Advertisement

Zeitschrift für Physik C Particles and Fields

, Volume 71, Issue 4, pp 679–688 | Cite as

Phenomenological implications of light stop and higgsinos

  • Andrea Brignole
  • Ferruccio Feruglio
  • Fabio Zwirner
Article
  • 55 Downloads

Abstract

We examine the phenomenological implications of light\(\tilde t_R \) and higgsinos in the Minimal Supersymetric Standard Model, assuming tan2 β<m t m b and heavy\(\tilde t_L \) and gauginos. In this simplified setting, we study the contributions to Δm B d,ε K,BR(b),R b≡Γ(Zbb) /Γ(Z→hadrons),BR(tbW), and their interplay.

Keywords

Higgs Boson Minimal Supersymmetric Standard Model Standard Model Prediction Light Stop Charged Higgs Boson 
These keywords were added by machine and not by the authors. This process is experimental and the keywords may be updated as the learning algorithm improves.

Preview

Unable to display preview. Download preview PDF.

Unable to display preview. Download preview PDF.

References

  1. 1.
    S. Ferrara, ed., Supersymmetry (North-Holland, Amsterdam, 1987)Google Scholar
  2. 2.
    G. Altarelli, R. Barbieri, F. Caravaglios: Phys. Lett. B314 (1993) 357 and Nucl. Phys. B405 (1993) 3; J. Ellis, G.L. Fogli, E. Lisi: Nucl. Phys. B393 (1993) 3 and Phys. Lett. B324 (1994) 173; J.D. Wells, C. Kolda, G.L. Kane: Phys. Lett. B338 (1994) 219; D. Garcia, R.A. Jiménez, J. Solà: Phys. Lett. B347 (1995) 321 + (E) B351 (1995) 602; D. Garcia, J. Solà: Phys. Lett. B354 (1995) 335 and B357 (1995) 349; P.H. Chankowski, S. Pokorski: preprint hep-ph/9505304 and Phys. Lett. B356 (1995) 307; G.L. Kane, R.G. Stuart, J.D. Wells: Phys. Lett. B354 (1995) 350; M. Carena, C.E.M. Wagner: Nucl. Phys. B452 (1995) 45; J.D. Wells, G.L. Kane: preprint hep-ph/9510372; X. Wang, J.L. Lopez, D.V. Nanopoulos: Phys. Rev. D52 (1995) 4116; J. Ellis, J.L. Lopez, D.V. Nanopoulos: preprint hep-ph/9512288ADSCrossRefGoogle Scholar
  3. 3.
    J.F. Gunion, H.E. Haber: Phys. Rev. D37 (1988) 2515ADSGoogle Scholar
  4. 4.
    D. Pierce, A. Papadopoulos: Phys. Rev. D50 (1994) 565 and Nucl. Phys. B430 (1994) 278; A.B. Lahanas, K. Tamvakis, N.D. Tracas: Phys. Lett. B324 (1994) 387; G.F. Giudice, A. Pomarol, preprint hep-ph/9512337ADSGoogle Scholar
  5. 5.
    A. Donini, preprint hep-ph/9511289Google Scholar
  6. 6.
    F. Abe et al. (CDF Collaboration): Phys. Rev. Lett. 73 (1994) 225, Phys. Rev. D50 (1994) 2966, Phys. Rev. Lett. 74 (1995) 2626, Phys. Rev. D52 (1995) 2605 and Phys. Rev. Lett. 75 (1995) 3997; S. Abachi et al. (D0 Collaboration): Phys. Rev. Lett. 74 (1995) 2632 and Phys. Rev. D52 (1995) 4877ADSCrossRefGoogle Scholar
  7. 7.
    For a review and references, see for instance A. Buras, preprint hep-ph/9509329Google Scholar
  8. 8.
    L.F. Abbott, P. Sikivie, M.B. Wise: Phys. Rev. D21 (1980) 1393ADSGoogle Scholar
  9. 9.
    S. Bertolini, F. Borzumati, A. Masiero, G. Ridolfi: Nucl. Phys. B353 (1991) 591ADSCrossRefGoogle Scholar
  10. 10.
    G.C. Branco, G.C. Cho, Y. Kizukuri, N. Oshimo: Nucl. Phys. B449 (1995) 483 and Phys. Lett. B337 (1994) 316ADSCrossRefGoogle Scholar
  11. 11.
    G.C. Cho, Y. Kizukuri, N. Oshimo: preprint hep-ph/9509277Google Scholar
  12. 12.
    G. Couture, H. König: preprint hep-ph/9505315; T. Goto, T. Nihei, Y. Okada: preprint hep-ph/9510286Google Scholar
  13. 13.
    L. Rolandi (ALEPH), H. Dijkstra (DELPHI), D. Strickland (L3) G. Wilson (OPAL): Joint Seminar on the First Results from LEP 1.5, CERN, 12 December 1995Google Scholar
  14. 14.
    M. Neubert: talk at the 17th International Symposium on Lepton-Photon Interactions, Bejing, China, 10–15 August 1995, preprint hep-ph/9511409, to appear in the Proceedings, and references thereinGoogle Scholar
  15. 15.
