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Inclusive charmed-baryon decays and lifetimes


Guberina, Branko; Melić, Blaženka
Inclusive charmed-baryon decays and lifetimes // European physical journal C : particles and fields, 2 (1998), 4; 697-703 doi:10.1007/s100529800719 (međunarodna recenzija, članak, znanstveni)


Naslov
Inclusive charmed-baryon decays and lifetimes

Autori
Guberina, Branko ; Melić, Blaženka

Izvornik
European physical journal C : particles and fields (1434-6044) 2 (1998), 4; 697-703

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

Ključne riječi
Inclusive charmed-baryon decays; charmed-baryon lifetimes; preasymptotic effects

Sažetak
We have quantitatively reanalyzed the inclusive charmed-baryon decays. New ingredients are the Voloshin preasymptotic effects in semileptonic decays and the Cabibbo-subleading contributions to both semileptonic and nonleptonic decays. It has been found that the Cabbibo-subleading Voloshin contribution essentially improves the theoretical semileptonic branching ratio of Lambda /sub c//sup +/, in agreement with experiment. The semileptonic branching ratios for Xi /sub c//sup +/ and Omega /sub c//sup 0/ are found to be large, i.e., of the order of 20%. The lifetimes hierarchy is in a good qualitative and even quantitative agreement with experiment except for the Xi /sub c//sup +/ lifetime, which is somewhat smaller than the experimental value. Future measurements, especially measurements of the semileptonic branching ratios for Omega /sub c//sup 0/, Xi /sub c//sup +/ and Xi /sub c//sup 0/ should be decisive for the check of this approach.

Izvorni jezik
Engleski

Znanstvena područja
Fizika



POVEZANOST RADA


Projekt / tema
00980102

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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