Top quark spin polarization in e gamma collision

Creative Commons License

Sahin B., Sahin İ.

MODERN PHYSICS LETTERS A, vol.23, no.7, pp.519-525, 2008 (SCI-Expanded) identifier identifier identifier

  • Publication Type: Article / Article
  • Volume: 23 Issue: 7
  • Publication Date: 2008
  • Doi Number: 10.1142/s021773230802433x
  • Journal Name: MODERN PHYSICS LETTERS A
  • Journal Indexes: Science Citation Index Expanded (SCI-EXPANDED), Scopus
  • Page Numbers: pp.519-525
  • Keywords: top quark, spin polarization, FERMILAB-TEVATRON, PAIR PRODUCTION, SINGLE, COLLIDERS
  • Ankara University Affiliated: Yes

Abstract

We investigate the degree of spin polarization of single top quarks in the e gamma collision via the process e(+)gamma --> t (b) over bar(v) over bar (e) with center-of-mass energies root s = 0.5, 1 and 1.5 TeV of the parental linear e(+)e(-) collider. Dominant spin fractions and spin asymmetries for the various top quark spin bases are investigated. We show that e(+)-beam direction is the favorite top quark spin decomposition axis. It is found to be comparable with the ones in pp and ep collisions.