Study of neutrino-electron scattering at LAMPF

Technical Report · Fri Jan 01 04:00:00 EST 1988

OSTI ID:5645558

Potter, M E

Using a beam stop source of ..nu../sub e/ from stopped mu/sup +/ decay located at the Clinton B. Anderson Meson Physics Facility at the Los Alamos National Laboratory, a measurement of the reaction ..nu../sub e/ + e/sup -/ yields ..nu../sub e/ + e/sup -/ was performed. In the Weinberg-Salam-Glashow model of electroweak interactions, the above reaction is mediated both by the exchange of a Z boson (neutral-current) and the exchange of a W boson (charged-current), and is thus sensitive to the interference between these two exchanges. A total of 304 +- 49 ..nu../sub x/e events are identified of which 254 +- 50 are attributed to ..nu../sub e/e elastic scattering. The observed event rate rules out the opposite sign of the interference by 4.6sigma and is consistent with the interference predicted by the WSG model. The measured cross-section is sigma(..nu../sub e/e) = (11.8 +- 2.5(stat) +- 1.2(syst)) x 10/sup -42/cm/sup 2/ x E/sub ..nu../(GeV) with a measured Weinberg angle of sin/sup 2/ theta/sub W/ = 0.31 +- 0.08(stat) +- 0.03(syst). 43 refs., 71 figs., 6 tbls.

• Research Organization: Los Alamos National Lab., NM (USA)
• DOE Contract Number: W-7405-ENG-36
• OSTI ID: 5645558
• Report Number(s): LA-11182-T; ON: TI88004699
• Country of Publication: United States
• Language: English

Related Subjects

645102* -- High Energy Physics-- Particle Interactions & Properties-Experimental-- Weak Interactions & Properties
72 PHYSICS OF ELEMENTARY PARTICLES AND FIELDS
ALGEBRAIC CURRENTS
ANGULAR DISTRIBUTION
BASIC INTERACTIONS
BOSONS
BREMSSTRAHLUNG
CALIBRATION
COSMIC NEUTRINOS
COSMIC RADIATION
CROSS SECTIONS
CURRENTS
DATA
DATA ANALYSIS
DECAY
DETECTION
DISTRIBUTION
EFFICIENCY
ELASTIC SCATTERING
ELECTROMAGNETIC RADIATION
ELEMENTARY PARTICLES
EXPERIMENTAL DATA
FERMIONS
HADRONS
INFORMATION
INTEGRAL CROSS SECTIONS
INTERACTIONS
INTERMEDIATE BOSONS
INTERMEDIATE VECTOR BOSONS
IONIZING RADIATIONS
LEPTON-BARYON INTERACTIONS
LEPTON-HADRON INTERACTIONS
LEPTON-LEPTON INTERACTIONS
LEPTON-NUCLEON INTERACTIONS
LEPTONS
MASSLESS PARTICLES
MESONS
MONTE CARLO METHOD
MUONS
NEUTRAL CURRENTS
NEUTRINO DETECTION
NEUTRINO-ELECTRON INTERACTIONS
NEUTRINO-NUCLEON INTERACTIONS
NEUTRINOS
NUMERICAL DATA
PARTICLE DECAY
PARTICLE INTERACTIONS
PIONS
PSEUDOSCALAR MESONS
RADIATION DETECTION
RADIATIONS
SCATTERING
SHIELDING
WEAK INTERACTIONS
WEINBERG ANGLE
Z NEUTRAL BOSONS