423 citations · 2.5k across the 27 of their papers we have counts for
25 papers · 1 filter
Displaced Vertices from Pseudo-Dirac Dark Matter
Alessandro Davoli, Andrea De Simone, Thomas Jacques +1
Displaced vertices are relatively unusual signatures for dark matter searches at the LHC. We revisit the model of pseudo-Dirac dark matter (pDDM), which can accommodate the correct…
Evaporation and scattering of momentum- and velocity-dependent dark matter in the Sun
Giorgio Busoni, Andrea De Simone, Pat Scott +1
Dark matter with momentum- or velocity-dependent interactions with nuclei has shown significant promise for explaining the so-called Solar Abundance Problem, a longstanding discrep…
Geometric Baryogenesis from Shift Symmetry
Andrea De Simone, Takeshi Kobayashi, Stefano Liberati
We present a new scenario for generating the baryon asymmetry of the universe that is induced by a Nambu-Goldstone (NG) boson. The shift symmetry naturally controls the operators i…
Spontaneous Baryogenesis without Baryon Isocurvature
Andrea De Simone, Takeshi Kobayashi
We propose a new class of spontaneous baryogenesis models that does not produce baryon isocurvature perturbations. The baryon chemical potential in these models is independent of t…
Cosmological Aspects of Spontaneous Baryogenesis
Andrea De Simone, Takeshi Kobayashi
We investigate cosmological aspects of spontaneous baryogenesis driven by a scalar field, and present general constraints that are independent of the particle physics model. The re…
Limitation of EFT for DM interactions at the LHC
Giorgio Busoni
We generalize in several directions our recent analysis of the limitations to the use of the effective field theory approach to study dark matter at the LHC. Firstly, we study the…
Making the Most of the Relic Density for Dark Matter Searches at the LHC 14 TeV Run
Giorgio Busoni, Andrea De Simone, Thomas Jacques +2
As the LHC continues to search for new weakly interacting particles, it is important to remember that the search is strongly motivated by the existence of dark matter. In view of a…
On the Validity of the EFT for Dark Matter Searches at the LHC
Enrico Morgante
We review the limitations to the use of the effective field theory approach to study dark matter at the LHC. Due to the high energy reach, the low energy description breaks down, a…
On the Validity of the Effective Field Theory for Dark Matter Searches at the LHC Part III: Analysis for the -channel
Giorgio Busoni, Andrea De Simone, Thomas Jacques +2
We extend our recent analysis of the limitations of the effective field theory approach to studying dark matter at the LHC, by investigating the case in which Dirac dark matter cou…
Benchmarks for Dark Matter Searches at the LHC
Andrea De Simone, Gian Francesco Giudice, Alessandro Strumia
We propose some scenarios to pursue dark matter searches at the LHC in a fairly model-independent way. The first benchmark case is dark matter co-annihilations with coloured partic…
On the Validity of the Effective Field Theory for Dark Matter Searches at the LHC, Part II: Complete Analysis for the s-channel
Giorgio Busoni, Andrea De Simone, Johanna Gramling +2
We generalize in several directions our recent analysis of the limitations to the use of the effective field theory approach to study dark matter at the LHC. Firstly, we study the…
On the Validity of the Effective Field Theory for Dark Matter Searches at the LHC
Giorgio Busoni, Andrea De Simone, Enrico Morgante +1
We discuss the limitations to the use of the effective field theory approach to study dark matter at the LHC. We introduce and study a few quantities, some of them independent of t…
Interpretation of AMS-02 Results: Correlations among Dark Matter Signals
Andrea De Simone, Antonio Riotto, Wei Xue
The AMS-02 collaboration has recently released data on the positron fraction up to energies of about 350 GeV. If one insists on interpreting the observed excess as…
The Role of Electroweak Corrections for the Dark Matter Relic Abundance
Paolo Ciafaloni, Denis Comelli, Andrea De Simone +3
We analyze the validity of the theorems concerning the cancellation of the infrared and collinar divergences in the case of dark matter freeze-out in the early universe. In particu…
On the Minimum Dark Matter Mass Testable by Neutrinos from the Sun
Giorgio Busoni, Andrea De Simone, Wei-Chih Huang
We discuss a limitation on extracting bounds on the scattering cross section of dark matter with nucleons, using neutrinos from the Sun. If the dark matter particle is sufficiently…
A First Top Partner Hunter's Guide
Andrea De Simone, Oleksii Matsedonskyi, Riccardo Rattazzi +1
We provide a systematic effective lagrangian description of the phenomenology of the lightest top-partners in composite Higgs models. Our construction is based on symmetry, on sele…
Electroweak bremsstrahlung for wino-like Dark Matter annihilations
Paolo Ciafaloni, Denis Comelli, Andrea De Simone +2
If the Dark Matter is the neutral Majorana component of a multiplet which is charged under the electroweak interactions of the Standard Model, its main annihilation channel is into…
Electroweak lights from Dark Matter annihilations
Andrea De Simone
The energy spectra of Standard Model particles originated from Dark Matter annihilations can be significantly altered by the inclusion of electroweak gauge boson radiation from the…
Initial State Radiation in Majorana Dark Matter Annihilations
Paolo Ciafaloni, Marco Cirelli, Denis Comelli +3
The cross section for a Majorana Dark Matter particle annihilating into light fermions is helicity suppressed. We show that, if the Dark Matter is the neutral Majorana component of…
Magnetic Fields at First Order Phase Transition: A Threat to Electroweak Baryogenesis
Andrea De Simone, Germano Nardini, Mariano Quiros +1
The generation of the observed baryon asymmetry may have taken place during the electroweak phase transition, thus involving physics testable at LHC, a scenario dubbed electroweak…
Supersymmetric Leptogenesis with a Light Hidden Sector
Andrea De Simone, Mathias Garny, Alejandro Ibarra +1
Supersymmetric scenarios incorporating thermal leptogenesis as the origin of the observed matter-antimatter asymmetry generically predict abundances of the primordial elements whic…
Pseudo-Dirac Dark Matter Leaves a Trace
Andrea De Simone, Veronica Sanz, Hiromitsu Phil Sato
Pseudo-Dirac Dark Matter is a viable type of dark matter which originates from a new Dirac fermion whose two Weyl states get slightly split in mass by a small Majorana term. The de…
Leptogenic Supersymmetry at the LHC
Andrea De Simone
Leptogenic Supersymmetry is a scenario characterized by copious lepton production in cascade decays. Due to the high lepton multiplicity and the lack of significant missing energy,…
Running Inflation in the Standard Model
Andrea De Simone, Mark P. Hertzberg, Frank Wilczek
An interacting scalar field with largish coupling to curvature can support a distinctive inflationary universe scenario. Previously this has been discussed for the Standard Model H…