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We introduce a set of minimal simplified models for dark matter interactions with the Standard Model, connecting the two sectors via either a scalar or pseudoscalar particle. These models have a wider regime of validity for dark matter…

High Energy Physics - Phenomenology · Physics 2015-06-23 Matthew R. Buckley , David Feld , Dorival Goncalves

We study a new class of renormalisable simplified models for dark matter searches at the LHC that are based on two Higgs doublet models with an additional pseudoscalar mediator. In contrast to the spin-0 simplified models employed in…

High Energy Physics - Phenomenology · Physics 2017-08-23 Martin Bauer , Ulrich Haisch , Felix Kahlhoefer

This document outlines a set of simplified models for dark matter and its interactions with Standard Model particles. It is intended to summarize the main characteristics that these simplified models have when applied to dark matter…

High Energy Physics - Phenomenology · Physics 2016-03-24 Jalal Abdallah , Henrique Araujo , Alexandre Arbey , Adi Ashkenazi , Alexander Belyaev , Joshua Berger , Celine Boehm , Antonio Boveia , Amelia Brennan , Jim Brooke , Oliver Buchmueller , Matthew Buckley , Giorgio Busoni , Lorenzo Calibbi , Sushil Chauhan , Nadir Daci , Gavin Davies , Isabelle De Bruyn , Paul De Jong , Albert De Roeck , Kees de Vries , Daniele Del Re , Andrea De Simone , Andrea Di Simone , Caterina Doglioni , Matthew Dolan , Herbi K. Dreiner , John Ellis , Sarah Eno , Erez Etzion , Malcolm Fairbairn , Brian Feldstein , Henning Flaecher , Eric Feng , Patrick Fox , Marie-Hélène Genest , Loukas Gouskos , Johanna Gramling , Ulrich Haisch , Roni Harnik , Anthony Hibbs , Siewyan Hoh , Walter Hopkins , Valerio Ippolito , Thomas Jacques , Felix Kahlhoefer , Valentin V. Khoze , Russell Kirk , Andreas Korn , Khristian Kotov , Shuichi Kunori , Greg Landsberg , Sebastian Liem , Tongyan Lin , Steven Lowette , Robyn Lucas , Luca Malgeri , Sarah Malik , Christopher McCabe , Alaettin Serhan Mete , Enrico Morgante , Stephen Mrenna , Yu Nakahama , Dave Newbold , Karl Nordstrom , Priscilla Pani , Michele Papucci , Sophio Pataraia , Bjoern Penning , Deborah Pinna , Giacomo Polesello , Davide Racco , Emanuele Re , Antonio Walter Riotto , Thomas Rizzo , David Salek , Subir Sarkar , Steven Schramm , Patrick Skubic , Oren Slone , Juri Smirnov , Yotam Soreq , Timothy Sumner , Tim M. P. Tait , Marc Thomas , Ian Tomalin , Christopher Tunnell , Alessandro Vichi , Tomer Volansky , Neal Weiner , Stephen M. West , Monika Wielers , Steven Worm , Itay Yavin , Bryan Zaldivar , Ning Zhou , Kathryn Zurek

We consider simplified dark matter models where a dark matter candidate couples to the standard model (SM) particles via an $s$-channel spin-2 mediator, and study constraints on the model parameter space from the current LHC data. Our focus…

High Energy Physics - Phenomenology · Physics 2017-06-28 Sabine Kraml , Ursula Laa , Kentarou Mawatari , Kimiko Yamashita

The study of collision events with missing energy as searches for the dark matter (DM) component of the Universe are an essential part of the extensive program looking for new physics at the LHC. Given the unknown nature of DM, the…

Models in which dark matter particles communicate with the visible sector through a pseudoscalar mediator are well-motivated both from a theoretical and from a phenomenological standpoint. With direct detection bounds being typically…

High Energy Physics - Phenomenology · Physics 2017-07-25 Shankha Banerjee , Daniele Barducci , Geneviève Bélanger , Benjamin Fuks , Andreas Goudelis , Bryan Zaldivar

Non-minimal simplified extensions of the Standard Model have gained considerable currency in the context of dark matter searches at the LHC, since they predict enhanced mono-Higgs and mono-$W/Z$ signatures over large parts of the parameter…

