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Title: | Observation of Overlapping Spin-1 and Spin-3 ¯D0K− Resonances at Mass 2.86 GeV/c2 |
Author: | Badalov, Alexey Calvo Gómez, Míriam Garrido Beltrán, Lluís Graciani Díaz, Ricardo Graugés Pous, Eugeni Marin Benito, Carla Picatoste Olloqui, Eduardo Rives Molina, Vicente José Ruiz, Hugo (Ruiz Pérez) Vilasis-Cardona, Xavier LHCb Collaboration |
Keywords: | Física de partícules Experiments Particle physics Experiments |
Issue Date: | 14-Oct-2014 |
Publisher: | American Physical Society |
Abstract: | The resonant substructure of B 0 s → ¯ D 0 K − π + decays is studied using a data sample corresponding to an integrated luminosity of 3.0 fb − 1 of p p collision data recorded by the LHCb detector. An excess at m ( ¯ D 0 K − ) ≈ 2.86 GeV / c 2 is found to be an admixture of spin-1 and spin-3 resonances. Therefore, the D ∗ s J ( 2860 ) − state previously observed in inclusive e + e − → ¯ D 0 K − X and p p → ¯ D 0 K − X processes consists of at least two particles. This is the first observation of a heavy flavored spin-3 resonance, and the first time that any spin-3 particle has been seen to be produced in B decays. The masses and widths of the new states and of the D ∗ s 2 ( 2573 ) − meson are measured, giving the most precise determinations to date. |
Note: | Reproducció del document publicat a: https://doi.org/10.1103/PhysRevLett.113.162001 |
It is part of: | Physical Review Letters, 2014, vol. 113, num. 16, p. 162001 |
URI: | http://hdl.handle.net/2445/133202 |
Related resource: | https://doi.org/10.1103/PhysRevLett.113.162001 |
ISSN: | 0031-9007 |
Appears in Collections: | Articles publicats en revistes (Física Quàntica i Astrofísica) Articles publicats en revistes (Institut de Ciències del Cosmos (ICCUB)) |
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