324 citations · 2.8k across the 43 of their papers we have counts for
18 papers · 1 filter
ZZ and Zgamma still haven't found what they are looking for
Brando Bellazzini, Francesco Riva
Neutral diboson processes are precise probes of the Standard Model (SM) of particle physics, which entail high sensitivity to new physics effects. We identify in terms of dimension…
The Other Fermion Compositeness
Brando Bellazzini, Francesco Riva, Javi Serra +1
We discuss the only two viable realizations of fermion compositeness described by a calculable relativistic effective field theory consistent with unitarity, crossing symmetry and…
R-axion at colliders
Brando Bellazzini, Alberto Mariotti, Diego Redigolo +2
We study the effective theory of a generic class of hidden sectors where supersymmetry is broken together with an approximate R-symmetry at low energy. The light spectrum contains…
Goldstones in Diphotons
Brando Bellazzini, Roberto Franceschini, Filippo Sala +1
We study the conditions for a new scalar resonance to be observed first in diphotons at the LHC Run-2. We focus on scenarios where the scalar arises either from an internal or spac…
The Quantum Critical Higgs
Brando Bellazzini, Csaba Csáki, Jay Hubisz +3
The appearance of the light Higgs boson at the LHC is difficult to explain, particularly in light of naturalness arguments in quantum field theory. However light scalars can appear…
Composite Higgses
Brando Bellazzini, Csaba Csáki, Javi Serra
We present an overview of composite Higgs models in light of the discovery of the Higgs boson. The small value of the physical Higgs mass suggests that the Higgs quartic is likely…
The Effective Theory of Self-Interacting Dark Matter
Brando Bellazzini, Mathieu Cliche, Philip Tanedo
We present an effective non-relativistic theory of self-interacting dark matter. We classify the long range interactions and discuss how they can be generated from quantum field th…
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…
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…
Composite Higgs Sketch
Brando Bellazzini, Csaba Csáki, Jay Hubisz +2
The coupling of a composite Higgs to the standard model fields can deviate substantially from the standard model values. In this case perturbative unitarity might break down before…
Goldstone Fermion Dark Matter
Brando Bellazzini, Csaba Csaki, Jay Hubisz +2
We propose that the fermionic superpartner of a weak-scale Goldstone boson can be a natural WIMP candidate. The p-wave annihilation of this `Goldstone fermion' into pairs of Goldst…
Non-Standard Neutrino Interactions at One Loop
Brando Bellazzini, Yuval Grossman, Itay Nachshon +1
Neutrino oscillation experiments are known to be sensitive to Non-Standard Interactions (NSIs). We extend the NSI formalism to include one-loop effects. We discuss universal effect…
SUSY Digs up a Buried Higgs
Brando Bellazzini, Csaba Csáki, Jay Hubisz +1
The Higgs boson may dominantly decay to 4 light jets through a light pseudo-scalar intermediary: h -> 2 eta -> 4j, making reconstruction at the LHC particularly challenging. We exp…
Charming Higgs
Brando Bellazzini, Csaba Csaki, Adam Falkowski +1
We present a simple supersymmetric model where the dominant decay mode of the lightest Higgs boson is h->2eta->4c where eta is a light pseudoscalar and c is the charm quark. For su…
Buried Higgs
Brando Bellazzini, Csaba Csaki, Adam Falkowski +1
We present an extension of the MSSM where the dominant decay channel of the Higgs boson is a cascade decay into a four-gluon final state. In this model the Higgs is a pseudo-Goldst…
SUSY without the Little Hierarchy
B. Bellazzini, C. Csaki, A. Delgado +1
We propose a simple gauge extension of the minimal supersymmetric standard model (MSSM), where the fine tuning in the Higgs mass parameters is highly reduced. The Higgs boson is in…
Higgs doublet as a Goldstone boson in perturbative extensions of the Standard Model
Brando Bellazzini, Stefan Pokorski, Vyacheslav S. Rychkov +1
We investigate the idea of the Higgs doublet as a pseudo-Goldstone boson in perturbative extensions of the Standard Model, motivated by the desire to ameliorate its hierarchy probl…
The Higgs boson from an extended symmetry
Riccardo Barbieri, Brando Bellazzini, Vyacheslav S. Rychkov +1
The variety of ideas put forward in the context of a "composite" picture for the Higgs boson calls for a simple and effective description of the related phenomenology. Such a descr…