CheckMATE: Confronting your Favourite New Physics Model with LHC Data

The Higgs properties in the MSSM after the LHC Run-2

“…(3) The LHC Run-1 data from the direct 22 separate ATLAS searches [24], including, 2 followed by the decays χ± 1 → χ0 1 W ) and χ0 2 → χ0 1 Z). We use the package CheckMate 1.2.2 [26] to recast the LHC 3 (e or µ) + 0jet + / E T inclusive process.…”

Heavy MSSM Higgs Interpretation of the LHC Run I Data

“…The observables included in the fit are the Higgs-boson mass, the Higgs signal rates (evaluated with HiggsSignals [28]), Higgs exclusion bounds from LEP, Tevatron and the LHC (evaluated with HiggsBounds [29]), SUSY exclusion bounds from the LEP and the LHC (the latter evaluated with CheckMate [30]), and several low-energy observables (LEOs): BR(B → X s γ), BR(B s → µ + µ − ) and BR(B u → τν τ ) (evaluated with SuperIso [31]), (g − 2) µ (evaluated with SuperIso and FeynHiggs), and M W (with an evaluation based on Ref. [32]).…”

Spying an invisible Higgs boson

“…All signal and background samples were produced by Sherpa [18] with additional matrix element jets matched using the CKKW algorithm [19]. The events are then passed through the Delphes detector simulation [20] with advanced parameterizations of the ATLAS electron, muon and tau reconstruction and identification algorithms given by the CheckMate tune [21]. The final state jets are clustered using the anti-k T algorithm in FastJet [22] with R = 0.4.…”

“…In particular the multi-jet background where one jet is highly mis-measured leading to a large / p T signal is very effectively reduced by the ∆φ / p T ,j cut. Our signal events have to pass a lepton veto, implemented in CheckMate [21]. The electron reconstruction uses the ATLAS 'loose' working point and is parametrized as a function of p T and η.…”