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A study of pi /sup -/ pi /sup -/ scattering from pi /sup -/p interactions at 393 GeV/c

A modified Chew-Low extrapolation procedure is applied to the reaction pi /sup -/p to Delta /sup ++/ pi /sup -/ pi /sup -/ to extract the I=2 pi pi elastic cross sections from threshold to 1260 MeV. The predictions of the one-pion-exchange model are used to estimate the contributions from background...

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Detalles Bibliográficos
Autores principales: Losty, Michael J, Alitti, J, Chaloupka, V, Ferrando, A, Gandois, B, Louie, J, Montanet, Lucien, Paul, E, Yaffe, D, Zieminski, A
Lenguaje:eng
Publicado: 1974
Materias:
Acceso en línea:https://dx.doi.org/10.1016/0550-3213(74)90131-X
http://cds.cern.ch/record/873703
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author Losty, Michael J
Alitti, J
Chaloupka, V
Ferrando, A
Gandois, B
Louie, J
Montanet, Lucien
Paul, E
Yaffe, D
Zieminski, A
author_facet Losty, Michael J
Alitti, J
Chaloupka, V
Ferrando, A
Gandois, B
Louie, J
Montanet, Lucien
Paul, E
Yaffe, D
Zieminski, A
author_sort Losty, Michael J
collection CERN
description A modified Chew-Low extrapolation procedure is applied to the reaction pi /sup -/p to Delta /sup ++/ pi /sup -/ pi /sup -/ to extract the I=2 pi pi elastic cross sections from threshold to 1260 MeV. The predictions of the one-pion-exchange model are used to estimate the contributions from background processes of the type pi /sup -/p to Delta /sup 0/ rho /sup 0/. The moments of the pi /sup -/ pi /sup -/ angular distribution are also extrapolated to the pion pole and a phase shift analysis performed. The s-wave inelasticity is constrained using information on the inelastic cross section coming from six-body final states. The magnitude of the s-wave phase shift at the K/sup 0/ mass is found to be 7.2 degrees +or-1.0 degrees , increasing to 26.2 degrees +or-2.5 degrees at 1 GeV. d- and g-waves contribute above about 900 MeV, but the corresponding phase shifts are small compared with the s-wave. All three phase shifts have the same sign. (24 refs).
id cern-873703
institution Organización Europea para la Investigación Nuclear
language eng
publishDate 1974
record_format invenio
spelling cern-8737032019-09-30T06:29:59Zdoi:10.1016/0550-3213(74)90131-Xhttp://cds.cern.ch/record/873703engLosty, Michael JAlitti, JChaloupka, VFerrando, AGandois, BLouie, JMontanet, LucienPaul, EYaffe, DZieminski, AA study of pi /sup -/ pi /sup -/ scattering from pi /sup -/p interactions at 393 GeV/cParticle Physics - PhenomenologyA modified Chew-Low extrapolation procedure is applied to the reaction pi /sup -/p to Delta /sup ++/ pi /sup -/ pi /sup -/ to extract the I=2 pi pi elastic cross sections from threshold to 1260 MeV. The predictions of the one-pion-exchange model are used to estimate the contributions from background processes of the type pi /sup -/p to Delta /sup 0/ rho /sup 0/. The moments of the pi /sup -/ pi /sup -/ angular distribution are also extrapolated to the pion pole and a phase shift analysis performed. The s-wave inelasticity is constrained using information on the inelastic cross section coming from six-body final states. The magnitude of the s-wave phase shift at the K/sup 0/ mass is found to be 7.2 degrees +or-1.0 degrees , increasing to 26.2 degrees +or-2.5 degrees at 1 GeV. d- and g-waves contribute above about 900 MeV, but the corresponding phase shifts are small compared with the s-wave. All three phase shifts have the same sign. (24 refs).oai:cds.cern.ch:8737031974
spellingShingle Particle Physics - Phenomenology
Losty, Michael J
Alitti, J
Chaloupka, V
Ferrando, A
Gandois, B
Louie, J
Montanet, Lucien
Paul, E
Yaffe, D
Zieminski, A
A study of pi /sup -/ pi /sup -/ scattering from pi /sup -/p interactions at 393 GeV/c
title A study of pi /sup -/ pi /sup -/ scattering from pi /sup -/p interactions at 393 GeV/c
title_full A study of pi /sup -/ pi /sup -/ scattering from pi /sup -/p interactions at 393 GeV/c
title_fullStr A study of pi /sup -/ pi /sup -/ scattering from pi /sup -/p interactions at 393 GeV/c
title_full_unstemmed A study of pi /sup -/ pi /sup -/ scattering from pi /sup -/p interactions at 393 GeV/c
title_short A study of pi /sup -/ pi /sup -/ scattering from pi /sup -/p interactions at 393 GeV/c
title_sort study of pi /sup -/ pi /sup -/ scattering from pi /sup -/p interactions at 393 gev/c
topic Particle Physics - Phenomenology
url https://dx.doi.org/10.1016/0550-3213(74)90131-X
http://cds.cern.ch/record/873703
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