Zobrazeno 1 - 10
of 111
pro vyhledávání: '"Medina, Anibal"'
Although protons are baryons with an overall vanishing lepton number, they possess a non-trivial leptonic content arising from quantum fluctuations which can be described by lepton parton distribution functions (PDFs) of the proton. These PDFs have b
Externí odkaz:
http://arxiv.org/abs/2408.12644
We study di-Higgs production via gluon fusion at the high luminosity LHC in the presence of new physics, focusing on the $b\bar b\gamma\gamma$ final states. Taking a minimal set of three scalar leptoquarks (LQs) with cubic and quartic interactions wi
Externí odkaz:
http://arxiv.org/abs/2312.13149
Probing new physics with charge asymmetries in 2 same-sign leptons plus jets final states at the LHC
Publikováno v:
JHEP01(2024)156
We study the impact of new physics models in the charge asymmetry defined for LHC final states consisting of two same-sign leptons (2SS$l$, with $l= e, \mu$) plus jets ($N_\text{jets}\geq2$), with a center-of-mass energy of $\sqrt{s}=13$ TeV, where t
Externí odkaz:
http://arxiv.org/abs/2308.08008
Autor:
Arganda, Ernesto, Marcano, Xabier, Lozano, Víctor Martín, Medina, Anibal D., Perez, Andres D., Szewc, Manuel, Szynkman, Alejandro
Publikováno v:
Eur. Phys. J. C 82 (2022) 11, 993
Machine-learning techniques have become fundamental in high-energy physics and, for new physics searches, it is crucial to know their performance in terms of experimental sensitivity, understood as the statistical significance of the signal-plus-back
Externí odkaz:
http://arxiv.org/abs/2205.05952
Publikováno v:
Phys. Rev. D 106, 075018 (2022)
The Weakly Interacting Massive Particle (WIMP) paradigm is one of the most popular scenarios for Dark Matter (DM) theories that however is strongly constrained, in particular by direct detection experiments. We stick with the WIMP hypothesis and cons
Externí odkaz:
http://arxiv.org/abs/2112.09103
Publikováno v:
JHEP 11 (2021) 119
Since the discovery in 2012 of the Higgs boson at the LHC, as the last missing piece of the Standard Model of particle physics, any hint of new physics has been intensively searched for, with no confirmation to date. There are however slight deviatio
Externí odkaz:
http://arxiv.org/abs/2108.03058
Publikováno v:
SciPost Phys. 12, 063 (2022)
We study several simplified dark matter (DM) models and their signatures at the LHC using neural networks. We focus on the usual monojet plus missing transverse energy channel, but to train the algorithms we organize the data in 2D histograms instead
Externí odkaz:
http://arxiv.org/abs/2105.12018
Measurements of single Higgs production and its decays are in good agreement with the Standard Model. There is still room for large modifications in double Higgs production at LHC, though these effects may be correlated with large corrections to othe
Externí odkaz:
http://arxiv.org/abs/2105.06309
In a previous work we developed a search strategy for staus produced by the decay of the heavy CP-even Higgs boson $H$ within the context of the large $\tan\beta$ regime of the minimal supersymmetric standard model (MSSM) in an scenario of large stau
Externí odkaz:
http://arxiv.org/abs/2102.02290
Autor:
Lavignac, Stéphane, Medina, Anibal D.
Low-scale models of neutrino mass generation often feature sterile neutrinos with masses in the GeV-TeV range, which can be produced at colliders through their mixing with the Standard Model neutrinos. We consider an alternative scenario in which the
Externí odkaz:
http://arxiv.org/abs/2010.00608