2021-10-16T05:24:02Z
https://digital.csic.es/dspace-oai/request
oai:digital.csic.es:10261/195735
2020-12-12T16:57:00Z
com_10261_61
com_10261_4
col_10261_314
00925njm 22002777a 4500
dc
García Martín, L. M.
author
Henry, L.
author
Jashal, B.
author
Martínez-Vidal, Fernando
author
Oyanguren, Arantza
author
Remón Alepuz, Clara
author
Ruiz Vidal, Joan
author
Sánchez Mayordomo, Carlos
author
LHCb Collaboration
author
2019-08
The production fractions of B̄s0 and Λb0 hadrons, normalized to the sum of B- and B̄0 fractions, are measured in 13 TeV pp collisions using data collected by the LHCb experiment, corresponding to an integrated luminosity of 1.67 fb-1. These ratios, averaged over the b hadron transverse momenta from 4 to 25 GeV and pseudorapidity from 2 to 5, are 0.122±0.006 for B̄s0, and 0.259±0.018 for Λb0, where the uncertainties arise from both statistical and systematic sources. The Λb0 ratio depends strongly on transverse momentum, while the B̄s0 ratio shows a mild dependence. Neither ratio shows variations with pseudorapidity. The measurements are made using semileptonic decays to minimize theoretical uncertainties. In addition, the ratio of D+ to D0 mesons produced in the sum of B̄0 and B- semileptonic decays is determined as 0.359±0.006±0.009, where the uncertainties are statistical and systematic.
Physical Review D 100 (3): 031102(R) (2019)
http://hdl.handle.net/10261/195735
http://dx.doi.org/10.1103/PhysRevD.100.031102
http://dx.doi.org/10.13039/501100011033
Measurement of b hadron fractions in 13 TeV pp collisions