• Fine-hyperfine structures of$$c\bar c$$ and$$b\bar b$$ systems in a non-relativistic Hulthen plus linear potentialsystems in a non-relativistic Hulthen plus linear potential

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      https://www.ias.ac.in/article/fulltext/pram/032/01/0001-0011

    • Keywords

       

      Quarkonium; static potential; fine-hyperfine; flavour-independent; decay width; Fermi-Breit Hamiltonian

    • Abstract

       

      The heavy mesons of the charmonium and upsilon family are described in an alternative static potential model chosen in a combination of Hulthen and linear potential. We find that the quark-confining potential in the form of an equal admixture of vector and scalar parts successfully explains the fine-hyperfine structures of$$c\bar c$$ and$$b\bar b$$ systems in a flavour-independent manner. The leptonic decay widths of the vector mesons ofψ and γ families are calculated taking into account the Poggio-Schnitzer correction. We obtain some of the bound states of the yet-to-be observed$$t\bar t$$ system for thet-quark mass ranging from 50 to 200 GeV.

    • Author Affiliations

       

      M Mishra1 S N Jena1 2 T N Tiwari1

      1. Department of Physics, Regional Engineering College, Rourkela - 769 008, India
      2. Department of Physics, Berhampur University, Bhanja Vihar, Berhampur - 760 007, India
    • Dates

       
  • Pramana – Journal of Physics | News

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      Posted on July 25, 2019

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