Study of the rare decay J/ψ → e+e-ϕ
Abstract
We study the decay process of J/ψ → e+e-ϕ where the relatively clean electromagnetic (EM) transitions appear at leading order at tree level while the hadronic contributions only emerge via hadronic loop transitions. We include the low-lying scalar f0(980) and pseudoscalar η/η‧ as the dominant contributions in the evaluation of the hadronic loop contributions. It is found that the hadronic effects are negligible compared with the EM contributions. The decay width of J/ψ → e+e-ϕ is determined to be about 2.12 × 10-6 keV if there is no other leading mechanism contributing. This result will be tested by the BESIII experiment with a large J/ψ data sample.
Supported by National Natural Science Foundation of China (11375128, 11425525), Sino-German CRC 110 Symmetries and the Emergence of Structure in QCD (11261130311)- Publication:
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Chinese Physics C
- Pub Date:
- July 2016
- DOI:
- 10.1088/1674-1137/40/7/073104
- arXiv:
- arXiv:1512.04149
- Bibcode:
- 2016ChPhC..40g3104G
- Keywords:
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- High Energy Physics - Phenomenology
- E-Print:
- 8 pages, 2 figures