394 citations · 1.9k across the 31 of their papers we have counts for
30 papers · 1 filter
Lepton Number Violation and Scalar Searches at the LHC
Francisco del Aguila, Mikael Chala, Arcadi Santamaria +1
We review the SM extensions with scalar multiplets including doubly-charged components eventually observable as di-leptonic resonances at the LHC. Special emphasis is payed to the…
Distinguishing between lepton number violating scalars at the LHC
Francisco del Aguila, Mikael Chala, Arcadi Santamaria +1
Scalars with lepton number violating interactions decaying into lepton pairs, as those mediating the see-saw of type II, always include doubly-charged components. If these are obse…
Discriminating between lepton number violating scalars using events with four and three charged leptons at the LHC
Francisco del Aguila, Mikael Chala, Arcadi Santamaria +1
Many Standard Model extensions predict doubly-charged scalars; in particular, all models with resonances in charged lepton-pair channels with non-vanishing lepton number; if these…
Effective Lagrangian approach to neutrinoless double beta decay and neutrino masses
Francisco del Aguila, Alberto Aparici, Subhaditya Bhattacharya +2
Neutrinoless double beta () decay can in general produce electrons of either chirality, in contrast with the minimal Standard Model (SM) extension with only the addition of t…
A realistic model of neutrino masses with a large neutrinoless double beta decay rate
Francisco del Aguila, Alberto Aparici, Subhaditya Bhattacharya +2
The minimal Standard Model extension with the Weinberg operator does accommodate the observed neutrino masses and mixing, but predicts a neutrinoless double beta () decay rat…
Lepton flavor violation in the Simplest Little Higgs model
F. del Aguila, J. I. Illana, M. D. Jenkins
The flavor sector of Little Higgs models based on product groups, notably the Littlest Higgs with T parity (LHT), has been extensively studied and some amount of fine tuning was fo…
Precise limits from lepton flavour violating processes on the Littlest Higgs model with T-parity
F. del Aguila, J. I. Illana, M. D. Jenkins
We recalculate the leading one-loop contributions to mu > e gamma and mu -> eee in the Littlest Higgs model with T-parity, recovering previous results for the former. When all the…
Distinguishing seesaw models at LHC with multi-lepton signals
F. del Aguila, J. A. Aguilar-Saavedra
We investigate the LHC discovery potential for electroweak scale heavy neutrino singlets (seesaw I), scalar triplets (seesaw II) and fermion triplets (seesaw III). For seesaw I we…
Electroweak scale seesaw and heavy Dirac neutrino signals at LHC
F. del Aguila, J. A. Aguilar-Saavedra
Models of type I seesaw can be implemented at the electroweak scale in a natural way provided that the heavy neutrino singlets are quasi-Dirac particles. In such case, their contri…
Heavy Majorana Neutrinos in the Effective Lagrangian Description: Application to Hadron Colliders
Francisco del Aguila, Shaouly Bar-Shalom, Amarjit Soni +1
We consider the effects of heavy Majorana neutrinos N with sub-TeV masses. We argue that the mere presence of these particles would be a signal of physics beyond the minimal seesaw…
Electroweak constraints on see-saw messengers and their implications for LHC
F. del Aguila, J. A. Aguilar-Saavedra, J. de Blas +1
We review the present electroweak precision data constraints on the mediators of the three types of see-saw mechanisms. Except in the see-saw mechanism of type I, with the heavy ne…
Effects of new leptons in Electroweak Precision Data
F. del Aguila, J. de Blas, M. Perez-Victoria
We obtain limits on generic vector-like leptons at the TeV scale from electroweak precision tests. These limits are complementary to the ones obtained from lepton flavour violating…
Collider aspects of flavour physics at high Q
T. Lari, L. Pape, W. Porod +105
This review presents flavour related issues in the production and decays of heavy states at LHC, both from the experimental side and from the theoretical side. We review top quark…
Like-sign dilepton signals from a leptophobic Z' boson
F. del Aguila, J. A. Aguilar-Saavedra
A new leptophobic neutral gauge boson Z' with small mixing to the Z can have a mass as light as M_Z' ~ 350 GeV, and still have escaped detection at LEP and Tevatron. Such a Z' boso…
Heavy neutrino signals at large hadron colliders
F. del Aguila, J. A. Aguilar-Saavedra, R. Pittau
We study the LHC discovery potential for heavy Majorana neutrino singlets in the process pp -> W+ -> l+ N -> l+ l+ jj (l=e,mu) plus its charge conjugate. With a fast detector simul…
Impact of right-handed interactions on the propagation of Dirac and Majorana neutrinos in matter
F. del Aguila, J. Syska, M. Zralek
Dirac and Majorana neutrinos can be distinguished in relativistic neutrino oscillations if new right-handed interactions exist, due to their different propagation in matter. We rev…
Neutrino physics at large colliders
F. del Aguila, J. A. Aguilar-Saavedra, R. Pittau
Large colliders are not sensitive to light neutrino masses and character, but they can produce new heavy neutrinos, allowing also for the determination of their Dirac or Majorana n…
Effective description of brane terms in extra dimensions
Francisco del Aguila, Manuel Perez-Victoria, Jose Santiago
We study how theories defined in (extra-dimensional) spaces with localized defects can be described perturbatively by effective field theories in which the width of the defects van…
QCD corrections to forward-backward charge asymmetries in l- l+ j production at hadron colliders
R. Pittau, F. del Aguila, Ll. Ametller
The large cross sections for gauge boson production at the Fermilab Tevatron and the CERN Large Hadron Collider (LHC) might give a chance to determine the electroweak parameters wi…
NLO forward-backward charge asymmetries in p p (p bar p) -> l- l+ jet production at large hadron colliders
F. del Aguila, Ll. Ametller, R. Pittau
We consider the next-to-leading order corrections, O(alpha_s), to forward-backward charge asymmetries for lepton-pair production in association with a large transverse momentum jet…
A Little Higgs model of neutrino masses
F. del Aguila, M. Masip, J. L. Padilla
Little Higgs models are formulated as effective theories with a cut-off of up to 100 times the electroweak scale. Neutrino masses are then a puzzle, since the usual see-saw mechani…
Physics of Brane Kinetic Terms
F. del Aguila, M. Perez-Victoria, J. Santiago
Models with extra dimensions may give new effects visible at future experiments. In these models, bulk fields can develop localized corrections to their kinetic terms which can mod…
Some consequences of brane kinetic terms for bulk fermions
F. del Aguila, M. Perez-Victoria, J. Santiago
In theories with extra dimensions there are generically brane kinetic terms for fields living in the bulk. These modify the masses and wave functions of the Kaluza-Klein expansions…
Low energy constraints on orbifold models
F. del Aguila, J. Santiago
We review the low energy limits on Kaluza-Klein excitations in orbifold models. New vector-like quarks, as well as new Z' gauge bosons, can be accommodated with masses observable a…