Search for Leptons Produced in Association with Prompt Muons in Hadronic Interactions

R. Lipton; B. Gobbi; J. Keren; J. Rosen; R. Ruchti; D. Spelbring; D. Chaney; T. Ferbel; W. Mollet; P. Slattery; D. Underwood; E. Bleser; D. Johnson

doi:10.1103/PhysRevLett.40.608

Search for Leptons Produced in Association with Prompt Muons in Hadronic Interactions

R. Lipton, B. Gobbi, J. Keren, J. Rosen, R. Ruchti, D. Spelbring, D. Chaney, T. Ferbel, W. Mollet, P. Slattery, D. Underwood, E. Bleser, and D. Johnson

Phys. Rev. Lett. 40, 608 – Published 6 March 1978; Erratum Phys. Rev. Lett. 41, 598 (1978)

Abstract

We present the results of a search for leptons produced in coincidence with a prompt muon in neutron-beryllium collisions at 300 GeV/c. The experiment was sensitive to trigger muons and associated leptons of both low momentum and low transverse momentum. A clear $μ^{\pm} μ^{\mp}$ signal was found, but no significant $μ^{\pm} e^{\mp}$ signal was observed. We report an upper limit for associated charmed-particle production [ $σ_{C \bar{C}} \cdot B (C \to μ + X) \cdot B (C \to e + X)$ ] of < 340 nb/nucleon, at the 95% confidence level.