667 citations · 19.9k across the 552 of their papers we have counts for
60 papers · 1 filter
Asymmetric Reheating of Dark QED
Simon Cléry, Jean Kimus, Michel H. G. Tytgat
We study in detail a scenario in which the inflaton scalar field couples to both a visible sector (VS) and a hidden sector (HS). The VS is assumed to contain the Standard Model (SM…
Constraining new physics in charm quark associated Higgs boson production events using the Standard Model effective field theory approach
Nordin Breugelmans, Felix Heyen, Jorgen D'Hondt +2
As the search for observable deviations from the Standard Model of particle physics remains to be of significant interest, effective field theory (EFT) continues to be a popular me…
Compact Stars as Portals to Extra-Dimensional Dark Matter
Raghuveer Garani, Chris Kouvaris, Michel H. G. Tytgat +1
We investigate hydrostatic configurations of asymmetric dark matter (DM) spheres in scenarios where fermionic DM can propagate into extra spatial dimensions, while Standard Model f…
On new physics off the Z peak in
Aliaksei Kachanovich, Jean Kimus, Steven Lowette +1
Motivated by a small but intriguing excess observed in the decay mode reported by both the ATLAS and CMS collaborations, we explore the possibility t…
t-channel dark matter at the LHC -- a whitepaper
Chiara Arina, Benjamin Fuks, Luca Panizzi +67
This report, summarising work achieved in the context of the LHC Dark Matter Working Group, investigates the phenomenology of -channel dark matter models, spanning minimal setup…
Energy-scaling behavior of intrinsic transverse momentum parameters in Drell-Yan simulation
CMS Collaboration
An analysis is presented based on models of the intrinsic transverse momentum (intrinsic ) of partons in nucleons by studying the dilepton transverse momentum in Drel…
Light from darkness: history of a hot dark sector
Rupert Coy, Jean Kimus, Michel H. G. Tytgat
We study a scenario in which the expansion of the Early Universe is driven by a hot hidden sector (HS) with an initial temperature that is significantly higher than that of th…
Dark matter from WIMP to FIMP over three regimes: Cosmology versus Colliders
Laura Lopez-Honorez, Quentin Decant, Sam Junius +1
Dark matter models can give rise to specific signatures at particle physics experiments or in cosmology. The details of the cosmological history can also influence the new physics…
The domain of a cannibal dark matter
Marco Hufnagel, Michel H. G. Tytgat
We consider a scenario in which the dark matter is alone in a hidden sector and consists of a real scalar particle with a manifest or spontaneously broken symmetry,…
Condensed dark matter with a Yukawa interaction
Raghuveer Garani, Michel H. G. Tytgat, Jérôme Vandecasteele
We explore the possible phases of a condensed dark matter (DM) candidate taken to be in the form of a fermion with a Yukawa coupling to a scalar particle, at zero temperature but a…
The domain of thermal dark matter candidates
Rupert Coy, Thomas Hambye, Michel H. G. Tytgat +1
We consider, in general terms, the possible parameter space of thermal dark matter candidates. We assume that the dark matter particle is fundamental and was in thermal equilibrium…
Strong dynamics and dark matter: investigating a minimal setup
Benjamin Fuks, Federica Giacchino, Laura Lopez-Honorez +2
We discuss the phenomenology of a dark matter scenario in which we extend the Standard Model by a real scalar particle and a vector-like heavy quark. Such a model can be seen as a…
Dark matter from dark photons: a taxonomy of dark matter production
Thomas Hambye, Michel H. G. Tytgat, Jérôme Vandecasteele +1
We analyse how dark matter (DM) can be produced in the early universe, working in the framework of a hidden sector charged under a U(1)' gauge symmetry and interacting with the Sta…
Forays into the dark side of the swamp
Iason Baldes, Debtosh Chowdhury, Michel H. G. Tytgat
Motivated by the swampland conjectures, we study cosmological signatures of a quintessence potential which induces time variation in the low energy effective field theory. After de…
SO(10) paths to dark matter
Sacha Ferrari, Thomas Hambye, Julian Heeck +1
The grand-unification gauge group SO(10) contains matter parity as a discrete subgroup. This symmetry could be at the origin of dark matter stability. The properties of the dark ma…
Direct Detection is testing Freeze-in
Thomas Hambye, Michel H. G. Tytgat, Jérôme Vandecasteele +1
Dark Matter (DM) may belong to a hidden sector that is only feebly interacting with the Standard Model (SM) and may have never been in thermal equilibrium in the Early Universe. In…
Radiative corrections to vectorlike portal dark matter
Stefano Colucci, Federica Giacchino, Michel H. G. Tytgat +1
A massive real scalar dark matter particle can couple to Standard Model leptons or quarks through a vector-like fermionic mediator , a scenario known as the Vector-like port…
Top-philic Vector-Like Portal to Scalar Dark Matter
Stefano Colucci, Benjamin Fuks, Federica Giacchino +3
We investigate the phenomenology of scalar singlet dark matter candidates that couple dominantly to the Standard Model via a Yukawa interaction with the top quark and a colored vec…
On Minimal Dark Matter coupled to the Higgs
Laura Lopez-Honorez, Michel H. G. Tytgat, Pantelis Tziveloglou +1
We provide a unified presentation of extensions of the Minimal Dark Matter framework in which new fermionic electroweak multiplets are coupled to each other via the Standard Model…
A Clockwork WIMP
Thomas Hambye, Daniele Teresi, Michel H. G. Tytgat
We embed a thermal dark matter (DM) candidate within the clockwork framework. This mechanism allows to stabilize the DM particle over cosmological time because it suppresses its de…
Signatures from Scalar Dark Matter with a Vector-like Quark Mediator
Federica Giacchino, Alejandro Ibarra, Laura Lopez Honorez +2
We present a comprehensive study of a model where the dark matter is composed of a singlet real scalar that couples to the Standard Model predominantly via a Yukawa interaction wit…
Simplified SIMPs and the LHC
Nadir Daci, Isabelle De Bruyn, Steven Lowette +2
The existence of Dark Matter (DM) in the form of Strongly Interacting Massive Particles (SIMPs) may be motivated by astrophysical observations that challenge the classical Cold DM…
Bremsstrahlung and Gamma Ray Lines in 3 Scenarios of Dark Matter Annihilation
Federica Giacchino, Laura Lopez-Honorez, Michel H. G. Tytgat
Gamma ray spectral features are of interest for indirect searches of dark matter (DM). Following Barger et al, we consider 3 simple scenarios of DM that annihilates into Standard M…
Invisible Z' and dark matter: LHC vs LUX constraints
Giorgio Arcadi, Yann Mambrini, Michel H. G. Tytgat +1
We consider a simple, yet generic scenario in which a new heavy gauge boson couples both to SM fermions and to dark matter. In this framework we confront the best LHC limits o…