Doubly Cabibbo-suppressed decays of antitriplet charmed baryons
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...
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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...
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For over two decades, the D → Kπ has served as a workhorse in charm and beauty physics. However, there is general interest in measuring all the D → Kπ branching fractions. In particular, while it is often assumed that B(D → K Sπ) = B(D → K Lπ), interference between D → Kπ and D → K0π can break this equality. Although this asymmetry is expected, measuring it has alluded experiments because of th...
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Cabibbo-allowed nonleptonic weak decays of charmed baryons Λ + c , Ξ 0A c , Ξ +A c and Ω 0 c into an octet baryon and a pseudoscalar meson are analyzed. The nonfactorizable contributions are evaluated under pole approximation, and it turns out that the s-wave amplitudes are dominated by the low-lying 2 − resonances, while pwave ones governed by the ground-state 2 + poles. The MIT bag model is e...
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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ژورنال
عنوان ژورنال: Journal of High Energy Physics
سال: 2020
ISSN: 1029-8479
DOI: 10.1007/jhep11(2020)126