A5052939084- Particle physics theoretical and experimental studies
- Dark Matter and Cosmic Phenomena
- Cosmology and Gravitation Theories
- Black Holes and Theoretical Physics
- High-Energy Particle Collisions Research
- Quantum Chromodynamics and Particle Interactions
- Particle Detector Development and Performance
- Distributed and Parallel Computing Systems
- Computational Physics and Python Applications
- Neutrino Physics Research
- Species Distribution and Climate Change
- Atomic and Subatomic Physics Research
- Noncommutative and Quantum Gravity Theories
- Physics of Superconductivity and Magnetism
- Environmental DNA in Biodiversity Studies
- Advanced Data Storage Technologies
- Scientific Computing and Data Management
- Superconducting Materials and Applications
- Opinion Dynamics and Social Influence
- Traffic Prediction and Management Techniques
- AI in cancer detection
- COVID-19 diagnosis using AI
- Computability, Logic, AI Algorithms
- Radiation Detection and Scintillator Technologies
- Air Quality Monitoring and Forecasting
Universitat de València
2000-2025
Universidade Federal do ABC
2025
University of Sussex
2015-2024
Instituto de Física Corpuscular
2002-2024
Universidad Autónoma de Madrid
2022
Instituto de Física Teórica
2022
Heidelberg University
2022
British Library
2020-2021
Turing Institute
2020-2021
University of Bayreuth
2019
This document proposes a collection of simplified models relevant to the design new-physics searches at LHC and characterization their results. Both ATLAS CMS have already presented some results in terms models, we encourage them continue expand this effort, which supplements both signature-based benchmark model interpretations. A is defined by an effective Lagrangian describing interactions small number new particles. Simplified can equally well be described masses cross-sections. These...
The discovery by the ATLAS and CMS experiments of a new boson with mass around 125 GeV measured properties compatible those Standard-Model Higgs boson, coupled absence discoveries phenomena beyond Standard Model at TeV scale, has triggered interest in ideas for future factories. A circular e+e- collider hosted 80 to 100 km tunnel, TLEP, is among most attractive solutions proposed so far. It clean experimental environment, produces high luminosity top-quark, W Z studies, accommodates multiple...
We study the leading effective interactions between Standard Model fields and a generic singlet CP-odd (pseudo-) Goldstone boson. Two possible frameworks for electroweak symmetry breaking are considered: linear non-linear. For latter case, basis of operators is determined compared with that expansion. Associated phenomenological signals at colliders explored both scenarios, deriving new bounds analyzing future prospects, including LHC High Luminosity sensitivities. Mono-Z, mono-W, W-photon...
A bstract The search for effective field theory deformations of the Standard Model (SM) is a major goal particle physics that can benefit from global approach in framework Effective Field Theory (SMEFT). For first time, we include LHC data on top production and differential distributions together with Higgs decay rates Simplified Template Cross-Section (STXS) measurements fit, as well precision electroweak diboson LEP LHC, analysis SMEFT operators dimension 6 included linearly. We present...
Constraints on the full set of Standard Model dimension-6 operators have previously used triple-gauge couplings to complement constraints obtainable from Higgs signal strengths. Here we extend previous analyses sector by including information associated production and massive vector bosons (H+V production), which excludes a direction limited sensitivity allowed partial cancellations in measured at LEP. Kinematic distributions H+V provide improved operators, as illustrate here with...
New pseudo-scalars, often called axion-like particles (ALPs), abound in model-building and are associated with the breaking of a new symmetry. Traditional searches indirect bounds limited to light axions, typically or below KeV range for ALPs coupled photons. We present collider on from mono-γ, tri-γ mono-jet model independent fashion, as well prospects LHC future machines. find that they complementary existing searches, sensitive heavier have capability cover an otherwise inaccessible...
We treat the Standard Model as low-energy limit of an effective field theory that incorporates higher-dimensional operators to capture effects decoupled new physics. consider constraints imposed on coefficients dimension-6 by electroweak precision tests (EWPTs), applying a framework for dimension- 6 is more general than standard S, T formalism, and use measurements Higgs couplings kinematics associated production at Tevatron LHC, well triple-gauge LHC. highlight complementarity between...
A bstract The ATLAS and CMS collaborations have recently released significant new data on Higgs diboson production in LHC Run 2. Measurements of properties improved many channels, while kinematic information for h → γγ ZZ can now be more accurately incorporated fits using the STXS method, W + − at high p T gives sensitivity to deviations from Standard Model. We performed an updated global fit precision electroweak data, measurements LEP, Runs 1 2 framework Model Effective Field Theory...
We consider interpretations of the recent ∼ 3σ reports by CMS and ATLAS collaborations a possible X (∼750 GeV) state decaying into γγ final states. focus on possibilities that this is scalar or pseudoscalar electroweak isoscalar produced gluon-gluon fusion mediated loops heavy fermions. several models for these fermions, including single vector-like charge 2/3 T quark, doublet quarks (T, B), generation quarks, with without leptons also contribute to → decay amplitude. possibility (750) dark...
