On the chemical equilibration of strangeness-exchange reaction in heavy-ion collisions

Thw strangeness-exchange reaction pi + Y -> K- + N is shown to be the dynamical origin of chemical equilibration for K- production in heavy-ion collisions up to beam energies of 10 A GeV. The hyperons occurring in this process are produced associately with K+ in baryon-baryon and meson-baryon int...

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Autores principales: Cleymans, J., Forster, A., Oeschler, H., Redlich, K., Uhlig, F.
Lenguaje:eng
Publicado: 2004
Materias:
Particle Physics - Phenomenology
Acceso en línea:https://dx.doi.org/10.1016/j.physletb.2004.09.078
http://cds.cern.ch/record/741005
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author Cleymans, J.
Forster, A.
Oeschler, H.
Redlich, K.
Uhlig, F.
author_facet Cleymans, J.
Forster, A.
Oeschler, H.
Redlich, K.
Uhlig, F.
author_sort Cleymans, J.
collection CERN
description Thw strangeness-exchange reaction pi + Y -> K- + N is shown to be the dynamical origin of chemical equilibration for K- production in heavy-ion collisions up to beam energies of 10 A GeV. The hyperons occurring in this process are produced associately with K+ in baryon-baryon and meson-baryon interactions. This connection is demonstrated by the ratio K-/K+ which does not vary with centrality and shows a linear correlation with the yield of pions per participant. At incident energies above AGS this correlation no longer holds due to the change in the production mechanism of kaons.
id cern-741005
institution Organización Europea para la Investigación Nuclear
language eng
publishDate 2004
record_format invenio
spelling cern-7410052023-03-14T19:54:10Zdoi:10.1016/j.physletb.2004.09.078http://cds.cern.ch/record/741005engCleymans, J.Forster, A.Oeschler, H.Redlich, K.Uhlig, F.On the chemical equilibration of strangeness-exchange reaction in heavy-ion collisionsParticle Physics - PhenomenologyThw strangeness-exchange reaction pi + Y -> K- + N is shown to be the dynamical origin of chemical equilibration for K- production in heavy-ion collisions up to beam energies of 10 A GeV. The hyperons occurring in this process are produced associately with K+ in baryon-baryon and meson-baryon interactions. This connection is demonstrated by the ratio K-/K+ which does not vary with centrality and shows a linear correlation with the yield of pions per participant. At incident energies above AGS this correlation no longer holds due to the change in the production mechanism of kaons.The strangeness-exchange reaction pi + Y -> K- + N is shown to be the dynamical origin of chemical equilibration for K- production in heavy-ion collisions up to beam energies of 10 A GeV. The hyperons occurring in this process are produced associately with K+ in baryon-baryon and meson-baryon interactions. This connection is demonstrated by the ratio K-/K+ which does not vary with centrality and shows a linear correlation with the yield of pions per participant. At incident energies above AGS this correlation no longer holds due to the change in the production mechanism of kaons.The strangeness-exchange reaction pi + Y -> K- + N is shown to be the dynamical origin of chemical equilibration for K- production in heavy-ion collisions up to beam energies of 10 A GeV. The hyperons occurring in this process are produced associately with K+ in baryon-baryon and meson-baryon interactions. This connection is demonstrated by the ratio K-/K+ which does not vary with centrality and shows a linear correlation with the yield of pions per participant. At incident energies above AGS this correlation no longer holds due to the change in the production mechanism of kaons.The strangeness-exchange reaction pi + Y -> K- + N is shown to be the dynamical origin of chemical equilibration for K- production in heavy-ion collisions up to beam energies of 10 A GeV. The hyperons occurring in this process are produced associately with K+ in baryon-baryon and meson-baryon interactions. This connection is demonstrated by the ratio K-/K+ which does not vary with centrality and shows a linear correlation with the yield of pions per participant. At incident energies above AGS this correlation no longer holds due to the change in the production mechanism of kaons.The strangeness-exchange reaction pi + Y -> K- + N is shown to be the dynamical origin of chemical equilibration for K- production in heavy-ion collisions up to beam energies of 10 A GeV. The hyperons occurring in this process are produced associately with K+ in baryon-baryon and meson-baryon interactions. This connection is demonstrated by the ratio K-/K+ which does not vary with centrality and shows a linear correlation with the yield of pions per participant. At incident energies above AGS this correlation no longer holds due to the change in the production mechanism of kaons.The strangeness-exchange reaction π+Y↔K−+N is shown to be the dynamical origin of chemical saturation and equilibration for K− production in heavy-ion collisions up to beam energies of 10 AGeV . The hyperons occurring in this process are produced in association with K+ in baryon–baryon and meson–baryon interactions. This connection is demonstrated by the ratio of K−/K+ which does not vary with centrality and shows a linear correlation with the yield of pions per participant. At incident energies above AGS this correlation no longer holds due to the change in the production mechanism of kaons.hep-ph/0406108oai:cds.cern.ch:7410052004
spellingShingle Particle Physics - Phenomenology
Cleymans, J.
Forster, A.
Oeschler, H.
Redlich, K.
Uhlig, F.
On the chemical equilibration of strangeness-exchange reaction in heavy-ion collisions
title On the chemical equilibration of strangeness-exchange reaction in heavy-ion collisions
title_full On the chemical equilibration of strangeness-exchange reaction in heavy-ion collisions
title_fullStr On the chemical equilibration of strangeness-exchange reaction in heavy-ion collisions
title_full_unstemmed On the chemical equilibration of strangeness-exchange reaction in heavy-ion collisions
title_short On the chemical equilibration of strangeness-exchange reaction in heavy-ion collisions
title_sort on the chemical equilibration of strangeness-exchange reaction in heavy-ion collisions
topic Particle Physics - Phenomenology
url https://dx.doi.org/10.1016/j.physletb.2004.09.078
http://cds.cern.ch/record/741005
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AT oeschlerh onthechemicalequilibrationofstrangenessexchangereactioninheavyioncollisions
AT redlichk onthechemicalequilibrationofstrangenessexchangereactioninheavyioncollisions
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