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http://hdl.handle.net/2445/185489
Title: | Observation of a New Excited Ds+ Meson in B0 →d-D+K+π-Decays |
Author: | LHCb Collaboration Garcia Moreno, P. Garrido Beltrán, Lluís Gironella Gironell, P. Gomez Fernandez, S. Graugés Pous, Eugeni Lobo Salvia, A. Mauricio, J. Vazquez Gomez, R. Marin Benito, Carla |
Keywords: | Hadrons Gran Col·lisionador d'Hadrons Física de partícules Experiments Hadrons Large Hadron Collider (France and Switzerland) Particle physics Experiments |
Issue Date: | 2021 |
Publisher: | American Physical Society |
Abstract: | Using pp collision data corresponding to an integrated luminosity of 5.4 fb−1 collected with the LHCb detector at a center-of-mass energy of 13 TeV, the B0 → D−DþKþπ− decay is studied. A new excited Dþ s meson is observed decaying into the DþKþπ− final state with large statistical significance. The pole mass and width, and the spin parity of the new state are measured with an amplitude analysis to be mR ¼ 2591 6 7 MeV, ΓR ¼ 89 16 12 MeV, and JP ¼ 0−, where the first uncertainty is statistical and the second systematic. Fit fractions for all components in the amplitude analysis are also reported. The new resonance, denoted as Ds0ð2590Þþ, is a strong candidate to be the Dsð21 S0Þþ state, the radial excitation of the pseudoscalar ground-state Dþ s meson. |
Note: | Reproducció del document publicat a: https://doi.org/10.1103/PhysRevLett.126.122002 |
It is part of: | Physical Review Letters, 2021, vol. 2021, p. 1-11 |
URI: | http://hdl.handle.net/2445/185489 |
Related resource: | https://doi.org/10.1103/PhysRevLett.126.122002 |
ISSN: | 0031-9007 |
Appears in Collections: | Articles publicats en revistes (Física Quàntica i Astrofísica) |
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