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Title: Quantifying the nucleon’s pion cloud with transverse charge densities

Abstract

The transverse densities in a fast-moving nucleon offer a model-independent framework for analyzing the spatial structure of the pion cloud and its role in current matrix elements. We calculate the chiral large-distance component of the charge density in a dispersion representation of the form factor and discuss its partonic interpretation. It dominates over the nonchiral density only at surprisingly large distances above ~2 fm. The chiral component can be probed in precision low-Q^2 elastic eN scattering or in peripheral deep-inelastic processes that resolve its quark/gluon content.

Authors:
;
Publication Date:
Research Org.:
Thomas Jefferson National Accelerator Facility, Newport News, VA (United States)
Sponsoring Org.:
USDOE Office of Science (SC)
OSTI Identifier:
1004061
Report Number(s):
JLAB-THY-10-1169; DOE/OR/23177-1216; arXiv:1004.3535
Journal ID: ISSN 0556-2813; PRVCAN; TRN: US1100578
DOE Contract Number:  
AC05-06OR23177
Resource Type:
Journal Article
Journal Name:
Physical Review C
Additional Journal Information:
Journal Volume: 82; Journal Issue: 4; Journal ID: ISSN 0556-2813
Country of Publication:
United States
Language:
English
Subject:
72 PHYSICS OF ELEMENTARY PARTICLES AND FIELDS; ACCURACY; CHARGE DENSITY; CLOUDS; FORM FACTORS; MATRIX ELEMENTS; NUCLEONS; PIONS; SCATTERING

Citation Formats

Strikman, M., and Weiss, C. Quantifying the nucleon’s pion cloud with transverse charge densities. United States: N. p., 2010. Web. doi:10.1103/PhysRevC.82.042201.
Strikman, M., & Weiss, C. Quantifying the nucleon’s pion cloud with transverse charge densities. United States. doi:10.1103/PhysRevC.82.042201.
Strikman, M., and Weiss, C. Fri . "Quantifying the nucleon’s pion cloud with transverse charge densities". United States. doi:10.1103/PhysRevC.82.042201. https://www.osti.gov/servlets/purl/1004061.
@article{osti_1004061,
title = {Quantifying the nucleon’s pion cloud with transverse charge densities},
author = {Strikman, M. and Weiss, C.},
abstractNote = {The transverse densities in a fast-moving nucleon offer a model-independent framework for analyzing the spatial structure of the pion cloud and its role in current matrix elements. We calculate the chiral large-distance component of the charge density in a dispersion representation of the form factor and discuss its partonic interpretation. It dominates over the nonchiral density only at surprisingly large distances above ~2 fm. The chiral component can be probed in precision low-Q^2 elastic eN scattering or in peripheral deep-inelastic processes that resolve its quark/gluon content.},
doi = {10.1103/PhysRevC.82.042201},
journal = {Physical Review C},
issn = {0556-2813},
number = 4,
volume = 82,
place = {United States},
year = {2010},
month = {10}
}