Search results for "CHARGED WEAK-INTERACTIONS"

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A study of the Lorentz structure in tau decays

2000

This paper describes a measurement of the Michel parameters, \eta, \rho, \xi, \xi\delta, and the average \nu_{\tau} helicity, h_{\nu_{\tau}}, in tau lepton decays together with the first measurement of the tensor coupling in the weak charged current. The tau+tau- pairs were produced at the LEP e+e- collider at CERN from 1992 through 1995 in the DELPHI detector. Assuming lepton universality in the decays of the tau the measured values of the parameters were: \eta = -0.005 +/- 0.036 +/- 0.037, \rho = 0.775 +/- 0.023 +/- 0.020, \xi = 0.929 +/- 0.070 +/- 0.030, \xi\delta = 0.779 +/- 0.070 +/- 0.028, h_{\nu_{\tau}} = -0.997 +/- 0.027 +/- 0.011. The strength of the tensor coupling was measured to…

Particle physicsPhysics and Astronomy (miscellaneous)CHARGED WEAK-INTERACTIONSLUND MONTE-CARLOENERGIESLorentz transformationFOS: Physical sciences01 natural sciencesJET FRAGMENTATIONPartícules (Física nuclear)law.inventionHigh Energy Physics - Experimentsymbols.namesakeHigh Energy Physics - Experiment (hep-ex)NEUTRINO HELICITYLUND MONTE-CARLO; CHARGED WEAK-INTERACTIONS; RIGHT-SYMMETRICAL MODEL; MICHEL PARAMETERS; NEUTRINO HELICITY; RADIATIVE-CORRECTIONS; JET FRAGMENTATION; ENERGIES; LEPTON; PARTICLESlaw0103 physical sciences[PHYS.HEXP]Physics [physics]/High Energy Physics - Experiment [hep-ex]RADIATIVE-CORRECTIONSPARTICLESTensor010306 general physicsColliderLEPTONEngineering (miscellaneous)Charged currentDELPHIPhysics010308 nuclear & particles physicsMICHEL PARAMETERSCoupling (probability)HelicityLARGE ELECTRON POSITRON COLLIDERRIGHT-SYMMETRICAL MODELPARTICLE PHYSICS; LARGE ELECTRON POSITRON COLLIDER; DELPHIsymbolsMichel parametersPARTICLE PHYSICSFísica nuclearHigh Energy Physics::ExperimentAstrophysics::Earth and Planetary AstrophysicsParticle Physics - ExperimentLeptonEuropean physical journal : C : particles and fields
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