Measurement of the hadronic cross sections above the. Upsilon. (4S) and B sup * production

Thesis/Dissertation · Mon Dec 31 23:00:00 EST 1990

OSTI ID:5317828

Cheu, E C

The author reports on measurements of the hadronic cross section above the {Upsilon}(4S) using the CLEO detector located in the CESR storage ring. The hadronic cross section just above the {Upsilon}(4S) due to b{bar b} quark pairs is composed of contributions from B{bar B}, B{bar B}{sup {asterisk}} and B{sup {asterisk}}{bar B}{sup {asterisk}} meson pairs. In this thesis he reports on the contribution of B{sup {asterisk}} meson production to the hadronic cross section. In the region above B{bar B}{sup {asterisk}} threshold but below B{sup {asterisk}}{bar B}{sup {asterisk}} threshold the maximal inclusive B{sup {asterisk}} cross section is 0.164 {plus minus} 0.023 {plus minus} 0.022 nb. The maximal B{sup {asterisk}} cross section has implications for the constructing accelerators designed to measure CP violation in the B meson system. He compares the measurement of the total hadronic cross section and the B{sup {asterisk}} components to predictions of non-relativistic potential models. He also reports on a new measurement of the B{sup {asterisk}}-B mass difference of 46.2 {plus minus} 0.3 {plus minus} 0.8 MeV/c{sup 2} which is consistent with a previous measurements.

• Research Organization: Cornell Univ., Ithaca, NY (United States)
• OSTI ID: 5317828
• Country of Publication: United States
• Language: English

Related Subjects

662310* -- Weak & Electromagnetic Interactions of Leptons-- (1992-)
662350 -- Decays of Mesons-- (1992-)
72 PHYSICS OF ELEMENTARY PARTICLES AND FIELDS
ACCELERATORS
BEAUTY MESONS
BEAUTY PARTICLES
BOSONS
BOTTOMONIUM
CESR STORAGE RING
CP INVARIANCE
CROSS SECTIONS
DECAY
ELECTRON-POSITRON INTERACTIONS
ELEMENTARY PARTICLES
FERMIONS
HADRONS
INTERACTIONS
INVARIANCE PRINCIPLES
LEPTON-LEPTON INTERACTIONS
MASS DIFFERENCE
MESONS
PARTICLE DECAY
PARTICLE INTERACTIONS
PARTICLE PRODUCTION
PARTICLE PROPERTIES
POSTULATED PARTICLES
QUARKONIUM
QUARKS
STORAGE RINGS
VECTOR MESONS
WEAK PARTICLE DECAY