115 citations · 637 across the 18 of their papers we have counts for
20 papers
Darkly Charged ALPs
Nicolás M. Arenaza, Enrique Fernández-Martínez, Belén Gavela +4
The established ALP effective Lagrangian describes the interaction of scalars with approximate shift-symmetry which carry no Standard Model (SM) charges with SM fields. It im…
Taming forward scattering singularities in partial waves
Marta Fuentes Zamoro, Benjamín Grinstein, Pablo Quílez
Perturbative partial-wave amplitudes diverge in cases with a massless exchanged particle in the -channel. We argue that the divergence is an artifact of perturbation theory and…
ALP contribution to the Strong CP problem
Victor Enguita, Belen Gavela, Benjamin Grinstein +1
We compute the one-loop contribution to the -parameter of an axion-like particle (ALP) with CP-odd derivative couplings. Its contribution to the neutron electric dipole mome…
Hilbert series for covariants and their applications to Minimal Flavor Violation
Benjamín Grinstein, Xiaochuan Lu, Luca Merlo +1
We elaborate how to apply the Hilbert series method to enumerating group covariants, which transform under any given representation, including but going beyond group invariants. Ma…
The QCD axion sum rule
Belén Gavela, Pablo Quílez, Maria Ramos
We demonstrate that the true QCD axion that solves the strong CP problem can be found in all generality outside the customary standard QCD band, with QCD being the sole source of P…
On discrete Goldstone bosons
Victor Enguita-Vileta, Belen Gavela, Rachel Houtz +1
Exact discrete symmetries, if non-linearly realized, can reduce the ultraviolet sensitivity of a given theory. The scalars stemming from spontaneous symmetry breaking are massive w…
Axion dark matter from frictional misalignment
Alexandros Papageorgiou, Pablo Quílez, Kai Schmitz
We study the impact of sphaleron-induced thermal friction on the axion dark-matter abundance due to the interaction of an axion-like particle (ALP) with a dark non-abelian gauge se…
Discrete Goldstone Bosons
Victor Enguita Vileta, Belen Gavela, Rachel Houtz +1
Exact discrete symmetries, if non-linearly realized, can reduce the ultraviolet sensitivity of a given theory. The scalars stemming from spontaneous symmetry breaking are massive w…
ALP Searches at the LHC: FASER as a Light Shining through Walls Experiment
Felix Kling, Pablo Quílez
We propose the use of FASER as a light-shining-through-walls experiment to search for axions and axion-like particles (ALPs). LHC collisions generate a high intensity and high ener…
Axion Dark Matter
C. B. Adams, N. Aggarwal, A. Agrawal +152
Axions are well-motivated dark matter candidates with simple cosmological production mechanisms. They were originally introduced to solve the strong CP problem, but also arise in a…
An exceptionally light axion: Strong CP and Dark Matter
Pablo Quilez, Luca Di Luzio, Belen Gavela +1
We explore whether the axion which solves the strong CP problem can naturally be much lighter than the canonical QCD axion. The symmetry proposed by Hook, with $\ma…
Constraining off-shell production of axion-like particles with and differential cross-section measurements
Sonia Carra, Vincent Goumarre, Ruchi Gupta +6
This article describes a search for low-mass axion-like particles (ALPs) at the Large Hadron Collider (LHC). If ALPs were produced at the LHC via gluon-gluon fusion and decayed to…
Dark matter from an even lighter QCD axion: trapped misalignment
Luca Di Luzio, Belen Gavela, Pablo Quilez +1
We show that dark matter can be accounted for by an axion that solves the strong CP problem, but is much lighter than usual due to a symmetry. The whole mass range…
An even lighter QCD axion
Luca Di Luzio, Belen Gavela, Pablo Quilez +1
We explore whether the axion which solves the strong CP problem can naturally be much lighter than the canonical QCD axion. The symmetry proposed by Hook, with $\ma…
Flavor constraints on electroweak ALP couplings
M. B. Gavela, R. Houtz, P. Quilez +2
We explore the signals of axion-like particles (ALPs) in flavor-changing neutral current (FCNC) processes. The most general effective linear Lagrangian for ALP couplings to the ele…
Automatic Peccei-Quinn symmetry
M. B. Gavela, M. Ibe, P. Quilez +1
We present a dynamical (composite) axion model where the Peccei-Quinn (PQ) symmetry arises automatically as a consequence of chirality and gauge symmetry. The Standard Model is sim…
Axion couplings to electroweak gauge bosons
G. Alonso-Álvarez, M. B. Gavela, P. Quilez
We determine the model-independent component of the couplings of axions to electroweak gauge bosons, induced by the minimal coupling to QCD inherent to solving the strong CP proble…
Color Unifed Dynamical Axion
M. K. Gaillard, M. B. Gavela, R. Houtz +2
We consider an enlarged color sector which solves the strong CP problem via new massless fermions. The spontaneous breaking of a unified color group into QCD and another confining…
Gauging Lepton Flavour
P. Quilez
The flavour lepton symmetry is gauged for both the Standard Model flavor group and its extension with three degenerate right-handed neutrinos. As a consequence of anomaly cancellat…
Gauged Lepton Flavour
R. Alonso, E. Fernandez Martinez, M. B. Gavela +3
The gauging of the lepton flavour group is considered in the Standard Model context and in its extension with three right-handed neutrinos. The anomaly cancellation conditions lead…