    S.-L. Wu: talk at the 17th International Symposium on Lepton-Photon Interactions, Bejing, China, 10–15 August 1995, to appear in the Proceedings, and references thereinGoogle Scholar
  16. 16.
    S. Narison: Phys. Lett. B322 (1994) 247; S. Narison A. Pivovarov: Phys. Lett. B327 (1994) 341; J. Shigemitsu, in Proceedings of the XXVII International Conference on High Energy Physics, 20–27 July 1994, Glasgow, Scotland, UK (P.J. Bussey I.J. Knowles, eds.), Vol. I, p. 135ADSCrossRefGoogle Scholar
  17. 17.
    E. Gabrielli, G.F. Giudice: Nucl. Phys. B433 (1995) 3ADSCrossRefGoogle Scholar
  18. 18.
    G.D. Barr et al. (NA31 Collaboration): Phys. Lett. B317 (1993) 233ADSCrossRefGoogle Scholar
  19. 19.
    L.K. Gibbons et al. (E731 Collaboration): Phys. Rev. Lett. 70 (1993) 1203ADSCrossRefGoogle Scholar
  20. 20.
    M.S. Alam et al. (CLEO Collaboration): Phys. Rev. Lett. 71 (1993) 674 and 74 (1995) 2885ADSCrossRefGoogle Scholar
  21. 21.
    G. Ricciardi: preprint hep-ph/9510447Google Scholar
  22. 22.
    A. Ali, C. Greub: Phys. Lett. B361 (1995) 146ADSCrossRefGoogle Scholar
  23. 23.
    A.J. Buras, M. Misiak, M. Münz S. Pokorski: Nucl. Phys. B424 (1994) 374; M. Ciuchini, E. Franco, G. Martinelli, L. Reina L. Silvestrini: Phys. Lett. B334 (1994) 137ADSCrossRefGoogle Scholar
  24. 24.
    R. Barbieri, G.F. Giudice: Phys. Lett. B309 (1993) 86; Y. Okada: Phys. Lett. B315 (1993) 119; R. Garisto, J.N. Ng: Phys. Lett. B315 (1993) 372ADSCrossRefGoogle Scholar
  25. 25.
    M. Boulware, D. Finnell: Phys. Rev. D44 (1991) 2054; A. Djouadi, G. Girardi, C. Verzegnassi, W. Hollik, F. Renard: Nucl. Phys. B349 (1991) 48ADSGoogle Scholar
  26. 26.
    P. Antilogus et al. (The LEP Electroweak Working Group): preprint LEPEWWG/95-02, and references thereinGoogle Scholar
  27. 27.
    G. Ridolfi: in Proceedings of the LHC Workshop, Aachen, 4–9 October 1990 (G. Jarlskog and D. Rein eds.), report CERN 90-10, Vol. II, section 3.4.3, pp. 634–635Google Scholar
  28. 28.
    E. Ma, D. Ng: Preprint hep-ph/9508338; S. Mrenna, C.P. Yuan, preprint hep-ph/9509424Google Scholar
  29. 29.
    A. Brignole, J. Ellis, G. Ridolfi, F. Zwirner: Phys. Lett. B271 (1991) 123; A. Brignole, Phys. Lett. B277 (1992) 313ADSCrossRefGoogle Scholar
  30. 30.
    Y. Okada, M. Yamaguchi, T. Yanagida: Prog. Theor. Phys. Lett. 85 (1991) 1; J. Ellis, G. Ridolfi, F. Zwirner: Phys. Lett. B257 (1991) 83 and B262 (1991) 477; H.E. Haber, R. Hempfling: Phys. Rev. Lett. 66 (1991) 1815; R. Barbieri, M. Frigeni, M. Caravaglios, Phys. Lett. B258 (1991) 167. For the latest refinements, see e.g.: M. Carena, P.M. Zerwas and the Higgs Physics Working Group, contribution to the Workshop on the Physics at LEP200, to appear in Vol. I of the Proceedings (G. Altarelli, T. Sjöstrand, F. Zwirner, eds.), and references thereinADSCrossRefGoogle Scholar
  31. 31.
    S. Abachi et al. (D0 Collaboration): contribution to the HEP95 Conference, Brussels, Belgium, 27 July–2 August 1995 and preprint hep-ex/9512004. See also: K. Einsweiler, talk given at the Final Meeting of the CERN LEP200 Workshop, CERN, 3 November 1995Google Scholar
  32. 32.
    G.F. Giudice, M.L. Mangano, G. Ridolfi, R. Rückl and the Searches for new physics Working Group, contribution to the Workshop on the Physics at LEP200, to appear in Vol. I of the Proceedings (G. Altarelli, T. Sjöstrand, F. Zwirner: eds.), and references therein. See also, for the limiting case considered in this paper: S. Ambrosanio, B. Mele, M. Carena, C.E.M. Wagner, preprint hep-ph/9511259Google Scholar

Copyright information

© Springer-Verlag 1996

Authors and Affiliations

  • Andrea Brignole
    • 1
  • Ferruccio Feruglio
    • 2
  • Fabio Zwirner
    • 1
  1. 1.Theory DivisionCERNGeneva 23Switzerland
  2. 2.Dipartimento di FisicaUniversità di PadovaPaduaItaly

Personalised recommendations