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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...
Autores principales: | , , , , , , , , , |
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Lenguaje: | eng |
Publicado: |
1974
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Materias: | |
Acceso en línea: | https://dx.doi.org/10.1016/0550-3213(74)90131-X http://cds.cern.ch/record/873703 |
_version_ | 1780907714152497152 |
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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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