Observation of the Muonic Decay of the Charged Intermediate Vector Boson

Published: Thursday, January 26, 1984
Citation: Physical Review Letters, Volume B134, Pages 469-476
Link: http://www.sciencedirect.com/science?_ob=ArticleURL&_udi=B6TVN-47DD3H1-6Y&_user=10&...

Authors (1 total): J. Rohlf


Muons of high transverse momentum pμT have been observed in the large drift chambers surrounding the UA1 detector at the CERN 540 GeV p collider. For an integrated luminosity of 108 nb−1, 14 isolated muons have been found with pT > 15 GeV/c. They are correlated with a large imbalance in total transverse energy, and show a kinematic behaviour consistent with the muonic decay of the Intermediate Vector Boson W± of weak interactions. The partial cross section is in agreement with previous measurements for electronic decays and with muon-electron universality. The W mass is determined to be mW = 81+6−7 GeV/c2.