Form Factors in D Meson Decays
نویسنده
چکیده
We study the dΓ/dq spectra and the branching fractions of the D meson exclusive semileptonic decays with the lepton mass effects into consideration. We investigate their sensitivity to form factor models, and find that the decays to a pseudoscalar meson and a lepton pair are sensitive to the property of the form factor F1(q ), and those to a vector meson and a lepton pair to the form factor A1(q ). We also analyze the experimental results of the branching fractions B(D0 → K(or π) π) and B(D0 → K(or π) eν), and show that it is implied that F1(q) is of dipole type, instead of simple pole type which is commonly assumed. PACS codes: 13.20.Fc, 13.20.-v, 13.25.Ft, 14.40.Lb
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