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http://hdl.handle.net/2445/133583| Title: | Observation of Excited Λ0b Baryons |
| Author: | Abellan Beteta, Carlos Calvo Gómez, Míriam Camboni, Alessandro Comerma Montells, Albert Domingo Bonal, Francesc Garrido Beltrán, Lluís Gascón Fora, David Grabalosa Gándara, Marc Graciani Díaz, Ricardo Graugés Pous, Eugeni López Asamar, Elias Pérez-Calero Yzquierdo, Antonio Picatoste Olloqui, Eduardo Pie Valls, B. (Blai) Potterat, Cédric Puig Navarro, Albert Roselló, M. Ruiz, Hugo (Ruiz Pérez) Vázquez Gómez, Ricard Vilasis-Cardona, Xavier LHCb Collaboration |
| Keywords: | Física de partícules Experiments Particle physics Experiments |
| Issue Date: | 26-Oct-2012 |
| Publisher: | American Physical Society |
| Abstract: | Using p p collision data corresponding to 1.0 fb − 1 integrated luminosity collected by the LHCb detector, two narrow states are observed in the Λ 0 b π + π − spectrum with masses 5911.97 ± 0.12 ( stat ) ± 0.02 ( syst ) ± 0.66 ( Λ 0 b mass ) MeV / c 2 and 5919.77 ± 0.08 ( stat ) ± 0.02 ( syst ) ± 0.66 ( Λ 0 b mass ) MeV / c 2 . The significances of the observations are 5.2 and 10.2 standard deviations, respectively. These states are interpreted as the orbitally excited Λ 0 b baryons, Λ * 0 b ( 5912 ) and Λ * 0 b ( 5920 ) . |
| Note: | Reproducció del document publicat a: https://doi.org/10.1103/PhysRevLett.109.172003 |
| It is part of: | Physical Review Letters, 2012, vol. 109, num. 17, p. 172003 |
| URI: | http://hdl.handle.net/2445/133583 |
| Related resource: | https://doi.org/10.1103/PhysRevLett.109.172003 |
| ISSN: | 0031-9007 |
| Appears in Collections: | Articles publicats en revistes (Enginyeria Electrònica i Biomèdica) Articles publicats en revistes (Institut de Ciències del Cosmos (ICCUB)) Articles publicats en revistes (Física Quàntica i Astrofísica) Articles publicats en revistes (Física de la Matèria Condensada) |
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