Published June 1993
| Version v1
Report
Recent physics results from BES
Description
The BES has made a precision γ mass measurement by careful e+e- energy scan near γ pair production threshold. The mass value obtained from eμ, eπ and (μπ, μμ, ππ) topologies combined together is Mγ = 1776.9 ± 0.3 ± 0.2 MeV. About 9 x 106 J/ψ events and 3.5pb-1Ds data at √s = 4.03 Gev have been accumulated. The preliminary results are presented and the careful physics analysis is underway. (author)
Additional details
Publishing Information
- Imprint Title
- Proceedings of international workshop on B-factories: accelerators and experiments (BFWS92)
- Imprint Pagination
- 435 p.
- Journal Page Range
- p. 381-385.
- Report number
- KEK-PROC--93-7
Conference
- Title
- international workshop on B-factories (accelerators and experiments).
- Acronym
- BFWS92
- Dates
- 17-20 Nov 1992.
- Place
- Tsukuba, Ibaraki (Japan).
INIS
- Country of Publication
- Japan
- Country of Input or Organization
- Japan
- INIS RN
- 25032416
- Subject category
- S72: PHYSICS OF ELEMENTARY PARTICLES AND FIELDS;
- Resource subtype / Literary indicator
- Conference
- Descriptors DEI
- CROSS SECTIONS; GEV RANGE 01-10; MASS; PARTICLE INTERACTIONS; PARTICLE PRODUCTION; TAU PARTICLES; THRESHOLD ENERGY
- Descriptors DEC
- ELEMENTARY PARTICLES; ENERGY; ENERGY RANGE; FERMIONS; GEV RANGE; HEAVY LEPTONS; INTERACTIONS; LEPTONS