Search for long-lived particles decaying to photons and missing energy in proton-proton collisions at s√=7 TeV
(2013) Physics Letters. Section B: Nuclear, Elementary Particle and High-Energy Physics — Vol. 722, n° 4-5, p. 273-294 (2013)
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- Abstract
- Results are presented from a search for long-lived neutralinos decaying into a photon and an invisible particle, a signature associated with gauge-mediated supersymmetry breaking in supersymmetric models. The analysis is based on a View the MathML source sample of proton–proton collisions at View the MathML source, collected with the CMS detector at the LHC. The missing transverse energy and the time of arrival of the photon at the electromagnetic calorimeter are used to search for an excess of events over the expected background. No significant excess is observed, and lower limits at the 95% confidence level are obtained on the mass of the lightest neutralino, View the MathML source (for View the MathML source), as well as on the proper decay length of the lightest neutralino, View the MathML source (for View the MathML source).
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Citations
CMS Collaboration, Quertenmont, L., Basegmez, S., Bruno, G., Castello, R., Ceard, L., Delaere, C., Du Pree, T., Favart, D., Forthomme, L., Giammanco, A., Hollar, J., Lemaitre, V., Liao, J., Militaru, O., Nuttens, C., Pagano, D., Pin, A., Piotrzkowski, K., et al. (2013). Search for long-lived particles decaying to photons and missing energy in proton-proton collisions at s√=7 TeV. Physics Letters. Section B: Nuclear, Elementary Particle and High-Energy Physics, 722(4-5), 273-294. https://doi.org/10.1016/j.physletb.2013.04.027 (Original work published 2013)