Direct analysis of scaling violations in large-Q/sup 2/ deep-inelastic neutrino and muon scattering

Journal Article · Tue Feb 01 04:00:00 EST 1983 · Phys. Rev. D; (United States)

DOI:https://doi.org/10.1103/PhysRevD.27.508· OSTI ID:6237079

Devoto, A; Duke, D W; Owens, J F; Roberts, R G

We have made an extensive analysis of all large-Q/sup 2/ deep-inelastic neutrino and muon scattering data using evolution equations to fit the scaling violations directly at fixed Bjorken x. We have included all higher-order corrections in both the nonsinglet and singlet cases. We find that the nonsinglet neutrino data give ..lambda../sub M/Sapprox. =300 +- 80 MeV but with systematic uncertainties of at least 100 MeV (MS refers to the modified minimal-subtraction scheme). The singlet neutrino and muon data are equally consistent with either ..lambda../sub M/Sapprox. =200 +- 100 MeV and a soft gluon distribution or ..lambda../sub M/Sapprox. =350 +- 100 MeV and a hard gluon distribution. Values as low as ..lambda../sub M/Sapprox. =100 MeV found in previous analyses are likely to be spurious.

• Research Organization: Department of Physics, Florida State University, Tallahassee, Florida 32306
• OSTI ID: 6237079
• Journal Information: Phys. Rev. D; (United States), Journal Name: Phys. Rev. D; (United States) Vol. 27:3; ISSN PRVDA
• Country of Publication: United States
• Language: English

Related Subjects

645203* -- High Energy Physics-- Particle Interactions & Properties-Theoretical-- Weak Interactions & Properties
72 PHYSICS OF ELEMENTARY PARTICLES AND FIELDS
DEEP INELASTIC SCATTERING
ELEMENTARY PARTICLES
FIELD THEORIES
GLUONS
INELASTIC SCATTERING
INTERACTIONS
LEPTON-BARYON INTERACTIONS
LEPTON-HADRON INTERACTIONS
LEPTON-NUCLEON INTERACTIONS
MUON-NUCLEON INTERACTIONS
NEUTRINO-NUCLEON INTERACTIONS
PARTICLE INTERACTIONS
POSTULATED PARTICLES
QUANTUM CHROMODYNAMICS
QUANTUM FIELD THEORY
SCALING LAWS
SCATTERING