1,969 research outputs found
Non-factorizable contribution in nonleptonic weak interactions of K mesons
Two pion decays of K mesons, K_L-K_S mass difference, two photon and the
Dalitz decays of K_L are studied systematically by assuming that their
amplitude is given by a sum of factorizable and non-factorizable ones. The
former is estimated by using a naive factorization while the latter is assumed
to be dominated by dynamical contributions of various hadron states.Comment: 23 pages,1 figur
The BABAR Resonance as a Four-quark Meson
By assigning the narrow scalar resonance (which has been recently observed at
the B-factories) to one of iso-triplet four-quark mesons containing a charm
quark, two body decays of the four-quark mesons are studied. It is predicted
that some of them can be observed as narrow resonances.Comment: 4 pages, 0 figures, HADRON2003, Revte
Non-factorizable contribution in B decays
Two body decays of B mesons are studied by decomposing their amplitude into a
sum of factorizable and non-factorizable ones. The former is estimated by using
a naive factorization while the latter is assumed to be dominated by dynamical
contributions of various hadron states and is calculated by using a hard pion
(or kaon) technique in the infinite momentum frame. Possible roles of the
non-factorizable contributions are discussed by comparing the result with
experiments.Comment: 15 page
D_{s0}^+(2317) as an iso-triplet four-quark meson
Although assigning D_{s0}^+(2317) to the I_3=0 component of iso-triplet
four-quark mesons is favored by experiments, its neutral and doubly charged
partners have not yet been observed. It is discussed why they were not observed
in inclusive e^+e^- annihilation experiments and that they can be observed in B
decays.Comment: 3 pages, 5 figures, invited talk at QNP06, the 4th Int. Conf. on
Quarks and Nuclear Physics, June 5 - 10, 2006, Madri
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