Positron production by muon neutrinos BEBC filled with a neon-hydrogen mixture |
| |
Authors: | O. Erriquez,S. Natali,S. Nuzzo,A. Pullia,F. Romano,D.C. Colley,G.T. Jones,L. Lowe,S. O Neale,S.J. Sewell,G. Bertrand-Coremans,H. Mulkens,J. Sacton,C. Vander Velde-Wilquet,J. Wickens,V. Brisson,P. Petiau,T.W. Jones |
| |
Affiliation: | Instituto di Fisica dell''Università and Sezione INFN, Bari, Italy;University of Birmingham, Birmingham, UK;Inter-University Institute for High Energies, U.L.B., V.U.B., Brussels, Belgium;Ecole Polytechnique, Palaiseau, France;Rutherford Laboratory, Chilton, Didcot, UK |
| |
Abstract: | For e+ energy > 0.3 GeV and 10 GeV < visible energy < 100 GeV we find that: (i) ; (ii) 1.2 ± 0.5 neutral strange particles are produced per μ?e+ event; (iii) the lifetime of possible positron-parent particles is < 3 × 10?10 s (90% C.L.); (iv) the cross section for direct e+ production via the neutral current is < 0.2 times that via the charged current (90% C.L.); (v) the cross section for producing heavy leptons, L+, decaying into e+ … is < 0.7 × 10?3 times that for μ?production, implying M(L+) > 10 GeV. |
| |
Keywords: | Bari-Birmingham-Brussels-Ecole Polytechnique-Rutherford-Saclay-UCL Collaboration |
本文献已被 ScienceDirect 等数据库收录! |
|