In:
Journal of High Energy Physics, Springer Science and Business Media LLC, Vol. 2020, No. 11 ( 2020-11)
Abstract:
A search for the doubly heavy $$ {\Xi}_{bc}^0 $$ Ξ bc 0 baryon using its decay to the D 0 pK – 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/ c 2 . Upper limits are set at 95% credibility level on the ratio of the $$ {\Xi}_{bc}^0 $$ Ξ bc 0 production cross-section times its branching fraction to D 0 pK − relative to that of the $$ {\Lambda}_b^0\to {D}^0{pK}^{-} $$ Λ b 0 → D 0 pK − decay. The limits are set as a function of the $$ {\Xi}_{bc}^0 $$ Ξ 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 $$ {\Xi}_{bc}^0 $$ Ξ bc 0 mass and lifetime hypotheses.
Type of Medium:
Online Resource
ISSN:
1029-8479
DOI:
10.1007/JHEP11(2020)095
Language:
English
Publisher:
Springer Science and Business Media LLC
Publication Date:
2020
detail.hit.zdb_id:
2027350-2