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Title: Revealing proton shape fluctuations with incoherent diffraction at high energy

Journal Article · · Physical Review D
 [1];  [1]
  1. Brookhaven National Lab. (BNL), Upton, NY (United States)

The di erential cross section of exclusive di ractive vector meson production in electron proton collisions carries important information on the geometric structure of the proton. More speci cally, the coherent cross section as a function of the transferred transverse momentum is sensitive to the size of the proton, while the incoherent, or proton dissociative cross section is sensitive to uctuations of the gluon distribution in coordinate space. We show that at high energies the experimentally measured coherent and incoherent cross sections for the production of J= mesons are very well reproduced within the color glass condensate framework when strong geometric uctuations of the gluon distribution in the proton are included. For meson production we also nd reasonable agreement. We study in detail the dependence of our results on various model parameters, including the average proton shape, analyze the e ect of saturation scale and color charge uctuations and constrain the degree of geometric uctuations.

Research Organization:
Brookhaven National Laboratory (BNL), Upton, NY (United States)
Sponsoring Organization:
USDOE Office of Under Secretary for Science (S-4); USDOE
Grant/Contract Number:
SC00112704; SC0012704
OSTI ID:
1341635
Alternate ID(s):
OSTI ID: 1312059
Report Number(s):
BNL-113344-2016-JA; R&D Project: KB0301020; KB0301020; TRN: US1701679
Journal Information:
Physical Review D, Vol. 94; ISSN 2470-0010
Publisher:
American Physical Society (APS)Copyright Statement
Country of Publication:
United States
Language:
English
Citation Metrics:
Cited by: 78 works
Citation information provided by
Web of Science

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High-precision determination of the electric and magnetic form factors of the proton
  • Bernauer, Jan C.; Hosaka, Atsushi; Khemchandani, Kanchan
  • INTERNATIONAL CONFERENCE ON THE STRUCTURE OF BARYONS (BARYONS' 10), AIP Conference Proceedings https://doi.org/10.1063/1.3647361
conference January 2011
Elastic J/ψ production at HERA text January 2006
Elastic and proton-dissociative photoproduction of J/ψ mesons at HERA text January 2013
Electron scattering and nuclear structure journal June 1989
Elastic J/ψ production at HERA conference January 1997
Observation of long-range, near-side angular correlations in proton-proton collisions at the LHC text January 2010
Diffractive photoproduction of J/ψ mesons with large momentum transfer at HERA text January 2003
Diffractive electroproduction of ρ and ϕ mesons at HERA text January 2010
Combination of measurements of inclusive deep inelastic e±p scattering cross sections and QCD analysis of HERA data text January 2015
Combined measurement and QCD analysis of the inclusive e±p scattering cross sections at HERA text January 2010
Nuclear enhancement and suppression of diffractive structure functions at high energies text January 2008
On multiple scatterings of mesons in hot and cold QCD matter text January 2008
Diffractive Electroproduction of rho and phi Mesons at HERA text January 2009
Combined Measurement and QCD Analysis of the Inclusive ep Scattering Cross Sections at HERA text January 2009
The Color Glass Condensate text January 2010
Azimuthal correlations of forward di-hadrons in d+Au collisions at RHIC in the Color Glass Condensate text January 2010
High-precision determination of the electric and magnetic form factors of the proton text January 2010
Observation of Long-Range Near-Side Angular Correlations in Proton-Proton Collisions at the LHC text January 2010
The RMS Charge Radius of the Proton and Zemach Moments text January 2010
Saturation models of HERA DIS data and inclusive hadron distributions in p+p collisions at the LHC text January 2010
Back-to-Back Correlations of Di-hadrons in dAu Collisions at RHIC text January 2011
Fluctuating Glasma initial conditions and flow in heavy ion collisions text January 2012
Exclusive final states in diffractive excitation text January 2012
Exclusive diffractive processes in electron-ion collisions text January 2012
Long-range angular correlations on the near and away side in p-Pb collisions at $\sqrt{s_{\rm NN}}$ = 5.02 TeV text January 2012
Analysis of combined HERA data in the Impact-Parameter dependent Saturation model text January 2012
Hydrodynamic Modeling of Heavy-Ion Collisions text January 2013
Elastic and Proton-Dissociative Photoproduction of J/psi Mesons at HERA preprint January 2013
Charmonium and $e^+e^-$ pair photoproduction at mid-rapidity in ultra-peripheral Pb-Pb collisions at $\sqrt{s_{\rm NN}}$=2.76 TeV text January 2013
Ballistic protons in incoherent exclusive vector meson production as a measure of rare parton fluctuations at an Electron-Ion Collider text January 2014
Novel Collective Phenomena in High-Energy Proton-Proton and Proton-Nucleus Collisions text January 2015
Measurement of proton-dissociative diffractive photoproduction of vector mesons at large momentum transfer at HERA text January 2002
Diffractive Photoproduction of J/psi Mesons with Large Momentum Transfer at HERA text January 2003
Measurement of diffractive photoproduction of vector mesons at large momentum transfer at HERA text January 1999
Gluon flux-tube distribution and linear confinement in baryons text January 2006
Unintegrated parton distributions text January 2001
Saturation and Universality in QCD at small x text January 2001
Eikonal Evolution and Gluon Radiation text January 2001
An Impact Parameter Dipole Saturation Model text January 2003
Parton intrinsic motion in inclusive particle production: unpolarized cross sections, single spin asymmetries and the Sivers effect text January 2004
The QCD Pomeron in Ultraperipheral Heavy Ion Collisions: IV. Photonuclear Production of Vector Mesons text January 2005
General partonic structure for hadronic spin asymmetries text January 2005
Factorization for hard exclusive electroproduction of mesons in QCD text January 1996
The BFKL Equation from the Wilson Renormalization Group text January 1997
Nonforward Parton Distributions text January 1997
The Wilson renormalization group for low x physics: towards the high density regime text January 1997
Off-diagonal distributions fixed by diagonal partons at small $x$ and $ξ$ text January 1999
Diffractive Structure Function in a Quasi-Classical Approximation text January 1999
Zemach Moments for Hydrogen and Deuterium text January 2003

Cited By (6)

Collective flow and hydrodynamics in large and small systems at the LHC journal June 2017
Diffusion of charm and beauty in the Glasma journal January 2018
Event-by-event mean ${p}_{{\rm{T}}}$ fluctuations and transverse size of color flux tube generated in pp collisions at $\sqrt{s}$ = 0.90 TeV journal December 2017
The electron–ion collider: assessing the energy dependence of key measurements journal January 2019
Collectivity and electromagnetic radiation in small systems text January 2016
Elliptic flow from color-dipole orientation in pp and pA collisions text January 2017

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