Momentum Anisotropy of Leptons from Two Photon Processes in Heavy Ion Collisions

Abstract

We investigate the azimuthal angular correlation between the lepton transverse momentum $P_{\perp }$ and the impact parameter $b_{\perp }$ in non-central heavy-ion collisions, where the leptons are produced through two-photon scattering. Among the Fourier harmonic coefficients, a significant $v_4$ asymmetry is found for the typical kinematics at RHIC and LHC with a mild dependence on the $P_{\perp }$, whereas $v_2$ is power suppressed by the lepton mass over $P_{\perp }$. This unique prediction, if confirmed from the experiments, shall provide crucial information on the production mechanism for the dilepton in two-photon processes.

updated to match the published version, title changed, 6 pages, 3 figures

References in corpus (8)

• The Physics of Ultraperipheral Collisions at the LHC
• Electron-Positron Pair Production in Relativistic Heavy Ion Collisions
• Experimental searches for the chiral magnetic effect in heavy-ion collisions
• Probing the linear polarization of photons in ultraperipheral heavy ion collisions
• Lepton Pair Production Through Two Photon Process in Heavy Ion Collisions
• Impact parameter dependence of the azimuthal asymmetry in lepton pair production in heavy ion collisions
• Multiple scattering production of lepton-pairs in ultraperipheral heavy-ion collisions
• Two-Photon Interactions with Nuclear Breakup in Relativistic Heavy Ion Collisions

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• Azimuthal asymmetries of muon pair production in ultraperipheral heavy ion collisions
• Exciting Ions: a Systematic Treatment of Ultraperipheral Heavy Ion Collisions with Nuclear Breakup
• Coulomb nuclear interference effect in dipion production in ultraperipheral heavy ion collisions
• Photoproduction of $e^{+}{e}^{-}$ in peripheral isobar collisions
• Probing Quantum Phenomena through Photoproduction in Relativistic Heavy-Ion Collisions
• Nuclear deformation effects in photoproduction of $\rho$ mesons in ultraperipheral isobaric collisions
• Constraining axion-gluon coupling in monohadron processes
• Lepton pair production in ultra-peripheral collisions
• Azimuthal asymmetries in lepton and heavy-quark pair production in UPCs
• Linearly Polarized Photon Fusion as a Precision Probe of the Tau Lepton Dipole Moments at Lepton Colliders