332 citations · 701 across the 21 of their papers we have counts for
21 papers
Precise measurement of the -binding energy difference between H and H via decay-pion spectroscopy at MAMI
Ryoko Kino, Sho Nagao, Patrick Achenbach +31
We performed high-precision decay-pion spectroscopy of light hypernuclei at the Mainz Microtron (MAMI) using the A1 spectrometer facility. By measuring the monochromatic …
Measurement of the helicity-dependent response in quasi-elastic proton knockout from
Tim Kolar, Iris Sabo-Napadensky, Patrick Achenbach +34
The role of the electron-helicity-dependent cross-section term and the structure function in the quasi-elastic process was studied. The…
Measurement of ground state energy in an electron scattering experiment at MAMI-A1
Tianhao Shao, Jinhui Chen, Josef Pochodzalla +28
For the first time the neutron-rich hydrogen isotope was produced in an electron scattering experiment in the reaction using the spectrom…
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…
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…
Development of large area focal plane detectors for MAGIX
P. Gülker, P. Achenbach, S. Aulenbacher +20
MAGIX is a planned experiment that will be implemented at the upcoming accelerator MESA in Mainz. Due to its location in the energy-recovering lane of the accelerator beam-currents…
The proton charge radius extracted from the Initial State Radiation experiment at MAMI
Miha Mihovilovič, Patrick Achenbach, Tobias Beranek +32
We report on a comprehensive reinterpretation of the existing cross-section data for elastic electron-proton scattering obtained by the initial-state radiation technique, resulting…
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…
Feasibility study for the measurement of TDAs at PANDA in
PANDA Collaboration, B. Singh, W. Erni +508
The exclusive charmonium production process in annihilation with an associated meson is studied in the framework of QCD collinear factorizatio…
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…
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…
A Large-Scale FPGA-Based Trigger and Dead-Time Free DAQ System for the Kaos Spectrometer at MAMI
P. Achenbach, C. Ayerbe Gayoso, J. C. Bernauer +24
The Kaos spectrometer is maintained by the A1 collaboration at the Mainz Microtron MAMI with a focus on the study of (e,e'K^+) coincidence reactions. For its electron-arm two verti…
Exclusive electroproduction of K+ Lambda and K+ Sigma^0 final states at Q^2 = 0.030-0.055 (GeV/c)^2
P. Achenbach, C. Ayerbe Gayoso, J. C. Bernauer +32
Cross section measurements of the exclusive p(e,e'K+)Lambda,Sigma^0 electroproduction reactions have been performed at the Mainz Microtron MAMI in the A1 spectrometer facility usin…
A new measurement of the structure functions and in virtual Compton scattering at 0.33 (GeV/c)
A1 Collaboration, P. Janssens, L. Doria +36
The cross section of the reaction has been measured at (GeV/c). The experiment was performed using the electron beam of the MAMI accelerator and t…
Measurement of the asymmetries in 3He(e,e'p)d and 3He(e,e'p)np
P. Achenbach, D. Baumann, R. Boehm +48
The electron-target-asymmetries A_parallel and A_perpendicular with target spin parallel and perpendicular to the momentum transfer q were measured for both the two-- and three-bod…
Measurement of the Electric Form Factor of the Neutron at Q^2 = 0.3-0.8 (GeV/c)^2
D. I. Glazier, M. Seimetz, J. R. M. Annand +41
The electric form factor of the neutron, G_En, has been measured at the Mainz Microtron by recoil polarimetry in the quasielastic D(e_pol,e'n_pol)p reaction. Three data points have…
Neutral pion threshold production at Q^2=0.05 GeV^2/c^2 and Chiral Perturbation Theory
Harald Merkel, Peter Bartsch, Dagmar Baumann +31
New data are presented on the p(e,e'p)π^0 reaction at threshold at a four-momentum transfer of Q^2=0.05 GeV^2/c^2. The data were taken with the three-spectrometer setup of the A1 C…
Observation of a unitary cusp in the threshold γp -> π^{0}p reaction
A. M. Bernstein, E. Shuster, R. Beck +4
A rigorous multipole analysis of the recent γp -> π^{0}p cross section measurement is presented. The data were taken using the photon spectrometer TAPS at the tagged photon beam of…