Extended-soft-core baryon-baryon model ESC16. I. Nucleon-nucleon scattering
نویسندگان
چکیده
منابع مشابه
Pion-Nucleon Scattering in Kadyshevsky Formalism: II Baryon Exchange Sector
In this paper, which is the second part in a series of two, we construct tree level baryon exchange and resonance amplitudes for πN/MB-scattering in the framework of the Kadyshevsky formalism. We use this formalism to formally implement absolute pair suppression, where we make use of the method of Takahashi and Umezawa. The resulting amplitudes are Lorentz invariant and causal. We continue stud...
متن کاملUnitarized pion-nucleon scattering within Heavy Baryon Chiral Perturbation Theory
By means of the Inverse Amplitude Method we unitarize the elastic pion-nucleon scattering amplitudes obtained from Heavy Baryon Chiral Perturbation Theory to O(q3). Within this approach we can enlarge their applicability range and generate the ∆(1232) resonance. We can find a reasonable description of the pion nucleon phase shifts with O(q2) parameters in agreement with the resonance saturation...
متن کاملGauged Baryon Parity and Nucleon Stability
We show that the Standard Model Lagrangian, including small neutrino masses, has an anomaly-free discrete Z6 symmetry. This symmetry can emerge naturally from (I3 R + Li + Lj − 2Lk) gauge symmetry (Li is the ith lepton number) and ensure the stability of the nucleon even when the threshold of new physics Λ is low. All ∆B = 1 and ∆B = 2 (B is the baryon number) effective operators are forbidden ...
متن کاملQCD at Finite Baryon Density: Nucleon Droplets and Color Superconductivity
We use a variational procedure to study finite density QCD in an approximation in which the interaction between quarks is modelled by that induced by instantons. We find that uniform states with conventional chiral symmetry breaking have negative pressure with respect to empty space at all but the lowest densities, and are therefore unstable. This is a precisely defined phenomenon which motivat...
متن کاملModels of Meson-baryon Reactions in the Nucleon Resonance Region
With very successful experimental efforts in the past few years, we are now facing a challenge to interpret very extensive data of electromagnetic meson production reactions in terms of the structure of nucleon resonances (N). To achieve this goal, we need to perform amplitude analyses of the data in order to extract N parameters. We also need to develop reaction models to analyze the dynamical...
متن کاملذخیره در منابع من
با ذخیره ی این منبع در منابع من، دسترسی به آن را برای استفاده های بعدی آسان تر کنید
ژورنال
عنوان ژورنال: Physical Review C
سال: 2019
ISSN: 2469-9985,2469-9993
DOI: 10.1103/physrevc.99.044002