Pion-induced production of the Zc(3900) off a nuclear target

Yin Huang, Jun He, Xiang Liu, Hong Fei Zhang, Ju Jun Xie, and Xu Rong Chen
Phys. Rev. D 93, 034022 – Published 10 February 2016

Abstract

We investigate the possibility to study the charmoniumlike state Zc(3900) through the pion-induced production off a nuclear target. By using a high-energy pion beam, the Zc(3900) can be produced off a proton or nucleus though the Primakoff effect. The production amplitude is calculated in an effective Lagrangian approach combined with the vector dominance model. The total cross sections of the p(π,Zc(3900)) and p(π,Zc(3900)J/ψπ) reactions are calculated, and their order of magnitude is about 0.1 and 0.01 nb, respectively, with an assumption of branch ratio 10% for the Zc(3900) decay in J/ψπ channel. If the proton target is replaced by a nuclear target, the production of the Zc(3900) enhances obviously. The predicted total cross sections for the A(π,Zc(3900)) and A(π,Zc(3900)J/ψπ) reactions with A=C12 or Pb208 are on the order of magnitude of 100 and 10 nb, respectively, which is about one thousand times larger than the cross sections off a proton target. Based on these results, we suggest the experimental study of the Zc(3900) by using high-energy pion beams with a nuclear target at facilities such as COMPASS and J-PARC.

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  • Received 6 December 2015

DOI:https://doi.org/10.1103/PhysRevD.93.034022

© 2016 American Physical Society

Physics Subject Headings (PhySH)

  1. Physical Systems
Particles & Fields

Authors & Affiliations

Yin Huang1,2,3,*, Jun He1,3,4,†, Xiang Liu1,5, Hong Fei Zhang2,3, Ju Jun Xie1,3,4, and Xu Rong Chen1,3

  • 1Research Center for Hadron and CSR Physics, Lanzhou University and Institute of Modern Physics of CAS, Lanzhou 730000, China
  • 2School of Nuclear Science and Technology, Lanzhou University, Lanzhou 730000, China
  • 3Institute of modern physics, Chinese Academy of Sciences, Lanzhou 730000, China
  • 4State Key Laboratory of Theoretical Physics, Institute of Theoretical Physics, Chinese Academy of Sciences, Beijing 100190,China
  • 5School of Physical Science and Technology, Lanzhou University, Lanzhou 730000, China

  • *huangy2014@lzu.cn
  • Corresponding author. junhe@impcas.ac.cn

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Issue

Vol. 93, Iss. 3 — 1 February 2016

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