17-22 April 2017
UZ Obergurgl
Europe/Zurich timezone

Search for top squark pair-production in the single-lepton channel in models with highly compressed mass spectra with the CMS experiment

21 Apr 2017, 19:20
UZ Obergurgl

UZ Obergurgl

University Center Obergurgl Gaisbergweg 5 6456 Obergurgl Austria
Young Scientist Forum Physics Beyond the Standard Model YSF


Navid K. Rad (Austrian Academy of Sciences (AT))


Supersymmetry (SUSY) is one of the most promising candidates to solve multiple problems with the Standard Model. In particular models with a compressed mass spectrum are highly motivated by naturalness arguments and cosmological constraints on the dark matter relic density. In this talk, a search for SUSY with a compressed mass spectrum using events with a high-momentum jet from initial state radiation, large missing transverse energy, and a low-momentum lepton is presented. In particular, a scenario of top squark pair-production is investigated, where the mass difference to the lightest SUSY particle (LSP) is smaller than the mass of the W boson. The search is performed in a sample of proton-proton collisions recorded with the CMS detector at a centre-of-mass energy of 13 TeV and the results are interpreted assuming a 100% branching fraction for the four-body decay of the top squark to a bottom quark, a fermion-antifermion pair and the LSP.

Primary authors

CMS Collaboration Navid K. Rad (Austrian Academy of Sciences (AT))

Presentation Materials