LHC Dark Matter Working Group: Next-generation spin-0 dark matter models

Abe, Tomohiro; Afik, Y.; Albert, A.; Anelli, C.; Barak, L.; Bauer, Martin; Behr, Janna Katharina; Bell, Nicole F.; Boveia, A.; Brandt, O.; Busoni, Giorgio; Carpenter, Linda M.; Chen, Yu Heng; Doglioni, C.; Elliot, Alison; Fujiwara, Motoko; Genest, M. H.; Gerosa, R.; Gori, Stefania; Gramling, J.; Grohsjean, A.; Gustavino, G.; Hahn, K. A.; Haisch, Ulrich; Henkelmann, L.; Hisano, Junji; Huitfeldt, Anders; Ippolito, V.; Kahlhoefer, Felix; Landsberg, G.; Lowette, S.; Maier, B.; Maltoni, Fabio; Muehlleitner, Margarete; No, José Miguel; Pani, P.; Polesello, G.; Price, D.; Robens, Tania; Rovelli, G.; Rozen, Y.; Sanderson, Isaac W.; Santos, Rui; Sevova, S.; Sperka, D.; Sung, K.; Tait, Tim M. P.; Terashi, K.; Ungaro, F. C.; Vryonidou, Eleni; Yu, S. S.; Wu, S. L.; Zhou, C.

doi:10.1016/j.dark.2019.100351

Cited by 97 publications

(199 citation statements)

References 141 publications

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“…We have then applied our analysis to three specific scalar extensions of the SM: i) a Higgs sector with two additional singlet scalars; ii) a 2HDM scenario; iii) the 2HDM plus a singlet scalar/pseudoscalar, which is currently a "de-facto" benchmark for dark matter searches at the LHC [70]. Comparing the reach of our proposed study to present LHC searches constraining these models, we explicitly show the parameter space regions that our search renders accessible, stressing its complementarity to existing searches.…”

Section: Discussionmentioning

confidence: 99%

“…This scenario captures the features of richer, more complicated scalar sectors than those analyzed in sections 5.1 and 5.2. At the same time, it is well-motivated as a simplified version of the NMSSM and as a portal to a dark matter sector [68][69][70]. As emphasized in [23], in this class of extended Higgs sectors the Higgs-to-Higgs cascade decays we discuss in this work are ubiquitous.…”

Section: Hdm + Singlet Scalar/pseudoscalarmentioning

confidence: 93%

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Enlarging the scope of resonant di-Higgs searches: hunting for Higgs-to-Higgs cascades in 4b final states at the LHC and future colliders

Barducci

Mimasu

et al. 2020

J. High Energ. Phys.

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We extend the coverage of resonant di-Higgs searches in the bbbb final state to the process pp → H 1 → H 2 H 2 → bbbb, where both H 1,2 are spin-0 states beyond the Standard Model. Such a process constitutes a joint discovery mode for the new states H 1 and H 2 . We present the first sensitivity study of this channel, using public LHC data to validate our analysis. We also provide a first estimate of the sensitivity of the search for the HL-LHC and future facilities like the HE-LHC and FCC-hh. We analyze the discovery potential of this search for several non-minimal scalar sector scenarios: an extension of the SM with two extra singlet scalar fields, the two-Higgs-doublet model and a two-Higgs doublet model plus a singlet, which captures the scalar potential features of the NMSSM. We find that this channel represents a novel, very powerful probe for extended Higgs sectors, offering complementary sensitivity to existing analyses.

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Section: Discussionmentioning

confidence: 99%

Section: Hdm + Singlet Scalar/pseudoscalarmentioning

confidence: 93%

Enlarging the scope of resonant di-Higgs searches: hunting for Higgs-to-Higgs cascades in 4b final states at the LHC and future colliders

Barducci

Mimasu

et al. 2020

J. High Energ. Phys.

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“…The model has been vastly explored in the literature (see e.g. [20,[31][32][33][34] and references therein, as well as [20,31,[34][35][36][37][38][39][40][41][42][43][44][45][46][47][48] for studies of LHC phenomenology). Signatures at colliders always render electroweak gauge bosons and missing transverse energy.…”

