Naslov
Inclusive decays and lifetimes of doubly charmed baryons

Autori
Guberina, Branko ; Melić, Blaženka ; Štefančić, Hrvoje

Izvornik
European physical journal C (1434-6044) 9 (1999), 2; 213-219

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

Ključne riječi
heavy baryons; doubly charmed baryons; lifetimes; preasymptotic effects; OPE

Sažetak
The analysis of singly charmed hadrons has been extended to the case of doubly charmed baryons, $Xi_{cc}^{++}$, $Xi_{cc}^{+}$ and $Omega_{cc}^{+}$. Doubly charmed baryons are described as a system containing a heavy $cc$-diquark and a light quark, similarly as in a heavy-light meson. This leads to preasymptotic effects in semileptonic and nonleptonic decays which are essentially proportional to the meson wave function. Interplay between preasymptotic effects in semileptonic and/or nonleptonic decay rates leads to very clear predictions for semileptonic branching ratios and lifetimes of doubly charmed baryons.

Izvorni jezik
Engleski

Znanstvena područja
Fizika

POVEZANOST RADA