Studies of particle interactions in bubble chamber, spark chambers and counter experiments. Annual progress report
During the past six years we have carried out and planned experiments which predominantly studied the production and decay of particles containing charmed quarks. A series of photoproduction and neutron production experiments started with the very early observation of the production of J/psi by neutrons and by photons at Fermilab. From subsequent experiments using these neutral beams and the basic detecting system, we have reported results on the photoproduction of the ..lambda../sub c/ charmed baryon and the D and D* charmed mesons. More recent runs are studying the high energy photoproduction of vector mesons including the psi'. The present experiment in this sequence is using neutrons to produce a large number of D mesons. Another series of experiments at Fermilab set out to study the hadronic production of charmed mesons. The Chicago Cyclotron facility was modified with a detector sensitive to various possible production mechanisms. The experiments were a success; clean signals of D mesons were observed to be produced by pions, and also the production of chi/sub c/ with the subsequent decay via a ..gamma..-ray to psi was observed. The charmonium experiments run this year have better photon resolution for measuring the decays of chi/sub c/ to psi. We are part of a collaboration which is working on the Collider Detector Facility for Fermilab. The CDF at Fermilab is a possible source of (weak) intermediate vector bosons from the collisions of protons and anti-protons. Our responsibilities in the CDF include both the construction of the muon detector and the designing, planning, and testing of the FASTBUS electronics. The second part of our weak interaction program is the Neutrino Oscillation experiment which is now under construction at Brookhaven.
- Research Organization:
- Illinois Univ., Urbana (USA). Dept. of Physics
- DOE Contract Number:
- AC02-76ER01195
- OSTI ID:
- 5736785
- Report Number(s):
- DOE/ER/01195-487; COO-1195-487; ON: DE83017500
- Country of Publication:
- United States
- Language:
- English
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Related Subjects
HIGH ENERGY PHYSICS
RESEARCH PROGRAMS
CHARM PARTICLES
CHARMONIUM
CHI RESONANCES
COLLIDING BEAMS
D RESONANCES
FERMILAB ACCELERATOR
LAMBDA PARTICLES
NEUTRONS
OSCILLATIONS
PARTICLE DECAY
PARTICLE PRODUCTION
PSI-3105 RESONANCES
ACCELERATORS
BARYONS
BEAMS
BOSONS
CHARMED MESON RESONANCES
CYCLIC ACCELERATORS
DECAY
ELEMENTARY PARTICLES
FERMIONS
HADRONS
HYPERONS
MESON RESONANCES
MESONS
NUCLEONS
PHYSICS
POSTULATED PARTICLES
PSI RESONANCES
QUARKONIUM
RESONANCE PARTICLES
STRANGE PARTICLES
SYNCHROTRONS
VECTOR MESONS
645100* - High Energy Physics- Particle Interactions & Properties-Experimental