High resolution chambers - the US program

Conference · Fri Jan 01 00:00:00 EST 1982 · AIP Conf. Proc.; (United States)

OSTI ID:5602970

Bingham, H H

Recent experiments to measure charmed particle lifetimes are reviewed. The preliminary results of these experiments agree on a D/sup + -/ lifetime of 7.6/sub -1.5//sup +3.6/ x 10/sup -13/sec. The D/sup 0/ lifetime remains uncertain: the world average is 2.7/sub -0.4//sup +0.8/ x 10/sup -13/sec, but excluding at least two apparently good D/sup 0/ with long flight times and excluding also some early emulsion experiments with apparent bias against long D/sup 0/ flight times. Preliminary average lifetimes are 2.3/sub -0.7//sup +1.1/ x 10/sup -13/sec for ..lambda../sub c//sup +/ and 1.8/sub -0.6//sup +1.2/ x 10/sup -13/sec for F/sup + -/. Some developments under way to further improve vertex detectors are discussed.

• Research Organization: Univ. of California, Berkeley
• OSTI ID: 5602970
• Report Number(s): CONF-810986-; TRN: 85-013243
• Journal Information: AIP Conf. Proc.; (United States), Vol. 81; Conference: Meeting of the division of particles and fields of the American Physical Society, Santa Cruz, CA, USA, 9 Sep 1981
• Country of Publication: United States
• Language: English

Related Subjects

72 PHYSICS OF ELEMENTARY PARTICLES AND FIELDS
46 INSTRUMENTATION RELATED TO NUCLEAR SCIENCE AND TECHNOLOGY
D MESONS
SEMILEPTONIC DECAY
F MESONS
LAMBDA PARTICLES
MULTIPARTICLE SPECTROMETERS
EXPERIMENTAL DATA
NUCLEAR EMULSIONS
PARTICLE WIDTHS
BARYONS
BOSONS
CHARM PARTICLES
DATA
DECAY
ELEMENTARY PARTICLES
FERMIONS
HADRONS
HYPERONS
INFORMATION
MEASURING INSTRUMENTS
MESONS
NUMERICAL DATA
PARTICLE DECAY
PARTICLE PROPERTIES
PSEUDOSCALAR MESONS
SPECTROMETERS
STRANGE PARTICLES
WEAK PARTICLE DECAY
645102* - High Energy Physics- Particle Interactions & Properties-Experimental- Weak Interactions & Properties
440104 - Radiation Instrumentation- High Energy Physics Instrumentation