Properties of $Z_c^{\pm }(3900)$ produced in $p\bar{p}$ collision

Abstract

We study the production of the exotic charged charmonium-like state $Z_c^{\pm }(3900)$ in $p\bar{p}$ collisions through the sequential process $\psi (4260)\to Z_c^{\pm }(3900){\pi }^{\mp }$, $Z_c^{\pm }(3900)\to J/\psi {\pi }^{\pm }$. Using the subsample of candidates originating from semi-inclusive weak decays of $b$-flavored hadrons, we measure the invariant mass and natural width to be $M=3902.6_{-5.0}^{+5.2}{(\mathrm{stat})}_{-1.4}^{+3.3}(\mathrm{syst})$ MeV and $\Gamma =32_{-21}^{+28}{(\mathrm{stat})}_{-7}^{+26}(\mathrm{syst})$ MeV, respectively. We search for prompt production of the $Z_c^{\pm }(3900)$ through the same sequential process. No significant signal is observed, and we set an upper limit of 0.66 at the 95\% credibility level on the ratio of prompt production to the production via $b$-hadron decays. The study is 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.

10 pages, 5 figures. Accepted by Phys. Rev. D

References in corpus (6)

• Observation of a charged charmoniumlike structure in e+e- to pi+pi-J/psi at \sqrt{s}=4.26 GeV
• Study of $e^{+}{e}^{-}\to {\pi }^{+}{\pi }^{-}J/\psi$ and Observation of a Charged Charmonium-like State at Belle
• Measurement of the X(3872) production cross section via decays to J/psi pi pi in pp collisions at sqrt(s) = 7 TeV
• J/psi and psi(2S) production in pp collisions at sqrt(s) = 7 TeV
• Measurements of $\psi (2S)$ and $X(3872)\to J/\psi {\pi }^{+}{\pi }^{-}$ production in $pp$ collisions at $\sqrt{s}=8$ TeV with the ATLAS detector
• Evidence for $Z_c^{\pm }(3900)$ in semi-inclusive decays of $b$-flavored hadrons

Cited by in corpus (7)

• Electron-Ion Collider in China
• Charmonium and Charmoniumlike States at the BESIII Experiment
• Production of exotic hadrons in $pp$ and nuclear collisions
• $Z_c(4430)$ and $Z_c(4200)$ as triangle singularities
• Precise determination of the pole position of the exotic $Z_c(3900)$
• Simultaneous description of the $e^{+}{e}^{-}\to J/\psi \pi \pi (K\bar{K})$ processes
• The study of exotic state $Z_c^{\pm }(3900)$ decaying to $J/\psi {\pi }^{\pm }$ in the $pp$ collisions at $\sqrt{s}$ = 1.96, 7, and 13 TeV