Semileptonic decays of charmed mesons to light scalar mesons
Abstract
Within the framework of covariant confined quark model, we compute the transition form factors of D and Ds mesons decaying to light scalar mesons f0(980 ) and a0(980 ). The transition form factors are then utilized to compute the semileptonic branching fractions. We study the channels, namely, D(s) +→f0(980 )ℓ+νℓand D →a 0(980 )ℓ+νℓ for ℓ=e and μ . For computation of semileptonic branching fractions, we consider the a0(980 ) meson to be the conventional quark-antiquark structure and the f0(980 ) meson as the admixture of s s ¯ and light quark-antiquark pairs. Our findings are found to support the recent BESIII data.
- Publication:
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Physical Review D
- Pub Date:
- July 2020
- DOI:
- 10.1103/PhysRevD.102.016013
- arXiv:
- arXiv:2001.10195
- Bibcode:
- 2020PhRvD.102a6013S
- Keywords:
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- High Energy Physics - Phenomenology
- E-Print:
- 18 pages, 3 figures