Revisiting lifetimes of doubly charmed baryons

Dulibić, Lovro; Gratrex, James; Melić, Blaženka; Nišandžić, Ivan (2023) Revisiting lifetimes of doubly charmed baryons. Journal of High Energy Physics, 2023 (07). ISSN 1126-6708

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Abstract

We present updated predictions for lifetimes of doubly charmed baryons, within the heavy quark expansion, including available NLO ff s contributions and newly-computed terms in the 1/m(c) series. Our improved results confirm the expected hierarchy tau(Xi(+)(cc)) < tau(Omega(+)(cc)) < tau(Xi(+)(cc)), while the predicted lifetime tau(Xi(+)(cc)) = 0.32 +/- 0.5(-0.7)(+0.8) ps is consistent with the recent LHCb determination. We provide predictions for the lifetime ratios of the Xi(+)(cc) and Omega(+)(cc) baryons relative to the Xi(+)(cc) baryon, namely tau(Xi(+)(cc))/ tau(Xi(++)(cc)) = 0.22 +/- 0.05 +/- 0.04 and tau(Omega(+)(cc))/ < tau(Xi(++)(cc))= 0.52 +/- 0.13(-0.02)(+0.03) .

Item Type:	Article
Uncontrolled Keywords:	Charm Flavour Violation; Properties of Hadrons
Subjects:	NATURAL SCIENCES > Physics > Physics of Elementary Particles and Fields
Divisions:	Theoretical Physics Division
Projects:	Project title Project leader Project code Project type Raspadi i vremena života teških hadrona-HHDeLi Blaženka Melić IP-2019-04-7094 HRZZ
Depositing User:	Ivan Nišandžić
Date Deposited:	08 Jan 2025 15:13
URI:	http://fulir.irb.hr/id/eprint/9402
DOI:	10.1007/JHEP07(2023)061

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