# Test of CP Invariance in Z $\to \mu^+\mu^-\gamma$ decay

3 CMS
IP2I Lyon - Institut de Physique des 2 Infinis de Lyon
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 $\mathrm{e^+e^-}\rightarrow\mu^+\mu^-\gam ma$. No evidence for CP violation is found and limits on the CP-violating form factors $f^\mu_{\mathrm{A}}$ and $f^\mu_{\mathrm{V}}$ are derived.
Document type :
Journal articles

Cited literature [18 references]

http://hal.in2p3.fr/in2p3-00023167
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Submitted on : Friday, November 6, 1998 - 10:02:17 AM
Last modification on : Friday, September 10, 2021 - 1:50:06 PM
Long-term archiving on: : Tuesday, June 2, 2015 - 1:12:02 PM

### Citation

M. Acciarri, O. Adriani, M. Aguilar-Benitez, S. Ahlen, J. Alcaraz, et al.. Test of CP Invariance in Z $\to \mu^+\mu^-\gamma$ decay. Physics Letters B, Elsevier, 1998, 436, pp.428-436. ⟨10.1016/S0370-2693(98)00965-4⟩. ⟨in2p3-00023167⟩

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