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\(\mathcal{O}(\alpha_{s})\) corrections to the B-hadron energy distribution of the top decay in the general two Higgs doublet model considering GM-VFN scheme

  • S. Mohammad Moosavi NejadEmail author
Regular Article - Theoretical Physics

Abstract

We present our analytic results for the NLO corrections to the partial decay width tH + b followed by bBX for nonzero b-quark mass (m b ≠0) in the Fixed-Flavor-Number scheme (FFNs) taking the H + boson to be stable. To make our predictions for the energy distribution of the outgoing bottom-flavored hadron (B-hadron) as a function of the normalized B-energy fraction x B , we apply the General-Mass Variable-Flavor-Number scheme (GM-VFNs) in the general two Higgs doublet model (2HDM). In order to describe both the b-quark and the gluon hadronizations in top decay we use fragmentation functions extracted from data from e + e machines. We find that the most reliable prediction for the B-hadron energy spectrum is made in the GM-VFN scheme, especially when the second model in the general 2HDM is considered.

Keywords

Higgs Boson Large Hadron Collider Higgs Doublet Bottom Quark Subtraction Term 
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.

Notes

Acknowledgements

I would like to thank Professor Bernd Kniehl for reading the manuscript and also for his important comments. I would also like to thank Dr Mathias Butenschon for reading and improving the manuscript. This work was supported by Yazd university and the Institute for Research in Fundamental Science (IPM).

