Measurement of W-Z interference from neutrino-electron scattering

Conference · Fri Jan 01 04:00:00 EST 1993

DOI:https://doi.org/10.1063/1.45453· OSTI ID:6607507

Burman, R L; Bowles, T J; Carlini, R D; Cochran, D R.F.; Doe, P J; Frank, J S; Potter, M E; Sandberg, V D ^[1]; Krakauer, D A; Talaga, R L ^[2]; Allen, R C; Chen, H H; Hausammann, R; Lee, W P; Lu, X Q; Mahler, H J; Wang, K C ^[3]

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1. Los Alamos National Lab., NM (United States)
2. Argonne National Lab., IL (United States) Maryland Univ., College Park, MD (United States)
3. California Univ., Irvine, CA (United Stat

Neutrino-electron elastic scattering was observed at LAMPF with a 15-ton fine-grained tracking calorimeter exposed to electron-neutrinos from muon decay at rest. The measured [nu][sub e]e[sup [minus]] [yields] [nu][sub e]e[sup [minus]] elastic scattering cross section, 10.0 [plus minus] 1.5(stat) [plus minus] 0.9(syst) [times] 10[sup [minus]45] cm[sup 2] [times] (E[sub [nu]](MeV)), gives a model independent measurement of the strength of the destructive interference between the charged and neutral currents, I = [minus]1.07 [plus minus] 0.21, that agrees well with the standard model (SM) prediction I = [minus]1.08. The agreement between the measured electroweak parameters and SM expectations is used to place limits on neutrino properties, such as neutrino flavor-changing neutral currents and neutrino electromagnetic moments, and on the masses of hypothetical new bosons that would interact with leptons.

• Research Organization: Los Alamos National Lab., NM (United States)
• Sponsoring Organization: DOE; NSF; USDOE, Washington, DC (United States); National Science Foundation, Washington, DC (United States)
• DOE Contract Number: W-7405-ENG-36; AC05-76ER02504; W-31109-ENG-38
• OSTI ID: 6607507
• Report Number(s): LA-UR-93-1004; CONF-930293--1; ON: DE93010724; CNN: PHY85-01559
• Country of Publication: United States
• Language: English

Related Subjects

662310* -- Weak & Electromagnetic Interactions of Leptons-- (1992-)
72 PHYSICS OF ELEMENTARY PARTICLES AND FIELDS
ALGEBRAIC CURRENTS
BOSONS
CROSS SECTIONS
CURRENTS
ELASTIC SCATTERING
ELEMENTARY PARTICLES
INTERACTIONS
INTERMEDIATE BOSONS
INTERMEDIATE VECTOR BOSONS
LEPTON-LEPTON INTERACTIONS
MATHEMATICAL MODELS
MEASURING INSTRUMENTS
NEUTRAL CURRENTS
NEUTRINO-ELECTRON INTERACTIONS
PARTICLE INTERACTIONS
PARTICLE MODELS
RADIATION DETECTORS
SCATTERING
SHOWER COUNTERS
STANDARD MODEL
UNIFIED GAUGE MODELS
WEINBERG ANGLE