Observation of New Ξ0c Baryons Decaying to Λ+cK−

Observation of New Ξ0c Baryons Decaying to Λ+cK−

Bibliographic Details
Parent link:	Physical Review Letters Vol. 124, iss. 22.— 2020.— [222001, 11 p.]
Corporate Authors:	Национальный исследовательский Томский политехнический университет Инженерная школа информационных технологий и робототехники Отделение автоматизации и робототехники (ОАР), Национальный исследовательский Томский политехнический университет Исследовательская школа физики высокоэнергетических процессов
Other Authors:	Aaij R. Roel, Adeva B. Bernardo, Adinolfi M. Marco, Aidala C. Christine, Kharisova A. E. Anastasiya Evgenjevna, Panshin G. L. Gennady Leonidovich, Strokov S. A. Sergey Aleksandrovich
Summary:	Title screen The Λ+cK− mass spectrum is studied with a data sample of pp collisions at a center-of-mass energy of 13 TeV corresponding to an integrated luminosity of 5.6 fb−1 collected by the LHCb experiment. Three Ξ0c states are observed with a large significance and their masses and natural widths are measured to be m[Ξc(2923)0]=2923.04±0.25±0.20±0.14 MeV, Γ[Ξc(2923)0]=7.1±0.8±1.8 MeV, m[Ξc(2939)0]=2938.55±0.21±0.17±0.14 MeV, Γ[Ξc(2939)0]=10.2±0.8±1.1 MeV, m[Ξc(2965)0]=2964.88±0.26±0.14±0.14 MeV, Γ[Ξc(2965)0]=14.1±0.9±1.3 MeV, where the uncertainties are statistical, systematic, and due to the limited knowledge of the Λ+c mass. The Ξc(2923)0 and Ξc(2939)0 baryons are new states. The Ξc(2965)0 state is in the vicinity of the known Ξc(2970)0 baryon; however, their masses and natural widths differ significantly.
Language:	English
Published:	2020
Subjects:	электронный ресурс труды учёных ТПУ
Online Access:	https://doi.org/10.1103/PhysRevLett.124.222001
Format:	Electronic Book Chapter
KOHA link:	https://koha.lib.tpu.ru/cgi-bin/koha/opac-detail.pl?biblionumber=662347

Internet

https://doi.org/10.1103/PhysRevLett.124.222001