High Energy Physics - Phenomenology · Physics 2022-08-10 Shankha Banerjee , Geneviève Bélanger , Disha Bhatia , Benjamin Fuks , Sreerup Raychaudhuri

Nowadays there is an active discussion about the definition of Simplified Models of Dark Matter (SMDM) as a tool for interpreting LHC searches. Here we point out an additional simplified set-up which captures a very well motivated mechanism…

High Energy Physics - Phenomenology · Physics 2015-05-20 Bryan Zaldivar

We consider simplified models for dark matter (DM) at the LHC, focused on mono-Higgs, -Z, or -b produced in the final state. Our primary purpose is to study the LHC reach of a relatively complete set of simplified models for these final…

High Energy Physics - Phenomenology · Physics 2017-11-06 Seng Pei Liew , Michele Papucci , Alessandro Vichi , Kathryn M. Zurek

We construct models of dark matter with suppressed spin-independent scattering cross section utilizing the existing simplified model framework. Even simple combinations of simplified models can exhibit interference effects that cause the…

High Energy Physics - Phenomenology · Physics 2016-05-30 Arghya Choudhury , Kamila Kowalska , Leszek Roszkowski , Enrico Maria Sessolo , Andrew J. Williams

We introduce a new set of simplified models to address the effects of 3-point interactions between the dark matter particle, its dark co-annihilation partner, and the Standard Model degree of freedom, which we take to be the tau lepton. The…

High Energy Physics - Phenomenology · Physics 2017-06-13 Valentin V. Khoze , Alexis D. Plascencia , Kazuki Sakurai

We outline and investigate a set of benchmark simplified models with the aim of providing a minimal simple framework for an interpretation of the existing and forthcoming searches of dark matter particles at the LHC. The simplified models…

High Energy Physics - Phenomenology · Physics 2015-03-18 Philip Harris , Valentin V. Khoze , Michael Spannowsky , Ciaran Williams

The use of simplified models as a tool for interpreting dark matter collider searches has become increasingly prevalent, and while early Run II results are beginning to appear, we look to see what further information can be extracted from…

High Energy Physics - Phenomenology · Physics 2016-05-25 A. J. Brennan , M. F. McDonald , J. Gramling , T. D. Jacques

We discuss universal signals of consistent models of pseudoscalar mediators for collider searches for Dark Matter. Keeping only the degrees of freedom that can not be decoupled due to consistency conditions, we present a universality class…

High Energy Physics - Phenomenology · Physics 2017-12-20 Martin Bauer , Martin Klassen , Valentin Tenorth

I discuss the construction of Simplified Models for Dark Matter searches at the LHC. After reviewing the phylosophy and some simple example, I turn the attention to the aspect of the theoretical consistency of these models.

High Energy Physics - Phenomenology · Physics 2017-11-03 Enrico Morgante

A consistent model for vector mediators to dark matter needs to be anomaly-free and include a scalar mode from mass generation. For the leading U(1) extensions we review the structure and constraints, including kinetic mixing at loop level.…

High Energy Physics - Phenomenology · Physics 2018-10-24 Martin Bauer , Sascha Diefenbacher , Tilman Plehn , Michael Russell , Daniel A. Camargo

We consider minimal dark matter scenarios featuring momentum-dependent couplings of the dark sector to the Standard Model. We derive constraints from existing LHC searches in the monojet channel, estimate the future LHC sensitivity for an…

In this work we compare the current experimental LHC limits of the 2HDM $+$ scalar and pseudoscalar for the $t \bar{t}$, mono-$Z$ and mono-$h$ signatures and forecast the reach of future LHC upgrades for the mono-$Z$ channel. Furthermore,…

High Energy Physics - Phenomenology · Physics 2021-02-22 Giorgio Arcadi , Giorgio Busoni , Thomas Hugle , Valentin Titus Tenorth

We study mono-W signals of dark matter (DM) production at the LHC, in the context of gauge invariant renormalizable models. We analyze two simplified models, one involving an s-channel Z' mediator and the other a t-channel colored scalar…

High Energy Physics - Phenomenology · Physics 2016-02-03 Nicole F. Bell , Yi Cai , Rebecca K. Leane
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