. 54, 115 (2004)

    Article  ADS  Google Scholar 

  24. T. Moroi, Phys. Rev. D 53, 6565 (1996); [Erratum: Phys. Rev. D 56, 4424 (1997)]

    Article  ADS  Google Scholar 

  25. ALEPH Collaboration, R. Barate et al., , Phys. Lett. B 429, 169 (1998); CLEO Collaboration, T.E. Coan et al., Phys. Rev. Lett. 84, 5283 (2000); CLEO Collaboration, S. Chen et al., Phys. Rev. Lett. 87, 251807 (2001); BELLE Collaboration, K. Abe et al., Phys. Lett. B 511, 151 (2001); BABAR Collaboration, B. Aubert et al., Phys. Rev. Lett. 88, 101815 (2002); BABAR Collaboration, B. Aubert et al., hep-ex/0407003, submitted to Phys. Rev. Lett. (2004); BELLE Collaboration, M. Nakao et al., Phys. Rev. D 69, 112001 (2004); A.L. Kagan, M. Neubert, Phys. Rev. D 58, 094012 (1998); Phys. Lett. B 539, 227 (2002)

    Article  ADS  Google Scholar 

  26. E.D. Commins, S.B. Ross, D. DeMille, B.C. Regan, Phys. Rev. A 50, 2960 (1994); P.G. Harris et al., Phys. Rev. Lett. 82, 904 (1999)

    Article  ADS  Google Scholar 

  27. ALEPH, DELPHI, L3, OPAL and SLD Collaborations, LEP Electroweak Working Group, SLD Electroweak and Heavy Flavour Groups, CERN-PH-EP/2005-041, Phys. Rep. 427, 257–454 (2006) [hep-ex/0509008]

    ADS  Google Scholar 

  28. OPAL Collaboration, G. Abbiendi et al., Eur. Phys. J. C 27, 311 (2003)

    Article  ADS  Google Scholar 

  29. OPAL Collaboration, G. Abbiendi et al., Eur. Phys. J. C 23, 397 (2002)

    Article  ADS  Google Scholar 

  30. T. Junk, Nucl. Instrum. Methods Phys. Res. A 434, 435 (1999); A. Read, In: 1st Workshop on Confidence Limits, CERN-2000-005; P. Bock, hep-ex/0405072 (2004)

    Article  ADS  Google Scholar 

  31. K. Hagiwara et al., Phys. Rev. D 66, 010001-1 (2002), Review No. 31 on Statistics, p. 229

    Article  Google Scholar 

  32. ALEPH Collaboration, Eur. Phys. J. C 17, 223 (2000)

    ADS  Google Scholar 

  33. ALEPH Collaboration, Phys. Lett. B 499, 53 (2001)

    Article  ADS  Google Scholar 

  34. ALEPH Collaboration, Phys. Lett. B 495, 1 (2000)

    Article  ADS  Google Scholar 

  35. ALEPH Collaboration, Phys. Lett. B 544, 25 (2002)

    Article  ADS  Google Scholar 

  36. DELPHI Collaboration, P. Abreu et al., Z. Phys. C 51, 25 (1991)

    Article  Google Scholar 

  37. DELPHI Collaboration, P. Abreu et al., Nucl. Phys. B 342, 1 (1990)

    Article  Google Scholar 

  38. DELPHI Collaboration, P. Abreu et al., Nucl. Phys. B 373, 3 (1992)

    Article  Google Scholar 

  39. DELPHI Collaboration, P. Abreu et al., Nucl. Phys. B 421, 3 (1994)

    Article  ADS  Google Scholar 

  40. DELPHI Collaboration, P. Abreu et al., Eur. Phys. J. C 2, 1 (1998)

    Article  ADS  Google Scholar 

  41. DELPHI Collaboration, P. Abreu et al., Eur. Phys. J. C 10, 563 (1999)

    Article  ADS  Google Scholar 

  42. DELPHI Collaboration, P. Abreu et al., Eur. Phys. J. C 17, 187 (2000); [Addendum: Eur. Phys. J. C 17, 529 (2000)]

    ADS  Google Scholar 

  43. DELPHI Collaboration, J. Abdallah et al., Eur. Phys. J. C 32, 145 (2004)

    Article  ADS  Google Scholar 

  44. DELPHI Collaboration, J. Abdallah et al., Eur. Phys. J. C 23, 409 (2002)

    Article  ADS  Google Scholar 

  45. DELPHI Collaboration, J. Abdallah et al., Eur. Phys. J. C 44, 147 (2005)

    Article  ADS  Google Scholar 

  46. DELPHI 92-80 Dallas PHYS 191, Neutral Higgs Bosons in a Two Doublet Model, contribution to the 1992 ICHEP conference; quoted by G. Wormser, In: Proc. of the XXVI ICHEP conference (Dallas, August 1992), Vol. 2, pages 1309–14, ref. 4

