Leptonic, hadronic, and radiative decay of the b anti-b quarkonium
Thesis/Dissertation
·
OSTI ID:5678431
Data from the CLEO detector at the Cornell Electron Storage Ring have been used to measure the branching ratios of hadronic decay, branching ratios of leptonic decays and radiative decays of the Upsilon(2S). These branching ratios are: Br(Upsilon(2S) ..-->.. ..pi../sup +/..pi../sup -/ Upsilon(1S)); Br(Upsilon(2S) ..-->.. ..mu../sup +/..mu../sup -/); Br(Upsilon(1S) ..-->.. ..mu../sup +/..mu../sup -/); and Br(2/sup 3/S ..-->.. ..gamma gamma..1/sup 3/S). For the transition of Upsilon(2S) ..-->.. Upsilon(1S)eta we give an upper limit on the branching ratio. We have measured the mass difference between the Upsilon(2S) and the Upsilon(1S) with a much higher accuracy than the CESR measurement. Using the reaction e/sup +/e2) ..-->.. ..mu../sup +/..mu../sup -/ we have looked for the electroweak asymmetry at 10 GeV CM energy. The result shows evidence of the existence of the weak neutral current in the e/sup +/e/sup -/ collisions at CLEO. The properties of the ..pi pi.. system in the transition Upsilon(2S) ..-->.. ..pi pi..Upsilon(1S) and Upsilon(3S) ..-->.. ..pi pi..Upsilon(1S) have been studied. A detailed discussion of the different properties of the ..pi pi.. system in the Upsilon(2S) and the Upsilon(3S) cases is presented. The data give a good demonstration of the chiral symmetry property in the decay Upsilon(2S) ..-->.. ..pi pi..Upsilon(1S), while the Upsilon(3S) ..-->.. ..pi pi..Upsilon(1S) does not.
- Research Organization:
- Vanderbilt Univ., Nashville, TN (USA)
- OSTI ID:
- 5678431
- 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
ALGEBRAIC CURRENTS
BASIC INTERACTIONS
BOSONS
BRANCHING RATIO
CESR STORAGE RING
CHIRAL SYMMETRY
CURRENTS
DATA
DECAY
ELECTRON-POSITRON INTERACTIONS
ELEMENTARY PARTICLES
EXPERIMENTAL DATA
FERMIONS
HADRONS
INFORMATION
INTERACTIONS
LEPTON-LEPTON INTERACTIONS
LEPTONIC DECAY
LEPTONS
MASS
MASSLESS PARTICLES
MESON RESONANCES
MESONS
MUONS
NEUTRAL CURRENTS
NUMERICAL DATA
PARTICLE DECAY
PARTICLE INTERACTIONS
PHOTONS
PIONS
PSEUDOSCALAR MESONS
RADIATIVE DECAY
RESONANCE PARTICLES
STORAGE RINGS
SYMMETRY
UPSILON RESONANCES
WEAK HADRONIC DECAY
WEAK INTERACTIONS
WEAK NEUTRAL CURRENTS
WEAK PARTICLE DECAY
72 PHYSICS OF ELEMENTARY PARTICLES AND FIELDS
ALGEBRAIC CURRENTS
BASIC INTERACTIONS
BOSONS
BRANCHING RATIO
CESR STORAGE RING
CHIRAL SYMMETRY
CURRENTS
DATA
DECAY
ELECTRON-POSITRON INTERACTIONS
ELEMENTARY PARTICLES
EXPERIMENTAL DATA
FERMIONS
HADRONS
INFORMATION
INTERACTIONS
LEPTON-LEPTON INTERACTIONS
LEPTONIC DECAY
LEPTONS
MASS
MASSLESS PARTICLES
MESON RESONANCES
MESONS
MUONS
NEUTRAL CURRENTS
NUMERICAL DATA
PARTICLE DECAY
PARTICLE INTERACTIONS
PHOTONS
PIONS
PSEUDOSCALAR MESONS
RADIATIVE DECAY
RESONANCE PARTICLES
STORAGE RINGS
SYMMETRY
UPSILON RESONANCES
WEAK HADRONIC DECAY
WEAK INTERACTIONS
WEAK NEUTRAL CURRENTS
WEAK PARTICLE DECAY