Measurement of the branching ratio of UPSILON(2S). --&gt; pi. /sup +/. pi. /sup -/+UPSILON(1S)

Mueller, J J; Potter, D; Sannes, F; Skubic, P; Stone, R; Brody, A; Chen, A; Goldberg, M; Horwitz, N; Kandaswamy, J; Kooy, H; Lariccia, P; Moneti, G C; Bridges, D L; Alam, M S; Csorna, S E; Hicks, R; Panvini, R S; Poucher, J S; Andrews, D; Avery, P; Berkelman, K; Cabenda, P; Cassel, D G; DeWire, J W; Ehrlich, R; Ferguson, T; Gentile, T; Gilchriese, M G.D.; Gittelman, B; Hartill, D L; Herrup, D; Herzlinger, M; Kreinick, D L; Mistry, N B; Nordberg, E; Perchonok, R; Plunkett, R; Shinsky, K A; Siemann, R H; Silverman, A; Stein, P C; Stone, S; Talman, R; Thonemann, H G; Weber, D; Wilcke, R; Sadoff, A J; Bebek, C; Haggerty, J; Izen, J M; Longuemare, C; Loomis, W A; Mackay, W W; Pipkin, F M; Rohlf, J; Tanenbaum, W; Wilson, R; Chadwick, K; Ganci, P; Kagan, H; Kass, R; Lobkowicz, F; Melissinos, A C; Olsen, S L; Poling, R; Rosenfeld, C; Rucinski, G; Thorndike, E H

doi:10.1103/PhysRevLett.46.1181

Measurement of the branching ratio of UPSILON(2S). --> pi. /sup +/. pi. /sup -/+UPSILON(1S)

Journal Article · Mon May 04 04:00:00 EDT 1981 · Phys. Rev. Lett.; (United States)

DOI:https://doi.org/10.1103/PhysRevLett.46.1181· OSTI ID:6333120

Mueller, J J; Potter, D; Sannes, F; Skubic, P; Stone, R; Brody, A; Chen, A; Goldberg, M; Horwitz, N; Kandaswamy, J; Kooy, H; Lariccia, P; Moneti, G C; Bridges, D L; Alam, M S; Csorna, S E; Hicks, R; Panvini, R S; Poucher, J S; Andrews, D more »

We have observed the decay of the UPSILON(2S) into the UPSILON(1S), obtaining a branching ratio of 19.1 +- 3.1 +- 2.9% for the mode UPSILON(2S)..--> pi../sup +/..pi../sup -/UPSILON(1S). The di-pion mass spectrum peaks at large invariant mass, and the angular distribution of the di-pion system is consistent with s-wave production.

Research Organization:: Rutgers University, New Brunswick, New Jersey 08854

OSTI ID:: 6333120

Journal Information:: Phys. Rev. Lett.; (United States), Journal Name: Phys. Rev. Lett.; (United States) Vol. 46:18; ISSN PRLTA

Country of Publication:: United States

Language:: English

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Related Subjects

645102* -- High Energy Physics-- Particle Interactions & Properties-Experimental-- Weak Interactions & Properties
72 PHYSICS OF ELEMENTARY PARTICLES AND FIELDS
ANGULAR DISTRIBUTION
BOSONS
BRANCHING RATIO
DATA
DECAY
DISTRIBUTION
ELEMENTARY PARTICLES
ENERGY LEVELS
EXPERIMENTAL DATA
HADRONIC PARTICLE DECAY
HADRONS
INFORMATION
MASS SPECTRA
MESON RESONANCES
MESONS
NUMERICAL DATA
PARTIAL WAVES
PARTICLE DECAY
PIONS
PIONS MINUS
PIONS PLUS
PSEUDOSCALAR MESONS
RESONANCE PARTICLES
S STATES
S WAVES
SPECTRA
UPSILON RESONANCES
UPSILON-10000 RESONANCES
UPSILON-9500 RESONANCES

Measurement of the branching ratio of UPSILON(2S). --> pi. /sup +/. pi. /sup -/+UPSILON(1S)

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