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Title: Dynamical coupled-channels study of pi N --> pi pi N reactions

Abstract

As a step toward performing a complete coupled-channels analysis of the world data of pi N, gamma^* N --> pi N, eta N, pi pi N reactions, the pi N --> pi pi N reactions are investigated starting with the dynamical coupled-channels model developed in Phys. Rev. C76, 065201 (2007). The channels included are pi N, eta N, and pi pi N which has pi Delta, rho N, and sigma N resonant components. The non-resonant amplitudes are generated from solving a set of coupled-channels equations with the meson-baryon potentials defined by effective Lagrangians. The resonant amplitudes are generated from 16 bare excited nucleon (N^*) states which are dressed by the non-resonant interactions as constrained by the unitarity condition. The available total cross section data of pi^+ p --> pi^+ pi^+ n, pi^+ pi^0 and pi^- p --> pi^+ pi^- n, pi^- pi^0 n, pi^0 pi^0 n can be reproduced to a very large extent both in magnitudes and energy-dependence. Possible improvements of the model are investigated, in p

Authors:
; ; ; ;
Publication Date:
Research Org.:
Thomas Jefferson National Accelerator Facility (TJNAF), Newport News, VA (United States)
Sponsoring Org.:
USDOE
OSTI Identifier:
956195
Report Number(s):
JLAB-THY-08-855; arXiv:0807.2273; DOE/OR/23177-0454
TRN: US1004926
DOE Contract Number:  
AC05-060R23177
Resource Type:
Journal Article
Journal Name:
Preprint to be distributed
Additional Journal Information:
Journal Name: Preprint to be distributed
Country of Publication:
United States
Language:
English
Subject:
73 NUCLEAR PHYSICS AND RADIATION PHYSICS; 72 PHYSICS OF ELEMENTARY PARTICLES AND FIELDS; AMPLITUDES; ENERGY DEPENDENCE; NUCLEONS; TOTAL CROSS SECTIONS; UNITARITY; PION REACTIONS; PIONS

Citation Formats

Kamano, Hiroyuki, Julia Diaz, Bruno, Lee, Tsung-Shung, Matsuyama, Akihiko, and Sato, Toru. Dynamical coupled-channels study of pi N --> pi pi N reactions. United States: N. p., 2009. Web.
Kamano, Hiroyuki, Julia Diaz, Bruno, Lee, Tsung-Shung, Matsuyama, Akihiko, & Sato, Toru. Dynamical coupled-channels study of pi N --> pi pi N reactions. United States.
Kamano, Hiroyuki, Julia Diaz, Bruno, Lee, Tsung-Shung, Matsuyama, Akihiko, and Sato, Toru. 2009. "Dynamical coupled-channels study of pi N --> pi pi N reactions". United States. https://www.osti.gov/servlets/purl/956195.
@article{osti_956195,
title = {Dynamical coupled-channels study of pi N --> pi pi N reactions},
author = {Kamano, Hiroyuki and Julia Diaz, Bruno and Lee, Tsung-Shung and Matsuyama, Akihiko and Sato, Toru},
abstractNote = {As a step toward performing a complete coupled-channels analysis of the world data of pi N, gamma^* N --> pi N, eta N, pi pi N reactions, the pi N --> pi pi N reactions are investigated starting with the dynamical coupled-channels model developed in Phys. Rev. C76, 065201 (2007). The channels included are pi N, eta N, and pi pi N which has pi Delta, rho N, and sigma N resonant components. The non-resonant amplitudes are generated from solving a set of coupled-channels equations with the meson-baryon potentials defined by effective Lagrangians. The resonant amplitudes are generated from 16 bare excited nucleon (N^*) states which are dressed by the non-resonant interactions as constrained by the unitarity condition. The available total cross section data of pi^+ p --> pi^+ pi^+ n, pi^+ pi^0 and pi^- p --> pi^+ pi^- n, pi^- pi^0 n, pi^0 pi^0 n can be reproduced to a very large extent both in magnitudes and energy-dependence. Possible improvements of the model are investigated, in p},
doi = {},
url = {https://www.osti.gov/biblio/956195}, journal = {Preprint to be distributed},
number = ,
volume = ,
place = {United States},
year = {Thu Jan 01 00:00:00 EST 2009},
month = {Thu Jan 01 00:00:00 EST 2009}
}