Quark Condensate in the Deuteron

We study the changes produced by the deuteron on the QCD quark condensate by means the Feynman-Hellmann theorem and find that the pion mass dependence of the pion-nucleon coupling could play an important role. We also discuss the relation between the many body effect of the condensate and the meson...

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Detalles Bibliográficos
Autores principales: Ballot, J.L., Ericson, Magda, Robilotta, M.R.
Lenguaje:eng
Publicado: 2000
Materias:
Nuclear Physics - Theory
Acceso en línea:https://dx.doi.org/10.1103/PhysRevC.61.055202
http://cds.cern.ch/record/432330
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author Ballot, J.L.
Ericson, Magda
Robilotta, M.R.
author_facet Ballot, J.L.
Ericson, Magda
Robilotta, M.R.
author_sort Ballot, J.L.
collection CERN
description We study the changes produced by the deuteron on the QCD quark condensate by means the Feynman-Hellmann theorem and find that the pion mass dependence of the pion-nucleon coupling could play an important role. We also discuss the relation between the many body effect of the condensate and the meson exchange currents, as seen by photons and pions. For pion probes, the many-body term in the physical amplitude differs significantly from that of soft pions, the one linked to the condensate. Thus no information about the many-body term of the condensate can be extracted from the pion-deuteron scattering length. On the other hand, in the Compton amplitude, the relationship with the condensate is a more direct one.
id cern-432330
institution Organización Europea para la Investigación Nuclear
language eng
publishDate 2000
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spelling cern-4323302023-03-14T18:57:42Zdoi:10.1103/PhysRevC.61.055202http://cds.cern.ch/record/432330engBallot, J.L.Ericson, MagdaRobilotta, M.R.Quark Condensate in the DeuteronNuclear Physics - TheoryWe study the changes produced by the deuteron on the QCD quark condensate by means the Feynman-Hellmann theorem and find that the pion mass dependence of the pion-nucleon coupling could play an important role. We also discuss the relation between the many body effect of the condensate and the meson exchange currents, as seen by photons and pions. For pion probes, the many-body term in the physical amplitude differs significantly from that of soft pions, the one linked to the condensate. Thus no information about the many-body term of the condensate can be extracted from the pion-deuteron scattering length. On the other hand, in the Compton amplitude, the relationship with the condensate is a more direct one.We study the changes produced by the deuteron on the QCD quark condensate by means the Feynman-Hellmann theorem and find that the pion mass dependence of the pion-nucleon coupling could play an important role. We also discuss the relation between the many body effect of the condensate and the meson exchange currents, as seen by photons and pions. For pion probes, the many-body term in the physical amplitude differs significantly from that of soft pions, the one linked to the condensate. Thus no information about the many-body term of the condensate can be extracted from the pion-deuteron scattering length. On the other hand, in the Compton amplitude, the relationship with the condensate is a more direct one.nucl-th/0003055oai:cds.cern.ch:4323302000
spellingShingle Nuclear Physics - Theory
Ballot, J.L.
Ericson, Magda
Robilotta, M.R.
Quark Condensate in the Deuteron
title Quark Condensate in the Deuteron
title_full Quark Condensate in the Deuteron
title_fullStr Quark Condensate in the Deuteron
title_full_unstemmed Quark Condensate in the Deuteron
title_short Quark Condensate in the Deuteron
title_sort quark condensate in the deuteron
topic Nuclear Physics - Theory
url https://dx.doi.org/10.1103/PhysRevC.61.055202
http://cds.cern.ch/record/432330
work_keys_str_mv AT ballotjl quarkcondensateinthedeuteron
AT ericsonmagda quarkcondensateinthedeuteron
AT robilottamr quarkcondensateinthedeuteron

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