Publications by authors named "Atsushi Hosaka"
A recent analysis by the LHCb Collaboration suggests the existence of three narrow pentaquarklike states-the P_{c}(4312), P_{c}(4440), and P_{c}(4457)-instead of just one in the previous analysis [the P_{c}(4450)]. The closeness of the P_{c}(4312) to the D[over ¯]Σ_{c} threshold and the P_{c}(4440) and P_{c}(4457) to the D[over ¯]^{*}Σ_{c} threshold suggests a molecular interpretation of these resonances. We show that these three pentaquarklike resonances can be naturally accommodated in a contact-range effective field theory description that incorporates heavy-quark spin symmetry.
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- The study presents a method using a surface plasmon resonance (SPR) biosensor to assess how effectively different inhibitors prevent the breakdown of collagen IV by the enzyme cathepsin B.
- SPR signal changes showed that higher concentrations of inhibitors led to decreased enzyme activity, with a specific order of effectiveness for each inhibitor.
- The findings indicate that CA074 and Z-Phe-Phe-FMK primarily inhibit exopeptidase activity, while leupeptin is a stronger inhibitor of endopeptidase activity in cathepsin B.
We study s-wave scattering of a hadron and a Nambu-Goldstone boson induced by the model-independent low energy interaction in the flavor SU(3) symmetric limit. Establishing the general structure of the interaction based on group theoretical arguments, we find that the interaction in the exotic channels are in most cases repulsive, and that for possible attractive channels the coupling strengths are weak and uniquely given independent of channel. Solving the scattering problem, we show that the attraction in the exotic channels is not strong enough to generate a bound state.
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