A5039841302- Particle physics theoretical and experimental studies
- Quantum Chromodynamics and Particle Interactions
- Dark Matter and Cosmic Phenomena
- Neutrino Physics Research
- Nuclear physics research studies
- High-Energy Particle Collisions Research
- Atomic and Subatomic Physics Research
- Cosmology and Gravitation Theories
- Particle Detector Development and Performance
- Advanced NMR Techniques and Applications
- Computational Physics and Python Applications
- Superconducting Materials and Applications
- Black Holes and Theoretical Physics
- Quantum, superfluid, helium dynamics
- Geological and Geochemical Analysis
- Radioactive Decay and Measurement Techniques
- Geochemistry and Geologic Mapping
- Atomic and Molecular Physics
- Particle accelerators and beam dynamics
- Functional Brain Connectivity Studies
- High-pressure geophysics and materials
- Gamma-ray bursts and supernovae
- Electron and X-Ray Spectroscopy Techniques
- Scientific Research and Discoveries
- Scientific Computing and Data Management
Delta Institute for Theoretical Physics
2021-2024
University of Amsterdam
2021-2024
National Institute for Subatomic Physics
2013-2024
University of Massachusetts Amherst
2019-2022
Brookhaven National Laboratory
2019-2022
RIKEN BNL Research Center
2019-2022
University of Waterloo
2022
Michigan State University
2019
Forschungszentrum Jülich
2013-2016
Ernst Ruska Centre
2014-2015
Working in the framework of Standard Model Effective Field Theory, we study chirality-flipping couplings top quark to Higgs and gauge bosons. We discuss detail renormalization group evolution lower energies investigate direct indirect contributions high- low-energy CP-conserving CP-violating observables. Our analysis includes constraints from collider observables, precision electroweak tests, flavor physics, electric dipole moments. find that probes are competitive or dominant for both...
Abstract High energy collisions at the High-Luminosity Large Hadron Collider (LHC) produce a large number of particles along beam collision axis, outside acceptance existing LHC experiments. The proposed Forward Physics Facility (FPF), to be located several hundred meters from ATLAS interaction point and shielded by concrete rock, will host suite experiments probe standard model (SM) processes search for physics beyond (BSM). In this report, we review status civil engineering plans explore...
A bstract Recent developments in the Standard Model analysis of semileptonic charged-current processes involving light quarks have revealed ~ 3 σ tensions Cabibbo universality tests meson, neutron, and nuclear beta decays. In this paper, we explore beyond explanations so-called Angle Anomaly framework Effective Field Theory (SMEFT), including not only low-energy charged current (‘L’), but also electroweak precision observables (‘EW’) Drell-Yan collider (‘C’) that probe same underlying...
Within the framework of chiral effective field theory, we discuss leading contributions to neutrinoless double-beta decay transition operator induced by light Majorana neutrinos. Based on renormalization arguments in both dimensional regularization with minimal subtraction and a coordinate-space cutoff scheme, show need introduce leading-order short-range operator, missing all current calculations. We strategies determine finite part coupling matching lattice QCD or relating it via symmetry...
We discuss the phenomenology of right-handed charged currents in framework Standard Model Effective Field Theory, which they arise due to a single gauge-invariant dimension-six operator. study manifestations nine complex couplings $W$ quarks collider physics, flavor and low-energy precision measurements. first obtain constraints on under assumption that operator is dominant correction at observable energies. subsequently impact degeneracies with other Beyond-the-Standard-Model effective...
A bstract We study the phenomenology of electric dipole moments (EDMs) induced in various scalar leptoquark models. consider generic couplings to quarks and leptons match Standard Model effective field theory. After evolving resulting operators low energies, we connect EDM experiments by using up-to-date hadronic, nuclear, atomic matrix elements. show that current experimental limits set strong constraints on possible CP-violating phases Depending involved interaction, existing searches for...
We show that the proposed measurements of electric dipole moments light nuclei in storage rings would put strong constraints on models flavor-diagonal CP violation. Our analysis is exemplified by a comparison Standard Model including QCD theta term, minimal left-right symmetric model, specific version so called aligned two-Higgs doublet and briefly supersymmetric extension Model. By using effective field theory techniques we demonstrate to what extent nucleons, deuteron, helion could...
The process at the heart of neutrinoless double-$\ensuremath{\beta}$ decay, $nn\ensuremath{\rightarrow}pp\phantom{\rule{0.16em}{0ex}}{e}^{\ensuremath{-}}{e}^{\ensuremath{-}}$ induced by a light Majorana neutrino, is investigated in pionless and chiral effective field theory. We show various regularization schemes need to introduce short-range lepton-number-violating operator leading order, confirming earlier findings. demonstrate that such only needed spin-singlet $S$-wave transitions, while...
We analyze neutrinoless double beta decay (0νββ) within the framework of Standard Model Effective Field Theory. Apart from dimension-five Weinberg operator, first contributions appear at dimension seven. classify operators and evolve them to electroweak scale, where we match effective dimension-six, -seven, -nine operators. In next step, after renormalization group evolution QCD construct chiral Lagrangian arising these develop a power-counting scheme derive two-nucleon 0νββ currents up...
We calculate the electric dipole moment of nucleon induced by quantum chromodynamics $\ensuremath{\theta}$ term. use gradient flow to define topological charge and ${N}_{f}=2+1$ flavors dynamical quarks corresponding pion masses 700, 570, $410\phantom{\rule{0.16em}{0ex}}\mathrm{MeV}$, perform an extrapolation physical point based on chiral perturbation theory. calculations at three different lattice spacings in range...
