Search for the baryon- and lepton-number violating decays $B^0\to p{\mu }^{-}$ and $B_s^0\to p{\mu }^{-}$

Abstract

A search for the baryon- and lepton-number violating decays $B^0\to p{\mu }^{-}$ and $B_s^0\to p{\mu }^{-}$ is performed at the LHCb experiment using data collected in proton-proton collisions at $\sqrt{s}$ = 7, 8 and 13 TeV, corresponding to integrated luminosities of 1, 2 and 6 fb${}^{-1}$, respectively. No significant signal for $B^0\to p{\mu }^{-}$ and $B_s^0\to p{\mu }^{-}$ decays is found and the upper limits on the branching fractions are determined to be $\mathcal{B}(B^0\to p{\mu }^{-})<2.6(3.1)\times 10^{-9}$ and $\mathcal{B}(B_s^0\to p{\mu }^{-})<12.1(14.0)\times 10^{-9}$, respectively, at 90$\%$ (95$\%$) confidence level. These are the first limits on these decays to date.

All figures and tables, along with machine-readable versions and any supplementary material and additional information, are available at https://cern.ch/lhcbproject/Publications/p/LHCb-PAPER-2022-022.html (LHCb public pages). arXiv admin note: text overlap with arXiv:1710.04111

References in corpus (7)

• Measurement of the $B_s^0\to {\mu }^{+}{\mu }^{-}$ decay properties and search for the $B^0\to {\mu }^{+}{\mu }^{-}$ and $B_s^0\to {\mu }^{+}{\mu }^{-}\gamma$ decays
• Study of the kinematic dependences of ${\Lambda }_b^0$ production in $pp$ collisions and a measurement of the ${\Lambda }_b^0\to {\Lambda }_c^{+}{\pi }^{-}$ branching fraction
• Measurement of the CKM angle $\gamma$ from a combination of LHCb results
• Searches for the baryon- and lepton-number violating decays $B^0\to {\Lambda }_c^{+}{\ell }^{-}$, $B^{-}\to \Lambda {\ell }^{-}$, and $B^{-}\to \bar{\Lambda }{\ell }^{-}$
• Search for baryon and lepton number violating decays $D^{+}\to \bar{\Lambda }({\bar{\Sigma }}^0)e^{+}$ and $D^{+}\to \Lambda ({\Sigma }^0)e^{+}$
• Search for baryon and lepton number violating decays $D^0\to \bar{p}{e}^{+}$ and $D^0\to p{e}^{-}$
• Search for baryon and lepton number violation decay $D^{\pm }\to n(\bar{n})e^{\pm }$

Cited by in corpus (1)

• Baryon Number Violation: From Nuclear Matrix Elements to BSM Physics