Precision for B-meson matrix elements
نویسندگان
چکیده
منابع مشابه
Weak Matrix Elements and K-meson Physics
Kaon Physics is a very complicated blend of Ultraviolet and Infrared effects which still defies complete physical understanding. The problem consists in the large enhancement (≈ 20) of the ∆I = 12 amplitude with respect to the ∆I = 32 one. Being a process involving hadrons, Kdecay must be treated non-perturbatively, so that lattice discretization is the ideal tool to deal with this problem. In ...
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We present results of quenched lattice calculations of the matrix elements relevant for Bd−B̄d and Bs−B̄s mixing in the Standard Model. Results for the corresponding SU(3)-breaking ratios, which can be used to constrain or determine |Vtd|, are also given. The calculations are performed at two values of the lattice spacing, corresponding to β = 6.0 and β = 6.2, with quarks described by a mean-fiel...
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We determine the chiral corrections to the matrix elements of the ∆B = 0 fourquark operators which are relevant to the studies of the ratios of lifetimes of heavylight mesons as well as to the power corrections to the inclusive semileptonic heavyto-light decays. The chiral logarithmic corrections computed here can be combined with the forthcoming estimates of the corresponding matrix elements o...
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ژورنال
عنوان ژورنال: Journal of High Energy Physics
سال: 2008
ISSN: 1029-8479
DOI: 10.1088/1126-6708/2008/01/076