Effects of Rparity violation on CP asymmetries in Lambda_b to p pi decay.pdfVIP

Effects of R-parity violation on CP asymmetries in Λb → pπ decay Rukmani Mohanta Physics Department, Panjab University, Chandigarh - 160014, India 0 0 0 Abstract 2 y a M We have studied new CP violating effects in Λb → pπ decay mode, that 4 2 can arise in Minimal Supersymmetric Standard Model with R-parity violation. We have estimated how much R-parity violation modifies the Standard Model 1 predictions for CP asymmetries within the present bounds. We found that in v 0 the R-parity violating model, the rate asymmetry (acp ) is suppressed (about 4 10 times) and the asymmetry parameter A(α) is enhanced (approximately 2 2 5 O(10 ) times) with respect to the SM predictions. 0 0 0 / h p - p e h : v i X r a Typeset using REVT X E 1 One of the most important objects of the upcoming experiments at B factories is to search for CP violation in as many B decay modes as possible so as to establish the pattern of CP violation among various B decays [1]. This then may allow for an experimental test not only of the Standard Model (SM) Cabibbo-Kobayashi-Maskawa (CKM) paradigm of CP violation, but also many extensions of the SM that often contain new sources of CP violation. It is well known that CP violating B decays might constitute an important hunting ground for new physics. This is particularly so since many CP violating asymmetries related to B decays are p