452 citations · 3.5k across the 64 of their papers we have counts for
16 papers · 1 filter
Dynamics of false vacuum bubbles with trapped particles
Marek Lewicki, Kristjan Müürsepp, Joosep Pata +3
We study the impact of the ambient fluid on the evolution of collapsing false vacuum bubbles by simulating the dynamics of a coupled bubble-particle system. A significant increase…
New fermions in the light of the
J. C. Criado, A. Djouadi, N. Koivunen +3
The very precise measurement of the anomalous magnetic moment of the muon, recently released by the Muon g-2 experiment at Fermilab, can serve to set stringent constraints on new p…
An effective field theory of the Delta-resonance
Juan Carlos Criado, Abdelhak Djouadi, Niko Koivunen +3
We present an effective field theory of the -resonance as an interacting Weinberg's field in the multi-spinor formalism. We derive its interactions with…
Confronting spin-3/2 and other new fermions with the muon g-2 measurement
Juan C. Criado, Abdelhak Djouadi, Niko Koivunen +3
The new measurement of the muon's anomalous magnetic moment released by the Muon g-2 experiment at Fermilab sets strong constraints on the properties of many new particles. Using a…
Higher-spin particles at high-energy colliders
Juan Carlos Criado, Abdelhak Djouadi, Niko Koivunen +2
Using an effective field theory approach for higher-spin fields, we derive the interactions of colour singlet and electrically neutral particles with a spin higher than unity, conc…
Dark matter of any spin -- an effective field theory and applications
Juan Carlos Criado, Niko Koivunen, Martti Raidal +1
We develop an effective field theory of a generic massive particle of any spin and, as an example, apply this to study higher-spin dark matter (DM). Our formalism does not introduc…
Boosting Ultraviolet Freeze-in in NO Models
Nicolás Bernal, Javier Rubio, Hardi Veermäe
We present a novel UV freeze-in mechanism for enhancing the dark matter abundance in cosmologies where inflation is followed by an epoch dominated by a fluid stiffer than radiation…
A frame independent classification of single field inflationary models
Laur Järv, Kristjan Kannike, Luca Marzola +5
Seemingly unrelated models of inflation that originate from different physical setups yield, in some cases, identical predictions for the currently constrained inflationary observa…
Evolving Planck Mass in Classically Scale-Invariant Theories
K. Kannike, M. Raidal, C. Spethmann +1
We consider classically scale-invariant theories with non-minimally coupled scalar fields, where the Planck mass and the hierarchy of physical scales are dynamically generated. The…
Gravitational Origin of Dark Matter
Eugeny Babichev, Luca Marzola, Martti Raidal +4
Observational evidence for the existence of Dark Matter is limited to its gravitational effects. The extensive program for dedicated searches has yielded null results so far, chall…
Polarization observables for millicharged particles in photon collisions
Emidio Gabrielli, Luca Marzola, Edoardo Milotti +1
Particles in a hidden sector can potentially acquire a small electric charge through their interaction with the Standard Model and can consequently be observed as millicharged part…
A SUSY Inspired Simplified Model for the 750 GeV Diphoton Excess
E. Gabrielli, K. Kannike, B. Mele +3
The evidence for a new singlet scalar particle from the 750 GeV diphoton excess, and the absence of any other signal of new physics at the LHC so far, suggest the existence of new…
Non-minimal CW inflation, electroweak symmetry breaking and the 750 GeV anomaly
Luca Marzola, Antonio Racioppi, Martti Raidal +2
We study whether the hinted 750 GeV resonance at the LHC can be a Coleman-Weinberg inflaton which is non-minimally coupled to gravity. Since the inflaton must couple to new charged…
Dark matter and spin-1 milli-charged particles
Emidio Gabrielli, Luca Marzola, Martti Raidal +1
New physics scenarios beyond the Standard Model predict the existence of milli-charged particles. So far, only spin-1/2 and spin-0 milli-charged particles have been considered in l…
Evidence for Dark Matter Self-Interactions via Collisionless Shocks in Cluster Mergers
Matti Heikinheimo, Martti Raidal, Christian Spethmann +1
While dark matter self-interactions may solve several problems with structure formation, so far only the effects of two-body scatterings of dark matter particles have been consider…
Anomalous Higgs-boson coupling effects in HWW production at the LHC
Emidio Gabrielli, Matti Heikinheimo, Luca Marzola +3
We study the LHC associated production of a Higgs boson and a W^+W^- vector-boson pair at 14 TeV, in the Standard Model and beyond. We consider different signatures corresponding t…