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Title: New physics in B meson mixing: Future sensitivity and limitations

Abstract

Funded by SCOAP3. The mixing of neutral mesons is sensitive to some of the highest scales probed in laboratory experiments. In light of the planned LHCb Upgrade II, a possible upgrade of Belle II, and the broad interest in flavor physics in the tera-Z phase of the proposed FCC-ee program, we study constraints on new physics contributions to Bd and Bs mixings which can be obtained in these benchmark scenarios. We explore the limitations of this program, and identify the measurement of |Vcb| as one of the key ingredients in which progress beyond current expectations is necessary to maximize future sensitivity. We speculate on possible solutions to this bottleneck. Given the current tension with the standard model (SM) in semileptonic B decays, we explore how its resolution may impact the search for new physics in mixing. Even if new physics has the same Cabibbo-Kobayashi-Maskawa and loop suppressions of flavor changing processes as the SM, the sensitivity will reach 2 TeV, and it can be much higher if any SM suppressions are lifted. We illustrate the discovery potential of this program.

Authors:
ORCiD logo; ORCiD logo; ORCiD logo; ; ; ORCiD logo; ORCiD logo
Publication Date:
Research Org.:
Lawrence Berkeley National Lab. (LBNL), Berkeley, CA (United States)
Sponsoring Org.:
USDOE Office of Science (SC); EU Commission; Generalitat Valenciana
OSTI Identifier:
1668121
Alternate Identifier(s):
OSTI ID: 1756384
Grant/Contract Number:  
AC02-05CH11231; FPA2017-84445-P; Prometeo/2017/053
Resource Type:
Published Article
Journal Name:
Physical Review D
Additional Journal Information:
Journal Name: Physical Review D Journal Volume: 102 Journal Issue: 5; Journal ID: ISSN 2470-0010
Publisher:
American Physical Society (APS)
Country of Publication:
United States
Language:
English
Subject:
72 PHYSICS OF ELEMENTARY PARTICLES AND FIELDS; Flavor changing neutral currents; hadron mixing; quark mixing

Citation Formats

Charles, Jérôme, Descotes-Genon, Sébastien, Ligeti, Zoltan, Monteil, Stéphane, Papucci, Michele, Trabelsi, Karim, and Vale Silva, Luiz. New physics in B meson mixing: Future sensitivity and limitations. United States: N. p., 2020. Web. https://doi.org/10.1103/PhysRevD.102.056023.
Charles, Jérôme, Descotes-Genon, Sébastien, Ligeti, Zoltan, Monteil, Stéphane, Papucci, Michele, Trabelsi, Karim, & Vale Silva, Luiz. New physics in B meson mixing: Future sensitivity and limitations. United States. https://doi.org/10.1103/PhysRevD.102.056023
Charles, Jérôme, Descotes-Genon, Sébastien, Ligeti, Zoltan, Monteil, Stéphane, Papucci, Michele, Trabelsi, Karim, and Vale Silva, Luiz. Mon . "New physics in B meson mixing: Future sensitivity and limitations". United States. https://doi.org/10.1103/PhysRevD.102.056023.
@article{osti_1668121,
title = {New physics in B meson mixing: Future sensitivity and limitations},
author = {Charles, Jérôme and Descotes-Genon, Sébastien and Ligeti, Zoltan and Monteil, Stéphane and Papucci, Michele and Trabelsi, Karim and Vale Silva, Luiz},
abstractNote = {Funded by SCOAP3. The mixing of neutral mesons is sensitive to some of the highest scales probed in laboratory experiments. In light of the planned LHCb Upgrade II, a possible upgrade of Belle II, and the broad interest in flavor physics in the tera-Z phase of the proposed FCC-ee program, we study constraints on new physics contributions to Bd and Bs mixings which can be obtained in these benchmark scenarios. We explore the limitations of this program, and identify the measurement of |Vcb| as one of the key ingredients in which progress beyond current expectations is necessary to maximize future sensitivity. We speculate on possible solutions to this bottleneck. Given the current tension with the standard model (SM) in semileptonic B decays, we explore how its resolution may impact the search for new physics in mixing. Even if new physics has the same Cabibbo-Kobayashi-Maskawa and loop suppressions of flavor changing processes as the SM, the sensitivity will reach 2 TeV, and it can be much higher if any SM suppressions are lifted. We illustrate the discovery potential of this program.},
doi = {10.1103/PhysRevD.102.056023},
journal = {Physical Review D},
number = 5,
volume = 102,
place = {United States},
year = {2020},
month = {9}
}

Journal Article:
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https://doi.org/10.1103/PhysRevD.102.056023

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