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

Şahin İ.

EUROPEAN PHYSICAL JOURNAL C, cilt.60, sa.3, ss.431-439, 2009 (SCI-Expanded) identifier identifier

  • Yayın Türü: Makale / Tam Makale
  • Cilt numarası: 60 Sayı: 3
  • Basım Tarihi: 2009
  • Doi Numarası: 10.1140/epjc/s10052-009-0896-3
  • Dergi Adı: EUROPEAN PHYSICAL JOURNAL C
  • Derginin Tarandığı İndeksler: Science Citation Index Expanded (SCI-EXPANDED), Scopus
  • Sayfa Sayıları: ss.431-439
  • Ankara Üniversitesi Adresli: Hayır

Özet

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.