A variety of CP violating B-decays
نویسنده
چکیده
A variety of CP violating asymmetries in B” decays is predicted in the Standard Model in terms of CKM (CabibboKobayashi-Maskawa) complex phases. These phases can also be determined from rate measurements of certain B+ and Bdecays. We focus on the following processes: B” + (CIKs, ?~+lr-, rr”o?ro, pier’, B, + D:K-, ~‘7, B+ + D’($)K+, rr+rr’, ?r’K+, ?r+K’, qKf and their charge-conjugates. Complications due to gluonic-penguin and electmweakpenguin amplitudes are dealt with and are resolved. The importance of final-state interaction phases in charged B decay asymmetries is demonstrated in B+ -+ xdrr+, xco --+ ~+rthrough the effect of the xd width.
منابع مشابه
Observing Direct CP Violation in Untagged B-Meson Decays
Abstract Direct CP violation can exist in untagged B-meson decays to self-conjugate, three-particle final states; it would be realized as a population asymmetry in the untagged decay rate across the mirror line of the Dalitz plot of the three-body decay. We explore the numerical size of this direct CP-violating effect in a variety of B-meson decays to three pseudoscalar mesons; we show that the...
متن کاملFlavour-Conserving CP Phases in Supersymmetry and Implications for Exclusive B Decays
We study rare exclusive B decays based on the quark-level transition b → s(d) l+l−, where l = e or μ, in the context of supersymmetric theories with minimal flavour violation. We present analytic expressions for various mixing matrices in the presence of new CP-violating phases, and examine their impact on observables involving B and B̄ decays. An estimate is obtained for CPviolating asymmetries...
متن کاملCKM Matrix : Present and Future a
We review the present status of the CKM matrix and we offer some visions of its future. After a brief presentation of the theoretical framework for weak decays we discuss the following topics: i) CKM matrix from tree level decays, ii) Standard analysis of the unitarity triangle, iii) CKM matrix from rare and CP violating Kand B-decays, iv) CKM matrix from CP violation in twobody B-decays. In pa...
متن کاملCkm03 Sin(2β): Status and Prospects
An overview of the observation of CP violation in the neutral B system, and the measurements of the CP-violating asymmetry sin2β with B → charmonium K 0 S ,L events, performed by the BABAR and Belle experiments at the SLAC and KEK B factories is given. In addition, the measurements of sin2β with several other modes are described, including B → φK 0 S , which, as the leading contribution is from...
متن کاملCP Violating tbW Interaction and B Decays
We calculate the effect of new, CP violating, interactions parameterized by an anomalous tbW coupling on CP -odd observables in B decays. We find that couplings consistent with current bounds can significantly modify the standard model predictions for some CP asymmetries that will be measured in B factories. For example, the three-generation standard model relation α+ β + γ = π could have corre...
متن کاملذخیره در منابع من
با ذخیره ی این منبع در منابع من، دسترسی به آن را برای استفاده های بعدی آسان تر کنید
عنوان ژورنال:
دوره شماره
صفحات -
تاریخ انتشار 1995