activity
20122017
most citedCoherent photoproduction of eta-mesons off 3He - search for eta-mesic nuclei

84 citations · 534 across the 16 of their papers we have counts for

collaborators

17 papers

nucl-ex2017★ 55 cited

Study of and photoproduction at MAMI

V. L. Kashevarov, P. Ott, S. Prakhov +87

The reactions and have been measured from their thresholds up to the center-of-mass energy GeV with the tagged-photon facilities at the Mainz Microt…

nucl-ex2016★ 21 cited

Photoproduction ofeta-pi pairs off nucleons and deuterons

A. Kaeser, F. Mueller, J. Ahrens +66

Quasi-free photoproduction of -pairs has been investigated from threshold up to incident photon energies of 1.4 GeV, respectively up to photon-nucleon invariant masses up to 1.…

nucl-ex2016★ 11 cited

Photon asymmetry measurements of for E=320650 MeV

S. Gardner, D. Howdle, M. H. Sikora +97

High statistics measurements of the photon asymmetry for the pp reaction have been made in the center of mass energy range W=1214-145…

nucl-ex2015

Photoproduction of -pairs off protons and off neutrons

M. Dieterle, M. Oberle, J. Ahrens +71

Total cross sections, angular distributions, and invariant-mass distributions have been measured for the photoproduction of pairs off free protons and off nucleons bound i…

nucl-ex2015

The isospin structure of photoproduction of pi-eta pairs from the nucleon in the threshold region

A. Käser, J. Ahrens, J. R. M. Annand +71

Photoproduction of -pairs from nucleons has been investigated from threshold up to incident photon energies of ~1.4~GeV. The quasi-free reactions …

nucl-ex2015★ 10 cited

First measurement of target and beam-target asymmetries in the reaction

J. R. M. Annand, H. J. Arends, R. Beck +64

The first data on target and beam-target asymmetries for the reaction at photon energies from 1050 up to 1450 MeV are presented. The measurements were performed using…

nucl-ex2014★ 45 cited

Measurement of the transverse target and beam-target asymmetries in meson photoproduction at MAMI

C. S. Akondi, J. R. M. Annand, H. J. Arends +67

We present new data for the transverse target asymmetry T and the very first data for the beam-target asymmetry F in the reaction up to a center-of-mass energy…

nucl-ex2014★ 42 cited

Measurements of Double-Polarized Compton Scattering Asymmetries and Extraction of the Proton Spin Polarizabilities

P. P. Martel, R. Miskimen, P. Aguar-Bartolome +76

The spin polarizabilities of the nucleon describe how the spin of the nucleon responds to an incident polarized photon. The most model-independent way to measure the nucleon spin p…

nucl-ex2014★ 59 cited

Quasifree photoproduction of mesons off protons and neutrons

A2 Collaboration, D. Werthmüller, L. Witthauer +72

Differential and total cross sections for the quasifree reactions and have been determined at the MAMI-C electron accelerator using a liquid deu…

hep-ex2014★ 28 cited

A new measurement of the rare decay eta -> pi^0 gamma gamma with the Crystal Ball/TAPS detectors at the Mainz Microtron

B. M. K. Nefkens, S. Prakhov, P. Aguar-Bartolomé +76

A new measurement of the rare, doubly radiative decay eta->pi^0 gamma gamma was conducted with the Crystal Ball and TAPS multiphoton spectrometers together with the photon tagging…

nucl-ex2014★ 28 cited

Photoproduction of pi0-mesons off neutrons in the nucleon resonance region

M. Dieterle, I. Keshelashvili, J. Ahrens +71

Precise angular distributions have been measured for the first time for the photoproduction of -mesons off neutrons bound in the deuteron. The effects from nuclear Fermi mot…

nucl-ex2014★ 22 cited

Measurement of the beam-helicity asymmetry in the photoproduction of -pairs off protons and off neutrons

M. Oberle, J. Ahrens, J. R. M. Annand +72

Beam-helicity asymmetries have been measured at the MAMI accelerator in Mainz for the photoproduction of mixed-charge pion pairs in the reactions …

nucl-ex2013★ 29 cited

Quasi-free photoproduction of eta-mesons off 3He nuclei

L. Witthauer, D. Werthmueller, I. Keshelashvili +70

Quasi-free photoproduction of -mesons has been measured off nucleons bound in He nuclei for incident photon energies from the threshold region up to 1.4 GeV. The experiment…

nucl-ex2013★ 48 cited

A narrow structure in the excitation function of eta-photoproduction off the neutron

D. Werthmueller, L. Witthauer, I. Keshelashvili +69

The photoproduction of -mesons off nucleons bound in H and He has been measured in coincidence with recoil protons and recoil neutrons for incident photon energies from…

hep-ex2013★ 22 cited

Measurement of the g p -> K^0 Sigma^+ reaction with the Crystal Ball/TAPS detectors at the Mainz Microtron

P. Aguar-Bartolomé, J. R. M. Annand, H. J. Arends +75

The g p -> K^0 Sigma^+ reaction has been measured from threshold to Eg=1.45 GeV (W_cm=1.9 GeV) using the Crystal Ball and TAPS multiphoton spectrometers together with the photon ta…

nucl-ex2013★ 30 cited

Measurement of the beam-helicity asymmetry in the photoproduction of -pairs off the proton and off the neutron

M. Oberle, B. Krusche, J. Ahrens +72

Beam-helicity asymmetries have been measured at the MAMI accelerator in Mainz for the photoproduction of neutral pion pairs in the reactions and $\vecγd…

nucl-ex2012★ 84 cited

Coherent photoproduction of eta-mesons off 3He - search for eta-mesic nuclei

F. Pheron, J. Ahrens, J. R. M. Annand +71

Coherent photoproduction of -mesons off He, i.e. the reaction , has been investigated in the near-threshold region. The experiment was performed…