Erratum to: Dimension-six matrix elements for meson mixing and lifetimes from sum rules
نویسندگان
چکیده
منابع مشابه
B-Meson Mixing and Lifetimes
Bd and Bs meson systems play a fundamental role to test and improve our understanding of Standard Model flavor dynamics. The mixing parameters ∆md,s represent important constraints in the unitarity triangle analysis. Their theoretical estimates require non-perturbative calculations of B-meson decay constants and B-parameters; accurate results, recently obtained from the lattice, are reviewed. O...
متن کاملFour-quark Operators Relevant to B Meson Lifetimes from QCD Sum Rules
At the order of 1/mb , the B meson lifetimes are controlled by the hadronic matrix elements of some four-quark operators. The nonfactorizable magnitudes of these four-quark operator matrix elements are analyzed by QCD sum rules in the framework of heavy quark effective theory. The vacuum saturation for color-singlet four-quark operators is justified at hadronic scale, and the nonfactorizable ef...
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The q2 dependence of the π-η mixing amplitude is examined with the use of QCD sum rules. The linear slope of the mixing function θ(q2) is found to be much smaller than that for ρ-ω mixing. Thus the mixing amplitude is approximately the same in the space-like region as in the time-like one, and one may neglect the q2 dependence of the mixing. A comparison between a hadron-meson, an effective chi...
متن کاملShort-distance matrix elements for D0-meson mixing from Nf=2+1 lattice QCD
Department of Computational Mathematics, Science and Engineering, Department of Physics and Astronomy, Michigan State University, East Lansing, Michigan 48824, USA Department of Physics, Washington University, St. Louis, Missouri 63130, USA School of Physics and Astronomy, University of Glasgow, Glasgow G12 8QQ, United Kingdom Department of Physics, University of Illinois, Urbana, Illinois 6180...
متن کاملMatrix elements of Four-quark Operators Relevant to Lifetime Difference ∆ΓBs from QCD Sum Rules
We extract the matrix elements of four quark operators QL,S relevant to the Bs and B̄s life time difference from QCD sum rules. We find the vacuum saturation approximation works reasonably well, i.e., within 10%. We discuss the implications of our results and compare them with the recent lattice QCD determination. PACS Indices: 12.38.Lg, 12.39.Hg, 13.25.Hw, 13.30.-a.
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ژورنال
عنوان ژورنال: Journal of High Energy Physics
سال: 2020
ISSN: 1029-8479
DOI: 10.1007/jhep06(2020)162