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Direct fragmentation of quarkonia including Fermi motionusing light-cone wave function

  • Theoretical Physics
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An Erratum to this article was published on 06 June 2007

Abstract.

We investigate the effect of Fermi motion on the direct fragmentation of the \(J/\psi\) and \(\Upsilon\) states employing a light-cone wave function. Consistent with such a wave function we set up the kinematics of a heavy quark fragmenting into quarkonia such that the Fermi motion of the constituents splits into a longitudinal as well as a transverse direction and thus calculate the fragmentation functions for these states. In the framework of our investigation, we estimate that the fragmentation probabilities of \(J/\psi\) and \(\Upsilon\) may increase at least up to 14 percent when including this degree of freedom.

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Authors and Affiliations

  1. Department of Physics, Faculty of Science, Razi University, Kermanshah, Iran

    M. A. Gomshi Nobary & B. Javadi

  2. The Center for Theoretical Physics and Mathematics, A.E.O.I., Chamran Building, P.O. Box 11365-8486, Tehran, Iran

    M. A. Gomshi Nobary

Authors
  1. M. A. Gomshi Nobary
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  2. B. Javadi
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Corresponding author

Correspondence to M. A. Gomshi Nobary.

Additional information

Received: 11 May 2004, Revised: 23 April 2005, Published online: 31 May 2005

PACS:

13.87.Fh, 13.85.Ni, 12.38.Bx, 12.39.Hg

An erratum to this article is available at http://dx.doi.org/10.1140/epjc/s10052-006-0198-y.

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Nobary, M.A.G., Javadi, B. Direct fragmentation of quarkonia including Fermi motionusing light-cone wave function. Eur. Phys. J. C 42, 37–42 (2005). https://doi.org/10.1140/epjc/s2005-02266-1

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