  47. DELPHI 2003-045-CONF-665, DELPHI results on neutral Higgs bosons in MSSM benchmark scenarios, contribution to the 2003 summer conferences

  48. S. Dagoret, PhD Thesis, Université de Paris-Sud, Centre d’Orsay, LAL-preprint 91-12 (May 1991)

  49. DELPHI Collaboration, P. Abreu et al., Phys. Lett B 245, 276 (1990)

    Article  Google Scholar 

  50. DELPHI Collaboration, J. Abdallah et al., Eur. Phys. J. C 38, 1 (2004)

    Article  ADS  Google Scholar 

  51. DELPHI Collaboration, P. Abreu et al., Z. Phys. C 67, 69 (1995)

    Article  Google Scholar 

  52. L3 Collaboration, M. Acciarri et al., Phys. Lett. B 461, 376 (1999)

    Article  Google Scholar 

  53. L3 Collaboration, M. Acciarri et al., Phys. Lett. B 508, 225 (2001)

    Article  ADS  Google Scholar 

  54. L3 Collaboration, P. Achard et al., Phys. Lett. B 517, 319 (2001)

    Article  ADS  Google Scholar 

  55. L3 Collaboration, P. Achard et al., Phys. Lett. B 583, 14 (2004)

    Article  Google Scholar 

  56. L3 Collaboration, P. Achard et al., Phys. Lett. B 545, 30 (2002)

    Article  ADS  Google Scholar 

  57. L3 Collaboration, M. Acciarri et al., Phys. Lett. B 471, 321 (1999)

    Article  Google Scholar 

  58. L3 Collaboration, M. Acciarri et al., Phys. Lett. B 503, 21 (2001)

    Article  ADS  Google Scholar 

  59. OPAL Collaboration, K. Ackerstaff et al., Eur. Phys. J. C 1, 425 (1998)

    Article  ADS  Google Scholar 

  60. OPAL Collaboration, K. Ackerstaff et al., Eur. Phys. J. C 5, 19 (1998)

    Article  ADS  Google Scholar 

  61. OPAL Collaboration, G. Abbiendi et al., Eur. Phys. J. C 7, 407 (1999)

    Article  ADS  Google Scholar 

  62. OPAL Collaboration, G. Abbiendi et al., Eur. Phys. J. C 12, 567 (2000)

    Article  ADS  Google Scholar 

  63. OPAL Collaboration, G. Abbiendi et al., Eur. Phys. J. C 26, 479 (2003)

    Article  ADS  Google Scholar 

  64. OPAL Collaboration, G. Alexander et al., Z. Phys. C 73, 189 (1997)

    Article  Google Scholar 

  65. OPAL Collaboration, R. Akers et al., Z. Phys. C 64, 1 (1994)

    Article  Google Scholar 

  66. OPAL Collaboration, G. Abbiendi et al., Eur. Phys. J. C 18, 425 (2001)

    ADS  Google Scholar 

  67. OPAL Collaboration, G. Abbiendi et al., Phys. Lett. B 594, 11 (2004)

    ADS  Google Scholar 

  68. OPAL Collaboration, G. Abbiendi et al., Eur. Phys. J. C 27, 483 (2003)

    Article  ADS  Google Scholar 

  69. OPAL Collaboration, G. Abbiendi et al., Eur. Phys. J. C 40, 317 (2005)

    Article  ADS  Google Scholar 

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Schael, S., Barate, R., Brunelière, R. et al. Search for neutral MSSM Higgs bosons at LEP. Eur. Phys. J. C 47, 547–587 (2006). https://doi.org/10.1140/epjc/s2006-02569-7

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  • DOI: https://doi.org/10.1140/epjc/s2006-02569-7

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