ICPAQGP-2010

5-10 December 2010

6th International Conference on Physics and Astrophysics of Quark Gluon Plasma (ICPAQGP 2010)

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Exclusive Charmonium +γ production using Coulomb plus power potential

Content:

Recently the Belle and Babar collaborations have made rapid progress in the measurement of the cross-sections for exclusive J/Ψ +ηc production from e+ e- annihilation [1, 2]. The exclusive quarkonia production processes e+ e- → H + γ at the centre of momentum (CM) energy √s =10.58 GeV are computed based on the NRQCD formalism [3]. The different parameters of the formalism are taken from our investigations for the charmonia mass spectra in the framework of the non-relativistic coulomb plus power potential model [4, 5]. Our results for the production cross sections of H = ηc (1S, 2S), calculated using the spectroscopic parameters for the potential exponent lying between 1.0≤ υ≤ 1.5 are found to be in the range 68 – 84 fb for ηc(1S) and 43 – 69 fb for ηc(2S). These values are in accordance with the predictions of other theoretical [3] as well as with the available experimental results. Refrences: [1] K. Abe et al.(Belle Collaboration), Phys. Rev. Lett. 89, 142001 (2002); Phys. Rev. D 70, 071102 (2002). [2] B. Aubert et al. (BABAR Collaboration), Phys. Rev. D 72, 031101 (2005). [3] H S Chung et al. , Phys. Rev. D 78, 074022 (2008). [4] Ajay Kumar Rai, B Patel and P C Vinodkumar, Phys. Rev. D 78, 055202 (2008). [5] B. Patel and P C Vinodkumar, J. Phys. G: Nucl. Part. Phys. 36, 035003 (2009).

Id:

Place:

Room: Main Auditorium

Starting date:

--not yet scheduled--

Duration:

00'

Primary Authors:

Dr. PATEL, Bhavin (LDRP-Institute of Technology and Research Ghandhinagar, Gujarat)

Co-Authors:

Mr. MAJETHIYA, Ajay (Kalol Institute of Technology and Research center, Kalol-382721, Gujarat)
Mr. PARMAR, Arpit (Dept. of Physics, Sardar Patel University, Vallabh Vidyanagar, Gujarat, India)
Prof. P C, Vinodkumar (Dept. of Physics, Sardar Patel University, Vallabh Vidyanagar, Gujarat, India)

Presenters:

Mr. MAJETHIYA, Ajay