par Binon, Freddy 
;Donskov, Sergey;Duteil, P.;Gouanère, M.;Inyakin, Alexandre A.V.;Kachanov, Vasilij V.A.;Kakauridze, D.B. D.B.;Khaustov, G.;Kulik, Alexei A.V.;Lagnaux, Jean-Pierre ;Lednev, Andrey;Mikhailov, Yu;Mouthuy, Th;Peigneux, Jean Pierre;Possoz, A.;Prokoshkin, Yu Y.D.;Rodnov, Yu Y.V.;Sadovsky, Sergey S.A.;Sillou, Daniel;Singovsky, Alexandre A.V.;Stroot, Jean-Pierre ;Sugonyaev, Valentine
Référence Nuclear physics. B, 239, 2, page (311-324)
Publication Publié, 1984-07
;Donskov, Sergey;Duteil, P.;Gouanère, M.;Inyakin, Alexandre A.V.;Kachanov, Vasilij V.A.;Kakauridze, D.B. D.B.;Khaustov, G.;Kulik, Alexei A.V.;Lagnaux, Jean-Pierre ;Lednev, Andrey;Mikhailov, Yu;Mouthuy, Th;Peigneux, Jean Pierre;Possoz, A.;Prokoshkin, Yu Y.D.;Rodnov, Yu Y.V.;Sadovsky, Sergey S.A.;Sillou, Daniel;Singovsky, Alexandre A.V.;Stroot, Jean-Pierre ;Sugonyaev, ValentineRéférence Nuclear physics. B, 239, 2, page (311-324)
Publication Publié, 1984-07
Article révisé par les pairs
| Résumé : | The production of χ particles in the reaction π-p → χ + ... has been studied near threshold. The measurements have been performed at the 70 GeV IHEP proton synchrotron using the hodoscope spectrometer GAMS-2000. The χ particles have been identified through their decay χ → J/ψ + γ, J/ψ → e+e-. In the region XF ≳0.4 the fraction of obsered J/ψ particles which is obtained via the decay of χ states is 0.44 ± 0.16. The χ longitudinal and transverse momentum distributions are similar to those obtained for J/ψ. The inclusive production cross section of χ particles (3P1 and 3P2 states) at 38 GeV/c is σXF>0 (π-p → χ + ...) = (28±11) nb. © 1984. |
