TY - JOUR
T1 - Axigluon on like-sign charge asymmetry Aslb, FCNCs and CP asymmetries in B decays
AU - Chen, Chuan Hung
AU - Faisel, Gaber
N1 - Funding Information:
This work is supported by the National Science Council of R.O.C. under Grant No. NSC-97-2112-M-006-001-MY3 . The author C.-H.C. would like to thank Prof. Young-Chung Hsue for his help on using plot tool. G. Faisel would like to thank the National Center for Theoretical Sciences (NCTS) at Cheng Kung University for the hospitality where this work has been done.
PY - 2011/2/14
Y1 - 2011/2/14
N2 - A non-universal axigluon in generalized chiral color models leads to flavor changing neutral currents (FCNCs) at tree level. We analyze phenomenologically the new contributions to Bq (q=d,s) mixing and the related CP asymmetries (CPAs) that are generated by axigluon exchange. We find that although ΔmBq can give a strict constraint on the parameters of b→q transition, the precise measurement of sin2βJ/ΨK0 can further exclude the parameter space of b→d transition. The axigluon-mediated effects can enhance the like-sign dimuon charge asymmetry Aslb by one order of magnitude larger than the standard model prediction. Accordingly, large CPA sin2βsJ/Ψφ and CPA difference sin2βJψK0-sin2βφK0 are achieved.
AB - A non-universal axigluon in generalized chiral color models leads to flavor changing neutral currents (FCNCs) at tree level. We analyze phenomenologically the new contributions to Bq (q=d,s) mixing and the related CP asymmetries (CPAs) that are generated by axigluon exchange. We find that although ΔmBq can give a strict constraint on the parameters of b→q transition, the precise measurement of sin2βJ/ΨK0 can further exclude the parameter space of b→d transition. The axigluon-mediated effects can enhance the like-sign dimuon charge asymmetry Aslb by one order of magnitude larger than the standard model prediction. Accordingly, large CPA sin2βsJ/Ψφ and CPA difference sin2βJψK0-sin2βφK0 are achieved.
UR - http://www.scopus.com/inward/record.url?scp=79251619253&partnerID=8YFLogxK
UR - http://www.scopus.com/inward/citedby.url?scp=79251619253&partnerID=8YFLogxK
U2 - 10.1016/j.physletb.2011.01.010
DO - 10.1016/j.physletb.2011.01.010
M3 - Article
AN - SCOPUS:79251619253
VL - 696
SP - 487
EP - 494
JO - Physics Letters, Section B: Nuclear, Elementary Particle and High-Energy Physics
JF - Physics Letters, Section B: Nuclear, Elementary Particle and High-Energy Physics
SN - 0370-2693
IS - 5
ER -