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http://hdl.handle.net/2445/186407| Title: | Study of the D 0 p amplitude in Λ b 0 → D 0 pπ - decays |
| Author: | LHCb Collaboration Camboni, Alessandro Coquereau, Samuel Garrido Beltrán, Lluís Gascón Fora, David Graciani Díaz, Ricardo Graugés Pous, Eugeni Marin Benito, Carla Picatoste Olloqui, Eduardo Rives Molina, Vicente José |
| Keywords: | Hadrons Gran Col·lisionador d'Hadrons Física de partícules Experiments Hadrons Large Hadron Collider (France and Switzerland) Particle physics Experiments |
| Issue Date: | May-2017 |
| Publisher: | Springer Verlag |
| Abstract: | An amplitude analysis of the decay Λ b 0 → D 0 pπ - is performed in the part of the phase space containing resonances in the D 0 p channel. The study is based on a data sample corresponding to an integrated luminosity of 3.0 fb-1 of pp collisions recorded by the LHCb experiment. The spectrum of excited Λ c + states that decay into D 0 p is studied. The masses, widths and quantum numbers of the Λc(2880)+ and Λc(2940)+ resonances are measured. The constraints on the spin and parity for the Λc(2940)+ state are obtained for the first time. A near-threshold enhancement in the D 0 p amplitude is investigated and found to be consistent with a new resonance, denoted the Λc(2860)+, of spin 3 /2 and positive parity. |
| Note: | Reproducció del document publicat a: https://doi.org/10.1007/JHEP05(2017)030 |
| It is part of: | Journal of High Energy Physics, 2017, vol. 2017, num. 30, p. 1-43 |
| URI: | http://hdl.handle.net/2445/186407 |
| Related resource: | https://doi.org/10.1007/JHEP05(2017)030 |
| ISSN: | 1126-6708 |
| Appears in Collections: | Articles publicats en revistes (Física Quàntica i Astrofísica) |
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| 677992.pdf | 2.22 MB | Adobe PDF | View/Open |
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