Two photon decay of neutral scalars below 1.5 GeV in a chiral model for qq and qqqq states

Journal Article · Fri Apr 01 00:00:00 EST 2005 · Physical Review. D, Particles Fields

DOI:https://doi.org/10.1103/PhysRevD.71.074008· OSTI ID:20708979

Rodriguez, Simon; Napsuciale, Mauro ^[1]

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1. Instituto de Fisica, Universidad de Guanajuato, Lomas Del Bosque 103, Fraccionamiento Lomas del Campestre, 37150, Leon, Guanajuato (Mexico)

We study the two photon decay of neutral scalars below 1.5 GeV in the context of a recently proposed chiral model for qq and qqqq states. We find good agreement with experimental results for the a{sub 0}(980){yields}{gamma}{gamma} decay. Our calculations for f{sub 0}(980){yields}{gamma}{gamma} shows that further work is necessary in order to understand the structure of this meson. The model predicts {gamma}(a{sub 0}(1450){yields}{gamma}{gamma})=0.16{+-}0.10 KeV, {gamma}({sigma}{yields}{gamma}{gamma})=(0-1.13) KeV, {gamma}(f{sub 0}(1370){yields}{gamma}{gamma})=(0-0.22) KeV, {gamma}(f{sub 0}(1500){yields}{gamma}{gamma})=(0-1.51) KeV.

• OSTI ID: 20708979
• Journal Information: Physical Review. D, Particles Fields, Vol. 71, Issue 7; Other Information: DOI: 10.1103/PhysRevD.71.074008; (c) 2005 The American Physical Society; Country of input: International Atomic Energy Agency (IAEA); ISSN 0556-2821
• Country of Publication: United States
• Language: English

Related Subjects

72 PHYSICS OF ELEMENTARY PARTICLES AND FIELDS
A0-980 MESONS
CHIRALITY
F0-1300 MESONS
F0-980 MESONS
GEV RANGE
KEV RANGE
PARTICLE DECAY
PHOTONS
SCALARS