Pregled bibliografske jedinice broj: 37972
Enhancement of preasymptotic effects in inclusive beauty decays
Enhancement of preasymptotic effects in inclusive beauty decays // Physics letters B, 469 (1999), 1-4; 253-258 doi:10.1016/S0370-2693(99)01198-3 (međunarodna recenzija, članak, znanstveni)
CROSBI ID: 37972 Za ispravke kontaktirajte CROSBI podršku putem web obrasca
Naslov
Enhancement of preasymptotic effects in inclusive beauty decays
Autori
Guberina, Branko ; Melić, Blaženka ; Štefančić, Hrvoje
Izvornik
Physics letters B (0370-2693) 469
(1999), 1-4;
253-258
Vrsta, podvrsta i kategorija rada
Radovi u časopisima, članak, znanstveni
Ključne riječi
beauty baryons; lifetimes; inclusive decays; four-quark operators
Sažetak
We extend Voloshin's recent analysis of charmed and beauty hyperon decays based on SU(3) symmetry and heavy quark effective theory, by introducing a rather moderate model-dependence, in order to obtain more predictive power, e.g. the values of lifetimes of the (Lambda(b), Xi(b)) hyperon triplet and the lifetime of Omega(b). In this way we obtain an improvement of the ratio tau(Lambda(b))/tau(B-d(0)) similar to 0.9 and the hierarchy of lifetimes tau(Lambda(b)) similar or equal to tau(Xi(b)(0)) < tau(Xi(b)(-)) < tau(Omega(b)) with lifetimes of Xi(b)(-) and Omega(b) exceeding the lifetime of Lambda(b) by 22% and 35%, respectively.
Izvorni jezik
Engleski
Znanstvena područja
Fizika
Citiraj ovu publikaciju:
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
