The ϱ- radiative decay width has been measured by studying the production of ϱ- via the Primakoff effect by 200 GeV incident π- on Cu and Pb targets. This width was obtained by fitting the measured dσ/dt for ϱ production with the theoretical coherent differential cross section including both the electromagnetic and strong contributions. The measured radiative width value is 81 +/- 4 +/- 4 keV: it is consistent with the ratio Γ(ϱ --> πγ)/Γ(ω --> πγ) ~ case:1/9 as expected from the vector dominance and the quark model.
The ϱ radiative decay width: a measurement at 200 GeV / L., Capraro; Lévy, P. h.; M., Querrou; B., Van Hecke; M., Verbeken; E., Enorini; F. L., Fabbri; P., Laurelli; A., Zallo; G., Bellini; S., Bonetti; A., Fincato; M., Leopold; D., Menasce; E., Meroni; L., Moroni; D., Pedrini; L., Perasso; F., Ragusa; S., Sala; M., Vittone; S. R., Amendolla; G., Batignani; A., Bedeschi; E. H., Bellamy; E., Bertolucci; Bosisio, Luciano; U., Bottigli; Budinich, Marco; C., Bradaschia; F., Fidecaro; L., Foá; E., Focardi; P., Giannetti; M. A., Giorgi; P. S., Marrocchesi; A., Menzione; L., Ristori; A., Scribano; A., Stefanini; G., Tonelli; G. A., Beck; G., Bologna; M. G., Green; P. V., March; M. P. J., Landon; J. A., Strong; R., Tenchini. - In: NUCLEAR PHYSICS. B. - ISSN 0550-3213. - STAMPA. - B288:(1987), pp. 659-680. [10.1016/0550-3213(87)90233-1]
The ϱ radiative decay width: a measurement at 200 GeV
BOSISIO, LUCIANO;BUDINICH, MARCO;
1987-01-01
Abstract
The ϱ- radiative decay width has been measured by studying the production of ϱ- via the Primakoff effect by 200 GeV incident π- on Cu and Pb targets. This width was obtained by fitting the measured dσ/dt for ϱ production with the theoretical coherent differential cross section including both the electromagnetic and strong contributions. The measured radiative width value is 81 +/- 4 +/- 4 keV: it is consistent with the ratio Γ(ϱ --> πγ)/Γ(ω --> πγ) ~ case:1/9 as expected from the vector dominance and the quark model.Pubblicazioni consigliate
I documenti in IRIS sono protetti da copyright e tutti i diritti sono riservati, salvo diversa indicazione.
