Subleading power factorization in B ¯ → X s ℓ + ℓ − $$ \overline{B}\to {X}_s{\ell}^{+}{\ell}^{-}

Abstract We analyze the factorization to subleading power in the flavor changing neutral current process B ¯ → X s ℓ + ℓ − $$ \overline{B}\to {X}_s{\ell}^{+}{\ell}^{-} $$ . In particular, we compute the so-called resolved contributions and explore the numerical impact on observables. In these contri...

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Bibliographic Details
Published inThe journal of high energy physics Vol. 2017; no. 10; pp. 1 - 32
Main Authors Benzke, Michael, Hurth, Tobias, Turczyk, Sascha
Format Journal Article
LanguageEnglish
Published SpringerOpen 01.10.2017
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Summary:Abstract We analyze the factorization to subleading power in the flavor changing neutral current process B ¯ → X s ℓ + ℓ − $$ \overline{B}\to {X}_s{\ell}^{+}{\ell}^{-} $$ . In particular, we compute the so-called resolved contributions and explore the numerical impact on observables. In these contributions the virtual photon couples to light partons instead of connecting directly to the effective weak-interaction vertex. They represent an irreducible uncertainty in the inclusive B ¯ → X s ℓ + ℓ − $$ \overline{B}\to {X}_s{\ell}^{+}{\ell}^{-} $$ decay which cannot be removed by relaxing the experimentally necessary cuts in the hadronic mass spectrum.
ISSN:1029-8479
1029-8479
DOI:10.1007/JHEP10(2017)031