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Pregled bibliografske jedinice broj: 677071

"In-medium modifications of the ω meson near the production threshold"


M. Thiel, M.; ...; Korolija, Milorad; ...; Supek, Ivan; ...; Zamboni, Ivana
"In-medium modifications of the ω meson near the production threshold" // European physical journal A : hadrons and nuclei, 49 (2013), 132-1 doi:10.1140/epja/i2013-13132-6 (međunarodna recenzija, članak, znanstveni)


Naslov
"In-medium modifications of the ω meson near the production threshold"

Autori
M. Thiel, M. ; ... ; Korolija, Milorad ; ... ; Supek, Ivan ; ... ; Zamboni, Ivana

Izvornik
European physical journal A : hadrons and nuclei (1434-6001) 49 (2013); 132-1

Vrsta, podvrsta i kategorija rada
Radovi u časopisima, članak, znanstveni

Ključne riječi
In-medium properties; ω meson; Crystal Ball; MAMI-C

Sažetak
The in-medium properties of the ω meson were investigated at the MAMI-C electron accelerator using the Crystal Ball/TAPS detector system to identify ω mesons through their ω → π 0 γ decay channel. Two solid targets (C, Nb) and a LH2 target as a reference have been used. In the energy range 900 to 1300 MeV the ω lineshapes for the different nuclei are compared and a broadening of the ω signal for the niobium target is observed in comparison to the liquid-hydrogen target. In a second analysis the ω momentum distributions for the solid targets are determined for 50 MeV/c wide bins. For both analyses a comparison to transport calculations shows that the data are consistent with an in-medium modification by collisional broadening, as observed by transparency ratio measurements.

Izvorni jezik
Engleski

Znanstvena područja
Fizika



POVEZANOST RADA


Projekt / tema
098-0982887-2888 - Hadronska fizika i QCD (Ivan Supek, )

Ustanove
Institut "Ruđer Bošković", Zagreb

Časopis indeksira:


  • Current Contents Connect (CCC)
  • Web of Science Core Collection (WoSCC)
    • Science Citation Index Expanded (SCI-EXP)
    • SCI-EXP, SSCI i/ili A&HCI
  • Scopus


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