Published 1982
| Version v1
Book
Recent results from Mark II at SPEAR and PEP
Creators
- 1. University of California, Berkeley, CA (USA)
- 2. Stanford Linear Accelerator Center, Stanford University, CA (USA)
Description
Three results are presented: (1) The semi-leptonic branching ratio of the νsub(c) has been measured at SPEAR to be B(ν+sub(c) → e+X) = (4.5+-1.7)%. (2) Properties of tau-pair production have been measured at PEP at √S = 29 GeV: σsup(tau tau)/σsup(QED) = 0.97+-0.05+-0.06; the forward-backward asymmetry is Asub(tau tau) = (-3.5+-5.0)%; inclusive branching ratios are B(tau → 1 Prong) = (86+-4)%, B(tau → 3 Prongs) = (14+-4)%, B(tau → 5 Prongs) < 0.6% (95% C.L.). (3) A search has been performed for the pair production of charged, point like, spin 0 particles. The existence of such particles can be ruled at a 90% confidence level for 3 < M < 10 GeV/c2 and branching ratio into hadrons < 90%
Additional details
Publishing Information
- Publisher
- Editions Frontieres.
- Imprint Place
- Gif-sur-Yvette (France)
- ISBN
- 2-86332-016-5
- Imprint Title
- Quarks, leptons and supersymmetry
- Imprint Pagination
- 650 p.
- Journal Page Range
- v. 1 p. 145-158.
Conference
- Title
- 17. Rencontre de Moriond.
- Dates
- 14 - 26 Mar 1982.
- Place
- Les Arcs (France).
INIS
- Country of Publication
- France
- Country of Input or Organization
- France
- INIS RN
- 14753388
- Subject category
- S72: PHYSICS OF ELEMENTARY PARTICLES AND FIELDS;
- Resource subtype / Literary indicator
- Conference, Numerical Data
- Descriptors DEI
- ANGULAR DISTRIBUTION; CROSS SECTIONS; ELECTRON-POSITRON INTERACTIONS; ELECTRONS; EXPERIMENTAL DATA; HIGGS BOSONS; LAMBDA-2250 RESONANCES; MULTIPLICITY; PAIR PRODUCTION; SEMILEPTONIC DECAY; TAU PARTICLES; TRANSVERSE MOMENTUM; WEAK PARTICLE DECAY
- Descriptors DEC
- BARYON RESONANCES; BARYONS; BOSONS; CHARMED BARYON RESONANCES; DATA; DECAY; DISTRIBUTION; ELEMENTARY PARTICLES; FERMIONS; HADRONS; HEAVY LEPTONS; INFORMATION; INTERACTIONS; INTERMEDIATE BOSONS; LEPTON-LEPTON INTERACTIONS; LEPTONS; LINEAR MOMENTUM; NUMERICAL DATA; PARTICLE DECAY; PARTICLE INTERACTIONS; PARTICLE PRODUCTION; POSTULATED PARTICLES; RESONANCE PARTICLES