Some electromagnetic properties of charmed mesons
Journal Article
·
· Phys. Rev., D; (United States)
We calculate the D/sup +/-D/sup 0/ electromagnetic mass difference assuming pole dominance of the form factors. The tadpole, Born-term, and first-intermediate-state contributions, when treated within SU(4) symmetry, imply that m/sub D/ - m/sub D/ = 12.2 MeV. Since, in exact SU(4), the calculated charmed-meson production cross section in e/sup +/e/sup -/ annihilation saturates the observed total cross section, contrary to experiment, a simple SU(4) -symmetry-breaking scheme has been introduced. Using this scheme it is estimated that in the c.m. energy range 4.2--4.6 GeV, the total charmed-meson production cross section (DD-bar, DD-bar* + D-barD*, D*D-bar*, FF-bar, FF-bar* + F-barF*, F*F-bar*) rises from 3.8 to 6.9 nb. Also, the estimates of the D/sup +/-D/sup 0/ mass difference is lowered to 5.8 MeV.
- Research Organization:
- Theoretical Physics Institute, Department of Physics, University of Alberta, Edmonton, Alberta, Canada
- OSTI ID:
- 5297480
- Journal Information:
- Phys. Rev., D; (United States), Journal Name: Phys. Rev., D; (United States) Vol. 16:5; ISSN PRVDA
- Country of Publication:
- United States
- Language:
- English
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Related Subjects
645203* -- High Energy Physics-- Particle Interactions & Properties-Theoretical-- Weak Interactions & Properties
72 PHYSICS OF ELEMENTARY PARTICLES AND FIELDS
ANNIHILATION
BASIC INTERACTIONS
BOSONS
CHARM PARTICLES
COUPLING CONSTANTS
CROSS SECTIONS
ELECTROMAGNETIC FORM FACTORS
ELECTROMAGNETIC INTERACTIONS
ELECTRON-POSITRON INTERACTIONS
ELEMENTARY PARTICLES
ENERGY RANGE
FORM FACTORS
GEV RANGE
GEV RANGE 01-10
HADRONS
INTERACTIONS
LEPTON-LEPTON INTERACTIONS
LIE GROUPS
MASS DIFFERENCE
MESON RESONANCES
MESONS
PARTICLE INTERACTIONS
PARTICLE PROPERTIES
POSTULATED PARTICLES
RESONANCE PARTICLES
SU GROUPS
SU-4 GROUPS
SYMMETRY BREAKING
SYMMETRY GROUPS
TOTAL CROSS SECTIONS
VECTOR MESONS
72 PHYSICS OF ELEMENTARY PARTICLES AND FIELDS
ANNIHILATION
BASIC INTERACTIONS
BOSONS
CHARM PARTICLES
COUPLING CONSTANTS
CROSS SECTIONS
ELECTROMAGNETIC FORM FACTORS
ELECTROMAGNETIC INTERACTIONS
ELECTRON-POSITRON INTERACTIONS
ELEMENTARY PARTICLES
ENERGY RANGE
FORM FACTORS
GEV RANGE
GEV RANGE 01-10
HADRONS
INTERACTIONS
LEPTON-LEPTON INTERACTIONS
LIE GROUPS
MASS DIFFERENCE
MESON RESONANCES
MESONS
PARTICLE INTERACTIONS
PARTICLE PROPERTIES
POSTULATED PARTICLES
RESONANCE PARTICLES
SU GROUPS
SU-4 GROUPS
SYMMETRY BREAKING
SYMMETRY GROUPS
TOTAL CROSS SECTIONS
VECTOR MESONS