Observation of the Doubly Charmed Baryon Ξ++cc; Physical Review Letters; Vol. 119, iss. 4

Observation of the Doubly Charmed Baryon Ξ++cc; Physical Review Letters; Vol. 119, iss. 4

Dades bibliogràfiques
Parent link:Physical Review Letters: Scientific Journal.— , 1958-
Vol. 119, iss. 4.— 2017.— [112001, 10 p.]
Autor corporatiu: Национальный исследовательский Томский политехнический университет (ТПУ) Физико-технический институт (ФТИ) Кафедра прикладной физики (№ 12) (ПФ)
Altres autors: Aaij R. Roel, Adeva B. Bernardo, Adinolfi M., Ajaltouni Z. J. Zeina, Akar S. Simon, Vagner A. R. Aleksandr Rudolfovich
Sumari: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
Idioma:anglès
Publicat: 2017
Matèries:
электронный ресурс
труды учёных ТПУ
барионы
распад
Accés en línia:https://doi.org/10.1103/PhysRevLett.119.112001
Format: Electrònic Capítol de llibre
KOHA link:https://koha.lib.tpu.ru/cgi-bin/koha/opac-detail.pl?biblionumber=656598

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