Difference in B^+ and B^0 Direct CP Asymmetry as Effect of a Fourth Generation

Details Difference in B^+ and B^0 Direct CP Asymmetry as Effect of a Fourth Generation Difference in B^+ and B^0 Direct CP Asymmetry as Effect of a Fourth Generation

2005-03-08

arxiv.org/abs/hep-ph/0503072v2

Phys.Rev.Lett. 95 (2005) 141601

Physics

High Energy Physics

High Energy Physics - Phenomenology

Text reorganized, including adding discussion of DCPV in b -> s gamma, to appear in Phys. Rev. Lett

Scientific paper

10.1103/PhysRevLett.95.141601

Direct CP violation in B^0-> K^+\pi^- decay has emerged at -10% level, but the asymmetry in B^+ -> K^+\pi^0 mode is consistent with zero. This difference points towards possible New Physics in the electroweak penguin operator. We point out that a sequential fourth generation, with sizable V^*_{t's}V_{t'b} and near maximal phase, could be a natural cause. We use the perturbative QCD factorization approach for B-> K\pi amplitudes. While the B^0-> K^+\pi^- mode is insensitive to t', we critically compare t' effects on direct CP violation in B^+ -> K^+\pi^0 with b-> s\ell^+\ell^- and B_s mixing. If the K^+\pi^0-K^+\pi^- asymmetry difference persists, we predict \sin2\Phi_{B_s} to be negative.

Affiliated with

Also associated with

No associations

Rating

Difference in B^+ and B^0 Direct CP Asymmetry as Effect of a Fourth Generation 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 Difference in B^+ and B^0 Direct CP Asymmetry as Effect of a Fourth Generation, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Difference in B^+ and B^0 Direct CP Asymmetry as Effect of a Fourth Generation will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFWR-SCP-O-403387