Observation of five new narrow Ω0c states decaying to Ξ+cK−

R. Aaij L. Beaucourt 1 M. Chefdeville 1 D. Decamp 1 N. Déléage 1 P. Ghez 1 J.-F. Marchand 1 M.-N. Minard 1 B. Pietrzyk 1 S. t'Jampens 1 V. Tisserand 1 E. Tournefier 1 Z. Xu 1 J. Arnau Romeu 2 E. Aslanides 2 J. Cogan 2 K. De Bruyn 2 R. Legac 2 O. Leroy 2 G. Mancinelli 2 M. Martin 2 J. Serrano 2 A. Tayduganov 2 A. Tsaregorodtsev 2
1 LAPP/Laboratoire d'Annecy-le-Vieux de Physique des Particules - Laboratoire d'Annecy de Physique des Particules
2 CPPM - Centre de Physique des Particules de Marseille
Abstract : The Ξ+cK− mass spectrum is studied with a sample of pp collision data corresponding to an integrated luminosity of 3.3 fb−1, collected by the LHCb experiment. The Ξ+c is reconstructed in the decay mode pK−π+. Five new, narrow excited Ω0c states are observed: the Ωc(3000)0, Ωc(3050)0, Ωc(3066)0, Ωc(3090)0, and Ωc(3119)0. Measurements of their masses and widths are reported.
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Submitted on : Monday, March 27, 2017 - 10:33:33 AM
Last modification on : Monday, June 3, 2019 - 1:38:03 PM

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R. Aaij, L. Beaucourt, M. Chefdeville, D. Decamp, N. Déléage, et al.. Observation of five new narrow Ω0c states decaying to Ξ+cK−. Physical Review Letters, American Physical Society, 2017, 118, pp.182001 ⟨10.1103/PhysRevLett.118.182001⟩. ⟨in2p3-01495988⟩

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