A general formulation of inclusive sum rules
نویسندگان
چکیده
منابع مشابه
Isospin Sum Rules for Inclusive Cross-sections
Recently a number of papers [l-3] have appeared in which lsospin sum rules and inequalities for inclusive processes are discussed. We shall present in this paper a systemaltc derivation, with the aid of the graphical technique of Yutsis, Levinson and Vanagas [4] (YLV), of all isospin sum rules (i.e. isospin equalities for distribution functions). Our procedure can be used, moreover, to derive a...
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By calculating the O(αs) corrections to inclusive heavy-to-light sum rules we find model independent upper and lower bounds on form factors for B→πlν and B→ρlν. We use the bounds to rule out model predictions. Some models violate the bounds only for certain ranges of sum rule input parameters Λ̄ ≃ mB −mb and λ1, or for certain choices of model parameters, while others obey or violate the bounds ...
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Comparing the result of inserting a complete set of physical states in a time ordered product of b decay currents with the operator product expansion gives a class of zero recoil sum rules. They sum over physical states with excitation energies less than ∆, where ∆ is much greater than the QCD scale and much less than the heavy charm and bottom quark masses. These sum rules have been used to de...
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We describe the construction of light-cone sum rules (LCSRs) for exclusive B-meson decays into light energetic hadrons from correlation functions within soft-collinear effective theory (SCET). As an example, we consider the SCET sum rule for the B → π transition form factor at large recoil, including radiative corrections from hard-collinear loop diagrams at first order in the strong coupling c...
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ژورنال
عنوان ژورنال: Lettere al Nuovo Cimento
سال: 1971
ISSN: 1827-613X
DOI: 10.1007/bf02789636