Published 1993
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Light quark masses from exclusive tau decays
Description
A method of indirect measurement of the light quark running mass m-circumflex = (md + mu)/2 is elaborated in detail. It is based on measuring 1%-level azimuthal angular asymmetries in the decay τ→ντ + 3π. The latter are then used in QCD sum rules to obtain experimental lower bounds for m-circumflex. For a sample of 2.5 * 105 τ→ντ + 3π decays free of background, the resulting statistical error in the bound for m-circumflex is estimated to be 1 MeV, i.e., comparable to the systematic error due to the use of QCD sum rules. (authors) 22 refs., 7 figs., 1 tab
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Additional details
Additional titles
- Subtitle (English)
- An experimental proposal
Publishing Information
- Imprint Pagination
- 25 p.
- Report number
- IPNO-TH--93-38
Conference
- Title
- 3. Workshop on the tau charm factory.
- Dates
- 1-6 Jun 1993.
- Place
- Marbella (Spain).
INIS
- Country of Publication
- France
- Country of Input or Organization
- France
- INIS RN
- 25075654
- Subject category
- S72: PHYSICS OF ELEMENTARY PARTICLES AND FIELDS; S72: PHYSICS OF ELEMENTARY PARTICLES AND FIELDS;
- Resource subtype / Literary indicator
- Conference
- Descriptors DEI
- ANGULAR DISTRIBUTION; EXCLUSIVE INTERACTIONS; EXPERIMENT PLANNING; MASS; QUANTUM CHROMODYNAMICS; QUARKS; SUM RULES; TAU PARTICLES; WEAK HADRONIC DECAY
- Descriptors DEC
- DECAY; DISTRIBUTION; ELEMENTARY PARTICLES; EQUATIONS; FERMIONS; FIELD THEORIES; HEAVY LEPTONS; INTERACTIONS; LEPTONS; PARTICLE DECAY; PARTICLE INTERACTIONS; PLANNING; POSTULATED PARTICLES; QUANTUM FIELD THEORY; WEAK PARTICLE DECAY