Measurement of the Λ0b→Λ(1520)μ+μ− Differential Branching Fraction

LHCb collaboration

doi:10.1103/PhysRevLett.131.151801

Measurement of the Λ0b→Λ(1520)μ+μ− Differential Branching Fraction

LHCb collaboration

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

Abstract

The branching fraction of the rare decay Λ0b→Λ(1520)μ+μ− is measured for the first time, in the squared dimuon mass intervals q2, excluding the J/ψ and ψ(2S) regions. The data sample analyzed was collected by the LHCb experiment at center-of-mass energies of 7, 8, and 13 TeV, corresponding to a total integrated luminosity of 9 fb−1. The result in the highest q2 interval, q2>15.0 GeV2/c4, where theoretical predictions have the smallest model dependence, agrees with the predictions.

Original language	English
Article number	151801
Journal	Physical Review Letters
Volume	131
Issue number	15
DOIs	https://doi.org/10.1103/PhysRevLett.131.151801
Publication status	Published - 13 Oct 2023

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10.1103/PhysRevLett.131.151801Licence: CC BY

Cite this

@article{8d9fc1e14bfb4b14b4a1d5a5014bd7ef,

title = "Measurement of the Λ0b→Λ(1520)μ+μ− Differential Branching Fraction",

abstract = "The branching fraction of the rare decay Λ0b→Λ(1520)μ+μ− is measured for the first time, in the squared dimuon mass intervals q2, excluding the J/ψ and ψ(2S) regions. The data sample analyzed was collected by the LHCb experiment at center-of-mass energies of 7, 8, and 13 TeV, corresponding to a total integrated luminosity of 9 fb−1. The result in the highest q2 interval, q2>15.0 GeV2/c4, where theoretical predictions have the smallest model dependence, agrees with the predictions.",

author = "R. Aaij and Abdelmotteleb, {A. S.W.} and {Abellan Beteta}, C. and F. Abudin{\'e}n and T. Ackernley and B. Adeva and M. Adinolfi and P. Adlarson and H. Afsharnia and C. Agapopoulou and Aidala, {C. A.} and Z. Ajaltouni and S. Akar and K. Akiba and P. Albicocco and J. Albrecht and F. Alessio and M. Alexander and {Alfonso Albero}, A. and Z. Aliouche and {Alvarez Cartelle}, P. and R. Amalric and S. Amato and Amey, {J. L.} and Y. Amhis and L. An and L. Anderlini and M. Andersson and A. Andreianov and M. Andreotti and D. Andreou and D. Ao and F. Archilli and A. Artamonov and M. Artuso and E. Aslanides and M. Atzeni and B. Audurier and {Bachiller Perea}, I. and S. Bachmann and M. Bachmayer and Back, {J. J.} and A. Bailly-Reyre and {Baladron Rodriguez}, P. and V. Balagura and W. Baldini and {Baptista de Souza Leite}, J. and M. Barbetti and Barlow, {R. J.} and S. Barsuk and {LHCb collaboration} and Marcel Merk and Chris Pawley and {de Vries}, Jacco and Keri Vos and {C{\'a}mpora P{\'e}rez}, {Daniel Hugo} and {da silva Bolognani}, Carolina and {Lucio Martinez}, Miriam and Davide Nicotra and Gerco Onderwater",

year = "2023",

month = oct,

day = "13",

doi = "10.1103/PhysRevLett.131.151801",

language = "English",

volume = "131",

journal = "Physical Review Letters",

issn = "0031-9007",

publisher = "American Physical Society",

number = "15",

}

TY - JOUR

T1 - Measurement of the Λ0b→Λ(1520)μ+μ− Differential Branching Fraction

AU - Aaij, R.

AU - Abdelmotteleb, A. S.W.

AU - Abellan Beteta, C.

AU - Abudinén, F.

AU - Ackernley, T.

AU - Adeva, B.

AU - Adinolfi, M.

AU - Adlarson, P.

AU - Afsharnia, H.

AU - Agapopoulou, C.

AU - Aidala, C. A.

AU - Ajaltouni, Z.

AU - Akar, S.

AU - Akiba, K.

AU - Albicocco, P.

AU - Albrecht, J.

AU - Alessio, F.

AU - Alexander, M.

AU - Alfonso Albero, A.

AU - Aliouche, Z.

AU - Alvarez Cartelle, P.

AU - Amalric, R.

AU - Amato, S.

AU - Amey, J. L.

AU - Amhis, Y.

AU - An, L.

AU - Anderlini, L.

AU - Andersson, M.

AU - Andreianov, A.

AU - Andreotti, M.

AU - Andreou, D.

AU - Ao, D.

AU - Archilli, F.

AU - Artamonov, A.

AU - Artuso, M.

AU - Aslanides, E.

AU - Atzeni, M.

AU - Audurier, B.

AU - Bachiller Perea, I.

AU - Bachmann, S.

AU - Bachmayer, M.

AU - Back, J. J.

AU - Bailly-Reyre, A.

AU - Baladron Rodriguez, P.

AU - Balagura, V.

AU - Baldini, W.

AU - Baptista de Souza Leite, J.

AU - Barbetti, M.

AU - Barlow, R. J.

AU - Barsuk, S.

AU - LHCb collaboration

AU - Merk, Marcel

AU - Pawley, Chris

AU - de Vries, Jacco

AU - Vos, Keri

AU - Cámpora Pérez, Daniel Hugo

AU - da silva Bolognani, Carolina

AU - Lucio Martinez, Miriam

AU - Nicotra, Davide

AU - Onderwater, Gerco

PY - 2023/10/13

Y1 - 2023/10/13

N2 - The branching fraction of the rare decay Λ0b→Λ(1520)μ+μ− is measured for the first time, in the squared dimuon mass intervals q2, excluding the J/ψ and ψ(2S) regions. The data sample analyzed was collected by the LHCb experiment at center-of-mass energies of 7, 8, and 13 TeV, corresponding to a total integrated luminosity of 9 fb−1. The result in the highest q2 interval, q2>15.0 GeV2/c4, where theoretical predictions have the smallest model dependence, agrees with the predictions.

AB - The branching fraction of the rare decay Λ0b→Λ(1520)μ+μ− is measured for the first time, in the squared dimuon mass intervals q2, excluding the J/ψ and ψ(2S) regions. The data sample analyzed was collected by the LHCb experiment at center-of-mass energies of 7, 8, and 13 TeV, corresponding to a total integrated luminosity of 9 fb−1. The result in the highest q2 interval, q2>15.0 GeV2/c4, where theoretical predictions have the smallest model dependence, agrees with the predictions.

U2 - 10.1103/PhysRevLett.131.151801

DO - 10.1103/PhysRevLett.131.151801

M3 - Article

SN - 0031-9007

VL - 131

JO - Physical Review Letters

JF - Physical Review Letters

IS - 15

M1 - 151801

ER -