14.2k citations
Counting papers with at most 25 authors, so collaboration author lists do not stand in for the people here.
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18 papers · 2 filters
Closing in on new chiral leptons at the LHC
Daniele Barducci, Luca Di Luzio, Marco Nardecchia +1
We study the phenomenological viability of chiral extensions of the Standard Model, with new chiral fermions acquiring their mass through interactions with a single Higgs. We exami…
The Minimal Massive Majoron Seesaw Model
Arturo de Giorgi, Luca Merlo, Xavier Ponce Díaz +1
A convincing explanation of the smallness of neutrino masses is represented by the Type-I Seesaw mechanism, where the two measured neutrino mass differences can be generated by int…
Third-Family Lepton-Quark Fusion
Arman Korajac, Peter Krack, Nudzeim Selimovic
We analyze the signatures of new physics scenarios featuring third-family quark-lepton unification at the TeV scale in lepton-quark fusion at hadron colliders. Working with complet…
The Chiral Lagrangian of CP-Violating Axion-Like Particles
Luca Di Luzio, Gabriele Levati, Paride Paradisi
We discuss the construction of the most general CP-violating chiral Lagrangian for an axion-like particle (ALP). Starting with an effective Lagrangian containing light quarks and g…
Dark Radiation from the Primordial Thermal Bath in Momentum Space
Francesco D'Eramo, Fazlollah Hajkarim, Alessandro Lenoci
Motivated by the stunning projections for future CMB surveys, we evaluate the amount of dark radiation produced in the early Universe by two-body decays or binary scatterings with…
Super-slow phase transition catalyzed by BHs and the birth of baby BHs
Ryusuke Jinno, Jun'ya Kume, Masaki Yamada
We discuss the unique phenomenology of first-order phase transitions catalyzed by primordial black holes (BHs). If the number of BHs within one Hubble volume is smaller than unity…
Anharmonic Effects on the Squeezing of Axion Perturbations
Valentina Danieli, Takeshi Kobayashi, Nicola Bartolo +2
It is assumed in standard cosmology that the Universe underwent a period of inflation in its earliest phase, providing the seeds for structure formation through vacuum fluctuations…
Axion inflation in the strong-backreaction regime: decay of the Anber-Sorbo solution
Richard von Eckardstein, Marco Peloso, Kai Schmitz +2
Axion inflation coupled to Abelian gauge fields via a Chern-Simons-like term of the form represents an attractive inflationary model with a rich phenomenology, includ…
On the oscillating electric dipole moment induced by axion-fermion couplings
Luca Di Luzio, Hector Gisbert, Philip Sørensen
It has been recently claimed that the axion coupling to fermions is responsible for an oscillating electric dipole moment (EDM) in the background of axion dark matter. In this work…
Two-loop Vertices with Vacuum Polarization Insertion
Taushif Ahmed, Giulio Crisanti, Federico Gasparotto +2
We present the analytic evaluation of the second-order corrections to the massive form factors, due to two-loop vertex diagrams with a vacuum polarization insertion, with exact dep…
Modular invariance and the QCD angle
Ferruccio Feruglio, Alessandro Strumia, Arsenii Titov
String compactifications on an orbi-folded torus with complex structure give rise to chiral fermions, spontaneously broken CP, modular invariance. We show that this allows simple e…
Axion Helioscopes as Solar Thermometers
Sebastian Hoof, Joerg Jaeckel, Lennert J. Thormaehlen
Axions, if discovered, could serve as a powerful new messenger for studying astrophysical objects. In this study we show how the Sun's spatial and spectral "axion image" can be inv…
Terrestrial detection of hidden vectors produced by solar nuclear reactions
Francesco D'Eramo, Giuseppe Lucente, Newton Nath +1
Solar nuclear reactions can occasionally produce sub-MeV elusive beyond the Standard Model particles that escape the solar interior without further interactions. This study focuses…
Goodness of fit by Neyman-Pearson testing
Gaia Grosso, Marco Letizia, Maurizio Pierini +1
The Neyman-Pearson strategy for hypothesis testing can be employed for goodness of fit if the alternative hypothesis is selected from data by exploring a rich parametrised family o…
Running effects on QCD axion phenomenology
Luca Di Luzio, Maurizio Giannotti, Federico Mescia +3
We study the impact of renormalization group effects on QCD axion phenomenology. Focusing on the DFSZ model, we argue that the relevance of running effects for the axion couplings…
On the IR/UV flavour connection in non-universal axion models
Luca Di Luzio, Alfredo Walter Mario Guerrera, Xavier Ponce Díaz +1
Non-universal axion models, with the Peccei-Quinn (PQ) symmetry acting on Standard Model (SM) fermions in a generation-dependent way, are typically accompanied by two different sou…
Fermion masses, critical behavior and universality
Ferruccio Feruglio
We look for signals of critical behavior in the Yukawa sector. By reviewing a set of models for the fermion masses, we select those where a symmetry-breaking order parameter sits a…
Lepton and -boson mass anomalies in the DFSZ axion model
Moslem Ahmadvand, Fazlollah Hajkarim
With regard to the leptonic magnetic dipole moment anomaly as well as the -boson mass excess, we study the DFSZ axion model. Considering theoretical and experimental constraints…