433 citations · 3.1k across the 63 of their papers we have counts for
40 papers · 1 filter
Measurement of the α-particle monopole transition form factor challenges theory: a low-energy puzzle for nuclear forces?
S. Kegel, P. Achenbach, S. Bacca +30
We perform a systematic study of the -particle excitation from its ground state to the resonance. The so-called monopole transition form factor is investigated v…
Measurement of the reaction close to threshold and at low
A1 Collaboration, I. Friščić, P. Achenbach +21
The cross section of the reaction has been measured for five kinematic settings at an invariant mass of MeV and for a four-momentum transfer of $Q^2 = 0.07…
Solution of the proton radius puzzle? Low momentum transfer electron scattering data are not enough
Michael O. Distler, Thomas Walcher, Jan C. Bernauer
In two recent papers it is argued that the 'proton radius puzzle' can be explained by truncating the electron scattering data to low momentum transfer and fit the rms radius in the…
Neutron skin of Pb from Coherent Pion Photoproduction
C. M. Tarbert, D. P. Watts, D. I. Glazier +57
Information on the size and shape of the neutron skin on Pb has been extracted from coherent pion photoproduction cross sections measured using the Crystal Ball together wi…
Measurements of the γ* p --> Δ(1232) reaction at low Q2
N. Sparveris, S. Stave, P. Achenbach +29
We report new p measurements in the resonance at the low momentum transfer region utilizing the magnetic spectrometers of the A1 Collabor…
The electric and magnetic form factors of the proton
A1 Collaboration, J. C. Bernauer, M. O. Distler +21
The paper describes a precise measurement of electron scattering off the proton at momentum transfers of \ GeV. The average point-to-point error…