Personne

Andrea Wulzer

Cette personne n’est plus à l’EPFL

Heavy vector triplets: bridging theory and data

Andrea Wulzer, Duccio Pappadopulo, Riccardo Torre, Andrea Thamm

We introduce a model-independent strategy to study narrow resonances which we apply to a heavy vector triplet of the Standard Model (SM) group for illustration. The method is based on a simplified phenomenological Lagrangian which reproduces a large class ...

Springer Nature2014

A first top partner hunter's guide

Riccardo Rattazzi, Andrea Wulzer, Andrea De Simone

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 selection rules and on plausible dynamical assumptions. The structure of the res ...

Springer Nature2013

Probing the scattering of equivalent electroweak bosons

Riccardo Rattazzi, Andrea Wulzer, Roberto Franceschini, Pascal Borel

We analyze the kinematic conditions under which the scattering of equivalent massive spin-1 vector bosons factorizes out of the complete process. In practice, we derive the conditions for the validity of the effective W approximation, proposed long ago but ...

Springer Nature2012

Massive pions, anomalies and baryons in holographic QCD

Andrea Wulzer

We consider a holographic model of QCD, obtained by a very simple modification of the original construction, which describes at the same time the pion mass, the QCD anomalies and the baryons as topological solitons. We study in detail its phenomenological ...

2011

The other natural two Higgs doublet model

Riccardo Rattazzi, Andrea Wulzer, Jan Dalibor Mrazek

We characterize models where electroweak symmetry breaking is driven by two light Higgs doublets arising as pseudo-Nambu-Goldstone bosons of new dynamics above the weak scale. They represent the simplest natural two Higgs doublet alternative to supersymmet ...

2011

AdS/QCD: the relevance of the geometry

Andrea Wulzer, Michele Redi, Diego Becciolini

We investigate the relevance of the metric and of the geometry in five-dimensional models of hadrons. Generically, the metric does not affect strongly the results and even flat space agrees reasonably well with the data. Nevertheless, we observe a preferen ...

Springer Nature2010

A Strong Sector at the LHC: Top Partners in Same-Sign Dileptons

Andrea Wulzer, Jan Dalibor Mrazek

Heavy partners of the top quark are a common prediction of many models in which a new strongly-coupled sector is responsible for the breaking of the electroweak symmetry. In this paper, we investigate their experimental signature at the LHC, focusing on th ...

American Physical Society2010

Nucleon form factors from 5D skyrmions

Andrea Wulzer

Several aspects of hadron physics are well described by a simple 5D effective field theory, Baryons arise in this scenario as "large" (and therefore calculable) 5D skyrmions. We extend and reline the existing analysis of this 5D soliton, which is fairly no ...

2009

Stable skyrmions from extra dimensions

Andrea Wulzer

We show that skyrmions arising from compact five dimensional models have stable sizes. We numerically obtain the skyrmion configurations and calculate their size and energy. Although their size strongly depends on the magnitude of localized kinetic-terms, ...

Springer Nature2008