Scientific article

English

Test of CP invariance in Z→μ⁺μ⁻γ decay

ContributorsL3 Collab.

CollaboratorsAmbrosi, Giovanni; Bourquin, Maurice; Paus-Cecchi, Claudia; Duchesneau, Dominique Robert; Extermann, Pierre; Field, John; Forconi, Gilles Raymond; Fredj, Lotfi; Kienzle, Maria Novella; Produit, Nicolas

; Sciarrino, Deborah

Published inPhysics letters. B, vol. 436, no. 3-4, p. 428-436

Publication date1998

Abstract

We report on the first test of CP invariance in Z decays with hard photon radiation. The data recorded with the L3 detector at centre-of-mass energies near the Z resonance are used to search for CP violation in the reaction e + e − →μ + μ − γ . No evidence for CP violation is found and limits on the CP-violating form factors f μ A and f μ V are derived.

Keywords

Electron positron: colliding beams
Electron positron: annihilation
Z0: electroproduction
Z0: radiative decay
Invariance: CP
Form factor: vector
Form factor: axial-vector
L3
Experimental results
CERN LEP Stor
Z0 --> muon+ muon- photon
Z0 --> tau+ tau- photon
Approx. 91 GeV-cms

Affiliation entities

Faculté des sciences / Département d'astronomie

Citation (ISO format)

L3 Collab. Test of CP invariance in Z→μ⁺μ⁻γ decay. In: Physics letters. B, 1998, vol. 436, n° 3-4, p. 428–436. doi: 10.1016/s0370-2693(98)00965-4

Article (Published version)

Identifiers

PID : unige:187261
DOI : 10.1016/s0370-2693(98)00965-4

Additional URL for this publicationhttps://linkinghub.elsevier.com/retrieve/pii/S0370269398009654

Journal ISSN0370-2693

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