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Search for the doubly heavy Ξbc0$$ {\Xi}_{bc}^0 $$ baryon via decays to D0pK−
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13130_2020_Article_14211.pdf
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570.57 KB
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Author(s)
Aaij, R.
Abellán Beteta, C.
Ackernley, T.
Adeva, B.
Adinolfi, M.
Afsharnia, H.
Aidala, C. A
Aiola, S.
Ajaltouni, Z.
Akar, S.
Date Issued
November 19, 2020
Publisher
Springer Berlin Heidelberg
Citation
Journal of High Energy Physics. 2020 Nov 19;2020(11):95
Version
Final published version
Abstract
Abstract
A search for the doubly heavy
Ξ
bc
0
$$ {\Xi}_{bc}^0 $$
baryon using its decay to the D0pK– final state is performed using proton-proton collision data at a centre-of-mass energy of 13 TeV collected by the LHCb experiment between 2016 and 2018, corresponding to an integrated luminosity of 5.4 fb−1. No significant signal is found in the invariant mass range from 6.7 to 7.2 GeV/c2. Upper limits are set at 95% credibility level on the ratio of the
Ξ
bc
0
$$ {\Xi}_{bc}^0 $$
production cross-section times its branching fraction to D0pK− relative to that of the
Λ
b
0
→
D
0
pK
−
$$ {\Lambda}_b^0\to {D}^0{pK}^{-} $$
decay. The limits are set as a function of the
Ξ
bc
0
$$ {\Xi}_{bc}^0 $$
mass and lifetime hypotheses, in the rapidity range from 2.0 to 4.5 and in the transverse momentum region from 5 to 25 GeV/c. Upper limits range from 1.7 × 10−2 to 3.0 × 10−1 for the considered
Ξ
bc
0
$$ {\Xi}_{bc}^0 $$
mass and lifetime hypotheses.
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DOI of Published Version
https://doi.org/10.1007/JHEP11(2020)095
