Observation of the Doubly Charmed Baryon Ξ++cc
| Parent link: | Physical Review Letters: Scientific Journal.— , 1958- Vol. 119, iss. 4.— 2017.— [112001, 10 p.] |
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| Other Authors: | , , , , , |
| Summary: | Title screen A highly significant structure is observed in the Λ+cK−π+π+ mass spectrum, where the Λ+c baryon is reconstructed in the decay mode pK−π+. The structure is consistent with originating from a weakly decaying particle, identified as the doubly charmed baryon Ξ++cc. The difference between the masses of the Ξ++cc and Λ+c states is measured to be 1334.94±0.72(stat.)±0.27(syst.) MeV/c2, and the Ξ++ccmass is then determined to be 3621.40±0.72(stat.)±0.27(syst.)±0.14(Λ+c) MeV/c2, where the last uncertainty is due to the limited knowledge of the Λ+c mass. The state is observed in a sample of proton-proton collision data collected by the LHCb experiment at a center-of-mass energy of 13 TeV, corresponding to an integrated luminosity of 1.7 fb−1, and confirmed in an additional sample of data collected at 8 TeV. Режим доступа: по договору с организацией-держателем ресурса |
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2017
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| Online Access: | https://doi.org/10.1103/PhysRevLett.119.112001 |
| Format: | Electronic Book Chapter |
| KOHA link: | https://koha.lib.tpu.ru/cgi-bin/koha/opac-detail.pl?biblionumber=656598 |