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Title: Search for long-lived particles decaying to jet pairs
Author: Garrido Beltrán, Lluís
Gascón Fora, David
Graciani Díaz, Ricardo
Graugés Pous, Eugeni
Marin Benito, Carla
Picatoste Olloqui, Eduardo
Rives Molina, Vicente José
Ruiz, Hugo (Ruiz Pérez)
LHCb Collaboration
Keywords: Bosons de Higgs
Física de partícules
Higgs bosons
Particle physics
Issue Date: 1-Apr-2015
Publisher: Società Italiana di Fisica & Springer Verlag
Abstract: A search is presented for long-lived particles with a mass between 25 and 50 GeV/c2 and a lifetime between 1 and 200ps in a sample of proton-proton collisions at a centre-of-mass energy of s√=7 TeV, corresponding to an integrated luminosity of 0.62 fb −1, collected by the LHCb detector. The particles are assumed to be pair-produced by the decay of a standard model-like Higgs boson. The experimental signature of the long-lived particle is a displaced vertex with two associated jets. No excess above the background is observed and limits are set on the production cross-section as a function of the long-lived particle mass and lifetime.
Note: Reproducció del document publicat a:
It is part of: European Physical Journal C, 2015, vol. 75, num. 152
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ISSN: 1434-6044
Appears in Collections:Articles publicats en revistes (Física Quàntica i Astrofísica)

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