Observation of Excited Λ0b Baryons
Publication date
2012-10-26Abstract
Using pp collision data corresponding to 1.0 fb−1 integrated luminosity collected by the LHCb detector, two narrow states are observed in the Λ0bπ+π− spectrum with masses 5911.97±0.12(stat)±0.02(syst)±0.66(Λ0b mass) MeV/c2 and 5919.77±0.08(stat)±0.02(syst)±0.66(Λ0b mass) MeV/c2. The significances of the observations are 5.2 and 10.2 standard deviations, respectively. These states are interpreted as the orbitally excited Λ0b baryons, Λ*0b(5912) and Λ*0b(5920).
Document Type
Article
Published version
Language
English
Keywords
Gran col·lisionador d'hadrons (França i Suïssa)
Partícules (Física nuclear)
Col·lisions (Física nuclear)
Pages
8 p.
Publisher
American Physical Society
Is part of
Physical Review Letters, 2012, Vol. 109, No. 7 (Octubre)
This item appears in the following Collection(s)
Rights
© CERN
Except where otherwise noted, this item's license is described as http://creativecommons.org/licenses/by/4.0/
