Roper, Jonathan (ed.): Dictionaries as Sources of Folklore Data. Fellows Communications 321. Helsinki: Academia Scientiarum Fennica, 2020, 246 p.

We consider decays of the lowest-lying positive parity (56-plet) and negative parity (70-plet) excited baryons. For the 70-plet, we include both single-quark and two-quark decay operators, and find, somewhat mysteriously, that the twoquark operators are not phenomenologically important. Studies of decays 70 → ∆+γ may strengthen or vitiate this observation. For the 56-plet decays, now using only...

We study the pion-nucleon P33 and P11 scattering, where the Delta and the Roper resonances are seen, respectively. We use the Lippmann-Schwinger equation extended to couple to a one-body state, and investigate nature of these resonances by taking and omitting a one-baryon state into account. We see validity and puzzle of the standard quark model interpretation, for the Delta and the Roper reson...

Mobile computing devices together with an ever growing land-based and wireless communication network infrastructure are the existing technical prerequisites for continuous access to networked services. This relieves users from being bound to their desktop computers and lets them spread out into the world. But using the diierent mobile facilities often requires a lot of special concern and there...