Abstract
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.
Highlights
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 cosð2φÞ 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 electron-ion collider (EIC), and inclusive dijet in pp and AA collisions at the LHC
Summary
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. Anisotropic distribution can be generated from nontrivial correlations in the transverse momentum dependent parton distribution (TMD) associated with the incoming hadrons This provides a unique probe to the novel tomography imaging of the nucleon and nucleus in dijet production. Such a correlation provides a unique access to the so-called elliptic gluon Wigner distribution of the target [20,31,32] Motivated by this observation (see, [33]), very recently, the CMS Collaboration has reported a preliminary measurement of this anisotropy in ultraperipheral collisions at the LHC [34]. Dijet in transverse plane perpendicular to the beam direction at hadron colliders Their total transverse momentum qt⃗ u⊥m1⁄4P⃗ k⃗⊥1⊥1⁄4þðk⃗ k⃗ 12⊥⊥−isk⃗ m2⊥uÞc=h2.smAanlgleurlatrhadnistthriebuintidoinvidbuetawl ejeetnmqo⊥maenndP⊥ has an anisotropy due to soft gluon radiation associated with the final state jet with a nonzero hcosð2φÞi
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