CP Violating Asymmetry in Stop Decay into Bottom and Chargino

Details CP Violating Asymmetry in Stop Decay into Bottom and Chargino CP Violating Asymmetry in Stop Decay into Bottom and Chargino

2009-12-23

arxiv.org/abs/0912.4675v3

Eur.Phys.J.C70:1017-1024,2010

Physics

High Energy Physics

High Energy Physics - Phenomenology

Version accepted for publication in Eur. Phys. J. C (8 pages, 8 figures)

Scientific paper

10.1140/epjc/s10052-010-1501-5

In the MSSM with complex parameters, loop corrections to the decay of a stop into a bottom quark and a chargino can lead to a CP violating decay rate asymmetry. We calculate this asymmetry at full one-loop level and perform a detailed numerical study, analyzing the dependence on the parameters and complex phases involved. If the stop can decay into a gluino, the self-energy and the vertex correction dominate due to the strong coupling. It is shown that the vertex contribution is always suppressed. We therefore give a simple approximate formula for the asymmetry. We account for the constraints on the parameters coming from several experimental limits. Asymmetries up to 25 percent are obtained. We also comment on the feasibility of measuring this asymmetry at the LHC.

Affiliated with

Also associated with

No associations

Rating

CP Violating Asymmetry in Stop Decay into Bottom and Chargino 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 CP Violating Asymmetry in Stop Decay into Bottom and Chargino, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and CP Violating Asymmetry in Stop Decay into Bottom and Chargino will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFWR-SCP-O-363590