Dynamical Symmetry Breaking in the Sea of the Nucleon
- 2 October 2000
- journal article
- research article
- Published by American Physical Society (APS) in Physical Review Letters
- Vol. 85 (14), 2892-2894
- https://doi.org/10.1103/physrevlett.85.2892
Abstract
We derive the nonanalytic chiral behavior of the flavor asymmetry d̅ -u̅ . Such behavior is a unique characteristic of Goldstone boson loops in chiral theories, including QCD, and establishes the unambiguous role played by the Goldstone boson cloud in the sea of the proton. Generalizing the results to the SU(3) sector, we show that strange chiral loops require that the s-s̅ distribution be nonzero.A. W. Thomas, W. Melnitchouk, and F. M. SteffenKeywords
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This publication has 35 references indexed in Scilit:
- Measurement of the Light Antiquark Flavor Asymmetry in the Nucleon SeaPhysical Review Letters, 1998
- Study of the isospin symmetry breaking in the light quark sea of the nucleon from the Drell-Yan processPhysics Letters B, 1994
- Chiral corrections to lattice calculations of charge radiiPhysical Review D, 1993
- Gottfried sum from the ratio/Physical Review Letters, 1991
- Effects of πNNform factor on pionic contributions tou¯(x)-d¯(x) distribution in the nucleonPhysical Review D, 1991
- FLAVOR SU(2) SYMMETRY BREAKING IN DEEP INELASTIC SCATTERINGModern Physics Letters A, 1991
- Excess of d over u in the proton sea quark distributionPhysics Letters B, 1990
- Nucleons with chiral loopsNuclear Physics B, 1988
- A limit on the pionic component of the nucleon through SU(3) flavour breaking in the seaPhysics Letters B, 1983
- Pion Radius and Isovector Nucleon Radii in the Limit of Small Pion MassPhysical Review D, 1972