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http://hdl.handle.net/2445/185665| Title: | Quantum numbers of the X (3872 ) state and orbital angular momentum in its ρ0J /ψ decay |
| Author: | Badalov, A. Casanova Mohr, R. Garrido Beltrán, Lluís Gascón Fora, David Graciani Diaz, Ricardo Graugés Pous, Eugeni Marin Benito, Carla Olloqui, E. Picatoste Molina, V. Rives Ruiz, Hugo LHCb collaboration |
| Keywords: | Hadrons Gran Col·lisionador d'Hadrons Física de partícules Experiments Hadrons Large Hadron Collider (France and Switzerland) Particle physics Experiments |
| Issue Date: | 30-Jul-2015 |
| Publisher: | American Physical Society |
| Abstract: | Angular correlations in B+ → X(3872)K+ decays, with X(3872) → ρ 0J/ψ, ρ 0 → π +π − and J/ψ → µ +µ −, are used to measure orbital angular momentum contributions and to determine the J P C value of the X(3872) meson. The data correspond to an integrated luminosity of 3.0 fb−1 of proton-proton collisions collected with the LHCb detector. This determination, for the first time performed without assuming a value for the orbital angular momentum, confirms the quantum numbers to be J P C = 1++. The X(3872) is found to decay predominantly through S wave and an upper limit of 4% at 95% C.L. is set on the D-wave contribution. |
| Note: | Reproducció del document publicat a: https://doi.org/10.1103/PhysRevD.92.011102 |
| It is part of: | Physical Review D, 2015, vol. 92, num. 011102, p. 1-24 |
| URI: | http://hdl.handle.net/2445/185665 |
| Related resource: | https://doi.org/10.1103/PhysRevD.92.011102 |
| ISSN: | 2470-0010 |
| Appears in Collections: | Articles publicats en revistes (Física Quàntica i Astrofísica) |
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| 656764.pdf | 523.93 kB | Adobe PDF | View/Open |
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