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

Abstract

We present a study of the inclusive production of the $X(4140)$ with the decay to the $J/\psi \varphi$ final state in hadronic collisions. Based on $10.4\mathrm{f}{\mathrm{b}}^{-1}$ 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 $f_b=0.39\pm 0.07(\mathrm{stat})\pm 0.10(\mathrm{syst})$. The ratio of the non-prompt $X(4140)$ production rate to the $B_s^0$ yield in the same channel is $R=0.19\pm 0.05(\mathrm{stat})\pm 0.07(\mathrm{syst})$. The values of the mass $M=4152.5\pm 1.7(\mathrm{stat}{)}_{-5.4}^{+6.2}(\mathrm{syst})$~MeV and width $\Gamma =16.3\pm 5.6(\mathrm{stat})\pm 11.4(\mathrm{syst})$~MeV are consistent with previous measurements. 8 pages, 2 figues

arXiv commentSubmitted to PRL. * pages, 2 figures

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