mass spectrum

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Bc Spectroscopy in the Shifted l -Expansion Technique

Journal Title, Volume, Page: 
International Journal of Modern Physics E Vol. 17, No. 4, 669{691
Year of Publication: 
2008
Authors: 
SAMEER M. IKHDAIR
Department of Physics, Near East University, Nicosia, North Cyprus, Mersin 10, Turkey
Current Affiliation: 
Department of Physics, Faculty of Science, An-Najah National University, Nablus, Palestine
RAMAZAN SEVER
Department of Physics, Middle East Technical University, 06531 Ankara, Turkey
Preferred Abstract (Original): 

In the framework of static and QCD-motivated model potentials for heavy quarkonium, we present a further comprehensive calculation of the mass spectrum of  system and its ground state spin-dependent splittings in the context of the shifted l-expansion technique. We also predict the leptonic constant fBc of the lightest pseudoscalar Bc, and  of the vector  states taking into account the one-loop and two-loop QCD corrections. Furthermore, we use the scaling relation to predict the leptonic constant of the nS-states of the  system. Our predicted results are generally in high agreement with some earlier numerical methods. The parameters of each potential are adjusted to obtain best agreement with the experimental spin-averaged data (SAD).


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Calculation of The Bc Leptonic Decay Constant Using the Shifted N-Expansion Method

Journal Title, Volume, Page: 
International Journal of Modern Physics A Vol. 21, No. 32, 6699- 6714
Year of Publication: 
2006
Authors: 
Sameer M. Ikhdair
Department of Physics, Near East University, Nicosia, North Cyprus, Mersin-10, Turkey
Current Affiliation: 
Department of Physics, Faculty of Science, An-Najah National University, Nablus, Palestine
Ramazan Sever
Department of Physics, Middle East Technical University, 06531 Ankara, Turkey
Preferred Abstract (Original): 

We give a review and present a comprehensive calculation for the leptonic constant fBc of the low-lying pseudoscalar and vector states of Bc-meson in the framework of static and QCD-motivated nonrelativistic potential models taking into account the one-loop and two-loop QCD corrections in the short distance coefficient that governs the leptonic constant of Bc quarkonium system. Further, we use the scaling relation to predict the leptonic constant of the nS-states of the  system. Our results are compared with other models to gauge the reliability of the predictions and point out differences.


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Spectroscopy of Bc Meson in a Semi-Relativistic Quark Model Using the Shifted Large-N Expansion Method

Journal Title, Volume, Page: 
International Journal of Modern Physics A Vol. 19, No. 11, 1771- 1791
Year of Publication: 
2004
Authors: 
Sameer M. Ikhdair
Department of Electrical and Electronic Engineering, Near East University, Nicosia, North Cyprus, Mersin 10, Turkey
Current Affiliation: 
Department of Physics, An-Najah National University, Nablus, Palestine
Ramazan Sever
Department of Physics, Middle East Technical University, Ankara, Turkey
Preferred Abstract (Original): 
We calculate the mass spectrum, the splitting values and some other properties in the framework of the semirelativistic equation by applying the shifted large-N expansion technique. We use seven different central potentials together with an improved QCD-motivated interquark potentials calculated to two loops in the modified minimal-subtraction scheme. The parameters of these potentials are fitted to generate the semirelativistic bound states of quarkonium system in close conformity with the experimental and the present available calculated center-of-gravity (c.o.g.) data. Calculations of the energy bound states are carried out up to third order. Our results are in excellent fit with the results of the other works.
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