Two-body Cabibbo-suppressed charmed meson decays
نویسندگان
چکیده
منابع مشابه
U-Spin Symmetry in Doubly Cabibbo-Suppressed Charmed Meson Decays
We prove a U-spin amplitude triangle relation among doubly Cabibbosuppressed (DCS) charmed meson decays, D → Kπ, D → Kπ and D s → KK, congruent to an isospin relation among corresponding Cabibbo-favored (CF) decays. U-spin breaking in relative phases between CF and DCS amplitudes affects time-dependent studies of D −D0 mixing. Comparison of final state phase patterns in DCS and CF amplitude tri...
متن کاملTwo-body Cabibbo-suppressed decays of charmed baryons into vector mesons and into photons.
The heavy quark effective theory and the factorization approximation are used to treat the Cabibbo-suppressed decays of charmed baryons to vector mesons, ΛC → pρ, pω, Ξ C → Σφ,Σρ,Σω and Ξ0C → Λφ,Λρ,Λω. The input from two recent experimental results on ΛC decays allows the estimation of the branching ratios for these modes, which turn out to be between 10 and 10. The long distance contribution o...
متن کاملFinal-state Phases in Doubly-cabibbo-suppressed Charmed Meson Nonleptonic Decays
Cabibbo-favored nonleptonic charmed particle decays exhibit large final-state phase differences in K̄π and K̄∗π but not K̄ρ channels. It is of interest to know the corresponding pattern of final-state phases in doubly-Cabibbosuppressed decays, governed by the c → dus̄ subprocess. An experimental program is outlined for determining such phases via measurements of rates for D → K∗π and K(ρ, ω, φ) cha...
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We investigate Cabibbo suppressed D, D andD s radiative weak decays in order to find the best mode to test c → uγ decay. Combining heavy quark effective theory and the chiral Lagrangian approach we determine the decay widths. We calculate Γ(D → ρ/ωγ)/Γ(D → K̄∗0γ) previously proposed to search for possible New Physics. However, we notice that there are large, unknown, corrections within the Stand...
متن کاملNonleptonic two-body charmed meson decays in an effective model for their semileptonic decays
We analyze D → PV , D → PP and D → V V decays within a model developed to describe the semileptonic decays D → V lνl and D → P lνl. This model combines the heavy quark effective Lagrangian and chiral perturbation theory. We determine amplitudes for decays in which the direct weak annihilation of the initial D meson is absent or negligible, and in which the final state interactions are small. Th...
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ژورنال
عنوان ژورنال: Physical Review D
سال: 2003
ISSN: 0556-2821,1089-4918
DOI: 10.1103/physrevd.67.014001