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Title: Model-independent analysis of semileptonic B decays to D * * for arbitrary new physics

We explore semileptonic B decays to the four lightest excited charm mesons, D**={D 0*,D 1*,D 1,D 2*}, for nonzero charged lepton mass and for all b → cℓ$$\bar{\nu }$$ four-Fermi interactions, including calculation of the O(Λ QCD/m c,b) and O(α s) corrections to the heavy quark limit for all form factors. In the heavy quark limit, some form factors are suppressed at zero recoil; therefore, the O(Λ QCD/m c,b) corrections can be very important. The D** rates exhibit sensitivities to new physics in b → cτ$$\bar{\nu }$$ mediated decays complementary to the D and D* modes. Since they are also important backgrounds to B→D (∗)τ$$\bar{\nu }$$, the correct interpretation of future semitauonic B→D (∗) rate measurements requires consistent treatment of both the D** backgrounds and the signals. Our results allow more precise and more reliable calculations of these B→D**ℓ$$\bar{\nu }$$ decays and are systematically improvable by better data on the e and μ modes. As an example, we show that the D** rates are more sensitive to a new $$\bar{c}$$ σ μνb tensor interaction than the D (∗) rates.
Authors:
 [1] ;  [2] ;  [3]
  1. Physikalisches Institut der Rheinischen Friedrich-Wilhelms-Univ. Bonn, Bonn (Germany); Karlsruher Institute of Technology, Karlsruhe (Germany)
  2. Univ. of California, Berkeley, CA (United States)
  3. Univ. of Cincinnati, Cincinnati, OH (United States)
Publication Date:
Grant/Contract Number:
AC02-05CH11231
Type:
Published Article
Journal Name:
Physical Review D
Additional Journal Information:
Journal Volume: 97; Journal Issue: 7; Related Information: © 2018 authors. Published by the American Physical Society. Published by the American Physical Society under the terms of the »https://creativecommons.org/licenses/by/4.0/» Creative Commons Attribution 4.0 International license. Further distribution of this work must maintain attribution to the author(s) and the published article's title, journal citation, and DOI. Funded by SCOAP 3.; Journal ID: ISSN 2470-0010
Publisher:
American Physical Society (APS)
Research Org:
Lawrence Berkeley National Lab. (LBNL), Berkeley, CA (United States)
Sponsoring Org:
USDOE Office of Science (SC)
Country of Publication:
United States
Language:
English
Subject:
72 PHYSICS OF ELEMENTARY PARTICLES AND FIELDS
OSTI Identifier:
1432900
Alternate Identifier(s):
OSTI ID: 1462969

Bernlochner, Florian U., Ligeti, Zoltan, and Robinson, Dean J.. Model-independent analysis of semileptonic B decays to D** for arbitrary new physics. United States: N. p., Web. doi:10.1103/PhysRevD.97.075011.
Bernlochner, Florian U., Ligeti, Zoltan, & Robinson, Dean J.. Model-independent analysis of semileptonic B decays to D** for arbitrary new physics. United States. doi:10.1103/PhysRevD.97.075011.
Bernlochner, Florian U., Ligeti, Zoltan, and Robinson, Dean J.. 2018. "Model-independent analysis of semileptonic B decays to D** for arbitrary new physics". United States. doi:10.1103/PhysRevD.97.075011.
@article{osti_1432900,
title = {Model-independent analysis of semileptonic B decays to D** for arbitrary new physics},
author = {Bernlochner, Florian U. and Ligeti, Zoltan and Robinson, Dean J.},
abstractNote = {We explore semileptonic B decays to the four lightest excited charm mesons, D**={D0*,D1*,D1,D2*}, for nonzero charged lepton mass and for all b → cℓ$\bar{\nu }$ four-Fermi interactions, including calculation of the O(ΛQCD/mc,b) and O(αs) corrections to the heavy quark limit for all form factors. In the heavy quark limit, some form factors are suppressed at zero recoil; therefore, the O(ΛQCD/mc,b) corrections can be very important. The D** rates exhibit sensitivities to new physics in b → cτ$\bar{\nu }$ mediated decays complementary to the D and D* modes. Since they are also important backgrounds to B→D(∗)τ$\bar{\nu }$, the correct interpretation of future semitauonic B→D(∗) rate measurements requires consistent treatment of both the D** backgrounds and the signals. Our results allow more precise and more reliable calculations of these B→D**ℓ$\bar{\nu }$ decays and are systematically improvable by better data on the e and μ modes. As an example, we show that the D** rates are more sensitive to a new $\bar{c}$ σμνb tensor interaction than the D(∗) rates.},
doi = {10.1103/PhysRevD.97.075011},
journal = {Physical Review D},
number = 7,
volume = 97,
place = {United States},
year = {2018},
month = {4}
}