Decay Ds+→ϕl+vl$ D_s^ + \to \varphi l^ + v_l $ in Covariant Quark Model
Wepresent the branching fractions for the leptonic and semileptonic decays Ds+→l+vl$ D_s^ + \to l^ + v_l $ for ℓ = e,µ,τ and Ds+→ϕl+vl$ D_s^ + \to \varphi l^ + v_l $ for ℓ = e,µ. We use the covariant confined quark model with built-in infrared confinement for computation of required transition...
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EDP Sciences
2019-01-01
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| Series: | EPJ Web of Conferences |
| Online Access: | https://www.epj-conferences.org/articles/epjconf/pdf/2019/07/epjconf_charm2018_06010.pdf |
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doaj-af25429ac839469cbbb7f6a613b32fad2021-08-02T05:04:33ZengEDP SciencesEPJ Web of Conferences2100-014X2019-01-012020601010.1051/epjconf/201920206010epjconf_charm2018_06010Decay Ds+→ϕl+vl$ D_s^ + \to \varphi l^ + v_l $ in Covariant Quark ModelSoni N.R.0Pandya J.N.1Applied Physics Department, Faculty of Technology and Engineering, The Maharaja Sayajirao University of BarodaApplied Physics Department, Faculty of Technology and Engineering, The Maharaja Sayajirao University of BarodaWepresent the branching fractions for the leptonic and semileptonic decays Ds+→l+vl$ D_s^ + \to l^ + v_l $ for ℓ = e,µ,τ and Ds+→ϕl+vl$ D_s^ + \to \varphi l^ + v_l $ for ℓ = e,µ. We use the covariant confined quark model with built-in infrared confinement for computation of required transition form factors in the whole physical range of momentum transfer. Our results on the leptonic decays are found to agree well with the available experimental data. We obtain the following results for the semileptonicbranching fractions of Ds+$ D_s^ + $ mesons: ℬ(Ds+→ϕe+ve$ D_s^ + \to \varphi e^ + v_e $ 2.85% and ℬ(Ds+→ϕμ+vμ$ D_s^ + \to \varphi \mu ^ + v_\mu $) = 2.70 %. The ratios of branching fractions are found to be ℬ(Ds+→ϕμ+vμ$ D_s^ + \to \varphi \mu ^ + v_\mu $/ ℬ(Ds+→ϕe+ve$ D_s^ + \to \varphi e ^ + v_e $) = 0.95 which is consistent with the recent BESIIIdata.https://www.epj-conferences.org/articles/epjconf/pdf/2019/07/epjconf_charm2018_06010.pdf |
| collection |
DOAJ |
| language |
English |
| format |
Article |
| sources |
DOAJ |
| author |
Soni N.R. Pandya J.N. |
| spellingShingle |
Soni N.R. Pandya J.N. Decay Ds+→ϕl+vl$ D_s^ + \to \varphi l^ + v_l $ in Covariant Quark Model EPJ Web of Conferences |
| author_facet |
Soni N.R. Pandya J.N. |
| author_sort |
Soni N.R. |
| title |
Decay Ds+→ϕl+vl$ D_s^ + \to \varphi l^ + v_l $ in Covariant Quark Model |
| title_short |
Decay Ds+→ϕl+vl$ D_s^ + \to \varphi l^ + v_l $ in Covariant Quark Model |
| title_full |
Decay Ds+→ϕl+vl$ D_s^ + \to \varphi l^ + v_l $ in Covariant Quark Model |
| title_fullStr |
Decay Ds+→ϕl+vl$ D_s^ + \to \varphi l^ + v_l $ in Covariant Quark Model |
| title_full_unstemmed |
Decay Ds+→ϕl+vl$ D_s^ + \to \varphi l^ + v_l $ in Covariant Quark Model |
| title_sort |
decay ds+→ϕl+vl$ d_s^ + \to \varphi l^ + v_l $ in covariant quark model |
| publisher |
EDP Sciences |
| series |
EPJ Web of Conferences |
| issn |
2100-014X |
| publishDate |
2019-01-01 |
| description |
Wepresent the branching fractions for the leptonic and semileptonic decays Ds+→l+vl$ D_s^ + \to l^ + v_l $ for ℓ = e,µ,τ and Ds+→ϕl+vl$ D_s^ + \to \varphi l^ + v_l $ for ℓ = e,µ. We use the covariant confined quark model with built-in infrared confinement for computation of required transition form factors in the whole physical range of momentum transfer. Our results on the leptonic decays are found to agree well with the available experimental data. We obtain the following results for the semileptonicbranching fractions of Ds+$ D_s^ + $ mesons: ℬ(Ds+→ϕe+ve$ D_s^ + \to \varphi e^ + v_e $ 2.85% and ℬ(Ds+→ϕμ+vμ$ D_s^ + \to \varphi \mu ^ + v_\mu $) = 2.70 %. The ratios of branching fractions are found to be ℬ(Ds+→ϕμ+vμ$ D_s^ + \to \varphi \mu ^ + v_\mu $/ ℬ(Ds+→ϕe+ve$ D_s^ + \to \varphi e ^ + v_e $) = 0.95 which is consistent with the recent BESIIIdata. |
| url |
https://www.epj-conferences.org/articles/epjconf/pdf/2019/07/epjconf_charm2018_06010.pdf |
| work_keys_str_mv |
AT soninr decaydsphlvldstovarphilvlincovariantquarkmodel AT pandyajn decaydsphlvldstovarphilvlincovariantquarkmodel |
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1721241609700376576 |