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Title: Comment on “New Limits on Intrinsic Charm in the Nucleon from Global Analysis of Parton Distributions”

Intrinsic heavy quarks in hadrons emerge from the non-perturbative structure of a hadron bound state and are a rigorous prediction of QCD. Lattice QCD calculations indicate significant intrinsic charm and strangeness probabilities. Since the light-front momentum distribution of the Fock states is maximal at equal rapidity, intrinsic heavy quarks carry significant fractions of the hadron momentum. The presence of Fock states with intrinsic strange, charm, or bottom quarks in hadrons lead to an array of novel physics phenomena. Accurate determinations of the heavy-quark distributions in the proton are needed to interpret Tevatron and LHC measurements as probed of physics beyond the Standard Model.
Authors:
 [1] ;  [2]
  1. SLAC National Accelerator Lab., Menlo Park, CA (United States)
  2. Univ. of Kentucky, Lexington, KY (United States)
Publication Date:
OSTI Identifier:
1177767
Report Number(s):
SLAC-PUB--16238
Journal ID: ISSN 0031-9007; PRLTAO; arXiv:1504.00969
DOE Contract Number:
AC02-76SF00515
Resource Type:
Journal Article
Resource Relation:
Journal Name: Physical Review Letters; Journal Volume: 116; Journal Issue: 1
Publisher:
American Physical Society (APS)
Research Org:
SLAC National Accelerator Laboratory (SLAC), Menlo Park, CA (United States)
Sponsoring Org:
USDOE Office of Science (SC), High Energy Physics (HEP) (SC-25)
Country of Publication:
United States
Language:
English
Subject:
72 PHYSICS OF ELEMENTARY PARTICLES AND FIELDS phenomenology-HEP; HEPPH