Exclusive production of Bc mesons in e+e- colliders

  • Within the framework of the perturbative QCD approach, we calculate the time-like B_cm Bc(Bc*) form factors F(Q2) and A2(Q2). We include relativistic corrections and QCD corrections, either of which can give about 20% correction to the leading-order contribution, but there are cancellation effects between them. We calculate the cross sections of the e+e-→ Bc- Bc+(Bc*+) processes. The cross sections are enhanced at the Z pole to be σPP (Q=mZ)~1.3×10-5 pb and σPV (Q=mZ)~2.5×10-5 pb, which are still too small to be detected by proposed e+e- colliders such as the Circular Electron Positron Collider.
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Yan-Bing Wei, Run-Hui Li, Dan Luo, Cai-Dian Lü and Yue-Long Shen. Exclusive production of Bc mesons in e+e- colliders[J]. Chinese Physics C, 2018, 42(8): 083107. doi: 10.1088/1674-1137/42/8/083107
Yan-Bing Wei, Run-Hui Li, Dan Luo, Cai-Dian Lü and Yue-Long Shen. Exclusive production of Bc mesons in e+e- colliders[J]. Chinese Physics C, 2018, 42(8): 083107.  doi: 10.1088/1674-1137/42/8/083107 shu
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Received: 2018-05-11
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    Supported by Natural Science Foundation of Shandong Province, China (ZR2015AQ006), National Natural Science Foundation of China (11521505, 11621131001, 11447009, 11505098, 11765012), R. H. Li is partly supported by the plan of Young Creative Talents under the Talent of the Prairie project of the Inner Mongolia

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Exclusive production of Bc mesons in e+e- colliders

  • Institute of High Energy Physics, CAS, P. O. Box 918(4), Beijing 100049, China;
    2. School of Physics, University of Chinese Academy of Sciences, Beijing 100049, China;
    3. School of Physical Science and Technology, Inner Mongolia University, Huhhot 010021, China;
    4. College of Information Science and Engineering, Ocean University of China, Qingdao 266100, China
Fund Project:  Supported by Natural Science Foundation of Shandong Province, China (ZR2015AQ006), National Natural Science Foundation of China (11521505, 11621131001, 11447009, 11505098, 11765012), R. H. Li is partly supported by the plan of Young Creative Talents under the Talent of the Prairie project of the Inner Mongolia

Abstract: Within the framework of the perturbative QCD approach, we calculate the time-like B_cm Bc(Bc*) form factors F(Q2) and A2(Q2). We include relativistic corrections and QCD corrections, either of which can give about 20% correction to the leading-order contribution, but there are cancellation effects between them. We calculate the cross sections of the e+e-→ Bc- Bc+(Bc*+) processes. The cross sections are enhanced at the Z pole to be σPP (Q=mZ)~1.3×10-5 pb and σPV (Q=mZ)~2.5×10-5 pb, which are still too small to be detected by proposed e+e- colliders such as the Circular Electron Positron Collider.

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