Published July 28, 1980
| Version v1
Journal article
Observation of the UPSILON''' at the Cornell electron-storage ring
Creators
- 1. State University of New York at Stony Brook, Stony Brook, New York 11794
Description
During an energy scan at the Cornell Electron Storage Ring, with use of the Columbia University-Stony Brook NaI detector, an enhancement in sigma(e+e-→hadrons) is observed at center-of-mass energy approx.10.55 GeV. The mass and leptonic width of this state (UPSILON''') suggest that it is the 4 3S1 bound state of the b quark and its anitquark. After applying to the data a cut in a (pseudo) thrust variable, the natural width is measured to be GAMMA=12.6 +- 6.0 MeV, indicating that the UPSILON''' is above the threshold for BB-bar production
Additional details
Publishing Information
- Journal Title
- Phys. Rev. Lett.
- Journal Volume
- 45
- Journal Issue
- 4
- Series
- Phys. Rev. Lett.
- Journal Page Range
- 222-225
- ISSN
- 0031-9007
INIS
- Country of Publication
- United States
- Country of Input or Organization
- United States
- INIS RN
- 12572696
- Subject category
- S72: PHYSICS OF ELEMENTARY PARTICLES AND FIELDS;
- Descriptors DEI
- ANGULAR DISTRIBUTION; ANNIHILATION; BHABHA SCATTERING; BOUND STATE; CESR STORAGE RING; CROSS SECTIONS; ELECTRON-POSITRON INTERACTIONS; GEV RANGE 10-100; LEPTONIC DECAY; MASS DIFFERENCE; PARTICLE PRODUCTION; QUARKONIUM; RADIATIVE CORRECTIONS; UPSILON RESONANCES
- Descriptors DEC
- BASIC INTERACTIONS; BOSONS; CORRECTIONS; DECAY; DISTRIBUTION; ELASTIC SCATTERING; ELEMENTARY PARTICLES; ENERGY RANGE; GEV RANGE; HADRONS; INTERACTIONS; LEPTON-LEPTON INTERACTIONS; MESON RESONANCES; MESONS; PARTICLE DECAY; PARTICLE INTERACTIONS; PARTICLE PROPERTIES; RESONANCE PARTICLES; SCATTERING; STORAGE RINGS; VECTOR MESONS; WEAK INTERACTIONS; WEAK PARTICLE DECAY