329 citations · 3k across the 107 of their papers we have counts for
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Nucleon Polarizabilities: from Compton Scattering to Hydrogen Atom
Franziska Hagelstein, Rory Miskimen, Vladimir Pascalutsa
We review the current state of knowledge of the nucleon polarizabilities and of their role in nucleon Compton scattering and in hydrogen spectrum. We discuss the basic concepts, th…
Proton structure in the hyperfine splitting of muonic hydrogen
Franziska Hagelstein, Vladimir Pascalutsa
We present the leading-order prediction of baryon chiral perturbation theory for the proton polarizability contribution to the 2S hyperfine splitting in muonic hydrogen, and compar…
Direct calculation of hadronic light-by-light scattering
Jeremy Green, Nils Asmussen, Oleksii Gryniuk +4
We report calculations of hadronic light-by-light scattering amplitudes via lattice QCD evaluation of Euclidean four-point functions of vector currents. These initial results inclu…
Predictions of covariant chiral perturbation theory for nucleon polarisabilities and polarised Compton scattering
Vadim Lensky, Judith A. McGovern, Vladimir Pascalutsa
We update the predictions of the SU(2) baryon chiral perturbation theory for the dipole polarisabilities of the proton, $\{α_{E1},\,β_{M1}\}_p=\{11.2(0.7),\,3.9(0.7)\}\times10^{-4}…
Evaluation of the forward Compton scattering off protons: I. Spin-independent amplitude
Oleksii Gryniuk, Franziska Hagelstein, Vladimir Pascalutsa
We evaluate the forward Compton scattering off the proton, based on Kramers-Kronig kind of relations which express the Compton amplitudes in terms of integrals of total photoabsorp…
Lattice QCD calculation of hadronic light-by-light scattering
Jeremy Green, Oleksii Gryniuk, Georg von Hippel +2
We perform a lattice QCD calculation of the hadronic light-by-light scattering amplitude in a broad kinematical range. At forward kinematics, the results are compared to a phenomen…