Photoproduction of pi+ pi- pairs in a model with tensor-pomeron and vector-odderon exchange

Abstract

We consider the reaction (gamma p) to (pi+ pi- p) at high energies. Our description includes dipion production via the resonances rho, omega, rho-prime and f2, and via non-resonant mechanisms. The calculation is based on a model of high energy scattering with the exchanges of photon, pomeron, odderon and reggeons. The pomeron and the C=+1 reggeons are described as effective tensor exchanges, the odderon and the C=-1 reggeons as effective vector exchanges. We obtain a gauge-invariant version of the Drell-Soeding mechanism which produces the skewing of the rho-meson shape. Starting from the explicit formulae for the matrix element for dipion production we construct an event generator which comprises all contributions mentioned above and includes all interference terms. We give examples of total and differential cross sections and discuss asymmetries which are due to interference of C=+1 and C=-1 exchange contributions. These asymmetries can be used to search for odderon effects. Our model is intended to provide all necessary theoretical tools for a detailed experimental analysis of elastic dipion production for which data exist from fixed target experiments, from HERA, and are now being collected by LHC experiments.

arXiv comment49 pages

References in corpus (30)

• Big Bang Nucleosynthesis (in "The Review of Particle Properties" 2004)
• The Physics of Ultraperipheral Collisions at the LHC
• Physics of Ultra-Peripheral Nuclear Collisions
• Coherent gamma-gamma and gamma-A interactions in very peripheral collisions at relativistic ion colliders
• An AdS/QCD holographic wavefunction for the rho meson and diffractive rho meson electroproduction
• Coherent rho^0 Production in Ultra-Peripheral Heavy Ion Collisions
• Elastic and Proton-Dissociative rho0 Photoproduction at HERA
• A Model for Soft High-Energy Scattering: Tensor Pomeron and Vector Odderon
• Elastic Photoproduction of ${\rho }^0$ Mesons at HERA
• Pomeron-Odderon interference effects in electroproduction of two pions
• Hunting the QCD-Odderon in hard diffractive electroproduction of two pions
• The Odderon in Quantum Chromodynamics
• Exclusive central diffractive production of scalar and pseudoscalar mesons; tensorial vs. vectorial pomeron
• Observation of Two-source Interference in the Photoproduction Reaction $AuAu\to AuAu{\rho }^0$
• Observing the Odderon: Tensor Meson Photoproduction
• ${\rho }^0$ Photoproduction in AuAu Collisions at $\sqrt{s_{NN}}$=62.4 GeV with STAR
• Masses and couplings of vector mesons from the pion electromagnetic, weak, and πγtransition form factors
• Odderon-Pomeron Interference
• The ${\rho }^0$ and Drell-Söding contributions to central exclusive production of ${\pi }^{+}{\pi }^{-}$ pairs in proton-proton collisions at high energies
• Exclusive ${\pi }^{+}{\pi }^{-}$ Production at the LHC with Forward Proton Tagging
• Search for Odderon-Induced Contributions to Exclusive pi^0 Photoproduction at HERA
• The Pomeron In Exclusive Vector Meson Production
• Exclusive electroproduction of two pions at HERA
• Diffractive photoproduction of opposite-charge pseudoscalar meson pairs at high energies
• The Missing Odderon
• Photonuclear production of vector mesons in ultra-peripheral Pb-Pb collisions at the LHC
• Possible Odderon discovery at HERA via charge asymmetry in the diffractive pi+pi- production
• Chiral Symmetry and Diffractive Neutral Pion Photo- and Electroproduction
• The charge asymmetry from Pomeron-Odderon interference in hard diffractive pi+pi- -electroproduction
• How to measure Pomeron phase and discover odderon at HERA and RHIC

Cited by in corpus (27)

• Color dipole predictions for the exclusive vector meson photoproduction in $pp/pPb/PbPb$ collisions at Run 2 LHC energies
• Helicity in Proton-Proton Elastic Scattering and the Spin Structure of the Pomeron
• Central exclusive diffractive production of ${\pi }^{+}{\pi }^{-}$ continuum, scalar and tensor resonances in $pp$ and $p\bar{p}$ scattering within tensor pomeron approach
• Towards a complete study of central exclusive production of $K^{+}{K}^{-}$ pairs in proton-proton collisions within the tensor Pomeron approach
• The ${\rho }^0$ and Drell-Söding contributions to central exclusive production of ${\pi }^{+}{\pi }^{-}$ pairs in proton-proton collisions at high energies
• The Tensor Pomeron and Low-x Deep Inelastic Scattering
• Central exclusive diffractive production of $K^{+}{K}^{-}{K}^{+}{K}^{-}$ via the intermediate $\varphi \varphi$ state in proton-proton collisions
• ${\eta }_c$ production in photon - induced interactions at the AFTER@LHC experiment as a probe of the Odderon
• Exclusive diffractive production of ${\pi }^{+}{\pi }^{-}{\pi }^{+}{\pi }^{-}$ via the intermediate $\sigma \sigma$ and $\rho \rho$ states in proton-proton collisions within tensor pomeron approach
• Probing the gluon tomography in photoproduction of di-pions
• Central exclusive diffractive production of $p\bar{p}$ pairs in proton-proton collisions at high energies
• Resonance production in Pomeron-Pomeron collisions at the LHC
• Coulomb nuclear interference effect in dipion production in ultraperipheral heavy ion collisions
• Searching for the odderon in $pp\to pp{K}^{+}{K}^{-}$ and $pp\to pp{\mu }^{+}{\mu }^{-}$ reactions in the $\varphi (1020)$ resonance region at the LHC
• Central production of ${\rho }^0$ in $pp$ collisions with single proton diffractive dissociation at the LHC
• Extracting the pomeron-pomeron-$f_2(1270)$ coupling in the $pp\to pp{\pi }^{+}{\pi }^{-}$ reaction through angular distributions of the pions
• High-energy $\pi \pi$ scattering without and with photon radiation
• Study of central exclusive ${\pi }^{+}{\pi }^{-}$ production in proton-proton collisions at $\sqrt{s}=$ 5.02 and 13 TeV
• Soft-photon radiation in high-energy proton-proton collisions within the tensor-Pomeron approach: Bremsstrahlung
• Central exclusive diffractive production of a single photon in high-energy proton-proton collisions within the tensor-Pomeron approach
• Isolating the Odderon in central production in high energy $pA$ and $AA$ collisions
• Tensor pomeron, vector odderon and diffractive production of meson and baryon pairs in proton-proton collisions
• Measurement of exclusive pion pair production in proton-proton collisions at $\sqrt{s}=7$ TeV with the ATLAS detector
• Central exclusive production at the LHC: Remarks by the organisers on an EMMI workshop
• Possible future HERA analyses
• Impact of new results from the ultraperipheral collision on modeling the proton and neutron emission in photon-induced nuclear processes
• Searching for Odderon in Central Exclusive Processes at the LHC