Participation in the ARGUS experiment at the DORIS collider at DESY, Hamburg, Germany
Progress reported for 1985 includes publishing final results for investigation of F mesons. Particle decays were sought including a gamma line at 9.46 GeV. One such decay was Upsilon(1S)..--> gamma..H/sup 0/. A search for fractionally charged particles is reported. The muon pair branching ratio was determined for decays of the Upsilon(2S). Six anti-deuterons were seen in a data sample of over 720,000 electron-positron annihilation events. A clear D/sup 0/ signal was seen in the K/sup +/K/sup -/ channel. Results were obtained for the radiative transitions from the Upsilon(2S) to the 1/sup 3/P states of the banti-b system. Fifteen events were also seen which were interpreted to be the color suppressed decay of a B meson to J/psi. A new upper limit was set for the mass of the tau neutrino. A CAMAC booster was used to reduce dead time in the experiment. New preamplifiers raised the vertex drift chambers enough above the electromagnetic noise of the storage ring that it was no longer a problem. The performance of the inner compensation coils, storage ring, and main drift chamber are reported, as well as the time of flight, shower, and muon counters. (LEW)
- Research Organization:
- South Carolina Univ., Columbia (USA). Dept. of Physics and Astronomy
- DOE Contract Number:
- AS09-80ER10690
- OSTI ID:
- 5796584
- Report Number(s):
- DOE/ER/10690-6; ON: DE86009517
- Country of Publication:
- United States
- Language:
- English
Similar Records
Electron positron annihilation from 3 to 11 GeV. ARGUS progress report 1984
Participation in the ARGUS experiment at the DORIS Collider at Desy, Hamburg, Germany and participation in the AMY experiment at the TRISTAN Collider in Tsukuba, Japan: 1986 progress report
Related Subjects
DORIS STORAGE RING
RESEARCH PROGRAMS
ANNIHILATION
B MESONS
D MESONS
DEAD TIME
ELECTRON-POSITRON INTERACTIONS
F MESONS
PARTICLE DECAY
PREAMPLIFIERS
UPSILON RESONANCES
AMPLIFIERS
BASIC INTERACTIONS
BOSONS
CHARM PARTICLES
CHARMED MESONS
DECAY
ELECTROMAGNETIC INTERACTIONS
ELECTRONIC EQUIPMENT
ELEMENTARY PARTICLES
EQUIPMENT
HADRONS
INTERACTIONS
LEPTON-LEPTON INTERACTIONS
MESON RESONANCES
MESONS
PARTICLE INTERACTIONS
PSEUDOSCALAR MESONS
RESONANCE PARTICLES
STORAGE RINGS
STRANGE PARTICLES
TIMING PROPERTIES
645101* - High Energy Physics- Particle Interactions & Properties-Experimental- Electromagnetic Interactions & Properties