6533b7cffe1ef96bd12585f3
RESEARCH PRODUCT
Positivity bound on the imaginary part of the right-chiral tensor coupling $g_R$ in polarized top quark decay
Stefan GrooteJ. G. Körnersubject
Quantum chromodynamicsPhysicsTop quarkParticle physics010308 nuclear & particles physicsHigh Energy Physics::LatticeHigh Energy Physics::PhenomenologyOrder (ring theory)FOS: Physical sciencesCoupling (probability)01 natural sciencesHigh Energy Physics - ExperimentHigh Energy Physics - Experiment (hep-ex)High Energy Physics - PhenomenologyDistribution (mathematics)High Energy Physics - Phenomenology (hep-ph)0103 physical sciencesPhysics::Atomic and Molecular ClustersHigh Energy Physics::ExperimentTensor010306 general physicsdescription
We derive a positivity bound on the right-chiral tensor coupling Im $g_R$ in polarized top quark decay by analyzing the angular decay distribution of the three-body polarized top quark decay $t(\uparrow)\to b+\ell^+ +\nu_\ell$ in NLO QCD. We obtain the bound $-0.0420 \le$ Im $g_R \le 0.0420$.
| year | journal | country | edition | language |
|---|---|---|---|---|
| 2017-11-17 |