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22 papers · 2 filters
Two-Loop Renormalization in the Standard Model Part I: Prolegomena
S. Actis, A. Ferroglia, G. Passarino +1
In this paper the building blocks for the two-loop renormalization of the Standard Model are introduced with a comprehensive discussion of the special vertices induced in the Lagra…
On the Impact of Flavour Oscillations in Leptogenesis
Andrea De Simone, Antonio Riotto
When lepton flavour effects in thermal leptogenesis are active, they introduce important differences with respect to the case in which they are neglected, the so-called one-flavour…
Leptogenesis and Low Energy CP Violation in Neutrino Physics
S. Pascoli, S. T. Petcov, Antonio Riotto
Taking into account the recent progress in the understanding of the lepton flavour effects in leptogenesis, we investigate in detail the possibility that the CP-violation necessary…
Tri-bimaximal Neutrino Mixing from Orbifolding
Guido Altarelli, Ferruccio Feruglio, Yin Lin
We show that the A4 discrete symmetry that naturally leads to tri-bimaximal neutrino mixing can be simply obtained as a result of an orbifolding starting from a model in 6 dimensio…
Short-Baseline Active-Sterile Neutrino Oscillations?
Carlo Giunti, Marco Laveder
We suggest the possibility that the anomalies observed in the LSND experiment and the Gallium radioactive source experiments may be due to neutrino oscillations generated by a larg…
Running and BR() in SUSY-GUTs
L. Calibbi, A. Faccia, A. Masiero +1
In supersymmetric seesaw models based on SUSY-GUTs, it could happen that the neutrino PMNS mixing angles are related to the lepton flavour violating decay rates. In particular SO(1…
Relating seesaw neutrino masses, lepton flavor violation and SUSY breaking
Filipe R. Joaquim, Anna Rossi
We discuss a GUT realization of the supersymmetric triplet seesaw mechanism(recently proposed by us in hep-ph/0604083 and further analyzed in hep-ph/0607298) where the exchange of…
A new bridge between leptonic CP violation and leptogenesis
G. C. Branco, R. Gonzalez Felipe, F. R. Joaquim
Flavor effects due to lepton interactions in the early Universe may have played an important role in the generation of the cosmological baryon asymmetry through leptogenesis. If th…
The B -- TAU FCNC connection in SUSY Unified Theories
A. Masiero, P. Paradisi
In the context of SUSY grand unification a link is established between the hadronic and leptonic soft breaking sectors. Such relation is here exploited in particular for FCNC proce…
Towards the European strategy for particle physics: the Briefing Book
T. Akesson, R. Aleksan, B. Allanach +29
This document was prepared as part of the briefing material for the Workshop of the CERN Council Strategy Group, held in DESY Zeuthen from 2nd to 6th May 2006. It gives an overview…
Connecting Low Energy Leptonic CP-violation to Leptogenesis
S. Pascoli, S. T. Petcov, A. Riotto
It was commonly thought that the observation of low energy leptonic CP-violating phases would not automatically imply the existence of a baryon asymmetry in the leptogenesis scenar…
Flavour-Dependent Leptogenesis with Sequential Dominance
S. Antusch, S. F. King, A. Riotto
We study thermal leptogenesis in classes of neutrino mass models based on the seesaw mechanism with three right-handed neutrinos and sequential right-handed neutrino dominance. The…
Phenomenology of the triplet seesaw mechanism with Gauge and Yukawa mediation of SUSY breaking
Filipe R. Joaquim, Anna Rossi
We thoroughly discuss a new supersymmetric grand unified scenario of the triplet seesaw mechanism where the exchange of heavy SU(2)_W triplet states generates both neutrino masses…
Future neutrino oscillation facilities
A. Blondel, A. Cervera-Villanueva, A. Donini +3
The recent discovery that neutrinos have masses opens a wide new field of experimentation. Accelerator-made neutrinos are essential in this program. Ideas for future facilities inc…
Precise mass-dependent QED contributions to leptonic g-2 at order alpha^2 and alpha^3
M. Passera
Improved values for the two- and three-loop mass-dependent QED contributions to the anomalous magnetic moments of the electron, muon, and tau lepton are presented. The Standard Mod…
New Constraints on SUSY Flavour Mixing in Light of Recent Measurements at the Tevatron
John Foster, Ken-ichi Okumura, Leszek Roszkowski
We discuss the implications, for general flavour mixing, of the recent results regarding the new allowed range for mixing in the meson system, as well as the new improved bou…
A Deeply Virtual Compton Scattering Amplitude
M. Capua, S. Fazio, R. Fiore +2
A factorized Regge-pole model for deeply virtual Compton scattering is suggested. The use of an effective logarithmic Regge-Pomeron trajectory provides for the description of both…
Gauge and Yukawa mediated supersymmetry breaking in the triplet seesaw scenario
Filipe R. Joaquim, Anna Rossi
We propose a novel supersymmetric unified scenario of the triplet seesaw mechanism where the exchange of the heavy triplets generates both neutrino masses and soft supersymmetry br…
Fermion masses and proton decay in a minimal five-dimensional SO(10) model
Maria Laura Alciati, Ferruccio Feruglio, Yin Lin +1
We propose a minimal SO(10) model in 5 space-time dimensions. The single extra spatial dimension is compactified on the orbifold S^1/(Z_2 x Z_2') reducing the gauge group to that o…
Neutrino Dark Energy and Moduli Stabilization in a BPS Braneworld Scenario
Andrea Zanzi
A braneworld model for neutrino Dark Energy (DE) is presented. We consider a five dimensional two-branes set up with a bulk scalar field motivated by supergravity. Its low-energy e…
Physics potential of the CERN-MEMPHYS neutrino oscillation project
J. E. Campagne, M. Maltoni, M. Mezzetto +1
We consider the physics potential of CERN based neutrino oscillation experiments consisting of a Beta Beam (BB) and a Super Beam (SPL) sending neutrinos to MEMPHYS, a 440 kt water…
Heavy-quark energy loss at RHIC and LHC
A. Dainese, N. Armesto, M. Cacciari +2
The attenuation of heavy-flavored particles in nucleus-nucleus collisions tests the microscopic dynamics of medium-induced parton energy loss and, in particular, its expected depen…