The sea of quarks and antiquarks in the nucleon
Abstract
The quark and gluon structure of the proton has been under intense experimental and theoretical investigation for five decades. Even for the distributions of the well-studied valence quarks, challenges such as the value of the down quark to up quark ratio at high fractional momenta remain. Much of the sea of quark-antiquark pairs emerges from the splitting of gluons and is well described by perturbative evolution in quantum chromodynamics. However, experiments confirm that there is a non-perturbative component to the sea that is not well understood and hitherto has been difficult to calculate with ab initio non-perturbative methods. This non-perturbative structure shows up, perhaps most directly, in the flavor dependence of the sea antiquark distributions. Even though some of the general trends can be reproduced by models, there are features of the data that do not seem to be well described. Conclusively, this article discusses the experimental situation, the status of calculations and models, and the directions where these studies will progress in the near future.
- Authors:
-
- Argonne National Lab. (ANL), Argonne, IL (United States)
- Publication Date:
- Research Org.:
- Argonne National Lab. (ANL), Argonne, IL (United States)
- Sponsoring Org.:
- USDOE Office of Science (SC), Nuclear Physics (NP)
- OSTI Identifier:
- 1501863
- Grant/Contract Number:
- AC02-06CH11357
- Resource Type:
- Accepted Manuscript
- Journal Name:
- Reports on Progress in Physics
- Additional Journal Information:
- Journal Volume: 82; Journal Issue: 4; Journal ID: ISSN 0034-4885
- Publisher:
- IOP Publishing
- Country of Publication:
- United States
- Language:
- English
- Subject:
- 72 PHYSICS OF ELEMENTARY PARTICLES AND FIELDS; nucleon structure; parton distributions; proton structure; quark sea; sea of the proton
Citation Formats
Geesaman, D. F., and Reimer, P. E. The sea of quarks and antiquarks in the nucleon. United States: N. p., 2019.
Web. doi:10.1088/1361-6633/ab05a7.
Geesaman, D. F., & Reimer, P. E. The sea of quarks and antiquarks in the nucleon. United States. https://doi.org/10.1088/1361-6633/ab05a7
Geesaman, D. F., and Reimer, P. E. Tue .
"The sea of quarks and antiquarks in the nucleon". United States. https://doi.org/10.1088/1361-6633/ab05a7. https://www.osti.gov/servlets/purl/1501863.
@article{osti_1501863,
title = {The sea of quarks and antiquarks in the nucleon},
author = {Geesaman, D. F. and Reimer, P. E.},
abstractNote = {The quark and gluon structure of the proton has been under intense experimental and theoretical investigation for five decades. Even for the distributions of the well-studied valence quarks, challenges such as the value of the down quark to up quark ratio at high fractional momenta remain. Much of the sea of quark-antiquark pairs emerges from the splitting of gluons and is well described by perturbative evolution in quantum chromodynamics. However, experiments confirm that there is a non-perturbative component to the sea that is not well understood and hitherto has been difficult to calculate with ab initio non-perturbative methods. This non-perturbative structure shows up, perhaps most directly, in the flavor dependence of the sea antiquark distributions. Even though some of the general trends can be reproduced by models, there are features of the data that do not seem to be well described. Conclusively, this article discusses the experimental situation, the status of calculations and models, and the directions where these studies will progress in the near future.},
doi = {10.1088/1361-6633/ab05a7},
journal = {Reports on Progress in Physics},
number = 4,
volume = 82,
place = {United States},
year = {Tue Mar 05 00:00:00 EST 2019},
month = {Tue Mar 05 00:00:00 EST 2019}
}
Web of Science
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- arXiv
First simultaneous extraction of spin-dependent parton distributions and fragmentation functions from a global QCD analysis
text, January 2017
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- arXiv
A complete non-perturbative renormalization prescription for quasi-PDFs
text, January 2017
- Alexandrou, Constantia; Cichy, Krzysztof; Constantinou, Martha
- arXiv
Renormalization in Large Momentum Effective Theory of Parton Physics
text, January 2017
- Ji, Xiangdong; Zhang, Jian-Hui; Zhao, Yong
- arXiv
Probing the Sea Quark Content of the Proton with One-Particle-Inclusive Processes
text, January 2017
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- arXiv
Improved Parton Distribution Functions at Physical Pion Mass
text, January 2017
- Lin, Huey-Wen; Chen, Jiunn-Wei; Ishikawa, Tomomi
- arXiv
Gauge invariance and kaon production in deep inelastic scattering at low scales
text, January 2017
- Guerrero, Juan V.; Accardi, Alberto
- arXiv
Parton distributions and lattice QCD calculations: a community white paper
text, January 2017
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- arXiv
The Flavor Asymmetry of the Light Quark Sea from Semi-inclusive Deep-inelastic Scattering
text, January 1998
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- arXiv
Chiral extrapolation of lattice moments of proton quark distributions
text, January 2001
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- arXiv
Dynamical Symmetry Breaking in the Sea of the Nucleon
text, January 2000
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- arXiv
New Generation of Parton Distributions with Uncertainties from Global QCD Analysis
text, January 2002
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- arXiv
Final-State Interactions and Single-Spin Asymmetries in Semi-Inclusive Deep Inelastic Scattering
text, January 2002
- Brodsky, Stanley J.; Hwang, Dae Sung; Schmidt, Ivan
- arXiv
The statistical parton distributions: status and prospects
text, January 2005
- Bourrely, Claude; Soffer, Jacques; Buccella, Franco
- arXiv
Connection between the Sivers function and the anomalous magnetic moment
text, January 2006
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- arXiv
Parton distributions: a new global analysis
text, January 1998
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- arXiv
Isovector unpolarized quark distribution in the nucleon in the large-N_c limit
text, January 1998
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- arXiv
Global QCD Analysis of Parton Structure of the Nucleon: CTEQ5 Parton Distributions
text, January 1999
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- arXiv
Flavor asymmetry of polarized antiquark distributions and semi-inclusive DIS
text, January 1999
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- arXiv
Flavor Asymmetry of Light Quarks in the Nucleon Sea
text, January 2001
- Garvey, Gerald T.; Peng, Jen-Chieh
- arXiv