Closing in on a perturbative fourth generation

Journal of High Energy Physics

Volumn 2012, Issue 6, 2012, Pages

  Buchkremer, Mathieu ^a   Gérard, Jean Marc ^a   Maltoni, Fabio ^a  

^a UNIVERSITÉ CATHOLIQUE DE LOUVAIN   (Belgium)

Author keywords

Beyond standard model; Higgs physics

Indexed keywords

EID: 84864268578     PISSN: 11266708     EISSN: 10298479     Source Type: Journal    
DOI: 10.1007/JHEP06(2012)135     Document Type: Article

References (54)

1. B. Holdom et al., Four statements about the fourth generation, PMC Phys. A 3 (2009) 4 [arXiv:0904.4698] [INSPIRE].
2. tb ≃ 1?, Eur. Phys. J. C 49 (2007) 791 [hep-ph/0607115] [INSPIRE].
3. E. Aşilar et al., Oblique parameters and extra generations via OPUCEM, Eur. Phys. J. C 72 (2012) 1966 [arXiv:1112.0507] [INSPIRE].
4. G.D. Kribs, T. Plehn, M. Spannowsky and T.M. Tait, Four generations and Higgs physics, Phys. Rev. D 76 (2007) 075016 [arXiv:0706.3718] [INSPIRE].
5. M. Baak et al., Updated status of the global electroweak fit and constraints on new physics, Eur. Phys. J. C 72 (2012) 2003 [arXiv:1107.0975] [INSPIRE].
6. CDF collaboration, T. Aaltonen et al., Search for heavy bottom-like quarks decaying to an electron or muon and jets in pp̄ collisions at √s = 1:96TeV, Phys. Rev. Lett. 106 (2011) 141803 [arXiv:1101.5728] [INSPIRE].
7. -1, CDF public conference note CDF-PUB-TOP-PUBLIC-10110, Fermilab, Batavia U.S.A. (2010).
8. CMS collaboration, Search for a heavy bottom-like quark in pp collisions at √s = 7TeV, CMS-PAS-EXO-11-036, CERN, Geneva Switzerland (2011)
9. [JHEP 05 (2012) 123] [arXiv:1204.1088] [INSPIRE].
10. CMS collaboration, Search for a heavy top-like quark in the dilepton final state in pp collisions at 7TeV, CMS-PAS-EXO-11-050, CERN, Geneva Switzerland (2011) [arXiv:1203.5410] [INSPIRE].
11. CMS collaboration, Inclusive search for a fourth generation of quarks with the CMS experiment, CMS-PAS-EXO-11-054, CERN, Geneva Switzerland (2011).
12. ATLAS collaboration, G. Aad et al., Search for pair-produced heavy quarks decaying to Wq in the two-lepton channel at √s = 7TeV with the ATLAS detector, CERN-PH-EP-2012-009, CERN, Geneva Switzerland (2012)
13. [Phys. Rev. D 85 (2012) 092014] [arXiv:1203.3161] [INSPIRE].
14. J. Erler and P. Langacker, Precision constraints on extra fermion generations, Phys. Rev. Lett. 105 (2010) 031801 [arXiv:1003.3211] [INSPIRE].
15. A. Wingerter, Implications of the stability and triviality bounds on the Standard Model with three and four chiral generations, Phys. Rev. D 84 (2011) 095012 [arXiv:1109.5140] [INSPIRE].
16. H. Murayama, V. Rentala, J. Shu and T.T. Yanagida, Saving fourth generation and baryon number by living long, Phys. Lett. B 705 (2011) 208 [arXiv:1012.0338] [INSPIRE].
17. G. Burdman and L. Da Rold, Electroweak symmetry breaking from a holographic fourth generation, JHEP 12 (2007) 086 [arXiv:0710.0623] [INSPIRE].
18. K. Ishiwata and M.B. Wise, Fourth generation bound states, Phys. Rev. D 83 (2011) 074015 [arXiv:1103.0611] [INSPIRE].
19. T. Enkhbat, W.-S. Hou and H. Yokoya, Early LHC phenomenology of Yukawa-bound heavy QQ̄ mesons, Phys. Rev. D 84 (2011) 094013 [arXiv:1109.3382] [INSPIRE].
20. - annihilation at LEP, Phys. Lett. B 517 (2001) 75 [hep-ex/0107015] [INSPIRE].
21. Particle Data Group collaboration, K. Nakamura et al., Review of particle physics, J. Phys. G 37 (2010) 075021 [INSPIRE].
22. H. Lacker and A. Menzel, Simultaneous extraction of the Fermi constant and PMNS matrix elements in the presence of a fourth generation, JHEP 07 (2010) 006 [arXiv:1003.4532] [INSPIRE].
23. O. Cobanoglu, E. Ozcan, S. Sultansoy and G. Unel, OPUCEM: a library with error checking mechanism for computing oblique parameters, Comput. Phys. Commun. 182 (2011) 1732 [arXiv:1005.2784] [INSPIRE].
24. CMS collaboration, Combined results of searches for the standard model Higgs boson in pp collisions at √s = 7TeV, CMS-HIG-11-032, CERN, Geneva Switzerland (2012)
25. [Phys. Lett. B 710 (2012) 26] [arXiv:1202.1488] [INSPIRE].
