Light-cone quark model predictions for radiative meson decays
نویسندگان
چکیده
منابع مشابه
Tau Radiative Decays in the Light Front Quark Model
We study the decays of τ → ντPγ (P = π , K) in the light front quark model. We calculate the form factors and use them to evaluate the decay widths. We find that, in the standard model, the decay widths are 1.62 × 10 (3.86 × 10) Γτ−→ντπ− and 1.91 × 10 (5.38 × 10) Γτ−→ντK− with the cuts of Eγ = 50 (400) MeV and t0 = 800 (1200) MeV for τ → ντπγ and τ → ντKγ, respectively. We also show that with i...
متن کاملA Constituent Quark-Meson Model for Heavy Meson Decays
I describe a model for heavy meson decays based on an effective quark-meson lagrangian. I consider the heavy mesons S with spin and parity J = (1, 0), H with J = (1, 0) and T μ with J = (2, 1), i.e. S and P wave heavy-light mesons. The model is constrained by the known symmetries of QCD in the mQ → ∞ for the heavy quarks and chiral symmetry in the light quark sector. Using a very limited number...
متن کاملCharm meson radiative decays
Combining heavy quark effective theory and the chiral Lagrangian approach we investigate D meson radiative decays. First, we reanalyse D∗ → Dγ decays using heavy quark spin symmetry, chiral symmetry Lagrangian, but including also the light vector mesons. Then, we calculate branching ratios D → V γ. We make some comments on the Cabbibo suppressed decays D → ρ/ωγ and the branching ratios of D → P...
متن کاملRADIATIVE WEAK DECAYS OF B c MESON IN LIGHT CONE QCD
We investigate the radiative B c → ρ + γ and B c → K * + γ decays in the standard model. The transition form factors are calculated in the framework of the light cone QCD sum rules method. We estimate the branching ratios of the B c → ρ + γ and B c → K * + γ decays.
متن کاملMeson Decays In A Quark Model
A recent model of hadron states is extended to include meson decays. We find that the overall success of the model is quite good. Possible improvements to the model are suggested.
متن کاملذخیره در منابع من
با ذخیره ی این منبع در منابع من، دسترسی به آن را برای استفاده های بعدی آسان تر کنید
ژورنال
عنوان ژورنال: Nuclear Physics A
سال: 1997
ISSN: 0375-9474
DOI: 10.1016/s0375-9474(97)00052-3