Observation of the semileptonic decay <i>B</i><SUP>+</SUP>→ <i>p</i>(<i>p</i>)over-barμ<SUP>+</SUP>ν<sub>μ</sub>



Aaij, R, Beteta, C Abellan, Ackernley, T, Adeva, B, Adinolfi, M, Afsharnia, H, Aidala, CA, Aiola, S, Ajaltouni, Z, Akar, S
et al (show 892 more authors) (2020) Observation of the semileptonic decay <i>B</i><SUP>+</SUP>→ <i>p</i>(<i>p</i>)over-barμ<SUP>+</SUP>ν<sub>μ</sub>. JOURNAL OF HIGH ENERGY PHYSICS, 03 (3). 146-.

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Abstract

The Cabibbo-suppressed semileptonic decay $B^{+}\to p\overline{p}\mu^{+}\nu_{\mu}$ is observed for the first time using a sample of $pp$ collisions corresponding to an integrated luminosity of 1.0, 2.0 and 1.7fb$^{-1}$ at centre-of-mass energies of 7, 8 and 13TeV, respectively. The differential branching fraction is measured as a function of the $p\overline{p}$ invariant mass using the decay mode $B^{+}\to J/\psi K^{+}$ for normalisation. The total branching fraction is measured to be \begin{align*} \mathcal{B}(B^{+}\to p\overline{p}\mu^{+}\nu_{\mu}) = (5.27 ^{+0.23}_{-0.24} \pm 0.21 \pm 0.15)\times 10^{-6}, \end{align*} where the first uncertainty is statistical, the second systematic and the third is from the uncertainty on the branching fraction of the normalisation channel.

Item Type: Article
Additional Information: All figures and tables, along with any supplementary material and additional information, are available at https://cern.ch/lhcbproject/Publications/p/LHCb-PAPER-2019-034.html (LHCb public pages)
Uncontrolled Keywords: B physics, Branching fraction, Flavor physics, Hadron-Hadron scattering (experiments)
Divisions: Faculty of Science and Engineering > School of Physical Sciences
Depositing User: Symplectic Admin
Date Deposited: 02 Sep 2021 09:09
Last Modified: 14 Mar 2024 23:11
DOI: 10.1007/JHEP03(2020)146
Related URLs:
URI: https://livrepository.liverpool.ac.uk/id/eprint/3134975