A search for long-lived particles decaying to photons and weakly interacting particles, using proton-proton collision data at s=13 TeV collected by the CMS experiment in 2016-2017 is presented. The data set corresponds to an integrated luminosity of 77.4 fb-1. Results are interpreted in the context of supersymmetry with gauge-mediated supersymmetry breaking, where the neutralino is long-lived and decays to a photon and a gravitino. Limits are presented as a function of the neutralino proper decay length and mass. For neutralino proper decay lengths of 0.1, 1, 10, and 100 m, masses up to 320, 525, 360, and 215 GeV are excluded at 95% confidence level, respectively. We extend the previous best limits in the neutralino proper decay length by up to one order of magnitude, and in the neutralino mass by up to 100 GeV.

Search for long-lived particles using delayed photons in proton-proton collisions at s =13 TeV / Barbagli G.; Cassese A.; Ceccarelli R.; Ciulli V.; Civinini C.; D'Alessandro R.; Focardi E.; Latino G.; Lenzi P.; Meschini M.; Paoletti S.; Sguazzoni G.; Viliani L.. - In: PHYSICAL REVIEW D. - ISSN 2470-0010. - ELETTRONICO. - 100:(2019), pp. 0-0. [10.1103/PhysRevD.100.112003]

Search for long-lived particles using delayed photons in proton-proton collisions at s =13 TeV

Barbagli G.;Cassese A.;Ceccarelli R.;Ciulli V.;Civinini C.;D'Alessandro R.;Focardi E.;Latino G.;Lenzi P.;Viliani L.
2019

Abstract

A search for long-lived particles decaying to photons and weakly interacting particles, using proton-proton collision data at s=13 TeV collected by the CMS experiment in 2016-2017 is presented. The data set corresponds to an integrated luminosity of 77.4 fb-1. Results are interpreted in the context of supersymmetry with gauge-mediated supersymmetry breaking, where the neutralino is long-lived and decays to a photon and a gravitino. Limits are presented as a function of the neutralino proper decay length and mass. For neutralino proper decay lengths of 0.1, 1, 10, and 100 m, masses up to 320, 525, 360, and 215 GeV are excluded at 95% confidence level, respectively. We extend the previous best limits in the neutralino proper decay length by up to one order of magnitude, and in the neutralino mass by up to 100 GeV.
2019
100
0
0
Barbagli G.; Cassese A.; Ceccarelli R.; Ciulli V.; Civinini C.; D'Alessandro R.; Focardi E.; Latino G.; Lenzi P.; Meschini M.; Paoletti S.; Sguazzoni ...espandi
File in questo prodotto:
File Dimensione Formato  
PHYSICAL REVIEW D 100, 112003 (2019).pdf

accesso aperto

Descrizione: articolo principale
Tipologia: Versione finale referata (Postprint, Accepted manuscript)
Licenza: Open Access
Dimensione 560.51 kB
Formato Adobe PDF
560.51 kB Adobe PDF

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

Utilizza questo identificatore per citare o creare un link a questa risorsa: https://hdl.handle.net/2158/1195914
Citazioni
  • ???jsp.display-item.citation.pmc??? ND
  • Scopus 40
  • ???jsp.display-item.citation.isi??? 24
social impact