International Journal of
Physical Sciences

  • Abbreviation: Int. J. Phys. Sci.
  • Language: English
  • ISSN: 1992-1950
  • DOI: 10.5897/IJPS
  • Start Year: 2006
  • Published Articles: 2572

Full Length Research Paper

The effect of top quark mass on three jet rate and measurement of strong coupling constant

   Tooraj Ghaffary1*, Alireza Sepehri1, Somayyeh Shoorvarzi1 and Mohammad Mehdi Gharahbeigi2   
  1Department of Physics, Shiraz Branch, Islamic Azad University, Shiraz, Iran. 2Sama Technical and Vocational Training College, Shiraz Branch, Islamic Azad University, Shiraz, Iran.
Email: [email protected]

  •  Accepted: 20 July 2011
  •  Published: 16 November 2011

Abstract

 

We present the calculation of top quark mass corrections to three-jet rates in electron-positron annihilation at center of mass energies of 60 and 206 GeV. Furthermore, we also calculate the effects of quark-antiquark interactions on QCD model for three-jet rates. We extract the strong coupling constant, αs, through our results from the massive three-jet rate and the massless one. We observe that the effect of "t" quark on three jet rate does not contribute significantly to the calculations of strong coupling constant and we can ignore this effect in higher energies.

 

Key words: Transverse momenta, three-jet rate, top quark, strong coupling constant.

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This article is published under the terms of the Creative Commons Attribution License 4.0

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