Radiative Decay Widths of Ground and Excited States of Vector Charmonium and Bottomonium
We study the radiative decay widths of vector quarkonia for the process of J/ψ(nS)→ηc(nS)γ and Υ(nS)→ηb(nS)γ (for principal quantum numbers n=1,2,3) in the framework of Bethe-Salpeter equation under the covariant instantaneous ansatz using a 4×4 form of BSE. The parameters of the framework were dete...
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Wiley
2017-01-01
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| Series: | Advances in High Energy Physics |
| Online Access: | http://dx.doi.org/10.1155/2017/7306825 |
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| author | Hluf Negash Shashank Bhatnagar |
| author_facet | Hluf Negash Shashank Bhatnagar |
| author_sort | Hluf Negash |
| collection | DOAJ |
| description | We study the radiative decay widths of vector quarkonia for the process of J/ψ(nS)→ηc(nS)γ and Υ(nS)→ηb(nS)γ (for principal quantum numbers n=1,2,3) in the framework of Bethe-Salpeter equation under the covariant instantaneous ansatz using a 4×4 form of BSE. The parameters of the framework were determined by a fit to the mass spectrum of ground states of pseudoscalar and vector quarkonia, such as ηc, ηb, J/ψ, and Υ. These input parameters so fixed were found to give good agreements with data on mass spectra of ground and excited states of pseudoscalar and vector quarkonia, leptonic decay constants of pseudoscalar and vector quarkonia, two-photon decays, and two-gluon decays of pseudoscalar quarkonia in our recent paper. With these input parameters so fixed, the radiative decay widths of ground (1S) and excited (2S,3S) states of heavy vector quarkonia (J/Ψ and Υ) are calculated and found to be in reasonable agreement with data. |
| format | Article |
| id | doaj-art-52aefeed0b19436a8e71d311ab512938 |
| institution | Kabale University |
| issn | 1687-7357 1687-7365 |
| language | English |
| publishDate | 2017-01-01 |
| publisher | Wiley |
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| series | Advances in High Energy Physics |
| spelling | doaj-art-52aefeed0b19436a8e71d311ab5129382025-02-03T01:20:24ZengWileyAdvances in High Energy Physics1687-73571687-73652017-01-01201710.1155/2017/73068257306825Radiative Decay Widths of Ground and Excited States of Vector Charmonium and BottomoniumHluf Negash0Shashank Bhatnagar1Department of Physics, Samara University, P.O. Box 132, Samara, EthiopiaDepartment of Physics, University Institute of Sciences, Chandigarh University, Mohali 140413, IndiaWe study the radiative decay widths of vector quarkonia for the process of J/ψ(nS)→ηc(nS)γ and Υ(nS)→ηb(nS)γ (for principal quantum numbers n=1,2,3) in the framework of Bethe-Salpeter equation under the covariant instantaneous ansatz using a 4×4 form of BSE. The parameters of the framework were determined by a fit to the mass spectrum of ground states of pseudoscalar and vector quarkonia, such as ηc, ηb, J/ψ, and Υ. These input parameters so fixed were found to give good agreements with data on mass spectra of ground and excited states of pseudoscalar and vector quarkonia, leptonic decay constants of pseudoscalar and vector quarkonia, two-photon decays, and two-gluon decays of pseudoscalar quarkonia in our recent paper. With these input parameters so fixed, the radiative decay widths of ground (1S) and excited (2S,3S) states of heavy vector quarkonia (J/Ψ and Υ) are calculated and found to be in reasonable agreement with data.http://dx.doi.org/10.1155/2017/7306825 |
| spellingShingle | Hluf Negash Shashank Bhatnagar Radiative Decay Widths of Ground and Excited States of Vector Charmonium and Bottomonium Advances in High Energy Physics |
| title | Radiative Decay Widths of Ground and Excited States of Vector Charmonium and Bottomonium |
| title_full | Radiative Decay Widths of Ground and Excited States of Vector Charmonium and Bottomonium |
| title_fullStr | Radiative Decay Widths of Ground and Excited States of Vector Charmonium and Bottomonium |
| title_full_unstemmed | Radiative Decay Widths of Ground and Excited States of Vector Charmonium and Bottomonium |
| title_short | Radiative Decay Widths of Ground and Excited States of Vector Charmonium and Bottomonium |
| title_sort | radiative decay widths of ground and excited states of vector charmonium and bottomonium |
| url | http://dx.doi.org/10.1155/2017/7306825 |
| work_keys_str_mv | AT hlufnegash radiativedecaywidthsofgroundandexcitedstatesofvectorcharmoniumandbottomonium AT shashankbhatnagar radiativedecaywidthsofgroundandexcitedstatesofvectorcharmoniumandbottomonium |