Title: Analysis of the low-energy π±p differential cross sections of the CHAOS Collaboration
Authors : Matsinos, Evangelos
Rasche, Günther
Published in : Nuclear Physics A, Nuclear and hadronic physics
Volume(Issue) : 903
Pages : 65
Pages to: 80
Publisher / Ed. Institution : Elsevier
Issue Date: 2013
License (according to publishing contract) : Licence according to publishing contract
Type of review: Peer review (Publication)
Language : English
Subjects : Scattering; Pion; Proton; Elastic
Subject (DDC) : 530: Physics
Abstract: This paper presents the results of an analysis of the low-energy differential cross sections, acquired by the CHAOS Collaboration at TRIUMF (Denz et al., 2006; Denz, 2004). We first analyse separately the π+p and the π−p elastic-scattering measurements on the basis of standard low-energy parameterisations of the s- and p-wave K-matrix elements. After the removal of the outliers, we subject the truncated π±p elastic-scattering databases into a common optimisation scheme using the ETH model (Goudsmit et al., 1994); the optimisation failed to produce reasonable values for the model parameters. We conclude that the problems we have encountered in the analysis of these data are due to the shape of the angular distributions of their π+p differential cross sections.
Departement: School of Engineering
Organisational Unit: Institute of Applied Mathematics and Physics (IAMP)
Institute of Mechatronic Systems (IMS)
Publication type: Article in scientific Journal
DOI : 10.1016/j.nuclphysa.2012.12.129
ISSN: 0375-9474
1873-1554
URI: https://digitalcollection.zhaw.ch/handle/11475/15775
Appears in Collections:Publikationen School of Engineering

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