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

Abstract

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.

Authors:
 [1];  [1]
  1. Brookhaven National Lab. (BNL), Upton, NY (United States)
Publication Date:
Research Org.:
Brookhaven National Lab. (BNL), Upton, NY (United States)
Sponsoring Org.:
USDOE Office of Under Secretary for Science (S-4)
OSTI Identifier:
1341635
Alternate Identifier(s):
OSTI ID: 1312059
Report Number(s):
BNL-113344-2016-JA
Journal ID: ISSN 2470-0010; R&D Project: KB0301020; KB0301020; TRN: US1701679
Grant/Contract Number:  
SC00112704; SC0012704
Resource Type:
Accepted Manuscript
Journal Name:
Physical Review D
Additional Journal Information:
Journal Volume: 94; Journal ID: ISSN 2470-0010
Publisher:
American Physical Society (APS)
Country of Publication:
United States
Language:
English
Subject:
73 NUCLEAR PHYSICS AND RADIATION PHYSICS

Citation Formats

Mantysaari, H., and Schenke, B. Revealing proton shape fluctuations with incoherent diffraction at high energy. United States: N. p., 2016. Web. doi:10.1103/PhysRevD.94.034042.
Mantysaari, H., & Schenke, B. Revealing proton shape fluctuations with incoherent diffraction at high energy. United States. doi:10.1103/PhysRevD.94.034042.
Mantysaari, H., and Schenke, B. Tue . "Revealing proton shape fluctuations with incoherent diffraction at high energy". United States. doi:10.1103/PhysRevD.94.034042. https://www.osti.gov/servlets/purl/1341635.
@article{osti_1341635,
title = {Revealing proton shape fluctuations with incoherent diffraction at high energy},
author = {Mantysaari, H. and Schenke, B.},
abstractNote = {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.},
doi = {10.1103/PhysRevD.94.034042},
journal = {Physical Review D},
number = ,
volume = 94,
place = {United States},
year = {2016},
month = {8}
}

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Cited by: 11 works
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