We consider the possibility of interpreting recently reported diphoton excess at 750 GeV as a spin-two massive particle (such Kaluza-Klein graviton in warped extra-dimensions) which serves mediator to Dark Matter via its gravitational couplings dark sector and Standard Model (SM). model non-universal resonance gauge bosons SM function on their localization extra dimension. find that scalar, fermion or vector matter can saturate relic density by annihilation into pair particles heavy...
A bstract We study resonant pair production of heavy particles in fully hadronic final states by means jet substructure techniques. propose a new resonance tagging strategy that smoothly interpolates between the highly boosted and resolved regimes, leading to uniform signal efficiencies background rejection rates across broad range masses. Our method makes it possible efficiently replace independent experimental searches, based on different state topologies, with single common analysis. As...
In this paper we assume the Higgs is an elementary scalar, and study how new physics could affect its couplings to electroweak gauge bosons. Adding LHC data LEP provides new, more stringent limits, particularly when two photon decay signal strength taken into account. We then effect of anomalous angular correlations in WW*. obtain a limit on rare photon-$Z$, use it constrain supersymmetry, find that staus with large mixing would be most sensitive channel. also these limits radion exchange...
We explore the possibility of explaining recent $\ensuremath{\sim}750\text{ }\text{ }\mathrm{GeV}$ excesses observed by ATLAS and CMS in $\ensuremath{\gamma}\ensuremath{\gamma}$ spectrum context a compelling theory naturalness. The potential spin-zero resonance responsible for also requires existence new heavy charged states. show that both such features are naturally realized see-saw composite Higgs model electroweak symmetry breaking, where pseudo-Goldstone bosons expected to be...
The Higgs discovery and the lack of any other hint for new physics favor a description non-standard in terms an effective field theory. We present implementation general Lagrangian containing operators up to dimension six framework FeynRules provide details on translation between mass interaction bases, particular three- four-point vertices involving gauge bosons. illustrate strengths this by using UFO interface capable generate model files that can be understood MadGraph 5 event generator...
Precise measurements of SM particles properties at the LHC allows to look for heavy New Physics in context an Effective Field Theory (EFT). These searches, however, often rely on kinematic regions where validity EFT may be compromised. In this paper we propose address issue by comparing with benchmark models. The connection between models and their manifestations as EFTs low energies us quantify breakdown EFT, describe ways combine different sources constraints beyond Higgs physics. To...
We propose a new collider probe for axionlike particles (ALPs), and more generally pseudo-Goldstone bosons: nonresonant searches that take advantage of the derivative nature their interactions with Standard Model particles. ALPs can participate as off shell mediators in s channel 2→2 scattering processes at colliders like LHC. exemplify power this novel type search by deriving limits on ALP couplings to gauge bosons via pp→ZZ, pp→γγ, pp→jj using run 2 CMS public data, probing previously...
We use the Fitmaker tool to incorporate recent CDF measurement of $m_W$ in a global fit electroweak, Higgs, and diboson data Standard Model Effective Field Theory (SMEFT) including dimension-6 operators at linear order. find that any one SMEFT ${\cal O}_{HWB}$, O}_{HD}$, O}_{\ell \ell}$ or O}_{H \ell}^{(3)}$ with non-zero coefficient could provide better than Model, strongest pull for O}_{HD}$ no tension other electroweak precision data. then analyse which tree-level single-field extensions...
The statistical models used to derive the results of experimental analyses are incredible scientific value and essential information for analysis preservation reuse. In this paper, we make case systematically publishing full discuss technical developments that practical. By means a variety physics cases -- including parton distribution functions, Higgs boson measurements, effective field theory interpretations, direct searches new physics, heavy flavor dark matter detection, world averages,...
We present a new class of 5D models, Holographic Technicolor, which fulfills the basic requirements for candidate comprehensible 4D strong dynamics at electroweak scale. It is first Technicolor-like model able to provide vanishing or even negative tree-level $S$ parameter, avoiding any no-go theorem on its sign. The described in large-$N$ regime. therefore computable: possible corrections coming from boundary terms follow $1/N$ suppression, and generation fermion masses parameter issue do...
Dark matter could have an electroweak origin, yet communicate with the visible sector exclusively through gravitational interactions. In a set-up addressing hierarchy problem, we propose new dark scenario where mediators, arising from compactification of extra-dimensions, are responsible for interactions and its relic abundance in Universe. We write explicit example this mechanism warped extra-dimensions work out constraints. also develop dual picture model, based on four-dimensional partial...
We have explored Natural Supersymmetry (NSUSY) scenarios with low values of the $\mu$ parameter which are characterised by higgsino-like Dark Matter (DM) and compressed spectra for lightest MSSM particles, $\chi^0_1$, $\chi^0_2$ $\chi^\pm_1$. This scenario could be probed via monojet signatures, but as signal-to-background ratio (S/B) is we demonstrate that 8 TeV LHC cannot obtain limits on DM mass beyond those LEP2. On other hand, found, 13 run LHC, optimising kinematical cuts can bring S/B...