SCOAP3 Repository 4 records found  Search took 0.01 seconds. 
1. Double Charmonium Productions in Electron-Positron Annihilation Using Bethe-Salpeter Approach / Negash, Hluf ; Bhatnagar, Shashank ; Bhatnagar, Shashank
We calculate the double charmonium production cross-section within the framework of 4×4 Bethe-Salpeter Equation in the electron-positron annihilation, at center of mass energy s=10.6 GeV, that proceeds through the exchange of a single virtual photon. [...]
Published in Advances in High Energy Physics 2019 (2019) 4029356 10.1155/2019/4029356 arXiv:1808.00805v2
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2. Approach to calculation of mass spectra and two-photon decays of cc¯ mesons in the framework of Bethe-Salpeter equation / Bhatnagar, Shashank ; Alemu, Lmenew
In this work we calculate the mass spectra of charmonium for 1P,,4P states of 0++ and 1++, for 1S,,5S states of 0+, and for 1S,,4D states of 1 along with the two-photon decay widths of the ground and first excited states of 0++ quarkonia for the process O++γγ in the framework of a QCD-motivated Bethe-Salpeter equation (BSE). [...]
Published in Phys. Rev. D 97 (2018) 10.1103/PhysRevD.97.034021 arXiv:1610.03234
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3. Radiative Decay Widths of Ground and Excited States of Vector Charmonium and Bottomonium / Negash, Hluf ; Bhatnagar, Shashank
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. [...]
Published in Advances in High Energy Physics 2017 (2017) 7306825 10.1155/2017/7306825 arXiv:1703.06082v1
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4. Decay rates of charmonia within a quark-antiquark confining potentialSupported by Major Research Project NO. F. 40-457/2011(SR), UGC, India / Patel, Smruti ; Vinodkumar, P. C. ; Bhatnagar, Shashank
In this work, we investigate the spectroscopy and decay rates of charmonia within the framework of the non-relativistic Schrödinger equation by employing an approximate inter quark-antiquark potential. [...]
Published in Chinese Phys. C 40 (2016) 053102 10.1088/1674-1137/40/5/053102 arXiv:1504.01103
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