Study of neutral Bs mixing in a family non-universal Z' model

Lu Gong-Ru; Li Xin-Qiang; Li Yan-Min; Su Fang

doi:10.7498/aps.61.241301

Abstract

Motivated by recent measurements of the neutral Bs-meson mixing, obtained by LHCb group and the Tevatron, and the possibility to have sizable NP effects in 12s, we revisit the Bs mixing in a family non-universal Z' model. We assume that the Z' boson contributes to the off-diagonal element M12s and also to the off-diagonal element 12s via tree-level Z'-induced b scc operators. We find that, with the constraints from Mss and the indirect CP asymmetry in BdJ/KS imposed, the present measured 1 experimental ranges for afss could not be reproduced. Thus, such a specific model could not simultaneously explain the present data on Bs mixing. It is expected that with the operation of the LHCb group and the future super B experiments, more accurate measurements, especially of the flavour-specific CP asymmetries, could shed light on the issue.

Keywords:

Authors and contacts

1.
Department of Physics, Henan Normal University, Xinxiang 453007, China;
2.
Institute of Particle Physics, Huazhong Normal University, Wuhan 430079, China
Funds: Project supported by the Specialized Research Fund for the Doctoral Program of Higher Education of China (Grant No. 20104104120001), and the National Natural Science Foundation of China (Grant Nos. 11005032, 11047125, 10979008).

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Cited By

[1]	Ball P, Fleischer R 2006 Eur. Phys. J. C 48 413
[2]	Asner D 2010 arXiv:1010. 1589
[3]	Abazov V M 2006 Phys. Rev. Lett. 97 021802
[4]	Abulencia A 2006 Phys. Rev. Lett. 97 062003; Abulencia A Phys. Rev. Lett. 97 242003
[5]	Aaij R 2012 Phys. Lett. B 709 177
[6]	The 2011 LHCb-CONF-2011-050 .
[7]	Lenz A J 2011 Phys. Rev. D 84 031501
[8]	Lenz A, Nierste U 2011 arXiv:1102.4274 [hep-ph]
[9]	Lenz A, Nierste U Charles J, Descotes-Genon S, Jantsch A, Kaufhold C, Lacker H, Monteil S, Niess V, T'Jampens S 2011 Phys. Rev. D 83 036004
[10]	Aaltonen T 2011 arXiv:1112.1726
[11]	Abazov V M 2012 Phys. Rev. D 85 032006
[12]	Aaltonen T 2008 Phys. Rev. Lett. 100 161802;Aaltoner T 2008 Phys. Rev. Lett. 100 121803
[13]	Abazov V M 2008 Phys. Rev. Lett. 101 241801
[14]	Aaij R 2012 Phys. Rev. Lett. 108 101803
[15]	Aaij R 2012 Phys. Lett. B 707 497
[16]	Grossman Y, Nir Y, Raz G 2006 Phys. Rev. Lett. 97 151801
[17]	Abazov V M 2010 Phys. Rev. D 82 032001; 2010 Phys. Rev. Lett. 105 081801
[18]	Abazov V M 2011 Phys. Rev. D 84 052007
[19]	Langacker P, Plumacher M 2000 Phys. Rev. D 62 013006
[20]	Barger V, Everett L, Jiang J, Langacker P, Liu T, Wagner C 2009 Phys. Rev. D 80 055008;Barger V, Everett L L, Jiang J, Langacker P, Liu T, Wagner C E M 2009 JHEP 0912 048
[21]	Alok A K, Baek S, London D 2011 JHEP 1107 111
[22]	Buras A J, Gemmler K,Isidori G 2011 Nucl. Phys. B 843 107
[23]	Gorbahn M, Jager S, Nierste U, Trine S 2011 Phys. Rev. D 84 034030
[24]	Buras A J, Jager S, Urban J 2001 Nucl. Phys. B 605 600
[25]	Buras A J 1998 hep-ph/9806471;Buchalla G, Buras A J, Lautenbacher M E 1996 Rev. Mod. Phys. 68 1125
[26]	Shifman M A, Voloshin M B 1985 Sov. J. Nucl. Phys. 41 120 Shifman M A, Voloshin M B 1986 Sov. Phys. JETP 64 698
[27]	Bigi I I Y, Uraltsev N G, Vainshtein A I 1992 Phys. Lett. B 293 430;Bigi I I Y, Uraltsec N G, Vainshtein A I 1993 Erratum-ibid. B 297 477
[28]	Beneke M, Buchalla G, Dunietz I 1996 Phys. Rev. D 54 4419 Benekem, Buchalla G, Duniez I 2011 Erratum-Ibid. D 83 119902
[29]	Dighe A S, Hurth T, Kim C S, Yoshikawa T 2002 Nucl. Phys. B 624 377
[30]	Beneke M, Buchalla G, Greub C, Lenz A, Nierste U 1999 Phys. Lett. B 459 631
[31]	Beneke M, Buchalla G, Lenz A, Nierste U 2003 Phys. Lett. B 576 173
[32]	Ciuchini M, Franco E, Lubicz V, Mescia F, Tarantino C 2003 JHEP 0308 031
[33]	Lenz A, Nierste U 2007 JHEP 0706 072
[34]	Chiang C W, Datta A, Duraisamy M, London D, Nagashima M, Szynkman A 2010 JHEP 1004 031
[35]	Nakamura K 2010 J. Phys. G 37 075021
[36]	Lancaster M arXiv:1107.5255 [hep-ex]
[37]	Wolfenstein L 1983 Phys. Rev. Lett. 51 1945
[38]	Dorsner I, Drobnak J, Fajfer S, Kamenik J F, Kosnik N 2011 JHEP 1111 002
[39]	Colangelo G, Durr S, Juttner A, Lellouch L, Leutwyler H, Lubicz V, Necco S, Sachrajda C T , Simula S ,Vladikas A ,Wenger U, Wittig H 2011 Eur. Phys. J. C 71 1695
[40]	Chetyrkin K G, Kuhn J H, Steinhauser M 2000 Comput. Phys. Commun. 133 43
[41]	Charles J 2005 Eur. Phys. J. C 411
[42]	Acosta D 2005 Phys. Rev. Lett. 95 131801

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Vol. 61, Issue 24 - 2012-12-20

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