A5058564299- Particle physics theoretical and experimental studies
- Quantum Chromodynamics and Particle Interactions
- High-Energy Particle Collisions Research
- Neutrino Physics Research
- Dark Matter and Cosmic Phenomena
- Cosmology and Gravitation Theories
- Computational Physics and Python Applications
- Atomic and Subatomic Physics Research
- Black Holes and Theoretical Physics
- Particle Detector Development and Performance
- X-ray Spectroscopy and Fluorescence Analysis
- Particle Accelerators and Free-Electron Lasers
- Nuclear physics research studies
- Nuclear Physics and Applications
- Inorganic Fluorides and Related Compounds
- Astrophysics and Cosmic Phenomena
- Magnetic confinement fusion research
- Quantum chaos and dynamical systems
Universitat de València
2008-2024
Centre National de la Recherche Scientifique
2014-2023
University of Washington
2023
Institut National de Physique Nucléaire et de Physique des Particules
2023
Université Paris-Saclay
2023
The University of Melbourne
2023
Laboratoire de Physique des 2 Infinis Irène Joliot-Curie
2023
Stockholm University
2023
Parc Científic de la Universitat de València
2023
European Organization for Nuclear Research
2018-2019
Scalar and tensor interactions were once competitors to the now well-established $V\ensuremath{-}A$ structure of standard model weak interactions. We revisit these survey constraints from low-energy probes (neutron, nuclear, pion decays) as well collider searches. Currently, most stringent limit on scalar arise ${0}^{+}\ensuremath{\rightarrow}{0}^{+}$ nuclear decays radiative decay $\ensuremath{\pi}\ensuremath{\rightarrow}e\ensuremath{\nu}\ensuremath{\gamma}$, respectively. For future, we...
We study the renormalization group evolution (RGE) of new physics contributions to (semi)leptonic charged-current meson decays, focusing on operators involving a chirality flip at quark level. calculate their under electroweak and electromagnetic interactions, including also three-loop QCD running provide numerical formulas that allow us connect values corresponding Wilson coefficients from scales TeV low-energy scales. The large mixing tensor operator into (pseudo)scalar ones has important...
We compile information from low-energy observables sensitive to flavor-conserving 4-fermion operators with two or four leptons. Our analysis includes data e + − colliders, neutrino scattering on electron nucleon targets, atomic parity violation, parity-violating scattering, and the decay of pions, neutrons, nuclei tau recast these as tree-level constraints in Standard Model Effective Field Theory (SMEFT) where SM Lagrangian is extended by dimension-6 operators. allow all independent be...
We discuss how to perform consistent extractions of anomalous triple gauge couplings (aTGC) from electroweak boson pair production at the LHC in Standard Model Effective Field Theory (SMEFT). After recasting recent ATLAS and CMS searches pp → W Z(W ) ℓ′νℓ+ℓ−(νℓ) channels, we find that: (a) working consistently order Λ−2 SMEFT expansion existing aTGC bounds Higgs LEP-2 data are not improved, (b) strong limits quoted by experimental collaborations due partial Λ−4 corrections (dimension-6...
We present a combined analysis of LHC Higgs data (signal strengths) together with LEP-2 WW production measurements. To characterize possible deviations from the standard model (SM) predictions, we employ framework an effective field theory (EFT) where SM is extended by higher-dimensional operators suppressed mass scale new physics Λ. The performed consistently at order Λ(-2) in EFT expansion keeping all relevant operators. While two sets suffer flat directions, they impose stringent...
We analyze the sensitivity of hadronic τ decays to nonstandard interactions within model-independent framework standard model effective field theory. Both exclusive and inclusive are studied, using latest lattice data QCD dispersion relations. show that there enough theoretically clean channels disentangle all couplings contributing these decays, with τ→ππν_{τ} channel representing an unexpected powerful new physics probe. find ratios Fermi constant bound at subpercent level. These bounds...
A bstract Precision measurements in allowed nuclear beta decays and neutron decay are reviewed analyzed both within the Standard Model looking for new physics. The analysis incorporates most recent experimental theoretical developments. results interpreted terms of Wilson coefficients describing effective interactions between leptons nucleons (or quarks) that responsible decay. New global fits performed incorporating a comprehensive list precision decay, superallowed 0 + → transitions, other...
Abstract Kaon physics is at a turning point – while the rare-kaon experiments NA62 and KOTO are in full swing, end of their lifetime approaching future experimental landscape needs to be defined. With HIKE, KOTO-II LHCb-Phase-II on table under scrutiny, it very good moment time take stock contemplate about opportunities these theoretical developments provide for particle coming decade beyond. This paper provides compact summary talks discussions from Kaons@CERN 2023 workshop, held September CERN.
We discuss the consequences of approximate conservation vector and axial currents for hadronic matrix elements appearing in $\ensuremath{\beta}$ decay if nonstandard interactions are present. In particular, isovector (pseudo)scalar charge ${g}_{S(P)}$ nucleon can be related to difference (sum) masses absence electromagnetic effects. Using recent determinations these quantities from phenomenological lattice QCD studies we obtain accurate values ${g}_{S}=1.02(11)$ ${g}_{P}=349(9)$ modified...
