Decay constants and radiative decays of heavy mesons in lightfront quark model
Abstract
We investigate the magnetic dipole decays V{yields}P{gamma} of various heavyflavored mesons such as (D,D*,D{sub s},D{sub s}*,{eta}{sub c},J/{psi}) and (B,B*,B{sub s},B{sub s}*,{eta}{sub b},{upsilon}) using the lightfront quark model constrained by the variational principle for the QCDmotivated effective Hamiltonian. The momentum dependent form factors F{sub VP}(q{sup 2}) for V{yields}P{gamma}* decays are obtained in the q{sup +}=0 frame and then analytically continued to the timelike region by changing q{sub perpendicular} to iq{sub perpendicular} in the form factors. The coupling constant g{sub VP{gamma}} for real photon case is then obtained in the limit as q{sup 2}{yields}0, i.e. g{sub VP{gamma}}=F{sub VP}(q{sup 2}=0). The weak decay constants of heavy pseudoscalar and vector mesons are also calculated. Our numerical results for the decay constants and radiative decay widths for the heavyflavored mesons are overall in good agreement with the available experimental data as well as other theoretical model calculations.
 Authors:
 Department of Physics, Teachers College, Kyungpook National University, Daegu, 702701 (Korea, Republic of)
 Publication Date:
 OSTI Identifier:
 21020253
 Resource Type:
 Journal Article
 Resource Relation:
 Journal Name: Physical Review. D, Particles Fields; Journal Volume: 75; Journal Issue: 7; Other Information: DOI: 10.1103/PhysRevD.75.073016; (c) 2007 The American Physical Society; Country of input: International Atomic Energy Agency (IAEA)
 Country of Publication:
 United States
 Language:
 English
 Subject:
 72 PHYSICS OF ELEMENTARY PARTICLES AND FIELDS; B MESONS; COUPLING CONSTANTS; D MESONS; D S MESONS; D*2010 MESONS; ELECTROMAGNETIC FORM FACTORS; ETA MESONS; FLAVOR MODEL; HADRONIC PARTICLE DECAY; HAMILTONIANS; J PSI3097 MESONS; MAGNETIC DIPOLES; PARTICLE WIDTHS; PHOTONS; QUANTUM CHROMODYNAMICS; QUARK MODEL; RADIATIVE DECAY; RESONANCE PARTICLES; VARIATIONAL METHODS
Citation Formats
Choi, HoMeoyng. Decay constants and radiative decays of heavy mesons in lightfront quark model. United States: N. p., 2007.
Web. doi:10.1103/PHYSREVD.75.073016.
Choi, HoMeoyng. Decay constants and radiative decays of heavy mesons in lightfront quark model. United States. doi:10.1103/PHYSREVD.75.073016.
Choi, HoMeoyng. Sun .
"Decay constants and radiative decays of heavy mesons in lightfront quark model". United States.
doi:10.1103/PHYSREVD.75.073016.
@article{osti_21020253,
title = {Decay constants and radiative decays of heavy mesons in lightfront quark model},
author = {Choi, HoMeoyng},
abstractNote = {We investigate the magnetic dipole decays V{yields}P{gamma} of various heavyflavored mesons such as (D,D*,D{sub s},D{sub s}*,{eta}{sub c},J/{psi}) and (B,B*,B{sub s},B{sub s}*,{eta}{sub b},{upsilon}) using the lightfront quark model constrained by the variational principle for the QCDmotivated effective Hamiltonian. The momentum dependent form factors F{sub VP}(q{sup 2}) for V{yields}P{gamma}* decays are obtained in the q{sup +}=0 frame and then analytically continued to the timelike region by changing q{sub perpendicular} to iq{sub perpendicular} in the form factors. The coupling constant g{sub VP{gamma}} for real photon case is then obtained in the limit as q{sup 2}{yields}0, i.e. g{sub VP{gamma}}=F{sub VP}(q{sup 2}=0). The weak decay constants of heavy pseudoscalar and vector mesons are also calculated. Our numerical results for the decay constants and radiative decay widths for the heavyflavored mesons are overall in good agreement with the available experimental data as well as other theoretical model calculations.},
doi = {10.1103/PHYSREVD.75.073016},
journal = {Physical Review. D, Particles Fields},
number = 7,
volume = 75,
place = {United States},
year = {Sun Apr 01 00:00:00 EDT 2007},
month = {Sun Apr 01 00:00:00 EDT 2007}
}

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