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Title: The gluon and charm content of the deuteron

Journal Article · · Physics Letters. B

Here, we evaluate the frame-independent gluon and charm parton-distribution functions (PDFs) of the deuteron utilizing light-front quantization and the impulse approximation. We use a nuclear wave function obtained from solving the nonrelativistic Schroedinger equation with the realistic Argonne v18 nuclear force, which we fold with the proton PDF. The predicted gluon distribution in the deuteron (per nucleon) is a few percent smaller than that of the proton in the domain xbj = $$\frac{Q^2}{2_{PN.q}}$$ ~ 0.4, whereas it is strongly enhanced for xbj larger than 0.6. We discuss the applicability of our analysis and comment on how to extend it to the kinematic limit xbj → 2. We also analyze the charm distribution of the deuteron within the same approach by considering both the perturbatively and non-perturbatively generated (intrinsic) charm contributions. In particular, we note that the intrinsic-charm content in the deuteron will be enhanced due to 6-quark "hidden-color" QCD configurations.

Research Organization:
SLAC National Accelerator Laboratory (SLAC), Menlo Park, CA (United States)
Sponsoring Organization:
USDOE Office of Science (SC), High Energy Physics (HEP); Japan Society for the Promotion of Science (JSPS); French National Research Agency (ANR)
Grant/Contract Number:
AC02-76SF00515; SLAC-PUB-17523
OSTI ID:
1458828
Alternate ID(s):
OSTI ID: 1461274
Report Number(s):
SLAC-PUB-17523; S0370269318305331; PII: S0370269318305331
Journal Information:
Physics Letters. B, Journal Name: Physics Letters. B Vol. 783 Journal Issue: C; ISSN 0370-2693
Publisher:
ElsevierCopyright Statement
Country of Publication:
Netherlands
Language:
English
Citation Metrics:
Cited by: 9 works
Citation information provided by
Web of Science

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