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Searches for d' resonance in double charge exchange reactions of pi sup + -mesons on nuclei in nuclear photoemulsion

797 events have been analyzed in double charge exchange (DCX) reactions of pi sup + -mesons registered in photoemulsion chambers exposed to positive pion beams of the phasotron of the Dzhelepov Laboratory of Nuclear Problems (JINR) at energies of 80-140 MeV. The effective invariant mass of the secon...

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Detalles Bibliográficos
Autores principales: Batusov, Y A, Balestra, F, Bussa, M P, Piragino, G, Pontecorvo, G B
Lenguaje:eng
Publicado: 2002
Materias:
Acceso en línea:http://cds.cern.ch/record/747568
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author Batusov, Y A
Balestra, F
Bussa, M P
Piragino, G
Pontecorvo, G B
author_facet Batusov, Y A
Balestra, F
Bussa, M P
Piragino, G
Pontecorvo, G B
author_sort Batusov, Y A
collection CERN
description 797 events have been analyzed in double charge exchange (DCX) reactions of pi sup + -mesons registered in photoemulsion chambers exposed to positive pion beams of the phasotron of the Dzhelepov Laboratory of Nuclear Problems (JINR) at energies of 80-140 MeV. The effective invariant mass of the secondary pi sup - -meson and the two protons was determined for each three-prong event identified within the energy range of the incident pi sup + -meson between 72 and 140 MeV. The spectrum of effective masses reveals a peak in the 2060-2072 MeV interval with a mean value equal to M sub e sub f sub f =(2065.5+-3.6)MeV. The obtained value of M sub e sub f sub f is in a good agreement with the mass of the d' resonance hypothesized in 'QCD-string' model calculations and confirmed by measurements of the dependence on the incident energy of the DCX cross sections of pi sup + -mesons on nuclei and in pp->pp pi sup -pi sup + process
id cern-747568
institution Organización Europea para la Investigación Nuclear
language eng
publishDate 2002
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spelling cern-7475682019-09-30T06:29:59Zhttp://cds.cern.ch/record/747568engBatusov, Y ABalestra, FBussa, M PPiragino, GPontecorvo, G BSearches for d' resonance in double charge exchange reactions of pi sup + -mesons on nuclei in nuclear photoemulsionParticle Physics797 events have been analyzed in double charge exchange (DCX) reactions of pi sup + -mesons registered in photoemulsion chambers exposed to positive pion beams of the phasotron of the Dzhelepov Laboratory of Nuclear Problems (JINR) at energies of 80-140 MeV. The effective invariant mass of the secondary pi sup - -meson and the two protons was determined for each three-prong event identified within the energy range of the incident pi sup + -meson between 72 and 140 MeV. The spectrum of effective masses reveals a peak in the 2060-2072 MeV interval with a mean value equal to M sub e sub f sub f =(2065.5+-3.6)MeV. The obtained value of M sub e sub f sub f is in a good agreement with the mass of the d' resonance hypothesized in 'QCD-string' model calculations and confirmed by measurements of the dependence on the incident energy of the DCX cross sections of pi sup + -mesons on nuclei and in pp->pp pi sup -pi sup + processJINR-E1-2002-227oai:cds.cern.ch:7475682002
spellingShingle Particle Physics
Batusov, Y A
Balestra, F
Bussa, M P
Piragino, G
Pontecorvo, G B
Searches for d' resonance in double charge exchange reactions of pi sup + -mesons on nuclei in nuclear photoemulsion
title Searches for d' resonance in double charge exchange reactions of pi sup + -mesons on nuclei in nuclear photoemulsion
title_full Searches for d' resonance in double charge exchange reactions of pi sup + -mesons on nuclei in nuclear photoemulsion
title_fullStr Searches for d' resonance in double charge exchange reactions of pi sup + -mesons on nuclei in nuclear photoemulsion
title_full_unstemmed Searches for d' resonance in double charge exchange reactions of pi sup + -mesons on nuclei in nuclear photoemulsion
title_short Searches for d' resonance in double charge exchange reactions of pi sup + -mesons on nuclei in nuclear photoemulsion
title_sort searches for d' resonance in double charge exchange reactions of pi sup + -mesons on nuclei in nuclear photoemulsion
topic Particle Physics
url http://cds.cern.ch/record/747568
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AT balestraf searchesfordresonanceindoublechargeexchangereactionsofpisupmesonsonnucleiinnuclearphotoemulsion
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