First observation of the decay D0→ K−π+µ+µ− in the ρ0-ω region of the dimuon mass spectrum

LHCb CollaborationGarrido Beltrán, LluísGascón Fora, DavidGraciani Díaz, RicardoGraugés Pous, EugeniMarin Benito, CarlaPicatoste Olloqui, EduardoRives Molina, Vicente José2020-05-062020-05-062015-10-280370-2693https://hdl.handle.net/2445/158846A study of the decay D0→K−π+μ+μ−D0→K−π+μ+μ− is performed using data collected by the LHCb detector in proton-proton collisions at a centre-of-mass energy of 8 TeV, corresponding to an integrated luminosity of 2.0 fb−12.0 fb−1. Decay candidates with muon pairs that have an invariant mass in the range 675-875 MeV/c2675-875 MeV/c2 are considered. This region is dominated by the ρ0ρ0 and ω resonances.10 p.application/pdfengcc-by (c) LHCb Collaboration et al., 2015http://creativecommons.org/licenses/by/3.0/esFísica de partículesExperimentsCol·lisions (Física nuclear)Particle physicsExperimentsCollisions (Nuclear physics)First observation of the decay D0→ K−π+µ+µ− in the ρ0-ω region of the dimuon mass spectruminfo:eu-repo/semantics/article6587202020-05-06info:eu-repo/semantics/openAccess