2026-04-14T02:36:09Zhttps://recercat.cat/oai/request

oai:recercat.cat:2445/1864162025-12-05T16:40:06Zcom_2072_1057col_2072_478823col_2072_478917

Updated search for long-lived particles decaying to jet pairs Camboni, Alessandro Coquereau, Samuel Fernandez, G. Garrido Beltrán, Lluís Gascón Fora, David Graciani Díaz, Ricardo Graugés Pous, Eugeni Marin Benito, Carla Picatoste Olloqui, Eduardo Rives Molina, Vicente José Sanchez Gonzalo, D. Alfonso Albero, Alejandro Calvo Gomez, M. Gironella Gironell, P. Vazquez Gomez, R. LHCb Collaboration Hadrons Gran Col·lisionador d'Hadrons Física de partícules Experiments Hadrons Large Hadron Collider (France and Switzerland) Particle physics Experiments A search is presented for long-lived particles with a mass between 25 and 50 GeV/c2 and a lifetime between 2 and 500 ps, using proton-proton collision data corresponding to an integrated luminosity of 2.0 fb^{-1}, collected by the LHCb detector at centre-of-mass energies of 7 and 8 TeV. The particles are assumed to be pair-produced in the decay of a 125 GeV/c2 Standard-Model-like Higgs boson. The experimental signature is a single long-lived particle, identified by a displaced vertex with two associated jets. No excess above background is observed and limits are set on the production cross-section as a function of the mass and lifetime of the long-lived particle. 2022-06-07T14:30:20Z 2022-06-07T14:30:20Z 2017-12 2022-06-07T14:30:21Z info:eu-repo/semantics/article info:eu-repo/semantics/publishedVersion 1434-6044 https://hdl.handle.net/2445/186416 678028 eng Reproducció del document publicat a: European Physical Journal C, 2017, vol. 77, num. 812, p. 14-38 cc-by (c) Camboni, A. et al., 2017 https://creativecommons.org/licenses/by/4.0/ info:eu-repo/semantics/openAccess 24 p. application/pdf Società Italiana di Fisica & Springer Verlag Articles publicats en revistes (Física Quàntica i Astrofísica)