References

  1. 1.
    Tevatron EW Working Group and CDF & D0 Collaboration, arXiv:0903.2503 [hep-ex]
  2. 2.
    U. Langenfeld, S. Moch, P. Uwer, arXiv:0907.2527 [hep-ph]
  3. 3.
    N. Cabibbo, Phys. Rev. Lett. 10, 531 (1963) ADSCrossRefGoogle Scholar
  4. 4.
    M. Kobayashi, T. Maskawa, Prog. Theor. Phys. 49, 652 (1973) ADSCrossRefGoogle Scholar
  5. 5.
    B.A. Kniehl, G. Kramer, S.M.M. Nejad, Nucl. Phys. B 862, 720 (2012). arXiv:1205.2528 [hep-ph] ADSzbMATHCrossRefGoogle Scholar
  6. 6.
    A. Djouadi, Phys. Rep. 459, 1 (2008). hep-ph/0503173 ADSCrossRefGoogle Scholar
  7. 7.
    J.F. Gunion, H.E. Haber, Nucl. Phys. B 272, 1 (1986) ADSCrossRefGoogle Scholar
  8. 8.
    J.F. Gunion, H.E. Haber, Nucl. Phys. B 402, 567 (1993) CrossRefGoogle Scholar
  9. 9.
    S.M. Moosavi Nejad, Phys. Rev. D 85, 054010 (2012) ADSCrossRefGoogle Scholar
  10. 10.
    A. Ali, F. Barreiro, J. Llorente, Eur. Phys. J. C 71, 1737 (2011) ADSCrossRefGoogle Scholar
  11. 11.
    ATLAS Collaboration, Search for charged Higgs bosons in the τ+jets final state in \(t\bar{t}\) decays with 1.03 fb−1 of pp collision data recorded at \(\sqrt{s}=7\ \mathrm{TeV}\) with the ATLAS experiment. ATLAS-CONF-2011-138 (2011) Google Scholar
  12. 12.
    V.N. Gribov, L.N. Lipatov, Sov. J. Nucl. Phys. 15, 438 (1972). [Yad. Fiz. 15, 781 (1972)] Google Scholar
  13. 13.
    G. Altarelli, G. Parisi, Nucl. Phys. B 126, 298 (1977) ADSCrossRefGoogle Scholar
  14. 14.
    Yu.L. Dokshitzer, Sov. Phys. JETP 46, 641 (1977). [Zh. Eksp. Teor. Fiz. 73, 1216 (1977)] ADSGoogle Scholar
  15. 15.
    G. Corcella, A.D. Mitov, Nucl. Phys. B 623, 247 (2002) ADSCrossRefGoogle Scholar
  16. 16.
    G. Corcella, F. Mescia, Eur. Phys. J. C 65, 171 (2009) ADSCrossRefGoogle Scholar
  17. 17.
    G. Corcella, F. Mescia, Eur. Phys. J. C 68, 687(E) (2010) ADSCrossRefGoogle Scholar
  18. 18.
    S. Biswas, K. Melnikov, M. Schulze, J. High Energy Phys. 08, 048 (2010) ADSGoogle Scholar
  19. 19.
    J.F. Gunion, H. Haber, G. Kane, S. Dawson, The Higgs Hunter’s Guide (Addison-Wesley, Reading, 1990), and references therein Google Scholar
  20. 20.
    A. Kadeer, J.G. Körner, M.C. Mauser, Eur. Phys. J. C 54, 175 (2008) ADSCrossRefGoogle Scholar
  21. 21.
    A. Czarnecki, S. Davidson, Phys. Rev. D 47, 3063 (1993) ADSCrossRefGoogle Scholar
  22. 22.
    J. Liu, Y.P. Yao, Phys. Rev. D 46, 5196 (1992) ADSCrossRefGoogle Scholar
  23. 23.
    S. Dittmaier, Nucl. Phys. B 675, 447 (2003) ADSzbMATHCrossRefMathSciNetGoogle Scholar
  24. 24.
    J.C. Collins, Phys. Rev. D 58, 094002 (1998) ADSCrossRefGoogle Scholar
  25. 25.
    B.A. Kniehl, G. Kramer, I. Schienbein, H. Spiesberger, Phys. Rev. D 71, 014018 (2005) ADSCrossRefGoogle Scholar
  26. 26.
    B.A. Kniehl, G. Kramer, I. Schienbein, H. Spiesberger, Phys. Rev. Lett. 96, 012001 (2006) ADSCrossRefGoogle Scholar
  27. 27.
    B. Mele, P. Nason, Nucl. Phys. B 361, 626 (1991) ADSCrossRefGoogle Scholar
  28. 28.
    J.P. Ma, Nucl. Phys. B 506, 329 (1997) ADSCrossRefGoogle Scholar
  29. 29.
    S. Keller, E. Laenen, Phys. Rev. D 59, 114004 (1999) ADSCrossRefGoogle Scholar
  30. 30.
    M. Cacciari, S. Catani, Nucl. Phys. B 617, 253 (2001) ADSCrossRefGoogle Scholar
  31. 31.
    K. Melnikov, A. Mitov, Phys. Rev. D 70, 034027 (2004) ADSCrossRefGoogle Scholar
  32. 32.
    A. Mitov, Phys. Rev. D 71, 054021 (2005) ADSCrossRefGoogle Scholar
  33. 33.
    A. Ali, E.A. Kuraev, Y.M. Bystritskiy, Eur. Phys. J. C 67, 377 (2010) ADSCrossRefGoogle Scholar
  34. 34.
    B. Abbott et al. (D0 Collaborations), Phys. Rev. Lett. 82, 4975 (1999) ADSCrossRefGoogle Scholar
  35. 35.
    A. Abulencia et al. (CDF Collaboration), Phys. Rev. Lett. 96, 042003 (2006) ADSCrossRefGoogle Scholar
  36. 36.
    G. Aad et al. (ATLAS Collaboration), J. Instrum. 3, S08003 (2008) CrossRefGoogle Scholar
  37. 37.
    K. Nakamura et al. (Particle Data Group), J. Phys. G 37, 075021 (2010) ADSCrossRefGoogle Scholar
  38. 38.
    A. Heister et al. (ALEPH Collaboration), Phys. Lett. B 512, 30 (2001) ADSCrossRefGoogle Scholar
  39. 39.
    G. Abbiendi et al. (OPAL Collaboration), Eur. Phys. J. C 29, 463 (2003) ADSCrossRefGoogle Scholar
  40. 40.
    K. Abe et al. (SLD Collaboration), Phys. Rev. Lett. 84, 4300 (2000) ADSCrossRefGoogle Scholar
  41. 41.
    K. Abe et al. (SLD Collaboration), Phys. Rev. D 65, 092006 (2002) ADSCrossRefGoogle Scholar
  42. 42.
    K. Abe et al. (SLD Collaboration), Phys. Rev. D 66, 079905 (2002) ADSCrossRefGoogle Scholar
  43. 43.
    B.A. Kniehl, G. Kramer, I. Schienbein, H. Spiesberger, Phys. Rev. D 77, 014011 (2008) ADSCrossRefGoogle Scholar
  44. 44.
    B. Abbott et al. (D0 Collaboration), Phys. Rev. D 58, 052001 (1998) ADSCrossRefGoogle Scholar
  45. 45.
    T. Affolder et al. (CDF Collaboration), Phys. Rev. D 63, 032003 (2001) ADSCrossRefGoogle Scholar
  46. 46.
    S. Schael et al. (ALEPH and DELPHI and L3 and OPAL and LEP Working Group for Higgs Boson Searches Collaborations), Eur. Phys. J. C 47, 547 (2006) ADSCrossRefGoogle Scholar

Copyright information

© Springer-Verlag Berlin Heidelberg and Società Italiana di Fisica 2012

Authors and Affiliations

  1. 1.Faculty of PhysicsYazd UniversityYazdIran
  2. 2.School of Particles and AcceleratorsInstitute for Research in Fundamental Sciences (IPM)TehranIran

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