Properties of <i>Z<sub>c</sub></i><SUP>±</SUP>(3900) produced in <i>p</i>(<i>p</i>)over-bar collisions



Abazov, VM, Abbott, B, Acharya, BS, Adams, M, Adams, T, Agnew, JP, Alexeev, GD, Alkhazov, G, Alton, A, Askew, A
et al (show 362 more authors) (2019) Properties of <i>Z<sub>c</sub></i><SUP>±</SUP>(3900) produced in <i>p</i>(<i>p</i>)over-bar collisions. PHYSICAL REVIEW D, 100 (1). 012005-.

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Abstract

We study the production of the exotic charged charmoniumlike state Zc±(3900) in pp collisions through the sequential process ψ(4260)→Zc±(3900)π, Zc±(3900)→J/ψπ±. 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(stat)-1.4+3.3(syst) MeV and Γ=32-21+28(stat)-7+26(syst) MeV, respectively. We search for prompt production of the Zc±(3900) through the same sequential process. No significant signal is observed, and we set an upper limit of 0.70 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 fb-1 of pp collision data collected by the D0 experiment at the Fermilab Tevatron collider.

Item Type: Article
Uncontrolled Keywords: 5106 Nuclear and Plasma Physics, 5107 Particle and High Energy Physics, 51 Physical Sciences
Depositing User: Symplectic Admin
Date Deposited: 05 Dec 2019 16:19
Last Modified: 22 Jun 2024 10:49
DOI: 10.1103/PhysRevD.100.012005
Open Access URL: https://doi.org/10.1103/PhysRevD.100.012005
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URI: https://livrepository.liverpool.ac.uk/id/eprint/3065009