Search for $B_{(s)}^{*0}\to\mu^+\mu^-$ in $B_c^+\to\pi^+\mu^+\mu^-$ decays - INSPIRE

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Search for $B_{(s)}^{*0}\to\mu^+\mu^-$ in $B_c^+\to\pi^+\mu^+\mu^-$ decays

LHCb

Collaboration

2024

15 pages

Contribution to:

- LHCP 2024

Published: 2024

Report number:

LHCb-CONF-2024-003,
CERN-LHCb-CONF-2024-003

Experiments:

CERN-LHC-LHCb

View in:

CERN Document Server

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Abstract: (CDS)

A search for the very rare

B^{*0}\to\mu^+\mu^-

and

B_{s}^{*0}\to\mu^+\mu^-

decays is conducted by analysing the

B_c^+\to\pi^+\mu^+\mu^-

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

^{-1}

. The signal signatures correspond to simultaneous peaks in the

\mu^+\mu^-

and

\pi^+\mu^+\mu^-

invariant masses. No evidence for an excess of events over background is observed for either signal decay mode. Upper limits are set on the branching fractions relative to that for

B_c^+\to J/\psi\pi^+

decays of \begin{align*} {\cal R}_{B^{*0}(\mu^+\mu^-)\pi^+/J/\psi\pi^+} &< 3.8\times 10^{-5}\,, \text{ and }\\ {\cal R}_{B_{s}^{*0}(\mu^+\mu^-)\pi^+/J/\psi\pi^+} &< 5.0\times 10^{-5}\,, \end{align*} at

90\%

confidence level.

Note:

Preliminary results

Flavour physics
B physics
branching fraction
rare decay

References(48)

Figures(0)

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