How Precisely can we Determine the $\piNN$ Coupling Constant from the Isovector GMO Sum Rule?

The isovector GMO sum rule for zero energy forward pion-nucleon scattering iscritically studied to obtain the charged pion-nucleon coupling constant usingthe precise negatively charged pion-proton and pion-deuteron scattering lengthsdeduced recently from pionic atom experiments. This direct determin...

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Detalles Bibliográficos
Autores principales: Loiseau, Benoit, Ericson, Torleif Erik Oskar, Thomas, Anthony William
Lenguaje:eng
Publicado: 2000
Materias:
Particle Physics - Phenomenology
Acceso en línea:http://cds.cern.ch/record/425685
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author Loiseau, Benoit
Ericson, Torleif Erik Oskar
Thomas, Anthony William
author_facet Loiseau, Benoit
Ericson, Torleif Erik Oskar
Thomas, Anthony William
author_sort Loiseau, Benoit
collection CERN
description The isovector GMO sum rule for zero energy forward pion-nucleon scattering iscritically studied to obtain the charged pion-nucleon coupling constant usingthe precise negatively charged pion-proton and pion-deuteron scattering lengthsdeduced recently from pionic atom experiments. This direct determination leadsto a pseudoscalar charged pion-nucleon coupling constant of 14.23 +- 0.09(statistic) +- 0.17 (systematic). We obtain also accurate values for thepion-nucleon scattering lengths.
id cern-425685
institution Organización Europea para la Investigación Nuclear
language eng
publishDate 2000
record_format invenio
spelling cern-4256852023-03-14T18:01:17Zhttp://cds.cern.ch/record/425685engLoiseau, BenoitEricson, Torleif Erik OskarThomas, Anthony WilliamHow Precisely can we Determine the $\piNN$ Coupling Constant from the Isovector GMO Sum Rule?Particle Physics - PhenomenologyThe isovector GMO sum rule for zero energy forward pion-nucleon scattering iscritically studied to obtain the charged pion-nucleon coupling constant usingthe precise negatively charged pion-proton and pion-deuteron scattering lengthsdeduced recently from pionic atom experiments. This direct determination leadsto a pseudoscalar charged pion-nucleon coupling constant of 14.23 +- 0.09(statistic) +- 0.17 (systematic). We obtain also accurate values for thepion-nucleon scattering lengths.The isovector GMO sum rule for zero energy forward pion-nucleon scattering is critically studied to obtain the charged pion-nucleon coupling constant using the precise negatively charged pion-proton and pion-deuteron scattering lengths deduced recently from pionic atom experiments. This direct determination leads to a pseudoscalar charged pion-nucleon coupling constant of 14.23 +- 0.09 (statistic) +- 0.17 (systematic). We obtain also accurate values for the pion-nucleon scattering lengths.hep-ph/0002056CERN-TH-2000-021ADP-00-06-T394ADP-2000-06-T-394CERN-TH-2000-021oai:cds.cern.ch:4256852000-02-04
spellingShingle Particle Physics - Phenomenology
Loiseau, Benoit
Ericson, Torleif Erik Oskar
Thomas, Anthony William
How Precisely can we Determine the $\piNN$ Coupling Constant from the Isovector GMO Sum Rule?
title How Precisely can we Determine the $\piNN$ Coupling Constant from the Isovector GMO Sum Rule?
title_full How Precisely can we Determine the $\piNN$ Coupling Constant from the Isovector GMO Sum Rule?
title_fullStr How Precisely can we Determine the $\piNN$ Coupling Constant from the Isovector GMO Sum Rule?
title_full_unstemmed How Precisely can we Determine the $\piNN$ Coupling Constant from the Isovector GMO Sum Rule?
title_short How Precisely can we Determine the $\piNN$ Coupling Constant from the Isovector GMO Sum Rule?
title_sort how precisely can we determine the $\pinn$ coupling constant from the isovector gmo sum rule?
topic Particle Physics - Phenomenology
url http://cds.cern.ch/record/425685
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AT ericsontorleiferikoskar howpreciselycanwedeterminethepinncouplingconstantfromtheisovectorgmosumrule
AT thomasanthonywilliam howpreciselycanwedeterminethepinncouplingconstantfromtheisovectorgmosumrule

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