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Measurement of the branching ratio of UPSILON(3S). --> pi. /sup +/. pi. /sup -/UPSILON(1S)

Journal Article · · Phys. Rev. Lett.; (United States)
The branching ratio of UPSILON(3S)..--> pi../sup +/..pi../sup -/UPSILON(1S) has been measured to be (4.9 +- 0.9 +- 0.5)%. The di-pion invariant-mass distribution for this decay is flatter than that for the decays UPSILON(2S)..--> pi../sup +/..pi../sup -/UPSILON(1S) and psi'..--> pi../sup +/..pi../sup -/psi.
Research Organization:
Rutgers University, New Brunswick, New Jersey 08854
OSTI ID:
6768785
Journal Information:
Phys. Rev. Lett.; (United States), Journal Name: Phys. Rev. Lett.; (United States) Vol. 49:9; ISSN PRLTA
Country of Publication:
United States
Language:
English