Physics – High Energy Physics – High Energy Physics - Phenomenology
Scientific paper
1998-06-28
Prog.Part.Nucl.Phys.41:49-124,1998
Physics
High Energy Physics
High Energy Physics - Phenomenology
74 pages, including 26 figures
Scientific paper
10.1016/S0146-6410(98)00055-6
Recent measurements of the Gottfried sum rule have focused attention on the possibility of substantial flavor symmetry breaking in the proton sea. This is confirmed by pp and pD Drell-Yan processes measured at FNAL. Theoretical models used to `prove' flavor symmetry breaking rely on the assumption of charge symmetric parton distributions. Substantial charge symmetry violation [CSV] could affect current tests of flavor symmetry. In this review we examine the possibility of CSV for parton distributions. We first give definitions for structure functions without making the usual assumption of charge symmetry. Next we make estimates of CSV for both valence and sea quark distributions. We list a set of relations which must hold if charge symmetry is valid, and review current experimental limits on CSV. We propose a series of experimental tests of charge symmetry. These tests could either detect CSV, or they could provide stronger upper limits on CSV effects. We discuss CSV contributions to sum rules, and we propose sum rules which could differentiate between flavor symmetry, and charge symmetry violation in nuclear systems.
Londergan Timothy J.
Thomas Anthony W.
No associations
LandOfFree
The Validity of Charge Symmetry for Parton Distributions does not yet have a rating. At this time, there are no reviews or comments for this scientific paper.
If you have personal experience with The Validity of Charge Symmetry for Parton Distributions, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and The Validity of Charge Symmetry for Parton Distributions will most certainly appreciate the feedback.
Profile ID: LFWR-SCP-O-283395