Section: Model Setup and Current Constraintsmentioning

confidence: 99%

Investigating extended scalar sectors at current and future colliders

Robens¹

2019

Proceedings of 7th Annual Conference on Large Hadron Collider Physics — PoS(LHCP2019)

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“…Different simplified models have been suggested by the LHC DM WG. 14,[40][41][42] As in the case of SUSY simplified models, it is assumed that any other new physics is at much higher energies than the energy scale accessible to the experiment, so that only the DM particles χ and the BSM mediator particle appear in addition to SM particles.…”

Section: Susy Modelsmentioning

confidence: 99%

“…Benchmark models follow recommendations by the LHC DM WG. [40][41][42] Fig. 24 presents two different interpretations.…”

Section: Comparison Of Dm Searches In Mediator Simplified Modelsmentioning

confidence: 99%

Supersymmetry and the collider dark matter picture

Lorenz

2019

Mod. Phys. Lett. A

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One of the key questions in particle physics and astrophysics is the nature of dark matter, which existence has been confirmed in many astrophysical and cosmological observations. Besides direct and indirect detection experiments, collider searches for dark matter offer the unique possibility to not only detect dark matter particles but in case of discovery to also study their properties by making statements about the potential underlying theory. The search program for dark matter at the ATLAS and CMS experiments at the Large Hadron Collider is comprehensive, and includes both supersymmetric dark matter candidates and other alternatives. This review presents the latest status in these searches, with special focus on supersymmetric dark matter particles. 0:49 WSPC/INSTRUCTION FILE SUSY˙DM˙collider˙3 Supersymmetry and the collider Dark Matter picture 3 in the decay of a mediator particle connecting SM and DM particles. A few example searches are illustrated in Sec. 6. A third class of models considers the direct decay of Higgs or Z bosons into DM particles (invisible Higgs-and Z boson decays). An example for searches for invisible Higgs decays is given in Sec. 7. A more extensive recent review on the non-SUSY DM searches at the LHC is given in Ref. 14. The searches, with different targets and interpretations, are complementary and provide a wide coverage of possible DM scenarios at colliders. A comparison of collider searches with DD experiments is given in Secs. 5 and 8.The LHC, ATLAS and CMS had two successful data-taking periods. In the first period (Run-1) from 2010-2012, pp-collisions at a center-of-mass energy of 7 and 8 TeV resulted in a total statistics of about 5 fb −1 at 7 TeV and 20 fb −1 at 8 TeV. After a technical stop with upgrades to the collider and detectors, pp-collisions at a center-of-mass energy of 13 TeV resumed in 2015 -2018. Due to the only recent end of this second data-taking period (Run-2) many analyses at ATLAS and CMS do not use the full dataset yet, but showed results with the partial 2015-2016 dataset amounting to about 36 fb −1 or the partial 2015-2017 dataset with about 80 fb −1 . Only recently, the first results using the full dataset of ∼ 140 fb −1 were presented by a small number of analyses. The dataset of Run-2 is significantly larger and at higher energy than the dataset in Run-1 and thus allows -as shown in the further course of this review -to perform certain searches for electroweakly produced SUSY particles for the first time at LHC experiments. Models in DM searchesDifferent models, depending on the underlying theory, are used in the design and interpretation of searches for DM particles at colliders. SupersymmetrySupersymmetry 15 introduces an additional symmetry between fermions and bosons and extends space-time symmetry. Of the different supersymmetric theories possible, only the low-energy realization of N = 1 SUSY might be accessible to present colliders. The most common considered model is the Minimal Supersymmetric Standard Model (MSSM) 16,17 which is the minimal p...

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LHC Dark Matter Working Group: Next-generation spin-0 dark matter models

Cited by 97 publications

References 141 publications

Enlarging the scope of resonant di-Higgs searches: hunting for Higgs-to-Higgs cascades in 4b final states at the LHC and future colliders

Enlarging the scope of resonant di-Higgs searches: hunting for Higgs-to-Higgs cascades in 4b final states at the LHC and future colliders

Investigating extended scalar sectors at current and future colliders

Supersymmetry and the collider dark matter picture

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