We evaluate the impact of recent developments in hadron phenomenology on extracting possible fundamental tensor interactions beyond standard model. show that a novel class observables, including chiral-odd generalized parton distributions, and transversity distribution function can contribute to constraints this quantity. Experimental extractions hadronic matrix elements, if sufficiently precise, will provide a, so far, absent testing ground for lattice QCD calculations.
A bstract We discuss the effective field theory (EFT) for nuclear beta decay. The general quark-level EFT describing charged-current interactions between quarks and leptons is matched to nucleon-level non-relativistic at $$ \mathcal{O}\left(\textrm{MeV}\right) <mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML"> <mml:mi>O</mml:mi> <mml:mfenced> <mml:mi>MeV</mml:mi> </mml:mfenced> </mml:math> momentum scale characteristic transitions. matching takes into account, first time, effect of...
Precision measurements in nuclear β decay offer a sensitive window to search for new physics beyond the standard electroweak model. Searches are also strong motivation experiments carried out at high energy frontier. It is instructive confront results from low and frontiers order look possible complementarities. This paper reviews constraints on obtained neutron decays compares them those other semi‐leptonic processes LHC. The sensitivity requirements of precision decay, impact light current...
We analyze the decays $K\to\pi\ell\nu$ and $P\to\ell\nu$ ($P=K,\pi$, $\ell=e,\,\mu$) using a low-energy Effective-Field-Theory approach to parametrize New Physics study complementarity with baryon $\beta$ decays. then provide road map for global analysis of experimental data, all Wilson coefficients simultaneously, perform fit leading numerical bounds them $V_{us}$. A prominent result our is reinterpretation well-known $V_{ud}-V_{us}$ diagram as strong constraint on new physics. Finally, we...
We define a set of pseudo-observables characterizing the properties Higgs decays in generic extensions Standard Model with no new particles below mass. The can be determined from experimental data, providing systematic generalization " $$\kappa $$ -framework" so far adopted by LHC experiments. are defined on-shell decay amplitudes, allow for inclusion higher-order QED and QCD corrections, computed any Effective Field Theory (EFT) approach to physics. analyze reduction number independent...
A bstract We investigate the sensitivity of FASER ν detector to new physics in form non-standard neutrino interactions. , which will be installed 480 m downstream ATLAS interaction point, for first time study interactions multi-TeV neutrinos from a controlled source. Our formalism — is applicable any current and future experiment based on Standard Model Effective Theory (SMEFT) its counterpart, Weak Field (WEFT), below electroweak scale. Starting WEFT Lagrangian, we compute coefficients that...
Using recent precise hadronic $\ensuremath{\tau}$-decay data on the $V\ensuremath{-}A$ spectral function, and general properties of QCD such as analyticity, operator product expansion, chiral perturbation theory, we get accurate values for order parameters ${L}_{10}^{r}({M}_{\ensuremath{\rho}})$ ${C}_{87}^{r}({M}_{\ensuremath{\rho}})$. These two low-energy constants appear at ${p}^{4}$ ${p}^{6}$, respectively, in theory expansion correlator. At obtain...
We investigate the discovery potential of semileptonic hyperon decays in terms searches new physics at teraelectronvolt scales. These are controlled by a small $SU(3)$-flavor breaking parameter that allows for systematic expansions and accurate predictions reduced dependence on hadronic form factors. find muonic modes very sensitive to non-standard scalar tensor contributions demonstrate these could provide powerful synergy with direct LHC.
A bstract The extraction of the Cabibbo-Kobayashi-Maskawa (CKM) matrix from flavour observables can be affected by physics beyond Standard Model (SM). We provide a general roadmap to take this into account, which we apply case Effective Field Theory (SMEFT). choose set four input that determine Wolfenstein parameters, and discuss how effects dimension-six operators included in their definition. numerical values confidence intervals for CKM compare them with results fits obtained SM context....
We study the forward-backward asymmetry $A_{FB}$ in $pp \to \ell^+\ell^-$ at Z peak within Standard Model Effective Field Theory (SMEFT). find that this observable provides per mille level constraints on vertex corrections of boson to quarks,which close a flat direction electroweak precision SMEFT fit. Moreover, we show current data is precise enough so its inclusion fit improves significantly LEP bounds even simple New Physics setups. This demonstrates LHC can compete with and complement...
We analyze the so-called pinched weights, that are generally thought to reduce violation of quark-hadron duality in Finite-Energy Sum Rules. After showing how this is not true general, we explain address question for LR correlator and any particular weight taking advantage our previous work [1], where possible high-energy behavior spectral function was studied. In show use weights allows determine with high accuracy dimension six eight contributions operator product expansion,...
We analyze $h\to 4\ell$ decays in the kinematical region where dilepton pair of low invariant mass ($m_{34}$) is not far from QCD resonances ($\Psi$ and $\Upsilon$ states). On one hand, we present precise predictions spectrum within Standard Model, taking into account non-perturbative effects. other illustrate sensitivity this to New Physics models predicting existence new exotic light states. In particular, show that parameter regions relevant explain $(g-2)_\mu$ anomaly could be probed...