activity
20242026
collaborators

8 papers

nucl-th2026

Parity violation in atoms: neutrino-mediated long range forces and finite nuclear size

Mikhail Gorchtein, Hubert Spiesberger

We consider neutral-current parity-violating interactions in an atom mediated by the exchange of a neutrino-antineutrino pair. We explicitly account for the nuclear finite size enc…

nucl-th2026

Taming nuclear size and shape effects in superallowed beta-decay

Bingcheng He, Mikhail Gorchtein, Matthias Heinz +3

We present the first combined analysis of the statistical rate function f in superallowed beta decays with ab initio calculations and data. We focus on C10 to 10B, 14O to 14N and 2…

nucl-ex2026

Charge radii of Cl isotopes from x-ray spectroscopy of muonic atoms

K. A. Beyer, T. E. Cocolios, C. Costache +25

Nuclear charge radii are vital for nuclear and atomic physics, the determination of fundamental constants, and searches for new physics. Muonic atoms, where a single negative muon…

nucl-ex2026

Towards better nuclear charge radii

István Angeli, Dimiter L. Balabanski, Paraskevi Dimitriou +16

Nuclear charge radii constitute a physical observable of growing significance across multiple subdisciplines of physics and related fields. Their determination relies on a combinat…

hep-lat2026

Lattice QCD determination of the box contribution to the proton weak charge

Zhao-long Zhang, Xu Feng, Mikhail Gorchtein +3

We present the first lattice QCD determination of the box contribution to parity-violating electron-proton scattering, , a key ingredient for the precise test…

nucl-th2026

A hitchhiker's guide to nuclear polarization in muonic atoms

Mikhail Gorchtein

I consider the so-called nuclear polarization correction to the 1S-levels in light to intermediate muonic atoms. An easy to use recipe to compute it is given. The calculation inclu…