Vector-Meson-Dominance Model for Radiative Decays Involving Light Scalar Mesons

Journal Article · Wed May 01 04:00:00 EDT 2002 · Phys. Rev. Lett. 88, 181603 (2002) (Print Issue of 6 May 2002)

OSTI ID:793627

We study a vector dominance model which predicts a fairly large number of currently interesting decay amplitudes of the types S {yields} {gamma} {gamma}, V {yields} S{gamma} and S {yields} V{gamma}, where S and V denote scalar and vector mesons, in terms of three parameters. As an application we first use our approach to obtain the usual puzzling result {gamma}({phi} {yields}f{sub 0}{gamma})/{gamma}({phi} -. a{sub 0}{sup 0}{gamma}) {approx}< 1 rather than the observed value of about 3. The model makes it easy to test in detail a recent proposal to solve this puzzle by including the isospin violating a{sub 0}{sup 0}-f{sub 0} mixing and we find that it seems successful.

• Research Organization: Thomas Jefferson National Accelerator Facility, Newport News, VA (US)
• Sponsoring Organization: USDOE Office of Energy Research (ER) (US)
• DOE Contract Number: AC05-84ER40150
• OSTI ID: 793627
• Report Number(s): JLAB-THY-02-07; DOE/ER/40150-1988; hep-ph/0202069; SUNY-NTG-02-4; SU-4252-755
• Journal Information: Phys. Rev. Lett. 88, 181603 (2002) (Print Issue of 6 May 2002), Journal Name: Phys. Rev. Lett. 88, 181603 (2002) (Print Issue of 6 May 2002)
• Country of Publication: United States
• Language: English

Related Subjects

72 PHYSICS OF ELEMENTARY PARTICLES AND FIELDS
DECAY AMPLITUDES
ISOSPIN
RADIATIVE DECAY
SCALAR MESONS
VECTOR DOMINANCE MODEL
VECTOR MESONS