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Search for baryon and lepton number violating Z(0) decays

Abbiendi, G; Ackerstaff, K; Alexander, G; Allison, J; Altekamp, N; Anderson, KJ; Anderson, S; ... OPAL Collaboration, ; + view all (1999) Search for baryon and lepton number violating Z(0) decays. PHYS LETT B , 447 (1-2) 157 - 166.

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Abstract

Using data collected with the OPAL detector at LEP, we have searched for the processes e(+)e(-) --> Z(0) --> pe(-),p mu(-) and the charge conjugate final-states. These would violate the conservation of the baryon-number B, lepton-number L and the fermion-number n = (B + L). No evidence for such decays has been found, and the 95% confidence level upper limits on the partial widths Gamma(Z(0) --> pe) and Gamma(Z(0) --> p mu) are found to be 4.6 and 4.4 keV respectively. (C) 1999 Published by Elsevier Science B.V. All rights reserved.

Type: Article
Title: Search for baryon and lepton number violating Z(0) decays
Keywords: PARTICLE IDENTIFICATION, RADIATIVE-CORRECTIONS, MICROVERTEX DETECTOR, PHOTON CORRECTIONS, BHABHA SCATTERING, HIGH-ENERGIES, OPAL, SPHALERON, PROGRESS, Z0
UCL classification: UCL > School of BEAMS
UCL > School of BEAMS > Faculty of Maths and Physical Sciences
URI: http://discovery.ucl.ac.uk/id/eprint/1303370
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