Charged current neutrino and antineutrino interactions and nucleon structure functions

Thesis/Dissertation · Tue Jan 01 04:00:00 EST 1980

OSTI ID:6117371

Heagy, S M

Final results are presented for studies, carried out by the HPWFRO-E310 group at Fermi National Accelerator Laboratory, of inclusive charged current neutrino and antineutrino interactions. The data sample consists of 21578 neutrino and 7358 antineutrino events within the fiducial regions of the calorimeter targets in the energy interval 20 < E/sub nu,anti nu/ < 325 GeV corrected for acceptance, radiative and resolution effects. Event distributions in the (Bjorken) scaling variables x and y are presented and interpreted in the framework of the quark parton model (QPM). Deviation from exact scaling is demonstrated in the energy dependence of the x- and y-distributions, as well as in a decrease of < Q/sup 2/ >/E with increasing energy. R = (integral F/sub 2/(x)dx/integral 2xF/sub 1/(x)dx)-1 was determined in the energy interval 20 < E/sub nu,anti nu/ < 220 GeV. The structure functions F/sub 2/ and xF/sub 3/ for an isoscalar target are calculated and studied as functions of x at fixed energy and as functions of Q/sup 2/ at fixed x. Both F/sub 2/ and xF/sub 3/ increase at small x and decrease at large x as either the energy of Q/sup 2/ increases. The changes in the structure functions, hence the distributions in the scaling variables x and y, are attributed to charm production from strange quarks in the sea and the inherent Q/sup 2/ dependence of the structure functions as predicted by quantum chromodynamics (QCD). Tables of the structure functions are provided, in addition, momentum fraction distributions of the antiquarks are calculated by several methods and presented in various energy intervals. A comparison is made between the antiquark distributions and x anti s/sub p/(x) as derived from the antineutrino induced dimuon data from the experiment. Systematic effects are discussed throughout and detailed comparisons are made with data from other experiments.

• Research Organization: Wisconsin Univ., Madison (USA)
• OSTI ID: 6117371
• Country of Publication: United States
• Language: English

Related Subjects

645102* -- High Energy Physics-- Particle Interactions &amp; Properties-Experimental-- Weak Interactions &amp; Properties
645201 -- High Energy Physics-- Particle Interactions &amp; Properties-Theoretical-- General &amp; Scattering Theory
645203 -- High Energy Physics-- Particle Interactions &amp; Properties-Theoretical-- Weak Interactions &amp; Properties
72 PHYSICS OF ELEMENTARY PARTICLES AND FIELDS
ACCELERATORS
ANTILEPTONS
ANTIMATTER
ANTINEUTRINO-NUCLEON INTERACTIONS
ANTINEUTRINOS
ANTIPARTICLES
BARYONS
CHARGED-CURRENT INTERACTIONS
CHARM PARTICLES
COMPOSITE MODELS
CYCLIC ACCELERATORS
ELEMENTARY PARTICLES
ENERGY RANGE
FERMILAB ACCELERATOR
FERMIONS
FIELD THEORIES
FUNCTIONS
GEV RANGE
HADRONS
INTERACTIONS
LEPTON-BARYON INTERACTIONS
LEPTON-HADRON INTERACTIONS
LEPTON-NUCLEON INTERACTIONS
LEPTONS
MASSLESS PARTICLES
MATHEMATICAL MODELS
NEUTRINO-NUCLEON INTERACTIONS
NEUTRINOS
NUCLEONS
PARTICLE INTERACTIONS
PARTICLE MODELS
PARTICLE PRODUCTION
PARTON MODEL
POSTULATED PARTICLES
QUANTUM CHROMODYNAMICS
QUANTUM FIELD THEORY
QUARKS
STRUCTURE FUNCTIONS
SYNCHROTRONS