Search for a(0)(980) and f(0)(980) mesons in phi ->gamma K(K)over-bar - art. no. 094016

Citation
Nn. Achasov et Vv. Gubin, Search for a(0)(980) and f(0)(980) mesons in phi ->gamma K(K)over-bar - art. no. 094016, PHYS REV D, 6409(9), 2001, pp. 4016
Citations number
24
Language
INGLESE
art.tipo
Article
Categorie Soggetti
Physics
Journal title
PHYSICAL REVIEW D
ISSN journal
0556-2821 → ACNP
Volume
6409
Issue
9
Year of publication
2001
Database
ISI
SICI code
0556-2821(20011101)6409:9<4016:SFAAFM>2.0.ZU;2-3
Abstract
We study the decay phi-->gammaK(+)K(-), taking into account the scalar meso n production phi-->gamma (f(o)+a(o)) --> gammaK(+)K(-) and final state radi ation. We note that the relative sign between the final state radiation amp litude and the scalar meson production amplitude is fixed in the K+K- loop model which describes data on the phi -->gammaf(o)-->gamma pi pi and phi--> ya(o)-->gamma pi eta decays. As a consequence this model predicts a definit e interference between the final state radiation and the scalar resonance p roduction amplitudes. We calculate the mass spectra of the (,phi-->gammaK()K(-) decay and the differential cross sections for e(+)e(-)-->phi gammaK()K(-) and e(+)e(-)-->phi -->gammaK(o)(K) over bar (o) reactions.