Effect of top quark spin on the unparticle couplings in yy -> t(t)over-bar

Şahin İ.

EUROPEAN PHYSICAL JOURNAL C, vol.60, no.3, pp.431-439, 2009 (SCI-Expanded) identifier identifier

  • Publication Type: Article / Article
  • Volume: 60 Issue: 3
  • Publication Date: 2009
  • Doi Number: 10.1140/epjc/s10052-009-0896-3
  • Journal Name: EUROPEAN PHYSICAL JOURNAL C
  • Journal Indexes: Science Citation Index Expanded (SCI-EXPANDED), Scopus
  • Page Numbers: pp.431-439
  • Ankara University Affiliated: No

Abstract

We investigate the potential of yy collisions to probe scalar unparticle couplings via top-antitop quark pair production. We find 95% confidence level limits on the unparticle couplings with an integrated luminosity of 500 fb(-1) and an energy of root s = TeV. We investigate the effect of the top quark spin polarization on the unparticle couplings. It is shown that spin polarization of the top quark leads to a significant improvement in the sensitivity limits.