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Title: Charm parton content of the nucleon

Abstract

We investigate the charm sector of the nucleon structure phenomenologically, using the most up-to-date global QCD analysis. Going beyond the common assumption of purely radiatively generated charm, we explore possible degrees of freedom in the parton parameter space associated with nonperturbative (intrinsic) charm in the nucleon. Specifically, we explore the limits that can be placed on the intrinsic charm (IC) component, using all relevant hard-scattering data, according to scenarios in which the IC has a form predicted by light-cone wave function models; or a form similar to the light sea-quark distributions. We find that the range of IC is constrained to be from zero (no IC) to a level 2-3 times larger than previous model estimates. The behaviors of typical charm distributions within this range are described, and their implications for hadron collider phenomenology are briefly discussed.

Authors:
 [1];  [1];  [2];  [3];  [1];  [2]
  1. Michigan State University, E. Lansing, Michigan (United States)
  2. (United States)
  3. (China)
Publication Date:
OSTI Identifier:
21020076
Resource Type:
Journal Article
Resource Relation:
Journal Name: Physical Review. D, Particles Fields; Journal Volume: 75; Journal Issue: 5; Other Information: DOI: 10.1103/PhysRevD.75.054029; (c) 2007 The American Physical Society; Country of input: International Atomic Energy Agency (IAEA)
Country of Publication:
United States
Language:
English
Subject:
72 PHYSICS OF ELEMENTARY PARTICLES AND FIELDS; C QUARKS; DEGREES OF FREEDOM; DISTRIBUTION; GLUONS; LIGHT CONE; NUCLEONS; PARTICLE STRUCTURE; QUANTUM CHROMODYNAMICS; QUARKS; SCATTERING; WAVE FUNCTIONS

Citation Formats

Pumplin, J., Lai, H. L., University of Washington, Seattle, Washington, Taipei Municipal University of Education, Taipei, Taiwan, Tung, W. K., and University of Washington, Seattle, Washington. Charm parton content of the nucleon. United States: N. p., 2007. Web. doi:10.1103/PHYSREVD.75.054029.
Pumplin, J., Lai, H. L., University of Washington, Seattle, Washington, Taipei Municipal University of Education, Taipei, Taiwan, Tung, W. K., & University of Washington, Seattle, Washington. Charm parton content of the nucleon. United States. doi:10.1103/PHYSREVD.75.054029.
Pumplin, J., Lai, H. L., University of Washington, Seattle, Washington, Taipei Municipal University of Education, Taipei, Taiwan, Tung, W. K., and University of Washington, Seattle, Washington. Thu . "Charm parton content of the nucleon". United States. doi:10.1103/PHYSREVD.75.054029.
@article{osti_21020076,
title = {Charm parton content of the nucleon},
author = {Pumplin, J. and Lai, H. L. and University of Washington, Seattle, Washington and Taipei Municipal University of Education, Taipei, Taiwan and Tung, W. K. and University of Washington, Seattle, Washington},
abstractNote = {We investigate the charm sector of the nucleon structure phenomenologically, using the most up-to-date global QCD analysis. Going beyond the common assumption of purely radiatively generated charm, we explore possible degrees of freedom in the parton parameter space associated with nonperturbative (intrinsic) charm in the nucleon. Specifically, we explore the limits that can be placed on the intrinsic charm (IC) component, using all relevant hard-scattering data, according to scenarios in which the IC has a form predicted by light-cone wave function models; or a form similar to the light sea-quark distributions. We find that the range of IC is constrained to be from zero (no IC) to a level 2-3 times larger than previous model estimates. The behaviors of typical charm distributions within this range are described, and their implications for hadron collider phenomenology are briefly discussed.},
doi = {10.1103/PHYSREVD.75.054029},
journal = {Physical Review. D, Particles Fields},
number = 5,
volume = 75,
place = {United States},
year = {Thu Mar 01 00:00:00 EST 2007},
month = {Thu Mar 01 00:00:00 EST 2007}
}