Exclusive diffractive production of real photons and vector mesons in a factorized Regge-pole model with nonlinear Pomeron trajectory

Fazio, S.; Fiore, R.; Jenkovszky, L. L.; Lavorini, A.

doi:10.1103/physrevd.85.054009

Cited by 18 publications

(33 citation statements)

References 34 publications

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“…The scattering occurs via the exchange of a color-neutral object, either a meson (at low photon energies) or the Pomeron (for higher photon energies). In some calculations, the meson exchange is treated as a Regge-pole exchange [2]. In dipole models, the incident qq is treated as a dipole which interacts with the target [3][4][5].…”

Section: Introductionmentioning

confidence: 99%

Exclusive vector meson production at an electron-ion collider

Lomnitz

2019

Phys. Rev. C

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Coherent exclusive vector meson electroproduction is a key physics channel at an electron-ion collider. It probes the gluon structure of nuclei over a wide range of Q 2 , and can be used to measure nuclear shadowing and to search for gluon saturation and/or the colored glass condensate. In this paper, we present calculations of the kinematic distributions for a variety of exclusive vector meson final states: the ρ, φ, J/ψ, ψ and the Υ states. The cross-sections for light and cc mesons are large, while Υ states should be produced in moderate numbers at a medium energy EIC (the proposed U.S. designs) and in large numbers at the LHeC. We investigate the acceptances for these states, as a function of detector rapidity coverage. A large-acceptance detector is needed to cover the full range photon-nucleon collision energies produced at an EIC; a forward detector is required to observe vector mesons from the most energetic photon interactions, and thereby probe gluons at the lowest possible Bjorken-x values. arXiv:1803.06420v2 [nucl-ex]

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Section: Introductionmentioning

confidence: 99%

Exclusive vector meson production at an electron-ion collider

Lomnitz

2019

Phys. Rev. C

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“…In the view of the limitations of that model as discussed in [4], below we scrutinize an alternative approach [5,6] by combining the Regge-pole model with geometrical ideas, resulting in Reggeometry = (Regge + geometry). In the nearly forward direction, where the cross sections decrease almost exponentially, dσ/dt ∼ e Bt , the slope B is related to the interaction radius, which is a function of the inverse mass (virtuality) of the particles…”

Section: Introductionmentioning

confidence: 99%

Reggeometry of Deeply Virtual Compton Scattering and Exclusive Vector Meson Production at HERA

Fazio¹,

Fiore²,

Jenkovszky³

et al. 2013

Acta Phys. Pol. B

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A Reggeometric (Regge+Geometry) model, based on the observed proportionality between the forward slope of the differential cross section and the interaction radius, the latter depending on virtuality Q 2 of the incoming virtual photon and on the mass M 2 of the produced particle, is constructed. The objective of this study is the dependence of the Reggepole amplitude on the virtuality Q 2 and masses of the external particles, which remains an open problem for the theory. The present analysis is based on the HERA data on Deeply Virtual Compton Scattering (DVCS) and exclusive diffractive Vector Meson Production (VMP). We treat each class of reactions separately, anticipating a further study that will include both a soft and a hard component of the unique Pomeron.

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“…In various phenomenological models [186,202,203] on the other hand, the Pomeron trajectory is taken to asymptote to −∞ as q 2 125) thus the forward slope of the Pomeron -not directly coupled to α(0) -is given by…”

Section: Non Abelian Gauge Theory With Higgs Symmetry Breakdown and Tmentioning

confidence: 99%

Introduction to the physics of the total cross section at LHC

Pancheri

Srivastava

2017

Eur. Phys. J. C

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This review describes the development of the physics of hadronic cross sections up to recent LHC results and cosmic ray experiments. We present here a comprehensive review -written with a historical perspective -about total cross sections from medium to the highest energies explored experimentally and studied through a variety of methods and theoretical models for over 60 years. We begin by recalling the analytic properties of the elastic amplitude and the theorems about the asymptotic behavior of the total cross section. A discussion of how proton-proton cross sections are extracted from cosmic rays at higher than accelerator energies and help the study of these asymptotic limits, is presented. This is followed by a description of the advent of particle colliders, through which high energies and unmatched experimental precisions have been attained. Thus the measured hadronic elastic and total cross sections have become crucial instruments to probe the so called soft part of QCD physics, where quarks and gluons are confined, and have led to test and refine Regge behavior and a number of diffractive models. As the c.m. energy increases, the total cross section also probes the transition into hard scattering describable with perturbative QCD, the so-called mini-jet region. Further tests are provided by cross section measurements of γ p, γ * p and γ * γ * for models based on vector meson dominance, scaling limits of virtual photons at high Q 2 and the BFKL formalism. Models interpolating from virtual to real photons are also tested.

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Exclusive diffractive production of real photons and vector mesons in a factorized Regge-pole model with nonlinear Pomeron trajectory

Cited by 18 publications

References 34 publications

Exclusive vector meson production at an electron-ion collider

Exclusive vector meson production at an electron-ion collider

Reggeometry of Deeply Virtual Compton Scattering and Exclusive Vector Meson Production at HERA

Introduction to the physics of the total cross section at LHC

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