9 papers
Dark Neutrons as Dark Matter: Collisions in Halos and Direct Detection from Dark CP Violation
Pablo Figueroa, Camilo GarcÃa-Cely, Giacomo Landini
We consider confining gauge theories with a non-vanishing topological angle , which induces CP-violating interactions among dark pions and dark baryons, with dark matter consis…
Constraints on a Light Leptophilic Scalar from Dark-Sector Couplings
Marco Graziani, Giacomo Landini, Federico Mescia +2
We study a minimal framework where a Majorana fermion dark matter particle interacts with a light scalar mediator coupled mainly to electrons. We examine both freeze-out and freeze…
Axion-Like Electrophilic Portal for Pion Dark Matter
Vincenzo Fiorentino, Ji-Heng Guo, Giacomo Landini +1
We investigate a scenario where Strongly Interacting Massive Particle (SIMP) dark matter interacts with an axion-like particle (ALP) that couples exclusively to electrons. This min…
Dark Matter in an Evanescent Three-Brane Randall-Sundrum Scenario
Andrea Donini, Miguel G. Folgado, Juan Herrero-GarcÃa +3
Apart from its gravitational interactions, dark matter (DM) has remained so far elusive in laboratory searches. One possible explanation is that the relevant interactions to explai…
High-quality Peccei-Quinn symmetry from the interplay of vertical and horizontal gauge symmetries
Luca Di Luzio, Giacomo Landini, Federico Mescia +1
We explore a class of axion models where an accidental Peccei-Quinn (PQ) symmetry automatically emerges from the interplay of vertical (grand-unified) and horizonta…
Dark matter in QCD-like theories with a theta vacuum: cosmological and astrophysical implications
Camilo GarcÃa-Cely, Giacomo Landini, Ãscar Zapata
QCD-like theories in which the dark matter (DM) of the Universe is hypothesized to be a thermal relic in the form of a dark pion has been extensively investigated, with most studie…