Threshold expansion for heavy-light systems and flavor off-diagonal current-current correlators
نویسندگان
چکیده
منابع مشابه
Four-fermion Heavy Quark Operators and Light Current Amplitudes in Heavy Flavor Hadrons
We introduce and study the properties of the “color-straight” four-quark operators containing heavy and light quark fields. They are of the form (b̄Γbb)(q̄Γqq) where both brackets are color singlets. Their expectation values include the bulk of the nonfactorizable contributions to the nonleptonic decay widths of heavy hadrons. The expectation values of the color-straight operators in the heavy ha...
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ژورنال
عنوان ژورنال: Physical Review D
سال: 2002
ISSN: 0556-2821,1089-4918
DOI: 10.1103/physrevd.66.011502