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33 papers · 2 filters
Short-Baseline Electron Neutrino Oscillation Length After Troitsk
C. Giunti, M. Laveder, Y. F. Li +1
We discuss the implications for short-baseline electron neutrino disappearance in the 3+1 mixing scheme of the recent Troitsk bounds on the mixing of a neutrino with mass between 2…
RPV stops bump off the background
Roberto Franceschini, Riccardo Torre
We study the 8 TeV LHC reach on pair produced heavy flavored di-jet resonances. Motivated by theories of R-parity violation in supersymmetry we concentrate on a final state with tw…
Flavour with a Light Dynamical "Higgs Particle"
R. Alonso, M. B. Gavela, L. Merlo +2
The Higgs-fermion couplings are sensitive probes of possible new physics behind a stable light Higgs particle. It is then essential to identify the flavour pattern of those interac…
The Effective Chiral Lagrangian for a Light Dynamical "Higgs Particle"
R. Alonso, M. B. Gavela, L. Merlo +2
We generalize the basis of CP-even chiral effective operators describing a dynamical Higgs sector, to the case in which the Higgs-like particle is light. Gauge and gauge-Higgs oper…
Liberating Higgs couplings in supersymmetry
Christoffer Petersson, Alberto Romagnoni, Riccardo Torre
In the MSSM, the Higgs couplings to down-type quarks and leptons, normalized with respect to their corresponding Standard Model values, coincide at tree-level and this degeneracy i…
A First Top Partner Hunter's Guide
Andrea De Simone, Oleksii Matsedonskyi, Riccardo Rattazzi +1
We provide a systematic effective lagrangian description of the phenomenology of the lightest top-partners in composite Higgs models. Our construction is based on symmetry, on sele…
Lepton Mixing Parameters from Discrete and CP Symmetries
Ferruccio Feruglio, Claudia Hagedorn, Robert Ziegler
We consider a scenario with three Majorana neutrinos in which a discrete, finite flavour group G_f is combined with a generalized CP transformation. We derive conditions for consis…
Lifting degeneracies in Higgs couplings using single top production in association with a Higgs boson
Marco Farina, Christophe Grojean, Fabio Maltoni +2
Current Higgs data show an ambiguity in the value of the Yukawa couplings to quarks and leptons. Not so much because of still large uncertainties in the measurements but as the res…
On the Tuning and the Mass of the Composite Higgs
Giuliano Panico, Michele Redi, Andrea Tesi +1
We analyze quantitatively the tuning of composite Higgs models with partial compositeness and its interplay with the predicted Higgs mass. In this respect we identify three classes…
Update of Short-Baseline Electron Neutrino and Antineutrino Disappearance
C. Giunti, M. Laveder, Y. F. Li +2
We present a complete update of the analysis of electron neutrino and antineutrino disappearance experiments in terms of neutrino oscillations in the framework of 3+1 neutrino mixi…
CP violation and mass hierarchy at medium baselines in the large theta(13) era
S. Dusini, A. Longhin, M. Mezzetto +4
The large value of theta(13) recently measured by rector and accelerator experiments opens unprecedented opportunities for precision oscillation physics. In this paper, we reconsid…
Integrand Reduction for Two-Loop Scattering Amplitudes through Multivariate Polynomial Division
Pierpaolo Mastrolia, Edoardo Mirabella, Giovanni Ossola +1
We describe the application of a novel approach for the reduction of scattering amplitudes, based on multivariate polynomial division, which we have recently presented. This techni…
A Higgslike Dilaton
Brando Bellazzini, Csaba Csáki, Jay Hubisz +2
We examine the possibility that the recently discovered 125 GeV higgs like resonance actually corresponds to a dilaton: the Goldstone boson of scale invariance spontaneously broken…
Testing new physics with the electron g-2
G. F. Giudice, P. Paradisi, M. Passera
We argue that the anomalous magnetic moment of the electron (a_e) can be used to probe new physics. We show that the present bound on new-physics contributions to a_e is 8*10^-13,…
Status of Supersymmetric Seesaw in SO(10) models
L. Calibbi, D. Chowdhury, A. Masiero +2
We report on the status of supersymmetric seesaw models in the light of recent experimental results on , and the light Higgs mass at the LHC. SO(10)-like relat…
Photophilic Higgs from sgoldstino mixing
Brando Bellazzini, Christoffer Petersson, Riccardo Torre
The spontaneous breaking of linearly realized N=1 supersymmetry implies the existence of a pseudo-Goldstone fermion, the goldstino, and of its complex scalar superpartner, the sgol…
Repressing Anarchy in Neutrino Mass Textures
Guido Altarelli, Ferruccio Feruglio, Isabella Masina +1
The recent results that is relatively large, of the order of the previous upper bound, and the indications of a sizable deviation of from the maximal value are in…
Higgs Low-Energy Theorem (and its corrections) in Composite Models
M. Gillioz, R. Grober, C. Grojean +2
The Higgs low-energy theorem gives a simple and elegant way to estimate the couplings of the Higgs boson to massless gluons and photons induced by loops of heavy particles. We exte…
Postcards from oases in the desert: phenomenology of SUSY with intermediate scales
Carla Biggio, Lorenzo Calibbi, Antonio Masiero +1
The presence of new matter fields charged under the Standard Model gauge group at intermediate scales below the Grand Unification scale modifies the renormalization group evolution…
D14 - A Common Origin of the Cabibbo Angle and the Lepton Mixing Angle theta^l_13
C. Hagedorn, D. Meloni
It has been shown that the Cabibbo angle can be predicted in terms of group theoretical quantities, if the dihedral group D14 plays the role of a flavor symmetry. We extend a super…
SUSY S4 x SU(5) revisited
Claudia Hagedorn, Stephen F. King, Christoph Luhn
Following the recent results from Daya Bay and RENO, which measure the lepton mixing angle theta^l_13 ~ 0.15, we revisit a supersymmetric S4 x SU(5) model, which predicts tri-bimax…
Scattering Amplitudes from Multivariate Polynomial Division
Pierpaolo Mastrolia, Edoardo Mirabella, Giovanni Ossola +1
We show that the evaluation of scattering amplitudes can be formulated as a problem of multivariate polynomial division, with the components of the integration-momenta as indetermi…
Anomalous Couplings in Double Higgs Production
Roberto Contino, Margherita Ghezzi, Mauro Moretti +3
The process of gluon-initiated double Higgs production is sensitive to non-linear interactions of the Higgs boson. In the context of the Standard Model, studies of this process foc…
Tri-Bimaximal Neutrino Mixing and Discrete Flavour Symmetries
Guido Altarelli, Ferruccio Feruglio, Luca Merlo
We review the application of non-Abelian discrete groups to Tri-Bimaximal (TB) neutrino mixing, which is supported by experiment as a possible good first approximation to the data.…