Radiative decays of the {upsilon}(1S) to a pair of charged hadrons

Journal Article · Wed Feb 01 00:00:00 EST 2006 · Physical Review. D, Particles Fields

DOI:https://doi.org/10.1103/PhysRevD.73.032001· OSTI ID:20776630

Athar, S B; Avery, P; Breva-Newell, L; Patel, R; Potlia, V; Stoeck, H; Yelton, J ^[1]; Rubin, P ^[2]; Cawlfield, C; Eisenstein, B I; Gollin, G D; Karliner, I; Kim, D; Lowrey, N; Naik, P; Sedlack, C; Selen, M; White, E J; Williams, J; Wiss, J ^[3]

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1. University of Florida, Gainesville, Florida 32611 (United States)
2. George Mason University, Fairfax, Virginia 22030 (United States)
3. University of Illinois, Urbana-Champaign, Illinois 61801 (United States)

Using data obtained with the CLEO III detector, running at the Cornell Electron Storage Ring (CESR), we report on a new study of exclusive radiative {upsilon}(1S) decays into the final states {gamma}{pi}{sup +}{pi}{sup -}, {gamma}K{sup +}K{sup -}, and {gamma}pp. We present branching ratio measurements for the decay modes {upsilon}(1S){yields}{gamma}f{sub 2}(1270), {upsilon}(1S){yields}{gamma}f{sub 2}{sup '}(1525), and {upsilon}(1S){yields}{gamma}K{sup +}K{sup -}; helicity production ratios for f{sub 2}(1270) and f{sub 2}{sup '}(1525); upper limits for the decay {upsilon}(1S){yields}{gamma}f{sub J}(2200), with f{sub J}(2220){yields}{pi}{sup +}{pi}{sup -}, K{sup +}K{sup -}, pp; and an upper limit for the decay {upsilon}(1S){yields}{gamma}X(1860), with X(1860){yields}{gamma}pp.

• OSTI ID: 20776630
• Journal Information: Physical Review. D, Particles Fields, Vol. 73, Issue 3; Other Information: DOI: 10.1103/PhysRevD.73.032001; (c) 2006 The American Physical Society; Country of input: International Atomic Energy Agency (IAEA); ISSN 0556-2821
• Country of Publication: United States
• Language: English

Related Subjects

72 PHYSICS OF ELEMENTARY PARTICLES AND FIELDS
BRANCHING RATIO
CESR STORAGE RING
D S MESONS
ELECTRONS
F2 PRIME-1525 MESONS
F2-1270 MESONS
HADRONIC PARTICLE DECAY
HELICITY
KAONS MINUS
KAONS PLUS
MULTIPARTICLE SPECTROMETERS
PARTICLE IDENTIFICATION
PIONS MINUS
PIONS PLUS
RADIATIVE DECAY
RESONANCE PARTICLES
UPSILON-9460 MESONS