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High Energy Physics - Experiment

arXiv:1508.07846 (hep-ex)
[Submitted on 31 Aug 2015]

Title:Inclusive production of the $X(4140)$ state in $p \overline p $ collisions at D0

Authors:D0 Collaboration
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Abstract:We present a study of the inclusive production of the $X(4140)$ with the decay to the $J/\psi \phi$ final state in hadronic collisions. Based on $10.4~\rm{fb^{-1}}$ of $p \overline 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\pm 0.07 {\rm \thinspace (stat)} \pm 0.10 {\rm \thinspace (syst)} $. The ratio of the non-prompt $X(4140)$ production rate to the $B_s^0$ yield in the same channel is $R=0.19 \pm 0.05 {\rm \thinspace (stat)} \pm 0.07 {\rm \thinspace (syst)}$. The values of the mass $M=4152.5 \pm 1.7 (\rm {stat}) ^{+6.2}_{-5.4} {\rm \thinspace (syst)}$~MeV and width $\Gamma=16.3 \pm 5.6 {\rm \thinspace (stat)} \pm 11.4 {\rm \thinspace (syst)}$~MeV are consistent with previous measurements. 8 pages, 2 figues
Comments: Submitted to PRL. * pages, 2 figures
Subjects: High Energy Physics - Experiment (hep-ex)
Report number: FERMILAB-PUB-15-373-E
Cite as: arXiv:1508.07846 [hep-ex]
  (or arXiv:1508.07846v1 [hep-ex] for this version)
  https://doi.org/10.48550/arXiv.1508.07846

Submission history

From: Daria Zieminska [view email]
[v1] Mon, 31 Aug 2015 14:27:23 UTC (57 KB)
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