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Updated search for long-lived particles decaying to jet pairs


LHCb Collaboration; Bernet, R; Müller, K; Serra, N; Steinkamp, O; Straumann, U; Vollhardt, A; et al (2017). Updated search for long-lived particles decaying to jet pairs. European Physical Journal C - Particles and Fields, C77(12):812.

Abstract

A search is presented for long-lived particles with a mass between 25 and 50GeV/$c^2$ 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 125GeV/$c^2$ 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.

Abstract

A search is presented for long-lived particles with a mass between 25 and 50GeV/$c^2$ 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 125GeV/$c^2$ 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.

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Item Type:Journal Article, refereed, original work
Communities & Collections:07 Faculty of Science > Physics Institute
Dewey Decimal Classification:530 Physics
Language:English
Date:2017
Deposited On:29 Jan 2018 14:31
Last Modified:19 Feb 2018 10:44
Publisher:Springer
ISSN:1434-6044
OA Status:Gold
Free access at:Publisher DOI. An embargo period may apply.
Publisher DOI:https://doi.org/10.1140/epjc/s10052-017-5178-x

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