A5082432952- Particle physics theoretical and experimental studies
- Quantum Chromodynamics and Particle Interactions
- Neutrino Physics Research
- High-Energy Particle Collisions Research
- Atomic and Subatomic Physics Research
- Dark Matter and Cosmic Phenomena
- Quantum, superfluid, helium dynamics
- Black Holes and Theoretical Physics
- Nuclear physics research studies
- Computational Physics and Python Applications
- Astrophysics and Cosmic Phenomena
- Particle Detector Development and Performance
- Cosmology and Gravitation Theories
- Nuclear Physics and Applications
- Superconducting Materials and Applications
- Advanced Chemical Physics Studies
- Physics of Superconductivity and Magnetism
- Particle accelerators and beam dynamics
- Pulsars and Gravitational Waves Research
- Medical Imaging Techniques and Applications
- Particle Accelerators and Free-Electron Lasers
- Nuclear and radioactivity studies
- Matrix Theory and Algorithms
- Radioactive Decay and Measurement Techniques
- Advanced NMR Techniques and Applications
University of Washington
2016-2025
Institute for Nuclear Science and Technology
2024-2025
Los Alamos National Laboratory
2014-2023
Michigan State University
2019-2023
Universitat de València
2002-2023
Laboratoire de Physique des 2 Infinis Irène Joliot-Curie
2023
Institut National de Physique Nucléaire et de Physique des Particules
2023
Université Paris-Saclay
2023
The University of Melbourne
2023
Centre National de la Recherche Scientifique
2023
A comprehensive overview of kaon decays is presented. The standard model predictions are discussed in detail, covering both the underlying short-distance electroweak dynamics and important interplay QCD at long distances. Chiral perturbation theory provides a universal framework for treating leptonic, semileptonic, nonleptonic including rare radiative modes. All allowed decay modes with branching ratios least ${10}^{\ensuremath{-}11}$ analyzed. Some even smaller rates also included. Decays...
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...
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...
Precision tests of first-row unitarity the Cabibbo-Kobayashi-Maskawa matrix currently display two intriguing tensions, both at $3\sigma$ level. First, combining determinations $V_{ud}$ from superallowed $\beta$ decays with $V_{us}$ kaon suggests a deficit in relation. At same time, tension similar significance has emerged between $K_{\ell 2}$ and 3}$ decays. In this Letter, we point out that measurement $K_{\mu3}/K_{\mu branching fraction level $0.2\%$ would have considerable impact on...
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...
We derive model-independent, "naturalness" upper bounds on the magnetic moments \mu_\nu of Dirac neutrinos generated by physics above scale electroweak symmetry breaking. In absence fine-tuning effective operator coefficients, we find that current information neutrino mass implies |\mu_\nu | < 10^(-14) Bohr magnetons. This bound is several orders magnitude stronger than those obtained from analyses solar and reactor data astrophysical observations.
We present a formulation of the quantum kinetic equations (QKEs), which govern evolution neutrino flavor at high density and temperature. Here, structure QKEs is derived from ground up, using fundamental interactions field theory. show that resulting describe coherent with an effective mass when inelastic scattering negligible. The also contain collision term. This term can reduce to in Boltzmann equation dominant masses matrices become diagonal interaction basis. find include motion for new...
We study the ratios R_{e/mu};{(P)} identical withGamma(P-->enu[over ]_{e}[gamma])/Gamma(P-->munu[over ]_{mu}[gamma]) (P=pi, K) in Chiral Perturbation Theory to order e;{2}p;{4}. complement two-loop effective theory results with a matching calculation of counterterm, finding R_{e/mu};{(pi)}=(1.2352+/-0.0001)x10;{-4} and R_{e/mu};{(K)}=(2.477+/-0.001)x10;{-5}.
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...
We present results for the isovector axial, scalar and tensor charges $g^{u-d}_A$, $g^{u-d}_S$ $g^{u-d}_T$ of nucleon needed to probe Standard Model novel physics. The axial charge is a fundamental parameter describing weak interactions nucleons. at TeV scale in neutron nuclear $\beta$-decays, flavor-diagonal $g^{u}_T$, $g^{d}_T$ $g^{s}_T$ are quantify contribution quark electric dipole moment (EDM) EDM. 9 ensembles, generated by MILC Collaboration using HISQ action with 2+1+1 dynamical...
We present high statistics results for the isovector charges $g^{u-d}_A$, $g^{u-d}_S$ and $g^{u-d}_T$ of nucleon. Calculations were carried out on eleven ensembles gauge configurations generated by MILC collaboration using highly improved staggered quarks (HISQ) action with 2+1+1 dynamical flavors. These span four lattice spacings $a \approx$ 0.06, 0.09, 0.12 0.15 fm light-quark masses corresponding to $M_\pi 135, 225 315 MeV. Excited-state contamination in nucleon 3-point correlation...
We present Lattice QCD results on the neutron tensor charges including, for first time, a simultaneous extrapolation in lattice spacing, volume, and light quark masses to physical point continuum limit. find that "disconnected" contribution is smaller than statistical error "connected" contribution. Our estimates $\bar{\text{MS}}$ scheme at $2$ GeV, including all systematics, are $g_T^{d-u}=1.020(76)$, $g_T^d = 0.774(66)$, $g_T^u - 0.233(28)$, $g_T^s 0.008(9)$. The flavor diagonal determine...
We present results for the isovector and flavor diagonal tensor charges ${g}_{T}^{u\ensuremath{-}d}$, ${g}_{T}^{u}$, ${g}_{T}^{d}$, ${g}_{T}^{s}$ needed to probe novel interactions at TeV scale in neutron nuclear $\ensuremath{\beta}$-decays contribution of quark electric dipole moment (EDM) EDM. The lattice QCD calculations were done using nine ensembles gauge configurations generated by MILC collaboration HISQ action with $2+1+1$ dynamical flavors. These span three spacings...
We model neutrino emission from a newly born neutron star subsequent to supernova explosion study its sensitivity the equation of state, opacities, and convective instabilities at high baryon density. find time period spatial extent over which convection operates is sensitive behavior nuclear symmetry energy above When ends within protoneutron star, there break in predicted that may be clearly observable.
It has been pointed out recently that current low-energy constraints still allow for sizable flavor-changing decay rates of the 125 GeV boson into leptons, h -> tau ell (ell= e, mu). In this work we discuss role hadronic tau-lepton decays in probing lepton flavor violating couplings Higgs sector. At low energy, effective coupling to gluons induced by heavy quarks contributes decays, establishing a direct connection with relevant process at LHC, pp (gg)-> ell. Semileptonic transitions like pi...
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...