Phys. Rev. Lett. 58, 307–310 (1987)Study of π+π- transitions from the Υ(3S)Received 29 September 1986; published in the issue dated 26 January 1987 We have investigated the transitions Υ(3S)→π+π-Υ(1S) and Υ(3S)→π+π-Υ(2S) and the cascade process Υ(3S)→Υ(2S)+X, Υ(2S)→π+π-Υ(1S), both in the exclusive decay mode where the daughter Υ state decays into two leptons, and in the inclusive decay mode where the daughter Υ state decays hadronically. Results are presented on branching fractions and the properties of the π+π- system. Possible evidence for the transition Υ(3S)→π+π-Υ(11P1) is presented. © 1987 The American Physical Society URL:
http://link.aps.org/doi/10.1103/PhysRevLett.58.307
DOI:
10.1103/PhysRevLett.58.307
PACS:
13.25.+m, 13.20.Gd
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