Is the threshold enhancement in γγ→ρ0ρ0 evidence for an isoscalar, JPC=0++ exotic state?

Godbole, Rohini M. ; Sarma, K. V. L. (1982) Is the threshold enhancement in γγ→ρ0ρ0 evidence for an isoscalar, JPC=0++ exotic state? Physics Letters B, 109 (6). pp. 504-508. ISSN 0370-2693

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Official URL: http://linkinghub.elsevier.com/retrieve/pii/037026...

Related URL: http://dx.doi.org/10.1016/0370-2693(82)91125-X

Abstract

The threshold enhancement in the cross section γγ→ρ0ρ0, including the lower energy point reported by the CELLO group, and the observed angular distributions have been interpreted in terms of an isoscalar resonance with JPC=0++, mass 1450-1550 MeV and width 100-150 MeV.

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