Search for B(s)∗0→μ+μ− in Bc+→π+μ+μ− decays

The LHCb Collaboration; W. Barter; F. Betti; A. Bohare; E. Buchanan; P. E. L. Clarke; R. Currie; S. Eisenhardt; K. Farmer; S. Gambetta; M. Kane; Y. Liu; F. Muheim; M. Needham; F. Oliva; R.H. O'Neil; O. Ozcelik; M. Richardson-Slipper; G. Sarpis; L. Soares Lavra; C. Vrahas; M. R. J. Williams

doi:10.1140/epjc/s10052-024-13573-0

Search for B(s)∗0→μ+μ− in Bc+→π+μ+μ− decays

The LHCb Collaboration, W. Barter, F. Betti, A. Bohare, E. Buchanan, P. E. L. Clarke, R. Currie, S. Eisenhardt, K. Farmer, S. Gambetta, M. Kane, Y. Liu, F. Muheim, M. Needham, F. Oliva, R.H. O'Neil, O. Ozcelik, M. Richardson-Slipper, G. Sarpis, L. Soares LavraC. Vrahas, M. R. J. Williams

School of Physics and Astronomy

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

Abstract

A search for the very rare B∗0→μ+μ− and Bs∗0→μ+μ− decays is conducted by analysing the Bc+→π+μ+μ− process. The analysis uses proton-proton collision data collected with the LHCb detector between 2011 and 2018, corresponding to an integrated luminosity of 9 fb−1fb−1. The signal signatures correspond to simultaneous peaks in the μ+μ− and π+μ+μ− invariant masses. No evidence for an excess of events over background is observed for either signal decay mode. Upper limits at the 90%90% confidence level are set on the branching fractions relative to that for Bc+→J ⁣/ψπ+ decays, RB∗0(μ+μ−)π+/J ⁣/ψπ+<3.8×10−5 and RBs∗0(μ+μ−)π+/J ⁣/ψπ+<5.0×10−5.RB∗0(μ+μ−)π+/J/ψπ+RBs∗0(μ+μ−)π+/J/ψπ+<3.8×10−5 and <5.0×10−5.

Original language	English
Article number	20
Pages (from-to)	1-16
Number of pages	16
Journal	The European Physical Journal C
Volume	85
Issue number	1
DOIs	https://doi.org/10.1140/epjc/s10052-024-13573-0
Publication status	Published - 13 Jan 2025

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10.1140/epjc/s10052-024-13573-0Licence: Creative Commons: Attribution (CC-BY)

3 Active
4 Finished

Experimental Particle Physics at the University of Edinburgh
Leonidopoulos, C. (Principal Investigator)
Science and Technology Facilities Council
1/04/23 → 31/03/26
Project: Research
Experimental Particle Physics at the University of Edinburgh
Leonidopoulos, C. (Principal Investigator)
Science and Technology Facilities Council
1/10/22 → 31/03/26
Project: Research
Beautiful Flavours: Discovering New Physics with B-hadrons and Tau-leptons
Barter, W. (Principal Investigator)
UKRI (formerly RCUK)
1/07/22 → 30/06/27
Project: Research

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The LHCb Collaboration, Barter, W., Betti, F., Bohare, A., Buchanan, E., Clarke, P. E. L., Currie, R., Eisenhardt, S., Farmer, K., Gambetta, S., Kane, M., Liu, Y., Muheim, F., Needham, M., Oliva, F., O'Neil, R. H., Ozcelik, O., Richardson-Slipper, M., Sarpis, G., ... Williams, M. R. J. (2025). Search for B(s)∗0→μ+μ− in Bc+→π+μ+μ− decays. The European Physical Journal C, 85(1), 1-16. Article 20. https://doi.org/10.1140/epjc/s10052-024-13573-0

@article{82a05fd1138c4ebf806c02be10d0ef68,

title = "Search for B(s)∗0→μ+μ− in Bc+→π+μ+μ− decays",

abstract = "A search for the very rare B∗0→μ+μ− and Bs∗0→μ+μ− decays is conducted by analysing the Bc+→π+μ+μ− process. The analysis uses proton-proton collision data collected with the LHCb detector between 2011 and 2018, corresponding to an integrated luminosity of 9 fb−1fb−1. The signal signatures correspond to simultaneous peaks in the μ+μ− and π+μ+μ− invariant masses. No evidence for an excess of events over background is observed for either signal decay mode. Upper limits at the 90\%90\% confidence level are set on the branching fractions relative to that for Bc+→J ⁣/ψπ+ decays, RB∗0(μ+μ−)π+/J ⁣/ψπ+<3.8×10−5 and RBs∗0(μ+μ−)π+/J ⁣/ψπ+<5.0×10−5.RB∗0(μ+μ−)π+/J/ψπ+RBs∗0(μ+μ−)π+/J/ψπ+<3.8×10−5 and <5.0×10−5.",

