6533b822fe1ef96bd127d5eb

RESEARCH PRODUCT

Longitudinal contribution to the alignment polarization of quarks produced in e + e - -annihilation: an O (α s ) effect

J. G. KörnerMichael M. TungStefan Groote

subject

QuarkQuantum chromodynamicsPhysicsTop quarkParticle physicsAnnihilationPhysics and Astronomy (miscellaneous)High Energy Physics::LatticeElectron–positron annihilationHigh Energy Physics::PhenomenologyPolarization (waves)Massless particleNuclear physicsBorn approximation

description

We calculate the longitudinal contribution to the alignment polarization Pl of quarks produced in e+e− annihilation. In the Standard Model, the longitudinal alignment polarization vanishes at the Born term level and thus receives its first non-zero contribution from the O(αs) tree graph process. We provide analytical and numerical results for the longitudinal alignment polarization of massless and massive quarks, in particular for the recently discovered top quark.

yearjournalcountryeditionlanguage
1996-03-27Zeitschrift f�r Physik C Particles and Fields
https://doi.org/10.1007/s002880050105