منابع مشابه
Comment on D ∗ s → D s π 0 Decay
We calculate the rate for D s → Dsπ decay using Chiral Perturbation Theory. This isospin violating process results from π η mixing, and its amplitude is proportional to (md − mu)/ ( ms − (mu + md)/2 ) . Experimental information on the branching ratio for D s → Dsπ can provide insight into the pattern of SU(3) violation in radiative D decays.
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It has been suggested that the observed Ds −D 0 lifetime difference can be ‘understood’ as due to SU(3)F l breaking in the phase spaces for the exclusive D 0 channels ‘removing’ the need for weak annihilation. It is pointed out that several of the statements in this argument are misleading or even inconsistent with a state-of-the-art description of heavy flavour decays based on the operator pro...
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We present an implementation of a discourse parsing system for a lexicalized Tree-Ajoining Grammar for discourse, specifying the integration of sentence and discourse level processing. Our system is based on the assumption that the compositional aspects of semantics at the discourse-level parallel those at the sentence-level. This coupling is achieved by factoring away inferential semantics and...
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ژورنال
عنوان ژورنال: Repura
سال: 1954
ISSN: 0024-1008,2185-1352
DOI: 10.5025/hansen1930.23.6_331