This note proposes common standards and prescriptions for the effective-field-theory interpretation of top-quark measurements at LHC.
A bstract We study the prospects of a displaced-vertex search sterile neutrinos at Large Hadron Collider (LHC) in framework neutrino-extended Standard Model Effective Field Theory ( ν SMEFT). The production and decay can proceed via standard active-sterile neutrino mixing weak current, as well through higher-dimensional operators arising from decoupled new physics. If are long-lived, their lead to displaced vertices which be reconstructed. investigate sensitivities for ATLAS/CMS detector,...
We investigate neutrinoless double beta decay (0νββ) in the presence of sterile neutrinos with Majorana mass terms. These gauge-singlet fields are allowed to interact Standard-Model (SM) via renormalizable Yukawa couplings as well higher-dimensional gauge-invariant operators up dimension seven Standard Model Effective Field Theory extended neutrinos. At GeV scale, we use Chiral effective field theory involving connect at level quarks and gluons hadronic interactions pions nucleons. This...
The amplitude for the neutrinoless double $\ensuremath{\beta}$ ($0\ensuremath{\nu}\ensuremath{\beta}\ensuremath{\beta}$) decay of two-neutron system $nn\ensuremath{\rightarrow}pp{e}^{\ensuremath{-}}{e}^{\ensuremath{-}}$ constitutes a key building block nuclear-structure calculations heavy nuclei employed in large-scale $0\ensuremath{\nu}\ensuremath{\beta}\ensuremath{\beta}$ searches. Assuming that process is mediated by light-Majorana-neutrino exchange, systematic analysis chiral effective...
A bstract At the Deep Underground Neutrino Experiment (DUNE), a proton beam hits fixed target leading to large production rates of mesons. These mesons can decay and potentially provide source long-lived neutral fermions. Examples such fermions are heavy leptons which mix with standard-model active neutrinos, bino-like lightest neutralino in R-parity-violating supersymmetry. We show that Standard Model Effective Field Theory extended right-handed singlet neutrinos simultaneously describe...
We set up the framework for calculation of electric dipole moments (EDMs) light nuclei using systematic expansion provided by chiral effective field theory (EFT). take into account parity ($P$) and time-reversal ($T$) violation which, at quark-gluon level, originates from QCD vacuum angle dimension-six operators capturing physics beyond standard model. argue that EDMs can be expressed in terms six low-energy constants appear $P$- $T$-violating nuclear potential current. As examples, we...
Recent lattice QCD calculations of direct CP violation in $K_L \to \pi \pi$ decays indicate tension with the experimental results. Assuming this to be real, we investigate a possible beyond-the-Standard Model explanation via right-handed charged currents. By using chiral perturbation theory combination results, accurately calculate modification $\epsilon'/\epsilon$ induced by currents and extract values couplings that are necessary explain discrepancy, pointing scale around $10^2$ TeV. We...
We investigate direct and indirect constraints on the complete set of anomalous CP-violating Higgs couplings to quarks gluons originating from dimension-6 operators, by studying their signatures at LHC in electric dipole moments (EDMs). show that existing uncertainties hadronic nuclear matrix elements have a significant impact interpretation EDM experiments, we quantify improvements needed fully exploit power searches. Currently, best bounds interactions come combination measurements data...
We present a master formula describing the neutrinoless-double-beta decay ($0\nu\beta\beta$) rate induced by lepton-number-violating (LNV) operators up to dimension nine in Standard Model Effective Field Theory. provide an end-to-end framework connecting possibly very high LNV scale nuclear scale, through chain of effective field theories. Starting at electroweak we integrate out heavy degrees freedom and match $SU(3)_c\otimes U(1)_{\mathrm{em}}$ theory. After evolving resulting Lagrangian...
We provide a consistent and complete calculation of the electric dipole moments deuteron, helion, triton in framework chiral effective field theory. The CP-conserving CP-violating interactions are treated on equal footing we consider one-, two-, three-nucleon operators up to next-to-leading-order power counting. In particular, calculate for first time EDM contributions induced by three-pion operator. find that effects nucleon-nucleon contact larger than those found previous studies based...
We discuss direct and indirect probes of chirality-flipping couplings the top quark to Higgs gauge bosons, considering both $CP$-conserving $CP$-violating observables, in framework Standard Model effective field theory. In our analysis we include current prospective constraints from collider physics, precision electroweak tests, flavor electric dipole moments (EDMs). find that low-energy are very competitive, even after accounting for long-distance uncertainties. particular, EDMs put on 2 3...
We investigate electroweak baryogenesis within the framework of Standard Model Effective Field Theory. The Lagrangian is supplemented by dimension-six operators that facilitate a strong first-order phase transition and provide sufficient CP violation. Two explicit scenarios are studied related via classical equations motion therefore identical at leading order in effective field theory expansion. demonstrate formally higher-order dimension-eight corrections lead to large modifications...
A new method to determine the spin tune is described and tested. In an ideal planar magnetic ring, tune-defined as number of precessions per turn-is given by ν(s)=γG (γ Lorentz factor, G gyromagnetic anomaly). At 970 MeV/c, deuteron spins coherently precess at a frequency ≈120 kHz in Cooler Synchrotron COSY. The deduced from up-down asymmetry deuteron-carbon scattering. time interval 2.6 s, was determined with precision order 10^{-8}, 1×10^{-10} for continuous 100 s accelerator cycle. This...