Phys. Rev. D 41, 1401–1409 (1990)Radiative ϒ(1S) decaysReceived 5 May 1989; published in the issue dated 1 March 1990 We report on a study of exclusive radiative decays of the ϒ(1S) resonance. We have considered decays into final states of the form ϒ→γn(h+h-), with (h+h-) denoting a charged-hadron pair (either π+π-, K+K-, or pp̅ ), and n denoting the number of such pairs in the event. We measure branching ratios for n=2, 3, and 4, and search for structure in the recoiling hadronic system. For the n=1 case, we present upper limits. No evidence is observed for two-body radiative decays of the ϒ(1S) meson in any of the above channels. © 1990 The American Physical Society URL:
http://link.aps.org/doi/10.1103/PhysRevD.41.1401
DOI:
10.1103/PhysRevD.41.1401
PACS:
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