Flavor Asymmetry of the Light Quark Sea from Semi-inclusive Deep-Inelastic Scattering
- 21 December 1998
- journal article
- research article
- Published by American Physical Society (APS) in Physical Review Letters
- Vol. 81 (25) , 5519-5523
- https://doi.org/10.1103/physrevlett.81.5519
Abstract
The flavor asymmetry of the light quark sea of the nucleon is determined in the kinematic range and for the first time from semi-inclusive deep-inelastic scattering. The quantity is derived from a relationship between the yields of positive and negative pions from unpolarized hydrogen and deuterium targets. The flavor asymmetry is found to be nonzero and dependent, showing an excess of over quarks in the proton.
Keywords
All Related Versions
This publication has 14 references indexed in Scilit:
- The HERMES SpectrometerNuclear Instruments and Methods in Physics Research Section A: Accelerators, Spectrometers, Detectors and Associated Equipment, 1998
- Improved parton distributions from global analysis of recent deep inelastic scattering and inclusive jet dataPhysical Review D, 1997
- Flavor asymmetry of the nucleon seaPhysical Review C, 1997
- Dynamical parton distributions of the proton and small-x physicsThe European Physical Journal C, 1995
- Parton distributions for lowQ2Physical Review D, 1995
- Reevaluation of the Gottfried sumPhysical Review D, 1994
- Isospin distributions in the proton and the Gottfried sum rule from leptoproduction of hadronsPhysics Letters B, 1991
- Constraints on isospin breaking in the light quark sea from the Drell-Yan processPhysics Letters B, 1991
- Measurements of the u valence quark distribution function in the proton and u quark fragmentation functionsNuclear Physics B, 1989
- Sum Rule for High-Energy Electron-Proton ScatteringPhysical Review Letters, 1967