Cargando…
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...
Autores principales: | , , , , |
---|---|
Lenguaje: | eng |
Publicado: |
2002
|
Materias: | |
Acceso en línea: | http://cds.cern.ch/record/747568 |
_version_ | 1780904166378438656 |
---|---|
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 |
record_format | invenio |
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 |
work_keys_str_mv | AT batusovya searchesfordresonanceindoublechargeexchangereactionsofpisupmesonsonnucleiinnuclearphotoemulsion AT balestraf searchesfordresonanceindoublechargeexchangereactionsofpisupmesonsonnucleiinnuclearphotoemulsion AT bussamp searchesfordresonanceindoublechargeexchangereactionsofpisupmesonsonnucleiinnuclearphotoemulsion AT piraginog searchesfordresonanceindoublechargeexchangereactionsofpisupmesonsonnucleiinnuclearphotoemulsion AT pontecorvogb searchesfordresonanceindoublechargeexchangereactionsofpisupmesonsonnucleiinnuclearphotoemulsion |