A search for the doubly heavy Ξbc0 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 Ξbc0 production cross-section times its branching fraction to D0pK− relative to that of the Λb0→D0pK− decay. The limits are set as a function of the Ξbc0 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 Ξbc0 mass and lifetime hypotheses. [Figure not available: see fulltext.]

Aaij, R., Abellan Beteta, C., Ackernley, T., Adeva, B., Adinolfi, M., Afsharnia, H., et al. (2020). Search for the doubly heavy Ξbc0 baryon via decays to D 0 pK −. JOURNAL OF HIGH ENERGY PHYSICS, 2020(11) [10.1007/JHEP11(2020)095].

Search for the doubly heavy Ξbc0 baryon via decays to D 0 pK −

Borsato M.;Calvi M.;Capelli S.;Carniti P.;Fazzini D.;Garcia Pardinas J.;Gotti C.;Martinazzoli L.;Martinelli M.;Meloni S.;Petruzzo M.;Shields E.;
2020

Abstract

A search for the doubly heavy Ξbc0 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 Ξbc0 production cross-section times its branching fraction to D0pK− relative to that of the Λb0→D0pK− decay. The limits are set as a function of the Ξbc0 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 Ξbc0 mass and lifetime hypotheses. [Figure not available: see fulltext.]
Articolo in rivista - Articolo scientifico
B physics; Hadron-Hadron scattering (experiments); Heavy quark production; QCD; Spectroscopy;
English
19-nov-2020
2020
2020
11
95
open
Aaij, R., Abellan Beteta, C., Ackernley, T., Adeva, B., Adinolfi, M., Afsharnia, H., et al. (2020). Search for the doubly heavy Ξbc0 baryon via decays to D 0 pK −. JOURNAL OF HIGH ENERGY PHYSICS, 2020(11) [10.1007/JHEP11(2020)095].
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