Proof of comparable K-pair and pi -pair production from time-like photons of 15, 16, and 17 GeV and determination of the K-meson electromagnetic form factor

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The observation of 21 K/sup +/K/sup -/ pairs in 38 hadron pair events produced at 1.5, 1.6 and 1.7 GeV total centre-of-mass energies in e /sup +/e/sup -/ annihilations, establishes that time-like photons produce K pairs and pi pairs with comparable rates in this energy range. The K-meson electromagn...

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Detalles Bibliográficos
Autores principales: Bernardini, M, Bollini, D, Brunini, P L, Fiorentino, E, Massam, Thomas, Monari, L, Palmonari, F, Rimondi, F, Zichichi, A
Lenguaje:eng
Publicado: 1973
Materias:
Particle Physics - Phenomenology
Acceso en línea:https://dx.doi.org/10.1016/0370-2693(73)90416-4
http://cds.cern.ch/record/880719
Descripción
Sumario:The observation of 21 K/sup +/K/sup -/ pairs in 38 hadron pair events produced at 1.5, 1.6 and 1.7 GeV total centre-of-mass energies in e /sup +/e/sup -/ annihilations, establishes that time-like photons produce K pairs and pi pairs with comparable rates in this energy range. The K-meson electromagnetic form factor at a mean s-value of 2.4 GeV/sup 2/ is measured to be mod F/sub K/ mod =0.50+or-0.08. The number of e/sup +/e/sup -/ pairs observed in the same angular and energy range is 5148. (3 refs).

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