Inclusive production of the X(4140) state in p p collisions at D0

2015/08/31 by D0 Collaboration
Physics and Astronomy · #FOS: Physical sciences #High Energy Physics - Experiment (hep-ex) #hep-ex

paper · pdf · doi:10.48550/arxiv.1508.07846

Submitted to PRL. * pages, 2 figures

arxiv created 2015/08/31 · arxiv updated 2015/09/01

Abstract

We present a study of the inclusive production of the X(4140) with the decay to the J/ψϕ final state in hadronic collisions. Based on 10.4~\rmfb^-1 of p p collision data collected by the D0 experiment at the Fermilab Tevatron collider, we report the first evidence for the prompt production of X(4140) and find the fraction of X(4140) events originating from b hadrons to be f_b=0.39± 0.07 \rm \thinspace (stat) ± 0.10 \rm \thinspace (syst) . The ratio of the non-prompt X(4140) production rate to the B_s⁰ yield in the same channel is R=0.19 ± 0.05 \rm \thinspace (stat) ± 0.07 \rm \thinspace (syst). The values of the mass M=4152.5 ± 1.7 (\rm stat) ^+6.2_-5.4 \rm \thinspace (syst)~MeV and width Γ=16.3 ± 5.6 \rm \thinspace (stat) ± 11.4 \rm \thinspace (syst)~MeV are consistent with previous measurements. 8 pages, 2 figues

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