The stability of strange pentaquarks uudd s ̄ is studied in a constituent quark model based
on a flavor–spin hyperfine interaction between quarks. With this interaction model, which …

We investigate the photoproduction of the Θ+(1540) on a nucleon (γ n→ K− Θ+, γ p→ K 0
Θ+) and the pion-induced Θ+ production reaction on the proton (π− p→ K− Θ+). The total …

The newly observed Θ+ resonance is believed to be a pentaquark with the constituent
quarks uudd s. There are a few options for the constituent quark structure. Some advocate …

Dynamical calculations are performed for all isomultiplets of the flavour antidecuplet to
which the newly discovered pentaquark Θ+ belongs. The framework is a constituent quark …

Following Rosner [hep-ph/0312269], we consider B-decay production channels for the
exotic I= 0 and I= 3/2 pentaquarks that have been recently reported. We also discuss new …

Fermilab experiment E791 studied weak decays of D+, D_s, and D^ 0 mesons produced in
collisions of 500 GeV/c negative pions with Pt and C targets. The experiment collected over …

We report the results of a blind search for flavor-changing neutral current (FCNC), lepton-
flavor violating, and lepton-number violating decays of D+, Ds+, and D0 mesons (and their …

The Constituent Quark Model has provided a remarkable description of the experimentally
observed hadron spectrum but still has no firm theoretical basis. Attempts to provide a QCD …

The excited states of the nucleon have been studied in a large number of formation and
production experiments. The conventional (ie, Breit-Wigner) masses, pole positions, widths …