63 citations · 209 across the 12 of their papers we have counts for
13 papers
Schur elimination of brane-localised Higgs mass spectra, and the criteria for the / non-commutativity
Roberto Barceló, Subhadip Mitra
In many 5D extensions of the Standard Model, the Higgs boson is localised to a single point along the extra dimension, where it couples to bulk fermions. Computing the fermion mass…
On a boundary-localized Higgs boson in 5D theories
Roberto Barceló, Subhadip Mitra, Grégory Moreau
In the context of a simple five-dimensional (5D) model with bulk matter coupled to a brane-localized Higgs boson, we point out a new non-commutativity in the 4D calculation of the…
The Higgs Boson and New Physics at the TeV Scale
Roberto Barcelo
In this Thesis two different parts can be distinguished. In the first one, after a review of the SM Higgs sector, I describe some scenarios for new physics such as Little Higgs and…
Supersymmetry with long-lived staus at the LHC
R. Barcelo, J. I. Illana, M. Masip +2
We consider SUSY extensions of the standard model where the gravitino is the dark-matter particle and the stau is long lived. If there is a significant mass gap with squarks and gl…
Single Vectorlike Quark Production at the LHC
Roberto Barcelo, Adrian Carmona, Mikael Chala +2
A gluon resonance G of mass below 1 TeV could be the origin of the t\bar{t} forward-backward asymmetry observed at the Tevatron provided that new decay modes G->\bar{q}Q, with q a…
Stealth gluons at hadron colliders
Roberto Barcelo, Adrian Carmona, Manuel Masip +1
We find that a heavy gluon G of mass 800-900 GeV with small, mostly axial-vector couplings to the light quarks and relatively large vector and axial-vector couplings to the top qua…
Gluon excitations in t tbar production at hadron colliders
Roberto Barcelo, Adrian Carmona, Manuel Masip +1
We argue that a relatively light massive gluon with mass <= 1 TeV, small purely axial couplings to light quarks and sizable vector and axial couplings to the top quark can reproduc…
Propagation in the atmosphere of ultrahigh-energy charmed hadrons
R. Barcelo, J. I. Illana, M. D. Jenkins +1
Charmed mesons may be produced when a primary cosmic ray or the leading hadron in an air shower collide with an atmospheric nucleon. At energies \ge 10^8 GeV their decay length bec…
Higgs bosons in ttbar production
Roberto Barcelo
The top quark has a large Yukawa coupling with the Higgs boson. In the usual extensions of the standard model the Higgs sector includes extra scalars, which also tend to couple str…
Extra Higgs bosons in ttbar production at the LHC
Roberto Barcelo, Manuel Masip
The top quark has a large Yukawa coupling with the Higgs boson. In the usual extensions of the standard model the Higgs sector includes extra scalars, which also tend to couple str…
Cosmic ray knee and new physics at the TeV scale
Roberto Barcelo, Manuel Masip, Iacopo Mastromatteo
We analyze the possibility that the cosmic ray knee appears at an energy threshold where the proton-dark matter cross section becomes large due to new TeV physics. It has been show…
A minimal Little Higgs model
Roberto Barcelo, Manuel Masip
We discuss a Little Higgs scenario that introduces below the TeV scale just the two minimal ingredients of these models, a vectorlike T quark and a singlet component (implying anom…
Little Higgs models with a light T quark
R. Barcelo, M. Masip, M. Moreno-Torres
We study Little Higgs models based on a SU(3)_1 x SU(3)_2 global symmetry and with two scales (the two vacuum expectation values f_{1,2}) substantially different. We show that all…