A search for long-lived particles decaying to displaced, nonprompt jets and missing transverse momentum is presented. The data sample corresponds to an integrated luminosity of 137 fb−1 of proton-proton collisions at a center-of-mass energy of 13 TeV collected by the CMS experiment at the CERN LHC in 2016–2018. Candidate signal events containing nonprompt jets are identified using the timing capabilities of the CMS electromagnetic calorimeter. The results of the search are consistent with the background prediction and are interpreted using a gauge-mediated supersymmetry breaking reference model with a gluino next-to-lightest supersymmetric particle. In this model, gluino masses up to 2100, 2500, and 1900 GeV are excluded at 95% confidence level for proper decay lengths of 0.3, 1, and 100 m, respectively. These are the best limits to date for such massive gluinos with proper decay lengths greater than ∼0.5 m.

Sirunyan, A., Tumasyan, A., Adam, W., Ambrogi, F., Bergauer, T., Brandstetter, J., et al. (2019). Search for long-lived particles using nonprompt jets and missing transverse momentum with proton-proton collisions at sqrt(s)=13TeV. PHYSICS LETTERS. SECTION B, 797(10 October 2019) [10.1016/j.physletb.2019.134876].

Search for long-lived particles using nonprompt jets and missing transverse momentum with proton-proton collisions at sqrt(s)=13TeV

Benaglia, A.;Beschi, A.;Brivio, F.;Ciriolo, V.;Dinardo, M. E.;Ghezzi, A.;Govoni, P.;Guzzi, L.;Malberti, M.;Monti, F.;Moroni, L.;Ortona, G.;Paganoni, M.;Ragazzi, S.;Tabarelli de Fatis, T.;Zuolo, D.;Lucchini, M. T.;De Guio, F.;
2019

Abstract

A search for long-lived particles decaying to displaced, nonprompt jets and missing transverse momentum is presented. The data sample corresponds to an integrated luminosity of 137 fb−1 of proton-proton collisions at a center-of-mass energy of 13 TeV collected by the CMS experiment at the CERN LHC in 2016–2018. Candidate signal events containing nonprompt jets are identified using the timing capabilities of the CMS electromagnetic calorimeter. The results of the search are consistent with the background prediction and are interpreted using a gauge-mediated supersymmetry breaking reference model with a gluino next-to-lightest supersymmetric particle. In this model, gluino masses up to 2100, 2500, and 1900 GeV are excluded at 95% confidence level for proper decay lengths of 0.3, 1, and 100 m, respectively. These are the best limits to date for such massive gluinos with proper decay lengths greater than ∼0.5 m.
Articolo in rivista - Articolo scientifico
Physics, LHC, CMS, Long Live Particles
English
2019
797
10 October 2019
134876
none
Sirunyan, A., Tumasyan, A., Adam, W., Ambrogi, F., Bergauer, T., Brandstetter, J., et al. (2019). Search for long-lived particles using nonprompt jets and missing transverse momentum with proton-proton collisions at sqrt(s)=13TeV. PHYSICS LETTERS. SECTION B, 797(10 October 2019) [10.1016/j.physletb.2019.134876].
File in questo prodotto:
Non ci sono file associati a questo prodotto.

I documenti in IRIS sono protetti da copyright e tutti i diritti sono riservati, salvo diversa indicazione.

Utilizza questo identificativo per citare o creare un link a questo documento: https://hdl.handle.net/10281/240547
Citazioni
  • Scopus 45
  • ???jsp.display-item.citation.isi??? 22
Social impact