Updated predictions within the heavy quark expansion confirm the lifetime hierarchy τ(Ξ_cc^+) < τ(Ω_cc^+) < τ(Ξ_cc^++) with τ(Ξ_cc^++) = 0.32 ± 0.05 +0.08/-0.07 ps matching LHCb data and provide ratios for the other states.
Strange baryons with two heavy quarks
1 Pith paper cite this work. Polarity classification is still indexing.
1
Pith paper citing it
abstract
The LHCb Experiment at CERN has observed a doubly-charmed baryon $\Xi_{cc}^{++} =ccu$ with a mass of $3621.40 \pm 0.78$ MeV, consistent with many predictions. We use the same methods that led us to predict $M(\Xi_{cc},~J^P{=}1/2^+) = 3627 \pm 12$ MeV and $M(\Xi_{cc}^*,~J^P{=}3/2^+) = 3690 \pm 12$ MeV to predict $M(\Omega_{cc}^+,J^P{=}1/2^+) = 3692 \pm 16$ MeV and $M(\Omega_{cc}^*,~J^P{=} 3/2^+) = 3756 \pm 16$ MeV. Production and decay are discussed briefly, and predictions for $M(\Omega_{bc})$ and $M(\Omega_{bb})$ are included.
fields
hep-ph 1years
2023 1verdicts
UNVERDICTED 1representative citing papers
citing papers explorer
-
Revisiting lifetimes of doubly charmed baryons
Updated predictions within the heavy quark expansion confirm the lifetime hierarchy τ(Ξ_cc^+) < τ(Ω_cc^+) < τ(Ξ_cc^++) with τ(Ξ_cc^++) = 0.32 ± 0.05 +0.08/-0.07 ps matching LHCb data and provide ratios for the other states.