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arXiv · 1711.01162

Resolved Power Corrections to the Inclusive Decay $\bar B \to X_s \ell^+\ell^-$

Tobias Hurth·Michael Benzke·Michael Fickinger·Sascha Turczyk
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Abstract

We identify the correct power counting of all the variables in the low-$q^2$ window of the inclusive decay $\bar B \to X_s \ell^+\ell^-$ within the effective theory SCET if a hadronic mass cut is imposed. Furthermore we analyse the resolved power corrections at the order $1/m_b$ in a systematic way. As a special feature, the resolved contributions stay nonlocal when the hadronic mass cut is released. Therefore they represent an irreducible uncertainty independent of the hadronic mass cut.

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Tobias Hurth, Michael Benzke, Michael Fickinger, Sascha Turczyk. 2017-11-03. Resolved Power Corrections to the Inclusive Decay $\bar B \to X_s \ell^+\ell^-$. https://arxiv.org/abs/1711.01162

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