CO evidence for anomalous lepton production, and d. limits on inclusive muon production. II. SEARCH FOR NONLEPTONIC DECAYS OF CHARMED MESONS A few months ago we published a search for nonleptonic decays of charmed mesonso
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چکیده
This morning Roy Schwitters reported several indications thainew particles are being produced at center-of-mass energies (EC, m0 ) above 4 TV0 Then Gerry Abrams told us that a large fraction of #’ decays are unaccounted for. Now we will attempt to tie together a few of these loose ends and conclude this trilogy with a report on searches for and discoveries of new particles. Due to limitations of time the emphasis will have to be on the discoveries.
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Final-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...
متن کاملA Review of Hadronic and Rare B Decays
We review recent experimental results onB meson decays. These include measurements of the inclusive production of charmed and non-charmed mesons and baryons, the reconstruction of a large number of exclusive hadronic final states with charmed mesons, the search for exclusive hadronic final states without charmed mesons, and the first observation of the decay B → Kγ which is described by an elec...
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...
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Results on charmed meson production and decay are presented from the Mark III at SPEAR. FE’ sssociated production is observed allowing a direct measurement of the F’mass. A search for the decay D+ + r+u,, in the recoil of hadronically tagged D* decays provides a stringent limit on the pseudoscalar decay constant jo . New results on DoDo mixing from semileptonic Do decays and evidence for a nonr...
متن کاملQuark and pole models of nonleptonic decays of charmed baryons.
Quark and pole models of nonleptonic decays of charmed baryons are analysed from the point of view of their symmetry properties. The symmetry structure of the parity conserving amplitudes that corresponds to the contribution of the ground-state intermediate baryons is shown to differ from the one hitherto employed in the symmetry approach. It is pointed out that the ”subtraction” of sea quark e...
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