par Dumont, Jean-Jacques 
;Lemonne, Jacques ;Vanhomwegen, G.;Verbeure, F;Wickens, John H. ;Hagman, V.M.;Karimäki, Veikko;Tuominiemi, J.K.;Valtonen, K.;Estruch, J.A.;Evans, W.H.;Mason, Philip;Muirhead, H.;Baland, J.F.;Grard, Fernand ;Herquet, P. ;Kesteman, José;Ekspong, G.;Sellden, B.;Szilly, L.;Yamdagni, N.
Référence Zeitschrift für Physik. C, Particles and fields, 11, 2, page (95-101)
Publication Publié, 1981-06
;Lemonne, Jacques ;Vanhomwegen, G.;Verbeure, F;Wickens, John H. ;Hagman, V.M.;Karimäki, Veikko;Tuominiemi, J.K.;Valtonen, K.;Estruch, J.A.;Evans, W.H.;Mason, Philip;Muirhead, H.;Baland, J.F.;Grard, Fernand ;Herquet, P. ;Kesteman, José;Ekspong, G.;Sellden, B.;Szilly, L.;Yamdagni, N.Référence Zeitschrift für Physik. C, Particles and fields, 11, 2, page (95-101)
Publication Publié, 1981-06
Article révisé par les pairs
| Résumé : | A search for directly produced electrons in 70 GeV/c pp interactions has been performed using BEBC equipped with a hydrogen filled track sensitive target surrounded by a hydrogen/neon blanket. No candidates for single electron production with momentum pe>500 MeV/c were found in a sample of 66,000 primary interactions. This result places an upper limit of 2.5 μb on the cross section for single e± production at the 90% confidence level. The corresponding upper limit on the charmed particle production cross section in 14 μb. From the observation of 7 events producing an e+e- pair with mass, {Mathematical expression} the e±/π± ratio from this source is estimated to be (0.7±0.2)×10-4. © 1981 Springer-Verlag. |
