2013/11/28 by A. Palano, Palano, Antimo
Physics and Astronomy · #FOS: Physical sciences #High Energy Physics - Experiment (hep-ex) #High-Energy Particle Collisions Research #Particle physics theoretical and experimental studies #Quantum Chromodynamics and Particle Interactions
paper · pdf · doi:10.48550/arxiv.1311.7364
openalex publication_date 2013/11/28 · openalex created_date 2025/10/10 · openalex updated_date 2026/07/28
A study of D+π-, D0 π+ and D*+π- final states is performed using pp collision data, corresponding to an integrated luminosity of 1.0 fb-1, collected at a centre-of-mass energy of 7 TeV with the LHCb detector. The D1(2420)0 resonance is observed in the D*+π- final state and the D^*2(2460) resonance is observed in the D+π-, D0 π+ and D*+π- final states. For both resonances, their properties and spin-parity assignments are obtained. In addition, two natural parity and two unnatural parity resonances are observed in the mass region between 2500 and 2800 MeV. Further structures in the region around 3000 MeV are observed in all the D*+π-, D+π- and D0 π+ final states. Using three- and four-body decays of D mesons produced in semileptonic b-hadron decays, precision measurements of D meson mass differences are made together with a measurement of the D0 mass.