A5020385899- Particle physics theoretical and experimental studies
- Nuclear physics research studies
- Neutrino Physics Research
- Dark Matter and Cosmic Phenomena
- Quantum Chromodynamics and Particle Interactions
- Atomic and Subatomic Physics Research
- Computational Physics and Python Applications
- Atomic and Molecular Physics
University of Washington
2023-2025
Institute for Nuclear Science and Technology
2025
Hebrew University of Jerusalem
2017-2023
Czech Academy of Sciences, Institute of Physics
2019
Precision measurements of $\beta$-decay observables offer the possibility to search for deviations from Standard Model. A possible discovery such requires accompanying first-principles calculations. Here we compute nuclear structure corrections $^6$He which is central interest in several experimental efforts. We employ impulse approximation together with wave functions calculated using ab initio no-core shell model potentials based on chiral effective field theory. use these state-of-the-art...
We report an exploratory study of the <a:math xmlns:a="http://www.w3.org/1998/Math/MathML" display="inline"><a:mi mathvariant="script">O</a:mi><a:mo stretchy="false">(</a:mo><a:mi>α</a:mi><a:mo stretchy="false">)</a:mo></a:math> structure-dependent electromagnetic radiative corrections to unique first-forbidden nuclear beta decays. show that insertion angular momentum into matrix element by virtual or real photon exchange opens up decay at vanishing recoil which was forbidden tree level,...
Within the Standard Model, weak interaction of quarks and leptons is characterized by certain symmetry properties, such as maximal breaking parity favored helicity. These are related to $V-A$ structure interaction. characteristics were discovered studying correlations in directions outgoing nuclear beta decays. days, correlation measurements decays intensively studied probe for signatures deviations from these symmetries, which an indication Beyond Model physics. We show that energy spectrum...
A multipole decomposition of a cross section is useful tool to simplify the analysis reactions due their symmetry properties. By using new approach decompose antisymmetric tensor-type interactions within analysis, we introduce general mathematical formalism for working with tensor couplings. This allows us present nuclear response, which particularly ongoing $\ensuremath{\beta}$-decay experiments looking physics beyond Standard Model (BSM), as well other exotic particle scatterings off...
The nonrelativistic effective field theory (NRET) is widely used in dark matter direct detection and charged-lepton flavor violation studies through <a:math xmlns:a="http://www.w3.org/1998/Math/MathML" display="inline"><a:mi>μ</a:mi><a:mo stretchy="false">→</a:mo><a:mi>e</a:mi></a:math> conversion. However, existing literature has not fully considered tensor couplings. This study fills this gap by utilizing an innovative decomposition method, extending NRET to incorporate previously...
Multiple high precision $β$-decay measurements are being carried out these days on various nuclei, in search of beyond the Standard Model signatures. These necessitate accurate standard model theoretical predictions to be compared with. Motivated by experimental surge, we present a formalism for such calculation observables, with controlled accuracy, based perturbative analysis observables related phenomena, including order nuclear recoil and shape corrections. The accuracy corrections is...
We report the first study of $\mathcal{O}(\alpha)$ structure-dependent electromagnetic radiative corrections to unique first-forbidden nuclear beta decays. show that insertion angular momentum into matrix element by virtual/real photon exchange opens up decay at vanishing recoil which was forbidden tree level, leading a dramatic change in spectrum not anticipated existing studies. discuss its implications for precision tests on Standard Model and searches new physics.
Measurements of the beta-neutrino correlation coefficient (a$_{βν}$) in nuclear beta decay, together with Fierz interference term (b$_F$), provide a robust test for existence exotic interactions beyond Standard Model Particle Physics. The extraction these quantities from recoil ion spectra $β$-decay requires accurate knowledge, decay branching ratios, and high-precision calculations higher order effects. Here, we report on new measurement $^{23}$Ne ratio, which allows reanalysis existing...
We describe the branching ratio measurement experiment performed at Soreq Applied Research Accelerator Facility (SARAF) using deuteron beam. successfully produced 107/s 23Ne atoms in run and used them to measure beta decay first excited state of 23Na. provide some preliminary results whose data analysis currently ongoing.
In recent years, the non-relativistic effective theory (NRET) has been widely used for direct detection of dark matter and $\mu \to e$ conversion. Nevertheless, existing literature not fully considered tensor interactions, introducing a critical gap in our understanding. This study addresses this omission by integrating amplitudes into NRET framework, employing novel approach decomposing antisymmetric tensor-type interactions. work establishes connection between Galilean-invariant operators....
A multipole decomposition of a cross-section is useful tool to simplify the analysis reactions due their symmetry properties. By using new approach decompose antisymmetric tensor-type interactions within analysis, we introduce general mathematical formalism for working with tensor couplings. This allows us present nuclear response, which particularly ongoing beta-decay experiments looking physics beyond Standard Model, as well other exotic particle scatterings off nuclei, e.g., in dark...