Yoshitaka Hatta, Bo-Wen Xiao, Feng Yuan, and Jian Zhou, Anisotropy in Dijet Production in Exclusive and Inclusive Processes, Phys. Rev. Lett. 126, 142001 (2021).
We investigate the effect of soft gluon radiations on the azimuthal angle correlation between the total and relative momenta of two jets in inclusive and exclusive dijet processes. We show that the final state effect induces a sizable cos(2ϕ) anisotropy due to gluon emissions near the jet cones. The phenomenological consequences of this observation are discussed for various collider experiments, including diffractive processes in ultraperipheral pA and AA collisions, inclusive and diffractive dijet production at the EIC, and inclusive dijet in pp and AA collisions at the LHC.
Figure: Dijet in transverse plane perpendicular to the beam direction at hadron colliders. Their total transverse momentum qT=k1T+k2T is much smaller than the individual jet momentum PT=(k1T−k2T)/2. Angular distribution between qT and PT has an anisotropy due to soft gluon radiation associated with the final state jet with a nonzero ⟨cos(2ϕ)⟩.
