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Title: In depth analysis of the combined HERA data in the dipole models with and without saturation

Abstract

Here, we present an updated impact parameter dependent saturation model (IPsat) determined trough a fit to the combined HERA I and I+II reduced cross section data. The same HERA data are used to fit the linearized (IPnonsat) version of the applied dipole amplitude, which makes it possible to estimate the magnitude of the saturation effects in various experiments. We find that both parametrizations provide comparable descriptions of the considered data when an effective confinement scale dynamics is incorporated with quark masses. Moreover, it is possible to consistently determine the light and charm quark masses. The role of potentially non-perturbatively large dipoles is examined in detail, with the result that, especially in case of the structure function F 2, their contribution is numerically significant. Potential to discriminate between the two models in future e + p and e + A experiments is also illustrated.

Authors:
;
Publication Date:
Research Org.:
Brookhaven National Lab. (BNL), Upton, NY (United States)
Sponsoring Org.:
USDOE Office of Science (SC), Nuclear Physics (NP) (SC-26)
OSTI Identifier:
1462452
Alternate Identifier(s):
OSTI ID: 1471181
Report Number(s):
BNL-209043-2018-JAAM
Journal ID: ISSN 2470-0010; PRVDAQ; 036002
Grant/Contract Number:  
SC0012704
Resource Type:
Published Article
Journal Name:
Physical Review D
Additional Journal Information:
Journal Name: Physical Review D Journal Volume: 98 Journal Issue: 3; Journal ID: ISSN 2470-0010
Publisher:
American Physical Society
Country of Publication:
United States
Language:
English
Subject:
73 NUCLEAR PHYSICS AND RADIATION PHYSICS

Citation Formats

Mäntysaari, H., and Zurita, P. In depth analysis of the combined HERA data in the dipole models with and without saturation. United States: N. p., 2018. Web. doi:10.1103/PhysRevD.98.036002.
Mäntysaari, H., & Zurita, P. In depth analysis of the combined HERA data in the dipole models with and without saturation. United States. doi:10.1103/PhysRevD.98.036002.
Mäntysaari, H., and Zurita, P. Wed . "In depth analysis of the combined HERA data in the dipole models with and without saturation". United States. doi:10.1103/PhysRevD.98.036002.
@article{osti_1462452,
title = {In depth analysis of the combined HERA data in the dipole models with and without saturation},
author = {Mäntysaari, H. and Zurita, P.},
abstractNote = {Here, we present an updated impact parameter dependent saturation model (IPsat) determined trough a fit to the combined HERA I and I+II reduced cross section data. The same HERA data are used to fit the linearized (IPnonsat) version of the applied dipole amplitude, which makes it possible to estimate the magnitude of the saturation effects in various experiments. We find that both parametrizations provide comparable descriptions of the considered data when an effective confinement scale dynamics is incorporated with quark masses. Moreover, it is possible to consistently determine the light and charm quark masses. The role of potentially non-perturbatively large dipoles is examined in detail, with the result that, especially in case of the structure function F2, their contribution is numerically significant. Potential to discriminate between the two models in future e + p and e + A experiments is also illustrated.},
doi = {10.1103/PhysRevD.98.036002},
journal = {Physical Review D},
number = 3,
volume = 98,
place = {United States},
year = {2018},
month = {8}
}

Journal Article:
Free Publicly Available Full Text
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DOI: 10.1103/PhysRevD.98.036002

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