Photoproduction of the Bc(*) meson at the LHeC

Huan-Yu Bi, Ren-You Zhang, Hua-Yong Han, Yi Jiang, and Xing-Gang Wu
Phys. Rev. D 95, 034019 – Published 17 February 2017

Abstract

We make a detailed study of the photoproduction mechanism of the doubly heavy flavored Bc(*) meson at the purposed Large Hadron Electron Collider (LHeC) within the framework of nonrelativistic QCD. In addition to the photoproduction mechanism via the gluon-induced channel γ+gBc(*)+b+c¯, the extrinsic heavy quark mechanism via the two channels γ+cBc(*)+b and γ+b¯Bc(*)+c¯ has also been studied. Those two extrinsic channels are generally suppressed by the heavy quark distribution functions in the proton, which provide significant contributions in the low and intermediate pT region. A detailed comparison of those channels together with the theoretical uncertainties has been presented. By summing up all the mentioned photoproduction channels, we observe that about (1.040.53+0.90)×105 Bc and (4.862.30+3.72)×105 Bc* events can be generated at the LHeC in one operation year with the proton-electron collision energy S=1.30TeV and the luminosity L1033cm2s1. Here the errors are for mc=1.50±0.20 and mb=4.9±0.40GeV. Thus, in addition to the hadronic experiments, the LHeC shall provide another helpful platform for studying the Bc(*) meson properties, especially to test the extrinsic heavy quark mechanism.

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  • Received 27 December 2016

DOI:https://doi.org/10.1103/PhysRevD.95.034019

© 2017 American Physical Society

Physics Subject Headings (PhySH)

Particles & Fields

Authors & Affiliations

Huan-Yu Bi1,†, Ren-You Zhang1,*, Hua-Yong Han2,‡, Yi Jiang1,§, and Xing-Gang Wu3,∥

  • 1Department of Modern Physics, University of Science and Technology of China (USTC), Hefei, Anhui 230026, Peoeple’s Republic of China
  • 2CAS Key Laboratory of Theoretical Physics, Institute of Theoretical Physics, Chinese Academy of Sciences, Beijing 100190, People’s Republic of China
  • 3Department of Physics, Chongqing University, Chongqing 401331, People’s Republic of China

  • *Corresponding author. zhangry@ustc.edu.cn
  • bihy@mail.ustc.edu.cn
  • han@itp.ac.cn
  • §jiangyi@ustc.edu.cn
  • wuxg@cqu.edu.cn

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Vol. 95, Iss. 3 — 1 February 2017

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