Observation of muonic Dalitz decays of chib mesons and precise spectroscopy of hidden-beauty states

The decays of the χb1(1P), χb2(1P), χb1(2P) and χb2(2P) mesons into the Υ(1S)µ +µ − fnal state are observed with a high signifcance using proton-proton collision data collected with the LHCb detector and corresponding to an integrated luminosity of 9 fb−1 . The newly observed decays together with th...

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Detalles Bibliográficos
Autores: Calefice, Lukas, Comerma Montells, Albert, Garcia Moreno, Paula, Garrido Beltrán, Lluís, Gioventù, Alessandra, Gironella Gironell, Pere, Gomez Fernandez, Sergio, Graugés Pous, Eugeni, Laguarta Gonzalez, P., Lobo Salvia, Aniol, López Huertas, Albert, Manera Escalero, Rafel, Marin Benito, Carla, Mauricio Ferre, Joan, Vazquez Gomez, Ricardo, Brossa Gonzalo, Arnau, Vidrier Villalba, Pol, LHCb Collaboration
Tipo de recurso: artículo
Estado:Versión publicada
Fecha de publicación:2024
País:España
Institución:Universidad de Barcelona
Repositorio:Dipòsit Digital de la UB
OAI Identifier:oai:diposit.ub.edu:2445/221862
Acceso en línea:https://hdl.handle.net/2445/221862
Access Level:acceso abierto
Palabra clave:Cromodinàmica quàntica
Hadrons
Física de partícules
Quantum chromodynamics
Particle physics
Descripción
Sumario:The decays of the χb1(1P), χb2(1P), χb1(2P) and χb2(2P) mesons into the Υ(1S)µ +µ − fnal state are observed with a high signifcance using proton-proton collision data collected with the LHCb detector and corresponding to an integrated luminosity of 9 fb−1 . The newly observed decays together with the Υ(2S) → Υ(1S)π +π − and Υ(3S) → Υ(2S)π +π − decay modes are used for precision measurements of the mass and mass splittings for the hidden-beauty states.