Journal Article

PreJuSER-50304

http://join2-wiki.gsi.de/foswiki/pub/Main/Artwork/join2_logo100x88.png The radiative decays phi to gamma a_0 / f_0 in the molecular model for the scalar mesons

Kalashnikova, Y. S. ; Kudryavtsev, A. E. ; Nefediev, A. V. ; Hanhart, C.FZJ* ; Haidenbauer, J.FZJ*

2005
Springer Berlin

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Please use a persistent id in citations: http://hdl.handle.net/2128/10641  doi:10.1140/epja/i2005-10008-4

Abstract: We investigate the radiative decays of the phi-meson to the scalar mesons a(0)(980) and f(0)(980). We demonstrate that, contrary to earlier claims, these decays should be of the same order of magnitude for a molecular state and for a compact state and, therefore, the available experimental information is consistent with both a molecular as well as a compact structure of the scalars. Thus, the radiative decays of the phi-meson into scalars establish a sizable K K component of the scalar mesons, but do not allow to discriminate between molecules and compact states.

Keyword(s): Phi(1020): radiative decay ; a0(980) ; f0(980) ; Phi(1020): branching ratio ; scalar meson: model ; scalar meson: wave function ; K anti-K: bound state ; form factor ; potential ; numerical calculations ; Phi(1020) --> a0(980) photon ; Phi(1020) --> f0(980) photon

Note: Record converted from VDB: 12.11.2012

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Contributing Institute(s):

1. Institut 3 (Theoretische Kernphysik) (IKP-TH)

Research Program(s):

1. Physik der Hadronen (M01)

Appears in the scientific report 2005

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