author = "\{The LHCb Collaboration\} and W. Barter and F. Betti and A. Bohare and E. Buchanan and Clarke, \{P. E. L.\} and R. Currie and S. Eisenhardt and K. Farmer and S. Gambetta and M. Kane and Y. Liu and F. Muheim and M. Needham and F. Oliva and R.H. O'Neil and O. Ozcelik and M. Richardson-Slipper and G. Sarpis and Lavra, \{L. Soares\} and C. Vrahas and Williams, \{M. R. J.\}",

year = "2025",

month = jan,

day = "13",

doi = "10.1140/epjc/s10052-024-13573-0",

language = "English",

volume = "85",

pages = "1--16",

journal = "The European Physical Journal C",

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The LHCb Collaboration, Barter, W , Betti, F, Bohare, A, Buchanan, E , Clarke, PEL , Currie, R , Eisenhardt, S, Farmer, K, Gambetta, S , Kane, M, Liu, Y, Muheim, F , Needham, M , Oliva, F, O'Neil, RH, Ozcelik, O, Richardson-Slipper, M, Sarpis, G, Lavra, LS, Vrahas, C & Williams, MRJ 2025, 'Search for B(s)∗0→μ+μ− in Bc+→π+μ+μ− decays', The European Physical Journal C, vol. 85, no. 1, 20, pp. 1-16. https://doi.org/10.1140/epjc/s10052-024-13573-0

TY - JOUR

T1 - Search for B(s)∗0→μ+μ− in Bc+→π+μ+μ− decays

AU - The LHCb Collaboration

AU - Barter, W.

AU - Betti, F.

AU - Bohare, A.

AU - Buchanan, E.

AU - Clarke, P. E. L.

AU - Currie, R.

AU - Eisenhardt, S.

AU - Farmer, K.

AU - Gambetta, S.

AU - Kane, M.

AU - Liu, Y.

AU - Muheim, F.

AU - Needham, M.

AU - Oliva, F.

AU - O'Neil, R.H.

AU - Ozcelik, O.

AU - Richardson-Slipper, M.

AU - Sarpis, G.

AU - Lavra, L. Soares

AU - Vrahas, C.

AU - Williams, M. R. J.

PY - 2025/1/13

Y1 - 2025/1/13

N2 - A search for the very rare B∗0→μ+μ− and Bs∗0→μ+μ− decays is conducted by analysing the Bc+→π+μ+μ− process. The analysis uses proton-proton collision data collected with the LHCb detector between 2011 and 2018, corresponding to an integrated luminosity of 9 fb−1fb−1. The signal signatures correspond to simultaneous peaks in the μ+μ− and π+μ+μ− invariant masses. No evidence for an excess of events over background is observed for either signal decay mode. Upper limits at the 90%90% confidence level are set on the branching fractions relative to that for Bc+→J ⁣/ψπ+ decays, RB∗0(μ+μ−)π+/J ⁣/ψπ+<3.8×10−5 and RBs∗0(μ+μ−)π+/J ⁣/ψπ+<5.0×10−5.RB∗0(μ+μ−)π+/J/ψπ+RBs∗0(μ+μ−)π+/J/ψπ+<3.8×10−5 and <5.0×10−5.

AB - A search for the very rare B∗0→μ+μ− and Bs∗0→μ+μ− decays is conducted by analysing the Bc+→π+μ+μ− process. The analysis uses proton-proton collision data collected with the LHCb detector between 2011 and 2018, corresponding to an integrated luminosity of 9 fb−1fb−1. The signal signatures correspond to simultaneous peaks in the μ+μ− and π+μ+μ− invariant masses. No evidence for an excess of events over background is observed for either signal decay mode. Upper limits at the 90%90% confidence level are set on the branching fractions relative to that for Bc+→J ⁣/ψπ+ decays, RB∗0(μ+μ−)π+/J ⁣/ψπ+<3.8×10−5 and RBs∗0(μ+μ−)π+/J ⁣/ψπ+<5.0×10−5.RB∗0(μ+μ−)π+/J/ψπ+RBs∗0(μ+μ−)π+/J/ψπ+<3.8×10−5 and <5.0×10−5.

U2 - 10.1140/epjc/s10052-024-13573-0

DO - 10.1140/epjc/s10052-024-13573-0

M3 - Article

SN - 1434-6044

VL - 85

SP - 1

EP - 16

JO - The European Physical Journal C

JF - The European Physical Journal C

IS - 1

M1 - 20

ER -

Search for B(s)∗0→μ+μ− in Bc+→π+μ+μ− decays

Abstract

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Experimental Particle Physics at the University of Edinburgh

Experimental Particle Physics at the University of Edinburgh

Beautiful Flavours: Discovering New Physics with B-hadrons and Tau-leptons

Cite this