Published January 16, 1992
| Version v1
Journal article
Isospin-violating quark distributions in the nucleon
Creators
- 1. Dept. of Physics, Massachusetts Inst. of Tech., Cambridge, MA (United States)
- 2. Lab. for Nuclear Science, Massachusetts Inst. of Tech., Cambridge, MA (United States)
Description
The quark distributions in the nucleon which measure isospin breaking are estimated in quark models and then evolved to experimental energies. The difference dp(x)-nn(x) is roughly (2-3)% of dp(x). Surprisingly, up(x)-dn(x) is only half as large. These distributions produce an error of 0.002 in the value of sin2 θw extracted from neutrino scattering unless they are taken into account. (orig.)
Additional details
Publishing Information
- Journal Title
- Physics Letters. Section B
- Journal Volume
- 274
- Journal Issue
- 3/4
- Series
- Phys. Lett., Sect. B.
- Journal Page Range
- 433-438
- ISSN
- 0370-2693
- CODEN
- PYLBA
INIS
- Country of Publication
- Netherlands
- Country of Input or Organization
- Netherlands
- INIS RN
- 23073081
- Subject category
- S72: PHYSICS OF ELEMENTARY PARTICLES AND FIELDS;
- Descriptors DEI
- BRANCHING RATIO; CHARGED-CURRENT INTERACTIONS; ERRORS; FLAVOR MODEL; ISOSPIN; MASS DIFFERENCE; NEUTRAL-CURRENT INTERACTIONS; NEUTRINO-NUCLEON INTERACTIONS; NUCLEONS; PARTICLE STRUCTURE; QUARK-HADRON INTERACTIONS; QUARKS; SCATTERING AMPLITUDES; SYMMETRY BREAKING; WEINBERG ANGLE
- Descriptors DEC
- AMPLITUDES; BARYONS; COMPOSITE MODELS; ELEMENTARY PARTICLES; FERMIONS; HADRONS; INTERACTIONS; LEPTON-BARYON INTERACTIONS; LEPTON-HADRON INTERACTIONS; LEPTON-NUCLEON INTERACTIONS; MATHEMATICAL MODELS; PARTICLE INTERACTIONS; PARTICLE MODELS; PARTICLE PROPERTIES; POSTULATED PARTICLES; QUARK MODEL
Optional Information
- Contract/Grant/Project number
- Contract DE-AC02-76ER03069