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- W2313286014 abstract "We present measurements of the masses and decay widths of the baryonic states Σc(2455)0/++ and Σc(2520)0/++ using a data sample corresponding to an integrated luminosity of 711 fb−1 collected with the Belle detector at the KEKB e+e− asymmetric-energy collider operating at the ϒ(4S) resonance. We report the mass differences with respect to the Λc+ baryon M(Σc(2455)0)−M(Λc+)=167.29±0.01±0.02 MeV/c2,M(Σc(2455)++)−M(Λc+)=167.51±0.01±0.02 MeV/c2,M(Σc(2520)0)−M(Λc+)=231.98±0.11±0.04 MeV/c2,M(Σc(2520)++)−M(Λc+)=231.99±0.10±0.02 MeV/c2,and the decay widths Γ(Σc(2455)0)=1.76±0.04−0.21+0.09 MeV/c2,Γ(Σc(2455)++)=1.84±0.04−0.20+0.07 MeV/c2,Γ(Σc(2520)0)=15.41±0.41−0.32+0.20 MeV/c2,Γ(Σc(2520)++)=14.77±0.25−0.30+0.18 MeV/c2,where the first uncertainties are statistical and the second are systematic. The isospin mass splittings are measured to be M(Σc(2455)++)−M(Σc(2455)0)=0.22±0.01±0.01 MeV/c2 and M(Σc(2520)++)−M(Σc(2520)0)=0.01±0.15±0.03 MeV/c2. These results are the most precise to date.Received 23 April 2014DOI:https://doi.org/10.1103/PhysRevD.89.091102© 2014 American Physical Society" @default.
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