Weak decays of charmed and B mesons

Thesis/Dissertation · Tue Jan 01 04:00:00 EST 1991

OSTI ID:5260776

Smith, T P

The author calculates the semileptonic decays of charmed and bottom mesons and the nonleptonic decays of charmed mesons in the standard model starting from the assumption that they are bound states of a quark and an antiquark. The quark or the antiquark is assumed to have a momentum distribution given by the momentum space wavefunction of the bound state. He considers two different examples of momentum space wavefunctions, one given by a relativistic-harmonic-oscillator eigenfunction, and the other derived by Isgur et al. for a coulomb-plus-linear potential. The final results are practically the same in both cases. For semileptonic decays he has calculated the total decay-rates, the differential decay-rates with respect to the energy and angle of the emitted electron, and the form factors, for decays into pseudoscalar mesons, and into vector mesons with longitudinal or transverse polarizations. The results are consistent with recent experimental data. For nonleptonic decays the calculations include contributions from four diagrams, the color-enhanced and color-suppressed spectator diagrams and the annihilation and exchange hadronization diagrams. He has calculated the total decay-rates for decays into two pseudoscalar mesons and into one pseudoscalar meson and one vector meson. The results are consistent with recent experimental data.

• Research Organization: Lowell Univ., MA (United States)
• OSTI ID: 5260776
• Country of Publication: United States
• Language: English

Related Subjects

662350* -- Decays of Mesons-- (1992-)
72 PHYSICS OF ELEMENTARY PARTICLES AND FIELDS
ANNIHILATION
B MESONS
BASIC INTERACTIONS
BEAUTY PARTICLES
BOSONS
BOUND STATE
BRANCHING RATIO
CHARM PARTICLES
CHARMED MESONS
DECAY
ELECTROMAGNETIC INTERACTIONS
ELEMENTARY PARTICLES
FERMIONS
FORM FACTORS
FUNCTIONS
HADRONS
INTERACTIONS
MATHEMATICAL MODELS
MESONS
PARTICLE DECAY
PARTICLE INTERACTIONS
PARTICLE MODELS
PARTICLE PROPERTIES
POSTULATED PARTICLES
PSEUDOSCALAR MESONS
QUARKS
SEMILEPTONIC DECAY
STANDARD MODEL
UNIFIED GAUGE MODELS
VECTOR MESONS
WAVE FUNCTIONS
WEAK HADRONIC DECAY
WEAK PARTICLE DECAY