Search for the lepton-flavour violating decays B(s)0→e±μ

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Search for the lepton-flavour violating decays B(s)0→e±μ. / LHCb Collaboration.

In: Journal of High Energy Physics, Vol. 2018, No. 3, 78, 13.03.2018.

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@article{c2010a502a4141b5ae3e9d2a2bf1740a,
title = "Search for the lepton-flavour violating decays B(s)0→e±μ∓",
abstract = "A search for the lepton-flavour violating decays Bs0→e±μ∓ and B0→e±μ∓ is performed based on a sample of proton-proton collision data corresponding to an integrated luminosity of 3 fb−1, collected with the LHCb experiment at centre-of-mass energies of 7 and 8 TeV. The observed yields are consistent with the background-only hypothesis. Upper limits on the branching fraction of the Bs0→e±μ∓ decays are evaluated both in the hypotheses of an amplitude completely dominated by the heavy eigenstate and by the light eigenstate. The results are @/@ℬ(Bs0→e)<6.3(5.4)×10−9 and @/@ℬ(Bs0→e)<7.2(6.0)×10−9 at 95% (90%) confidence level, respectively. The upper limit on the branching fraction of the B0 → e±μ∓ decay is also evaluated, obtaining @/@ℬ(B0→e)<1.3(1.0)×10−9 at 95% (90%) confidence level. These are the strongest limits on these decays to date.",
keywords = "B physics, Branching fraction, Flavor physics, Hadron-Hadron scattering (experiments), Rare decay",
author = "{LHCb Collaboration} and R. Aaij and B. Adeva and M. Adinolfi and Z. Ajaltouni and S. Akar and J. Albrecht and F. Alessio and M. Alexander and {Alfonso Albero}, A. and S. Ali and G. Alkhazov and {Alvarez Cartelle}, P. and Alves, {A. A.} and S. Amato and S. Amerio and Y. Amhis and L. An and L. Anderlini and G. Andreassi and M. Andreotti and Andrews, {J. E.} and Appleby, {R. B.} and F. Archilli and P. d{\textquoteright}Argent and {Arnau Romeu}, J. and A. Artamonov and M. Artuso and E. Aslanides and M. Atzeni and G. Auriemma and M. Baalouch and I. Babuschkin and S. Bachmann and Back, {J. J.} and A. Badalov and C. Baesso and S. Baker and V. Balagura and W. Baldini and S. Bifani and R. Calladine and G. Chatzikonstantinidis and N. Farley and C. Lazzeroni and A. Mazurov and A. Sergi and Watson, {N. K.} and Williams, {M. P.} and Zarebski, {K. A.} and Timothy Williams",
year = "2018",
month = mar,
day = "13",
doi = "10.1007/JHEP03(2018)078",
language = "English",
volume = "2018",
journal = "JHEP",
issn = "1126-6708",
publisher = "Springer",
number = "3",

}

RIS

TY - JOUR

T1 - Search for the lepton-flavour violating decays B(s)0→e±μ∓

AU - LHCb Collaboration

AU - Aaij, R.

AU - Adeva, B.

AU - Adinolfi, M.

AU - Ajaltouni, Z.

AU - Akar, S.

AU - Albrecht, J.

AU - Alessio, F.

AU - Alexander, M.

AU - Alfonso Albero, A.

AU - Ali, S.

AU - Alkhazov, G.

AU - Alvarez Cartelle, P.

AU - Alves, A. A.

AU - Amato, S.

AU - Amerio, S.

AU - Amhis, Y.

AU - An, L.

AU - Anderlini, L.

AU - Andreassi, G.

AU - Andreotti, M.

AU - Andrews, J. E.

AU - Appleby, R. B.

AU - Archilli, F.

AU - d’Argent, P.

AU - Arnau Romeu, J.

AU - Artamonov, A.

AU - Artuso, M.

AU - Aslanides, E.

AU - Atzeni, M.

AU - Auriemma, G.

AU - Baalouch, M.

AU - Babuschkin, I.

AU - Bachmann, S.

AU - Back, J. J.

AU - Badalov, A.

AU - Baesso, C.

AU - Baker, S.

AU - Balagura, V.

AU - Baldini, W.

AU - Bifani, S.

AU - Calladine, R.

AU - Chatzikonstantinidis, G.

AU - Farley, N.

AU - Lazzeroni, C.

AU - Mazurov, A.

AU - Sergi, A.

AU - Watson, N. K.

AU - Williams, M. P.

AU - Zarebski, K. A.

AU - Williams, Timothy

PY - 2018/3/13

Y1 - 2018/3/13

N2 - A search for the lepton-flavour violating decays Bs0→e±μ∓ and B0→e±μ∓ is performed based on a sample of proton-proton collision data corresponding to an integrated luminosity of 3 fb−1, collected with the LHCb experiment at centre-of-mass energies of 7 and 8 TeV. The observed yields are consistent with the background-only hypothesis. Upper limits on the branching fraction of the Bs0→e±μ∓ decays are evaluated both in the hypotheses of an amplitude completely dominated by the heavy eigenstate and by the light eigenstate. The results are @/@ℬ(Bs0→e)<6.3(5.4)×10−9 and @/@ℬ(Bs0→e)<7.2(6.0)×10−9 at 95% (90%) confidence level, respectively. The upper limit on the branching fraction of the B0 → e±μ∓ decay is also evaluated, obtaining @/@ℬ(B0→e)<1.3(1.0)×10−9 at 95% (90%) confidence level. These are the strongest limits on these decays to date.

AB - A search for the lepton-flavour violating decays Bs0→e±μ∓ and B0→e±μ∓ is performed based on a sample of proton-proton collision data corresponding to an integrated luminosity of 3 fb−1, collected with the LHCb experiment at centre-of-mass energies of 7 and 8 TeV. The observed yields are consistent with the background-only hypothesis. Upper limits on the branching fraction of the Bs0→e±μ∓ decays are evaluated both in the hypotheses of an amplitude completely dominated by the heavy eigenstate and by the light eigenstate. The results are @/@ℬ(Bs0→e)<6.3(5.4)×10−9 and @/@ℬ(Bs0→e)<7.2(6.0)×10−9 at 95% (90%) confidence level, respectively. The upper limit on the branching fraction of the B0 → e±μ∓ decay is also evaluated, obtaining @/@ℬ(B0→e)<1.3(1.0)×10−9 at 95% (90%) confidence level. These are the strongest limits on these decays to date.

KW - B physics

KW - Branching fraction

KW - Flavor physics

KW - Hadron-Hadron scattering (experiments)

KW - Rare decay

UR - http://www.scopus.com/inward/record.url?scp=84992132586&partnerID=8YFLogxK

U2 - 10.1007/JHEP03(2018)078

DO - 10.1007/JHEP03(2018)078

M3 - Article

AN - SCOPUS:84992132586

VL - 2018

JO - JHEP

JF - JHEP

SN - 1126-6708

IS - 3

M1 - 78

ER -