Physics – High Energy Physics – High Energy Physics - Phenomenology
Scientific paper
2010-10-21
Phys.Rev.D83:036003,2011
Physics
High Energy Physics
High Energy Physics - Phenomenology
12 pages, 13 figures
Scientific paper
10.1103/PhysRevD.83.036003
Recently, the D0 collaboration reported a large CP violation in the same-sign dimuon charge asymmetry which has the $3.2 \sigma$ deviation from the value estimated in the Standard Model. In this paper, several new physics models are considered: the MSSM, two Higgs doublet model, the recent dodeca model, and a new $Z'$ model. Generally, it is hard to achieve such a large CP violation consistently with other experimental constraints. We find that a scheme with extra non-anomalous U(1)$'$ gauge symmetry is barely consistent. In general, the extra $Z'$ gauge boson induces the flavor changing neutral current interactions at tree level, which is the basic reason allowing a large new physics CP violation. To preserve the U(1)$'$ symmetry at high energy, SU(2)$_L$ singlet exotic heavy quarks of mass above 1 TeV and the Standard Model gauge singlet scalars are introduced.
Kim Jihn E.
Seo Min-Seok
Shin Seodong
No associations
LandOfFree
The D0 same-charge dimuon asymmetry and possibile new CP violation sources in the $B_s-\bar{B}_s$ system does not yet have a rating. At this time, there are no reviews or comments for this scientific paper.
If you have personal experience with The D0 same-charge dimuon asymmetry and possibile new CP violation sources in the $B_s-\bar{B}_s$ system, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and The D0 same-charge dimuon asymmetry and possibile new CP violation sources in the $B_s-\bar{B}_s$ system will most certainly appreciate the feedback.
Profile ID: LFWR-SCP-O-661452