A measurement of the lifetimes of Xi /sup 0/ and Lambda hyperons

The mean lifetimes of the Lambda and Xi /sup 0/ hyperons have been measured in a short neutral beam at the CERN Proton Synchrotron. Lambda and Xi /sup 0/ decays have been identified by measuring their decay products in a magnetic spectrometer and in a lead glass hodoscope. The experimental results,...

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Detalles Bibliográficos
Autores principales: Zech, G, Dydak, F, Geweniger, C, Kleinknecht, K, Navarria, Francesco Luigi, Overseth, O E, Steffen, P, Taureg, H, Wahl, H, Williams, E G H
Lenguaje:eng
Publicado: 1977
Materias:
Particle Physics - Phenomenology
Acceso en línea:https://dx.doi.org/10.1016/0550-3213(77)90414-X
http://cds.cern.ch/record/878580
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author Zech, G
Dydak, F
Geweniger, C
Kleinknecht, K
Navarria, Francesco Luigi
Overseth, O E
Steffen, P
Taureg, H
Wahl, H
Williams, E G H
author_facet Zech, G
Dydak, F
Geweniger, C
Kleinknecht, K
Navarria, Francesco Luigi
Overseth, O E
Steffen, P
Taureg, H
Wahl, H
Williams, E G H
author_sort Zech, G
collection CERN
description The mean lifetimes of the Lambda and Xi /sup 0/ hyperons have been measured in a short neutral beam at the CERN Proton Synchrotron. Lambda and Xi /sup 0/ decays have been identified by measuring their decay products in a magnetic spectrometer and in a lead glass hodoscope. The experimental results, based on 53000 Lambda decays and 6300 Xi /sup 0/ decays, are tau /sub Lambda /=(2.69+or-0.03)*10/sup -10/ s, tau /sub Xi /0=(2.77+or-0.16)*10/sup -10/ s-( tau /sub Lambda /-2.69*10/sup -10/ s). From the result for tau /sub Xi /0 together with existing data on tau /sub Xi /- a violation is obtained of the Delta I=/sup 1///sub 2/ rule in non-leptonic Xi decays. (11 refs).
id cern-878580
institution Organización Europea para la Investigación Nuclear
language eng
publishDate 1977
record_format invenio
spelling cern-8785802019-09-30T06:29:59Zdoi:10.1016/0550-3213(77)90414-Xhttp://cds.cern.ch/record/878580engZech, GDydak, FGeweniger, CKleinknecht, KNavarria, Francesco LuigiOverseth, O ESteffen, PTaureg, HWahl, HWilliams, E G HA measurement of the lifetimes of Xi /sup 0/ and Lambda hyperonsParticle Physics - PhenomenologyThe mean lifetimes of the Lambda and Xi /sup 0/ hyperons have been measured in a short neutral beam at the CERN Proton Synchrotron. Lambda and Xi /sup 0/ decays have been identified by measuring their decay products in a magnetic spectrometer and in a lead glass hodoscope. The experimental results, based on 53000 Lambda decays and 6300 Xi /sup 0/ decays, are tau /sub Lambda /=(2.69+or-0.03)*10/sup -10/ s, tau /sub Xi /0=(2.77+or-0.16)*10/sup -10/ s-( tau /sub Lambda /-2.69*10/sup -10/ s). From the result for tau /sub Xi /0 together with existing data on tau /sub Xi /- a violation is obtained of the Delta I=/sup 1///sub 2/ rule in non-leptonic Xi decays. (11 refs).oai:cds.cern.ch:8785801977
spellingShingle Particle Physics - Phenomenology
Zech, G
Dydak, F
Geweniger, C
Kleinknecht, K
Navarria, Francesco Luigi
Overseth, O E
Steffen, P
Taureg, H
Wahl, H
Williams, E G H
A measurement of the lifetimes of Xi /sup 0/ and Lambda hyperons
title A measurement of the lifetimes of Xi /sup 0/ and Lambda hyperons
title_full A measurement of the lifetimes of Xi /sup 0/ and Lambda hyperons
title_fullStr A measurement of the lifetimes of Xi /sup 0/ and Lambda hyperons
title_full_unstemmed A measurement of the lifetimes of Xi /sup 0/ and Lambda hyperons
title_short A measurement of the lifetimes of Xi /sup 0/ and Lambda hyperons
title_sort measurement of the lifetimes of xi /sup 0/ and lambda hyperons
topic Particle Physics - Phenomenology
url https://dx.doi.org/10.1016/0550-3213(77)90414-X
http://cds.cern.ch/record/878580
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