Parity-conserving and -violating response functions are computed for the inclusive electroexcitation of the N∗(1440) (Roper) resonance in nuclear matter modeled as a relativistic Fermi gas. Using various empirical parameterizations and theoretical models of the N −N∗(1440) transition form factors, the sensitivity of the response functions to details of the structure of the Roper resonance is in...

Parity-conserving and -violating response functions are computed for the inclusive electroexcitation of the N∗(1440) (Roper) resonance in nuclear matter modeled as a relativistic Fermi gas. Using various empirical parameterizations and theoretical models of the N −N∗(1440) transition form factors, the sensitivity of the response functions to details of the structure of the Roper resonance is in...

The generalized Roper-Suffridge extension operator in Banach spaces is introduced. We prove that this operator preserves the starlikeness on some domains in Banach spaces and does not preserve convexity in some cases. Furthermore, the growth theorem and covering theorem of the corresponding mappings are given. Some results of Roper and Suffridge and Graham et al. in Cn are extended to Banach sp...

We employ a continuum approach to the three valence-quark bound-state problem in relativistic quantum field theory to predict a range of properties of the proton's radial excitation and thereby unify them with those of numerous other hadrons. Our analysis indicates that the nucleon's first radial excitation is the Roper resonance. It consists of a core of three dressed quarks, which expresses i...

To the Editorial Committee of the BRITISH JOURNAL OF OPHTHALMOLOGY SiRs-In my recent article on the use of oxyphenonium as an atropine substitute (Roper-Hall, 1957) I stated that a previous atropine substitute, Lachesine, had been withdrawn from production. This was true at the date when the article was written in November, 1956, but I have recently learned that Lachesine is now being manufactu...

A description of the Roper using the chiral chromodielectric model is presented and the transverse A1/2 and the scalar S1/2 helicity amplitudes for the electromagnetic Nucleon–Roper transition are obtained for small and moderate Q. The sign of the amplitudes is correct but the model predictions underestimate the data at the photon point. Our results do not indicate a change of sign in any ampli...


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