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Observation of an Isotriplet of Excited Charmed Baryons Decaying to $\Lambda_c^+ \pi$
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We report the observation of an isotriplet of excited charmed baryons, decaying into Lambda_c+ pi-, Lambda_c+ pi0 and Lambda_c+ pi+. We measure the mass differences M(Lambda_c+ pi)-M(Lambda_c+) and widths to be 515.4 +3.2-3.1 +2.1-6.0 MeV/c^2, 61 +18-13 +22-13 MeV for the neutral state; 505.4 +5.8-4.6 +12.4-2.0 MeV/c^2, 62 +37-23 +52-38 MeV for the charged state and 514.5 +3.4-3.1 +2.8-4.9 MeV/c^2, 75 +18-13 +12-11 MeV for the doubly charged state, where the uncertainties are statistical and systematic, respectively. These results are obtained from a 281 /fb data sample collected with the Belle detector near the Upsilon(4S) resonance, at the KEKB asymmetric energy e+e- collider.
Forward citations
Cited by 2 Pith papers
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Magnetic dipole moments of the singly-heavy baryons with spin-$\frac{1}{2}$ and spin-$\frac{3}{2}$
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