Coulomb nuclear interference effect in dipion production in ultraperipheral heavy ion collisions

Abstract

We study exclusive ${\pi }^{+}{\pi }^{-}$ pair production near ${\rho }^0$ resonance peak in ultraperipheral heavy ion collisions. Pion pair can either be produced via two photon fusion process or from the decay of ${\rho }^0$ in photon-nuclear reaction. At very low pair transverse momentum, the electromagnetic and nuclear amplitudes become comparable. We show that the Coulomb nuclear interference amplitude gives rise to sizable $\cos \varphi$ and $\cos 3\varphi$ azimuthal asymmetries, which can be used to constrain the phase of the dipole-nucleus scattering amplitude.

arXiv comment9 pages, 3 figures

References in corpus (37)

• Saturation Effects in Deep Inelastic Scattering at low $Q^2$ and its Implications on Diffraction
• Saturation in Diffractive Deep Inelastic Scattering
• An Impact Parameter Dipole Saturation Model
• Exclusive diffractive processes at HERA within the dipole picture
• Diffractive Leptoproduction of Vector Mesons in QCD
• Exclusive Vector Meson Production in Relativistic Heavy Ion Collisions
• Photon-Photon Physics in Very Peripheral Collisions of Relativistic Heavy Ions
• Interference in Exclusive Vector Meson Production in Heavy Ion Collisions
• Coherent J/psi photoproduction in ultra-peripheral PbPb collisions at sqrt(s[NN]) = 2.76 TeV with the CMS experiment
• Incoherent diffractive J/Psi-production in high energy nuclear DIS
• Impact parameter dependent S-matrix for dipole-proton scattering from diffractive meson electroproduction
• The spin dependence of high energy proton scattering
• Exclusive J/ψ production in ultraperipheral collisions at the LHC: constrains on the gluon distributions in the proton and nuclei
• Probing the linear polarization of photons in ultraperipheral heavy ion collisions
• Accessing the gluon Wigner distribution in ultraperipheral $pA$ collisions
• Initial transverse-momentum broadening of Breit-Wheeler process in relativistic heavy-ion collisions
• Lepton Pair Production Through Two Photon Process in Heavy Ion Collisions
• Coherent diffractive photoproduction of ${\rho }^0$ mesons on gold nuclei at RHIC
• Pomeron-Odderon interference effects in electroproduction of two pions
• Impact parameter dependence of the azimuthal asymmetry in lepton pair production in heavy ion collisions
• Coherent rho and J/psi photoproduction in ultraperipheral processes with electromagnetic dissociation of heavy ions at RHIC and LHC
• Acoplanarity of Lepton Pair to Probe the Electromagnetic Property of Quark Matter
• Measurement of exclusive ${\rho }^0$(770) photoproduction in ultraperipheral pPb collisions at $\sqrt{s_{\mathrm{NN}}}=$ 5.02 TeV
• Hunting the QCD-Odderon in hard diffractive electroproduction of two pions
• Observation of Two-source Interference in the Photoproduction Reaction $AuAu\to AuAu{\rho }^0$
• Observation of excess J/$\psi$ yield at very low transverse momenta in Au+Au collisions at $\sqrt{s_{\mathrm{NN}}}=$ 200 GeV and U+U collisions at $\sqrt{s_{\mathrm{NN}}}=$ 193 GeV
• Photoproduction of pi+ pi- pairs in a model with tensor-pomeron and vector-odderon exchange
• Coherent photoproduction of ${\rho }^0$ vector mesons in ultra-peripheral Pb-Pb collisions at $\sqrt{s_{\mathrm{NN}}}=5.02$ TeV
• The $\cos 2\varphi$ azimuthal asymmetry in ${\rho }^0$ meson production in ultraperipheral heavy ion collisions
• Double-slit experiment at fermi scale: coherent photoproduction in heavy-ion collisions
• Momentum Anisotropy of Leptons from Two Photon Processes in Heavy Ion Collisions
• Spin-dependent Pomeron and Odderon in elastic proton-proton scattering
• Sub-threshold $J/\psi$ and ${\rm Y}$ Production in $\gamma A$ Collisions
• ${\pi }^{+}{\pi }^{-}$ and ${\pi }^0{\pi }^0$ pair production in photon-photon and in ultraperipheral ultrarelativistic heavy ion collisions
• The coherent cross section of vector mesons in ultraperipheral PbPb collisions at the LHC
• Studying Coulomb correction at EIC and EicC
• Exclusive photoproduction of vector meson at next-to-leading order from Color Glass Condensate

Cited by in corpus (7)

• Tomography of Ultra-relativistic Nuclei with Polarized Photon-gluon Collisions
• Lepton pair photoproduction in peripheral relativistic heavy-ion collisions
• Probing the gluon tomography in photoproduction of di-pions
• Azimuthal asymmetries of muon pair production in ultraperipheral heavy ion collisions
• Measurement of the impact-parameter dependent azimuthal anisotropy in coherent ${\rho }^0$ photoproduction in Pb$-$Pb collisions at $\sqrt{s_{\mathrm{NN}}}$ = 5.02 TeV
• Nuclear deformation effects in photoproduction of $\rho$ mesons in ultraperipheral isobaric collisions
• Constraining axion-gluon coupling in monohadron processes