Dead cone due to parton virtuality
arXiv:1204.3992 · doi:10.1142/S0217751X13500310
Abstract
A general expression for the dead cone of gluons radiated by virtual partons has been derived. The conventional dead cone for massive on-shell quarks and the dead cone for the massless virtual partons have been obtained by using different limits of the general expression. Radiative suppression due to the virtuality of initial parton jets in Heavy-Ion Collisions (HIC) has been discussed. It is observed that the suppression caused by the high virtuality is overwhelmingly large as compared to that on account of conventional dead-cone of heavy quarks. The dead cone due to virtuality may play a crucial role in explaining the observed similar suppression patterns of light and heavy quarks jets in heavy ion collisions at Relativistic Heavy Ion Collider (RHIC).
References in corpus (6)
- Energy Loss and Flow of Heavy Quarks in Au+Au Collisions at sqrt(s_NN) = 200 GeV
- Common Suppression Pattern of eta and pi^0 Mesons at High Transverse Momentum in Au+Au Collisions at sqrt(s_NN) = 200 GeV
- Parton energy loss in an expanding quark-gluon plasma: Radiative vs collisional
- Soft gluon emission off a heavy quark revisited
- Anomalous mass dependence of radiative quark energy loss in a finite-size quark-gluon plasma
- Energy loss for heavy quarks in relation to light partons; is radiative energy loss for heavy quarks anomalous?