Precise predictions for B -> Xc tau nu decay distributions

Abstract

We derive precise standard model predictions for the dilepton invariant mass and the tau energy distributions in inclusive B -> Xc tau nu decay. We include Lambda_QCD^2/m_b^2 and alpha_s corrections using the 1S short-distance mass scheme, and estimate shape function effects near maximal tau energy. These results can improve the sensitivity of b -> c tau nu related observables to beyond standard model physics.

7 pages, 4 figures; v2: journal version

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Cited by in corpus (21)

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• Flavor models for $\bar{B}\to D^{(\ast )}\tau \bar{\nu }$
• Scalar contributions to $b\to c(u)\tau \nu$ transitions
• Footprints of New Physics in $b\to c\tau \nu$ Transitions
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• Precise predictions for ${\Lambda }_b\to {\Lambda }_c$ semileptonic decays
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• Flavor Anomalies in Heavy Quark Decays
• Inclusive Semitauonic $B$ Decays to Order $\mathcal{O}({\Lambda }_{QCD}^3/m_b^3)$
• Constrained second-order power corrections in HQET: $R(D^{(\ast )})$, $|V_{cb}|$, and new physics
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• Inclusive semi-leptonic B meson decay structure functions from lattice QCD
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• Mapping out the Space for New Physics with Leptonic and Semileptonic $B_{(c)}$ Decays
• Form Factor Counting and HQET Matching for New Physics in ${\Lambda }_b\to {\Lambda }_c^{\ast }l\nu$
• Interpreting LHCb's ${\Lambda }_b\to {\Lambda }_c\tau \bar{\nu }$ measurement and puzzles in semileptonic ${\Lambda }_b$ decays
• Status of $|V_{cb}|$ and $|V_{ub}|$ CKM matrix elements
• Exploring the $\tau$ polarization in $B\to X\tau \bar{\nu }$ along different axes