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}^{-} $$ . In particular, we compute the so-called resolved contributions and explore the numerical impact on observables. In these contri...
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Published in | The journal of high energy physics Vol. 2017; no. 10; pp. 1 - 32 |
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Main Authors | , , |
Format | Journal Article |
Language | English |
Published |
SpringerOpen
01.10.2017
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Subjects | |
Online Access | Get full text |
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Summary: | Abstract We analyze the factorization to subleading power in the flavor changing neutral current process B ¯ → X s ℓ + ℓ − $$ \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. |
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ISSN: | 1029-8479 1029-8479 |
DOI: | 10.1007/JHEP10(2017)031 |