Systematics of Meson-skyrmion Scattering*

نویسنده

  • Michael Perelman Mattis
چکیده

The S-matrix characterizing the scattering of pions from nucleons is calcu-lated in the context of skyrmion models of the nucleon. These are models inwhich the nucleon is considered a soliton in the field of pions. The spectrum ofnucleon and delta resonances in the Skyrme model is calculated and found o bein overall good agreement with Nature. Model-independent sum rules betweenamplitudes in the same partial wave are derived and examined. An extension ofthe formalism to the case of three light flavors is presented.

برای دانلود متن کامل این مقاله و بیش از 32 میلیون مقاله دیگر ابتدا ثبت نام کنید

ثبت نام

اگر عضو سایت هستید لطفا وارد حساب کاربری خود شوید

منابع مشابه

PHENOMENOLOGY OF Tl ! $ E MESON - SKYRMION SYSTEM

This chapter is devoted to a study of meson-nucleon scattering in chiral soliton models of the nucleon.“-” Of course, scattering processes can be analyzed in several different energy regimes, each of which dictates its own set of appropriate approximations. The “soft-pion” limit, in particular, has been thoroughly examined by Schnitzer.[‘] Instead, we shall be focusing our attention on the char...

متن کامل

Spectroscopy without Quarks: a Skyrme-model Sampler*

A potpourri of Skyrme-model results for the meson-baryon system is surveyed. This talk is devoted to a study of meson-nucleon scattering in skyrmion models of the nucleon. [l”’ We shall focu s o n the characteristic energy-range of the baryon resonances, typically 1.5-2.5 GeV. This is well beyond the point where the chiral Lagrangians are conventionally applied; nor is it known at present how t...

متن کامل

The Role of the Dilaton in Dense Skyrmion Matter

In this note, we report on a remarkable and surprising interplay between the ω meson and the dilaton χ in the structure of a single skyrmion as well as in the phase structure of dense skyrmion matter which may have a potentially important consequence on the properties of compact stars. In our continuing effort to understand hadronic matter at high density, we have developed a unified field theo...

متن کامل

Scattering of Skyrmions

In this paper, we present a detailed study of Skyrmion-Skyrmion scattering for two B = 1 Skyrmions in the attractive channel where we observe two different scattering regimes. For large separation, the scattering can be approximated as interacting dipoles. We give a qualitative estimate when this approximation breaks down. For small separations we observe an additional short-range repulsion whi...

متن کامل

Skyrmions and vector mesons.

We discuss the scattering of mesons of arbitrary spin and isospin from baryons in models in which the baryon is considered a soliton, or “skyrmion,” in an effective Lagrangian of mesons. Model-independent linear relations between partialwave amplitudes are derived for TN ---) pN and TN + wN , and, where possible, are compared with experiment. Submitted for Publication * Work supported by the De...

متن کامل

ذخیره در منابع من


  با ذخیره ی این منبع در منابع من، دسترسی به آن را برای استفاده های بعدی آسان تر کنید

برای دانلود متن کامل این مقاله و بیش از 32 میلیون مقاله دیگر ابتدا ثبت نام کنید

ثبت نام

اگر عضو سایت هستید لطفا وارد حساب کاربری خود شوید

عنوان ژورنال:

دوره   شماره 

صفحات  -

تاریخ انتشار 1986