26. CMS collaboration, Search for the standard model Higgs boson decaying into two photons in pp collisions at √s = 7TeV, CMS-HIG-11-033, CERN, Geneva Switzerland (2012)
27. [Phys. Lett. B 710 (2012) 403] [arXiv:1202.1487] [INSPIRE].
28. -1 of pp collision data at √s = 7TeV, ATLAS-CONF-2012-019, CERN, Geneva Switzerland (2012).
29. -1 of ATLAS data at √s = 7TeV, ATLAS-CONF-2011-161, CERN, Geneva Switzerland (2011).
30. CMS collaboration, Search for Standard Model Higgs boson in pp collisions at √s = 7TeV, CMS-PAS-HIG-11-011, CERN, Geneva Switzerland (2011) [INSPIRE].
31. CMS collaboration, Combination of SM, SM4, FP Higgs boson searches, CMS-PAS-HIG-12-008, CERN, Geneva Switzerland (2012).
32. ATLAS collaboration, Update of the combination of Higgs boson searches in pp collisions at √s = 7TeV with the ATLAS experiment at the LHC, ATLAS-CONF-2011-135, CERN, Geneva Switzerland (2011).
33. S. Cetin, T. Cuhadar-Donszelmann, M. Sahin, S. Sultansoy and G. Unel, Impact of the relatively light fourth family neutrino on the Higgs boson search, Phys. Lett. B 710 (2012) 328 [arXiv:1108.4071] [INSPIRE].
34. L.M. Carpenter, Higgs search constraints on fourth generation scenarios with general lepton sectors, arXiv:1110.4895 [INSPIRE].
35. G. Guo, B. Ren and X.-G. He, LHC evidence of a 126 GeV Higgs boson from H → γγ with three and four generations, arXiv:1112.3188 [INSPIRE].
36. A. Denner et al., Higgs production and decay with a fourth Standard-Model-like fermion generation, Eur. Phys. J. C 72 (2012) 1992 [arXiv:1111.6395] [INSPIRE].
37. A. Djouadi and A. Lenz, Sealing the fate of a fourth generation of fermions, arXiv:1204.1252 [INSPIRE].
38. E. Kuik, Y. Nir and T. Volansky, Implications of Higgs searches on the four generation Standard Model, arXiv:1204.1975 [INSPIRE].
39. O. Eberhardt et al., Joint analysis of Higgs decays and electroweak precision observables in the Standard Model with a sequential fourth generation, arXiv:1204.3872 [INSPIRE].
40. C. Anastasiou, S. Buehler, F. Herzog and A. Lazopoulos, Inclusive Higgs boson cross-section for the LHC at 8TeV, JHEP 04 (2012) 004 [arXiv:1202.3638] [INSPIRE].
41. P. Gonzalez, J. Rohrwild and M. Wiebusch, Electroweak precision observables within a fourth generation model with general avour structure, Eur. Phys. J. C 72 (2012) 2007 [arXiv:1105.3434] [INSPIRE].
42. T. Yanir, Phenomenological constraints on extended quark sectors, JHEP 06 (2002) 044 [hep-ph/0205073] [INSPIRE].
43. J. Bernabeu, A. Pich and A. Santamaria, Top quark mass from radiative corrections to the Z → bb̄ decay, Nucl. Phys. B 363 (1991) 326 [INSPIRE].
44. B.A. Kniehl and J.H. Kuhn, QCD corrections to the Z decay rate, Nucl. Phys. B 329 (1990) 547 [INSPIRE].
45. M.E. Peskin and T. Takeuchi, Estimation of oblique electroweak corrections, Phys. Rev. D 46 (1992) 381 [INSPIRE].
46. O. Eberhardt, A. Lenz and J. Rohrwild, Less space for a new family of fermions, Phys. Rev. D 82 (2010) 095006 [arXiv:1005.3505] [INSPIRE].
47. J.R. Forshaw, D. Ross and B. White, Higgs mass bounds in a triplet model, JHEP 10 (2001) 007 [hep-ph/0107232] [INSPIRE].
48. LEP Electroweak Working Group webpage, status of August 2009, http://lepewwg.web.cern.ch/LEPEWWG/.
49. M.S. Chanowitz, Bounding CKM mixing with a fourth family, Phys. Rev. D 79 (2009) 113008 [arXiv:0904.3570] [INSPIRE].
50. P.H. Frampton, P. Hung and M. Sher, Quarks and leptons beyond the third generation, Phys. Rept. 330 (2000) 263 [hep-ph/9903387] [INSPIRE].
51. J.M. Campbell, R. Frederix, F. Maltoni and F. Tramontano, Next-to-leading-order predictions for t-channel single-top production at hadron colliders, Phys. Rev. Lett. 102 (2009) 182003 [arXiv:0903.0005] [INSPIRE].
52. + 2 jet production at hadron colliders, Phys. Rev. D 65 (2002) 113007 [hep-ph/0202176] [INSPIRE].
53. Y. Chao et al., Threshold effects in the decay of heavy b' and t' quarks, Phys. Rev. D 84 (2011) 014029 [arXiv:1101.0592] [INSPIRE].
54. A. Dighe, D. Ghosh, R.M. Godbole and A. Prasath, Large mass splittings for fourth generation fermions allowed by LHC Higgs exclusion, arXiv:1204.3550 [INSPIRE].