27 citations · 108 across the 14 of their papers we have counts for
14 papers
First Measurement of Near- and Sub-Threshold Photoproduction off Nuclei
J. R. Pybus, L. Ehinger, T. Kolar +65
We report on the first measurement of photoproduction from nuclei in the photon energy range of to GeV, extending above and below the photoproduction threshold in…
Nuclear density dependence of polarization transfer in quasi-elastic reactions
T. Kolar, W. Cosyn, C. Giusti +52
The ratio of the transverse and longitudinal component of polarization transfer to protons in the quasi-elastic reaction, $P^{\prime}_x/P^{\prime}…
Search for axion-like particles through nuclear Primakoff production using the GlueX detector
J. R. Pybus, T. Kolar, B. Devkota +40
We report on the results of the first search for the production of axion-like particles (ALP) via Primakoff production on nuclear targets using the GlueX detector. This search uses…
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…
Measurements of the electron-helicity asymmetry in the quasi-elastic process
Tim Kolar, Sebouh J. Paul, Patrick Achenbach +43
We present measurements of the electron helicity asymmetry in quasi-elastic proton knockout from H and C nuclei by polarized electrons. This asymmetry depends on the f…
Operation and characterization of a windowless gas jet target in high-intensity electron beams
B. S. Schlimme, S. Aulenbacher, P. Brand +54
A cryogenic supersonic gas jet target was developed for the MAGIX experiment at the high-intensity electron accelerator MESA. It will be operated as an internal, windowless target…
Electron beam studies of light collection in a scintillating counter with embedded fibers
M. Lauß, P. Achenbach, S. Aulenbacher +28
The light collection of several fiber configurations embedded in a box-shaped plastic scintillating counter was studied by scanning with minimum ionizing electrons. The light was r…
Measurements of the induced polarization in the quasi-elastic process in non-coplanar kinematics
Sebouh J. Paul, Tim Kolar, Tilen Brecelj +44
We report measurements of the induced polarization of protons knocked out from H and C via the reaction. We have studied the dependence of $\v…
Comparison of recoil polarization in the process for protons extracted from and shell
T. Kolar, S. Paul, T. Brecelj +29
We present first measurements of the double ratio of the polarization transfer components f…
Polarization transfer to bound protons measured by quasi-elastic electron scattering on C
Tilen Brecelj, Sebouh J. Paul, Tim Kolar +29
We report the measurements of the transverse () and longitudinal () components of the polarization transfer to a bound proton in carbon via the quasi-free $^{12}{\rm C}(\…
Quasi-elastic polarization-transfer measurements on the deuteron in anti-parallel kinematics
Sebouh J. Paul, David Izraeli, Tilen Brecelj +41
We present measurements of the polarization-transfer components in the H reaction, covering a previously unexplored kinematic region with large positive (ant…
The influence of Fermi motion on the comparison of the polarization transfer to a proton in elastic and quasi-elastic scattering
S. Paul, T. Brecelj, H. Arenhövel +35
A comparison between polarization-transfer to a bound proton in quasi-free kinematics by the A knockout reaction and that in elastic scattering off a free proto…
Measurement of polarization-transfer to bound protons in carbon and its virtuality dependence
A1 Collaboration, D. Izraeli, T. Brecelj +26
We measured the ratio of the transverse to longitudinal components of polarization transferred from electrons to bound protons in by the $^{12}\math…
Vertical Beam Polarization at MAMI
B. S. Schlimme, P. Achenbach, K. Aulenbacher +35
For the first time a vertically polarized electron beam has been used for physics experiments at MAMI in the energy range between 180 and 855 MeV. The beam-normal single-spin asymm…