Inclusive charmed-baryon decays and lifetimes

Guberina, Branko; Melić, Blaženka (1998) Inclusive charmed-baryon decays and lifetimes. European Physical Journal C: Particles and Fields, 2 (4). pp. 697-703. ISSN 1434-6044

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Abstract

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(c)(+), in agreement with experiment. The semileptonic branching ratios for Xi(c)(+) and Omega(c)(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(c)(+) lifetime, which is somewhat smaller than the experimental value. Future measurements, especially measurements of the semileptonic branching ratios for Omega(c)(0), Xi(c)(+) and Xi(c)(0) should be decisive for the check of this approach.

Item Type:	Article
Uncontrolled Keywords:	heavy flavor decays
Subjects:	NATURAL SCIENCES > Physics NATURAL SCIENCES > Physics > Physics of Elementary Particles and Fields
Divisions:	Theoretical Physics Division
Projects:	Project title Project leader Project code Project type Teorijska istraživanja osobina fundamentalnih čestica Branko Guberina 00980102 MZOS
Depositing User:	Blaženka Melić
Date Deposited:	07 Oct 2013 10:27
URI:	http://fulir.irb.hr/id/eprint/730
DOI:	10.1007/s100529800719

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