Hadronic B Decays to Charmless V T Final States
نویسندگان
چکیده
Charmless hadronic decays of B mesons to a vector meson (V ) and a tensor meson (T ) are analyzed in the frameworks of both flavor SU(3) symmetry and generalized factorization. We also make comments on B decays to two tensor mesons in the final states. Certain ways to test validity of the generalized factorization are proposed, using B → V T decays. We calculate the branching ratios and CP asymmetries using the full effective Hamiltonian including all the penguin operators and the form factors obtained in the non-relativistic quark model of Isgur, Scora, Grinstein and Wise. ∗[email protected], http://phya.yonsei.ac.kr/ ̃cskim/ †[email protected] ‡[email protected]
منابع مشابه
K(k)x: Decay Distributions, Branching Ratios and Cp Asymmetries
The semi-inclusive charmless hadronic decays B → K(K)X , where X is a hadronic recoil system containing no charmed and strange particles, are useful for studying direct CP violation and determining the weak phase γ . Direct CP violation can also be studied with exclusive or inclusive charmless hadronic B decays. Although theoretical uncertainties in inclusive decays may be small, it is experime...
متن کاملFirst observation of five charmless hadronic B decays
There has been much progress in measurements of charmless hadronic B decays during 1997. Building on the previous indications from CLEO and LEP, CLEO now has clear signals in five exclusive final states: K + π − , K 0 π + , η ′ K + , η ′ K 0 , and ωK +. The branching fractions for the η ′ K modes are several times larger than the others. A similar strikingly large signal has been seen in the in...
متن کاملA ug 1 99 9 CLEO CONF 99 - 14 Study of charmless hadronic B decays into the final states
We have studied charmless hadronic decays of B mesons into two-body final states with kaons and pions. We present preliminary results based on 9.66 million BB̄ pairs collected with the CLEO detector. We have made the first observation of the decay B → π+π−, with the branching fraction of Br(B → π+π−) = (4.7 −1.5 ± 0.6) × 10 −6. We have also observed for the first time the decay B → K0π0 with the...
متن کاملCharmless Two-Body and Quasi-Two-Body B-decays at BABAR
B-mesons decaying into charmless hadronic final states are rare events. The leading tree diagrams are CKM suppressed and loop (penguin) diagrams typically contribute at comparable magnitude. Decay rates and CP asymmetries may deviate from Standard Model expectations if yet-unknown heavy particles contribute in the loop. The abundance of related decays allows for multiple independent measurement...
متن کاملHadronic Bu and Bd decays
The PEP-II and KEKB B factories have very recently produced a number of new measurements or limits for B decay modes to hadronic final states. These include some b → c modes bearing on the interpretation of experiments aiming to measure the CKM angle γ (φ3), charmless baryonic three-body final states with their two-body substructure, and a number of charmless mesonic branching fractions and cha...
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 2001