Exclusive production of Bc mesons in e+e- colliders

Yan-Bing Wei; Run-Hui Li; Dan Luo; Cai-Dian L&uuml;; Yue-Long Shen

doi:10.1088/1674-1137/42/8/083107

Chinese Physics C> 2018, Vol. 42> Issue(8) : 083107 DOI: 10.1088/1674-1137/42/8/083107

Exclusive production of B_c mesons in e⁺e^- colliders

Yan-Bing Wei ^1,2 ,
Run-Hui Li ³ ,
Dan Luo ⁴ ,
Cai-Dian Lü ^1,2 ,
Yue-Long Shen ⁴

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

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Abstract：
Within the framework of the perturbative QCD approach, we calculate the time-like B_cm B_c(B_c^*) 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^-→ B_c^- B_c⁺(B_c^*+) processes. The cross sections are enhanced at the Z pole to be σ^PP (Q=m_Z)~1.3×10^-5 pb and σ^PV (Q=m_Z)~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.
- PQCD ,
- B physics ,
- form factor

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Yan-Bing Wei, Run-Hui Li, Dan Luo, Cai-Dian Lü and Yue-Long Shen. Exclusive production of B_c mesons in e⁺e^- colliders[J]. Chinese Physics C, 2018, 42(8): 083107. doi: 10.1088/1674-1137/42/8/083107

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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 B_c mesons in e⁺e^- colliders

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