Search for Lepton-Flavor Violating Decays B+ →k+μ±eâ"

LHCb Collaboration

doi:10.1103/PhysRevLett.123.241802

Search for Lepton-Flavor Violating Decays B+ →k+μ±eâ"

LHCb Collaboration

Physics and Astronomy

Research output: Contribution to journal › Article › peer-review

8 Citations (Scopus)

Abstract

A search for the lepton-flavor violating decays B+→K+μ±eâ" is performed using a sample of proton-proton collision data, collected with the LHCb experiment at center-of-mass energies of 7 and 8 TeV and corresponding to an integrated luminosity of 3 fb-1. No significant signal is observed, and upper limits on the branching fractions are set as B(B+→K+μ-e+)<7.0(9.5)×10-9 and B(B+→K+μ+e-)<6.4(8.8)×10-9 at 90% (95)% confidence level. The results improve the current best limits on these decays by more than one order of magnitude.

Original language	English
Article number	241802
Journal	Physical Review Letters
Volume	123
Issue number	24
DOIs	https://doi.org/10.1103/PhysRevLett.123.241802
Publication status	Published - 12 Dec 2019

ASJC Scopus subject areas

General Physics and Astronomy

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10.1103/PhysRevLett.123.241802Licence: Creative Commons: Attribution (CC BY)

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@article{05bf71c097ed411f815e5eb916e83f29,

title = "Search for Lepton-Flavor Violating Decays B+ →k+μ±e{\^a}{"}",

abstract = "A search for the lepton-flavor violating decays B+→K+μ±e{\^a}{"} is performed using a sample of proton-proton collision data, collected with the LHCb experiment at center-of-mass energies of 7 and 8 TeV and corresponding to an integrated luminosity of 3 fb-1. No significant signal is observed, and upper limits on the branching fractions are set as B(B+→K+μ-e+)<7.0(9.5)×10-9 and B(B+→K+μ+e-)<6.4(8.8)×10-9 at 90\% (95)\% confidence level. The results improve the current best limits on these decays by more than one order of magnitude.",

author = "\{LHCb Collaboration\} and R. Aaij and \{Abell{\'a}n Beteta\}, C. and T. Ackernley and B. Adeva and M. Adinolfi and Aidala, \{C. A.\} and Z. Ajaltouni and S. Akar and P. Albicocco and J. Albrecht and F. Alessio and M. Alexander and \{Alfonso Albero\}, A. and G. Alkhazov and \{Alvarez Cartelle\}, P. and Alves, \{A. A.\} and S. Amato and Y. Amhis and L. An and L. Anderlini and G. Andreassi and M. Andreotti and Andrews, \{J. E.\} and F. Archilli and P. D'Argent and \{Arnau Romeu\}, J. and A. Artamonov and M. Artuso and K. Arzymatov and E. Aslanides and M. Atzeni and B. Audurier and S. Bachmann and Back, \{J. J.\} and S. Bifani and R. Calladine and G. Chatzikonstantinidis and N. Cooke and N. Farley and P. Griffith and P. Ilten and C. Lazzeroni and L. Pescatore and J. Plews and D. Popov and A. Sergi and Slater, \{M. W.\} and Watson, \{N. K.\} and T. Williams and Zarebski, \{K. A.\}",

year = "2019",

month = dec,

day = "12",

doi = "10.1103/PhysRevLett.123.241802",

language = "English",

volume = "123",

journal = "Physical Review Letters",

issn = "0031-9007",

publisher = "American Physical Society (APS)",

number = "24",

}

TY - JOUR

T1 - Search for Lepton-Flavor Violating Decays B+ →k+μ±eâ"

AU - LHCb Collaboration

AU - Aaij, R.

AU - Abellán Beteta, C.

AU - Ackernley, T.

AU - Adeva, B.

AU - Adinolfi, M.

AU - Aidala, C. A.

AU - Ajaltouni, Z.

AU - Akar, S.

AU - Albicocco, P.

AU - Albrecht, J.

AU - Alessio, F.

AU - Alexander, M.

AU - Alfonso Albero, A.

AU - Alkhazov, G.

AU - Alvarez Cartelle, P.

AU - Alves, A. A.

AU - Amato, S.

AU - Amhis, Y.

AU - An, L.

AU - Anderlini, L.

AU - Andreassi, G.

AU - Andreotti, M.

AU - Andrews, J. E.

AU - Archilli, F.

AU - D'Argent, P.

AU - Arnau Romeu, J.

AU - Artamonov, A.

AU - Artuso, M.

AU - Arzymatov, K.

AU - Aslanides, E.

AU - Atzeni, M.

AU - Audurier, B.

AU - Bachmann, S.

AU - Back, J. J.

AU - Bifani, S.

AU - Calladine, R.

AU - Chatzikonstantinidis, G.

AU - Cooke, N.

AU - Farley, N.

AU - Griffith, P.

AU - Ilten, P.

AU - Lazzeroni, C.

AU - Pescatore, L.

AU - Plews, J.

AU - Popov, D.

AU - Sergi, A.

AU - Slater, M. W.

AU - Watson, N. K.

AU - Williams, T.

AU - Zarebski, K. A.

PY - 2019/12/12

Y1 - 2019/12/12

N2 - A search for the lepton-flavor violating decays B+→K+μ±eâ" is performed using a sample of proton-proton collision data, collected with the LHCb experiment at center-of-mass energies of 7 and 8 TeV and corresponding to an integrated luminosity of 3 fb-1. No significant signal is observed, and upper limits on the branching fractions are set as B(B+→K+μ-e+)<7.0(9.5)×10-9 and B(B+→K+μ+e-)<6.4(8.8)×10-9 at 90% (95)% confidence level. The results improve the current best limits on these decays by more than one order of magnitude.

AB - A search for the lepton-flavor violating decays B+→K+μ±eâ" is performed using a sample of proton-proton collision data, collected with the LHCb experiment at center-of-mass energies of 7 and 8 TeV and corresponding to an integrated luminosity of 3 fb-1. No significant signal is observed, and upper limits on the branching fractions are set as B(B+→K+μ-e+)<7.0(9.5)×10-9 and B(B+→K+μ+e-)<6.4(8.8)×10-9 at 90% (95)% confidence level. The results improve the current best limits on these decays by more than one order of magnitude.

UR - https://www.scopus.com/pages/publications/85076561319

U2 - 10.1103/PhysRevLett.123.241802

DO - 10.1103/PhysRevLett.123.241802

M3 - Article

C2 - 31922836

AN - SCOPUS:85076561319

SN - 0031-9007

VL - 123

JO - Physical Review Letters

JF - Physical Review Letters

IS - 24

M1 - 241802

ER -

Search for Lepton-Flavor Violating Decays B+ →k+μ±eâ"

Abstract

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