Measurement of W-Z interference from neutrino-electron scattering

Conference · Wed Jun 01 04:00:00 EDT 1994 · AIP Conference Proceedings (American Institute of Physics); (United States)

OSTI ID:7025690

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; Mahler, H J; Wang, K C ^[3]; Piasetzky, E ^[4]

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1. Los Alamos National Laboratory, Los Alamos, New Mexico 87545 (United States)
2. Argonne National Laboratory, Argonne, Illinois 60439 (United States) University of Maryland, College Park, Maryland 20742 (United States)
3. University of California, Irvine, California 92717 (United States)
4. Raymond and Beverly Sackler Faculty of Exact Sciences School of Physics and Astronomy, Tel Aviv University, Ramat Aviv, 69978 Tel Aviv (Israel)

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 [ital ee]][sup [minus]][r arrow][nu][sub [ital ee]][sup [minus]] elastic scattering cross section, 10.0[plus minus]1.5(stat)[plus minus]0.09(syst)[times]10[sup [minus]45] cm[sup [minus]2][times]([ital E][sub [nu]](MeV)), gives a model independent measurement of the strength of the destructive interference between the charged and neutral currents, [ital I]=[minus]1.07[plus minus]0.21, that agrees well with the standard model (SM) prediction [ital 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.

• DOE Contract Number: AC05-76ER02504; W-31109-ENG-38; W-7405-ENG-36
• OSTI ID: 7025690
• Report Number(s): CONF-930293--
• Conference Information: Journal Name: AIP Conference Proceedings (American Institute of Physics); (United States) Journal Volume: 300:1
• Country of Publication: United States
• Language: English

Related Subjects

662310* -- Weak & Electromagnetic Interactions of Leptons-- (1992-)
72 PHYSICS OF ELEMENTARY PARTICLES AND FIELDS
BOSONS
CHARGED-CURRENT INTERACTIONS
CROSS SECTIONS
ELASTIC SCATTERING
ELEMENTARY PARTICLES
INTERACTIONS
INTERFERENCE
INTERMEDIATE BOSONS
INTERMEDIATE VECTOR BOSONS
LEPTON-LEPTON INTERACTIONS
NEUTRAL-CURRENT INTERACTIONS
NEUTRINO-ELECTRON INTERACTIONS
PARTICLE INTERACTIONS
SCATTERING