Search for the rare hadronic decay <math display="inline"><msubsup><mi>B</mi><mi>s</mi><mn>0</mn></msubsup><mo stretchy="false">→</mo><mi>p</mi><mover accent="true"><mi>p</mi><mo stretchy="false">¯</mo></mover></math> - INSPIRE

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Search for the rare hadronic decay $B_{s}^{0} \to p \bar{p}$

LHCb

Collaboration

Jun 14, 2022

12 pages

Published in:

Phys.Rev.D 108 (2023) 1, 012007

Published: Jul 1, 2023

e-Print:

2206.06673 [hep-ex]

DOI:

10.1103/PhysRevD.108.012007 (publication)

PDG:

{{\mathit B}^{0}}

\rightarrow

{{\mathit p}}{{\overline{\mathit p}}}

Report number:

LHCb-PAPER-2022-004,
CERN-EP-2022-102

Experiments:

CERN-LHC-LHCb

View in:

reference search13 citations

Citations per year

Abstract: (APS)

A search for the rare hadronic decay

B_{s}^{0} \to p \bar{p}

is performed using proton-proton collision data recorded by the LHCb experiment at a center-of-mass energy of 13 TeV, corresponding to an integrated luminosity of

6 {fb}^{- 1}

. No evidence of the decay is found and an upper limit on its branching fraction is set at

B (B_{s}^{0} \to p \bar{p}) < 4.4 (5.1) \times 10^{- 9}

at 90% (95%) confidence level; this is currently the world’s best upper limit. The decay mode

B^{0} \to p \bar{p}

is measured with very large significance, confirming the first observation by the LHCb experiment in 2017. The branching fraction is determined to be

B (B^{0} \to p \bar{p}) = (1.27 \pm 0.15 \pm 0.05 \pm 0.04) \times 10^{- 8}

, where the first uncertainty is statistical, the second is systematic and the third is due to the external branching fraction of the normalization channel

B^{0} \to K^{+} π^{-}

. The combination of the two LHCb measurements of the

B^{0} \to p \bar{p}

branching fraction yields

B (B^{0} \to p \bar{p}) = (1.27 \pm 0.13 \pm 0.05 \pm 0.03) \times 10^{- 8}

.

Note:

All figures and tables, along with any supplementary material and additional information, are available at https://cern.ch/lhcbproject/Publications/p/LHCb-PAPER-2022-004.html (LHCb public pages)

p p: scattering
p p: colliding beams
B/s0: branching ratio
branching ratio: upper limit
B0: branching ratio: measured
LHC-B
CERN LHC Coll
B/s0: hadronic decay
B/s0: rare decay
B0: hadronic decay

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