CheckMATE: Confronting your favourite new physics model with LHC data

Drees, Manuel; Dreiner, Herbert K.; Kim, Jong Soo; Schmeier, Daniel; Tattersall, Jamie

doi:10.1016/j.cpc.2014.10.018

Cited by 304 publications

(329 citation statements)

References 50 publications

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“…In both Region A and Region B we take model point grid with m A ∈ [20,200] GeV and m H ∈ [140, 320] GeV both with 20 GeV steps, that is, 100 model points for each region. We generate the 50,000 signal events with MadGraph [41] for each parameter point and interfaced to CheckMATE 1.2.0-beta [42] for checking the current bound with 20 fb −1 data at 8 TeV LHC. The analyses implemented in the CheckMATE are listed in the table 2.…”

Section: Current Constraintsmentioning

confidence: 99%

LHC τ -rich tests of lepton-specific 2HDM for (g − 2) μ

Chun

Kang

Takeuchi

et al. 2015

J. High Energ. Phys.

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The lepton-sepcific (or type X) 2HDM (L2HDM) is an attractive new physics candidate explaining the muon g − 2 anomaly requiring a light CP-odd boson A and large tan β. This scenario leads to τ -rich signatures, such as 3τ , 4τ and 4τ + W/Z, which can be readily accessible at the LHC. We first study the whole L2HDM parameter space to identify allowed regions of extra Higgs boson masses as well as two couplings λ hAA and ξ l h which determine the 125 GeV Higgs boson decays h → τ + τ − and h → AA/AA * (τ + τ − ), respectively. This motivates us to set up two regions of interest: (A) m A m H ∼ m H ± , and (B) m A ∼ m H ± ∼ O(100)GeV m H , for which derive the current constraints by adopting the chargino-neutralino search at the LHC8, and then analyze the LHC14 prospects by implementing τ -tagging algorithm. A correlated study of the upcoming precision determination of the 125 GeV Higgs boson decay properties as well as the observation of multi-tau events at the next runs of LHC will be able to shed light on the L2HDM option for the muon g − 2.

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Section: Current Constraintsmentioning

confidence: 99%

LHC τ -rich tests of lepton-specific 2HDM for (g − 2) μ

Chun

Kang

Takeuchi

et al. 2015

J. High Energ. Phys.

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“…The SRs described above have been implemented by CheckMATE [75,76], and the involved cross sections are calculated by the code PROSPINO2 [77]. 3 After these procedures, we can determine whether the model points survive the constraints from the direct searches.…”

Section: Jhep03(2016)207mentioning

confidence: 99%

Testing the light dark matter scenario of the MSSM at the LHC

Cao

Shang

et al. 2016

J. High Energ. Phys.

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In the light dark matter (DM) scenario of the MSSM, the DM relic density puts non-trivial requirements on the spectrum of supersymmetric particles. As a result, the direct search for multi-lepton signals at the LHC has great impact on the scenario. In this work, we concentrate on the searches for sleptons and electroweak-inos at the LHC, investigate their constraints on the light DM scenario with the 8 TeV LHC data, and also study their capability to test the scenario at the 14 TeV LHC. For this purpose, we first get the samples of the scenario by scanning the vast parameter space of the MSSM with various available constraints considered. Then for the surviving samples, we simulate the 2l +E miss T signal from slepton pair production process and the 2l + E miss T and 3l + E miss T signals from chargino and neutralino associated production processes at both the 8 TeV LHC and the 14 TeV LHC. Our simulations indicate that the 8 TeV LHC data have excluded a sizable portion of the samples, and the capability of the 14 TeV LHC will be much more powerful in testing the scenario. For example, in case that no excess of the multi-lepton signals is observed at the 14 TeV LHC, most samples of the light DM scenario will be excluded, especially a lower limit on the lightest neutralino mass will be set at 42 GeV and 44 GeV with 30 fb −1 and 100 fb −1 data respectively, and this limit can be further pushed up to 55 GeV with 300 fb −1 data.

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“…Among the several high energy physics tools have been developed which allow to reinterpret the results from the experimental collaborations at the LHC we have chosen the package CheckMATE [47][48][49], which allows to obtain exclusion limits on simplified models of NP based on an increasing number of ATLAS and CMS analyses. This package applies to the events generated by the user the same selection cuts as in each of the included analyses by the experimental collaborations using the fast detector simulator DELPHES [91].…”

Section: Collider Limitsmentioning

confidence: 99%

“…A more precise limit can be obtained reinterpreting the recent SUSY searches in the framework of simplified models with help of some of the recent high energy physics tools. The package CheckMATE [47][48][49] allows to obtain exclusion limits on supersymmetric simplified models based on an increasing number of ATLAS and CMS analyses. It also allows to implement new physics models, resulting in exclusion limits based on the collider signatures of the experimental analyses.…”

Section: Introductionmentioning

confidence: 99%

Radiative type III seesaw model and its collider phenomenology

et al. 2016

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We analyze the present bounds of a scotogenic model, the Radiative Type III Seesaw (RSIII), in which an additional scalar doublet and at least two fermion triplets of SU (2) L are added to the Standard Model (SM). In the RSIII the new physics (NP) sector is odd under an exact global Z 2 symmetry. This symmetry guaranties that the lightest NP neutral particle is stable, providing a natural dark matter (DM) candidate, and leads to naturally suppressed neutrino masses generated by a one-loop realization of an effective Weinberg operator. We focus on the region with the highest sensitivity in present and future LHC searches, with light scalar DM and at least one NP fermion triplet at the sub-TeV scale. This region allows for significant production cross-sections of NP fermion pairs at the LHC. We reinterpret a set of searches for supersymmetric particles at the LHC obtained using the package CheckMATE, to set limits on our model as a function of the masses of the NP particles and their Yukawa interactions. The most sensitive search channel is found to be dileptons plus missing transverse energy. In order to target the case of tau enhanced decays and the case of compressed spectra we reinterpret the recent slepton and chargino search bounds by ATLAS. For a lightest NP fermion triplet with a maximal branching ratio to either electrons or muons we exclude NP fermion masses of up to 650 GeV, while this bound is reduced to approximately 400 GeV in the tau-philic case. Allowing for a general flavor structure we set limits on the Yukawa couplings, which are directly related to the neutrino flavor structure.

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CheckMATE: Confronting your favourite new physics model with LHC data

Cited by 304 publications

References 50 publications

LHC τ -rich tests of lepton-specific 2HDM for (g − 2) μ

LHC τ -rich tests of lepton-specific 2HDM for (g − 2) μ

Testing the light dark matter scenario of the MSSM at the LHC

Radiative type III seesaw model and its collider phenomenology

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