activity
20112025
most citedCoherent photoproduction of eta-mesons off 3He - search for eta-mesic nuclei

84 citations · 1.2k across the 49 of their papers we have counts for

collaborators

50 papers

hep-ex2025

New high-statistics measurement of the Dalitz decay at the Mainz Microtron

S. Prakhov, L. Heijkenskjöld, S. Abt +69

The Dalitz decay has been measured with the highest statistical accuracy obtained so far in the reaction with the A2 tagged-photon facility at the M…

nucl-ex2024

First measurement using elliptically polarized photons of the double-polarization observable for and

A2 Collaboration, F. Afzal, K. Spieker +74

We report the measurement of the helicity asymmetry for the and final states using, for the first time, an elliptically polarized photon beam in combination with…

nucl-ex2023★ 2 cited

Helicity dependent cross sections for the photoproduction of pairs from quasi-free nucleons

A2 Collaboration, D. Ghosal, V. Sokhoyan +71

Photoproduction of -pairs from quasifree nucleons bound in the deuteron has been investigated to study the helicity dependence of this reaction. Measurements with a liq…

nucl-ex2022★ 4 cited

Polarization observables in double neutral pion photoproduction

TAPS Collaboration, T. Seifen, J. Hartmann +73

Measurements of target asymmetries and double-polarization observables for the reaction are reported. The data were taken with the CBELSA/TAPS experiment at the ELS…

nucl-ex2022★ 1 cited

Measurement of the helicity dependence for single photoproduction from the deuteron

The A2 collaboration, F. Cividini, M. Dieterle +72

The helicity-dependent single photoproduction cross section on the deuteron and the angular dependence of the double polarisation observable for the quasi-free single $…

nucl-ex2021★ 11 cited

Observation of a structure in the M invariant mass distribution near 1700 MeV/ in the reaction

V. Metag, M. Nanova, J. Hartmann +74

The reaction has been studied with the CBELSA/TAPS detector at the electron stretcher accelerator ELSA in Bonn for incident photon energies from threshold…

nucl-ex2021★ 2 cited

Single Production Off Neutrons Bound in Deuteron with Linearly Polarized Photons

C. Mullen, S. Gardner, D. I. Glazier +79

The quasifree photon beam asymmetry, , has been measured at photon energies, , from 390 to 610 MeV, corresponding to center of mass energy fr…

nucl-ex2020★ 20 cited

Observation of the Cusp in the New Precise Beam Asymmetry Data for

TAPS Collaboration

Data on the beam asymmetry in the photoproduction of mesons off protons are reported for tagged photon energies from 1130 to 1790 MeV (mass range from 1748 MeV to …

nucl-ex2020★ 9 cited

Helicity-dependent cross sections for the photoproduction of pairs from nucleons

M. Dieterle, L. Witthauer, A. Fix +88

The double-polarization observable and helicity-dependent cross sections , have been measured for the photoproduction of pairs off quasi-free protons a…

nucl-ex2019★ 26 cited

New data on with polarized photons and protons and their implications for decays

J. Müller, J. Hartmann, M. Grüner +86

The polarization observables , and in photoproduction of mesons off protons are measured for photon energies from threshold to MeV (), 2280 MeV ($E…

nucl-ex2019★ 14 cited

Spin polarizabilities of the proton by measurement of Compton double-polarization observables

D. Paudyal, P. P. Martel, G. M. Huber +90

The Compton double-polarization observable has been measured for the first time in the resonance region using a circularly polarized photon beam incident on a lo…

nucl-ex2019★ 3 cited

Measurement of the beam-helicity asymmetry in photoproduction of pairs on carbon, aluminum, and lead

V. Sokhoyan, S. Prakhov, A. Fix +88

The beam-helicity asymmetry was measured, for the first time, in photoproduction of pairs on carbon, aluminum, and lead, with the A2 experimental setup at MAMI. The result…

nucl-ex2019★ 2 cited

Measurement of the Helicity Asymmetry for the reaction

TAPS collaboration, M. Gottschall, F. Afzal +66

A measurement of the double-polarization observable for the reaction is reported. The data were taken with the CBELSA/TAPS experiment at the ELSA facility in Bonn…

nucl-ex2018★ 21 cited

Experimental study of the , , and reactions at the Mainz Microtron

C. S. Akondi, K. Bantawa, D. M. Manley +78

This work measured for neutral kaon photoproduction reactions from threshold up to a c.m.\ energy of 1855MeV, focussing specifically on the , $γn\righ…

nucl-ex2018★ 9 cited

First measurement of helicity-dependent cross sections in pi0-eta photoproduction from quasi-free nucleons

A. Käser, M. Dieterle, L. Witthauer +80

The helicity-dependent cross sections for the photoproduction of pairs have been measured for the first time. The experiment was performed at the tagged photon facility of t…

hep-ex2018★ 16 cited

High-statistics measurement of the eta->3pi^0 decay at the Mainz Microtron

S. Prakhov, S. Abt, P. Achenbach +85

The largest, at the moment, statistics of 7x10^6 eta->3pi^0 decays, based on 6.2x10^7 eta mesons produced in the gamma p -> eta p reaction, has been accumulated by the A2 Collabora…

hep-ex2017★ 9 cited

Measurement of the decay at MAMI

P. Adlarson, F. Afzal, C. S. Akondi +75

An experimental study of the decay has been conducted with the best up-to-date statistical accuracy, by measuring mesons produced in the re…

nucl-ex2017★ 24 cited

First measurement of the polarization observable and helicity-dependent cross sections in single photoproduction from quasi-free nucleons

M. Dieterle, L. Witthauer, F. Cividini +84

The double-polarization observable and the helicity-dependent cross sections and have been measured for the first time for single photoproduction fr…

nucl-ex2017★ 24 cited

Helicity-dependent cross sections and double-polarization observable E in eta photoproduction from quasi-free protons and neutrons

L. Witthauer, M. Dieterle, S. Abt +84

Precise helicity-dependent cross sections and the double-polarization observable were measured for photoproduction from quasi-free protons and neutrons bound in the deutero…

nucl-ex2017★ 16 cited

Photoproduction of eta mesons from the neutron: cross sections and double polarization observable E

L. Witthauer, M. Dieterle, F. Afzal +70

Photoproduction of mesons from neutrons} \abstract{Results from measurements of the photoproduction of mesons from quasifree protons and neutrons are summarized. The experi…

nucl-ex2017★ 31 cited

Insight into the narrow structure in {\boldmath{}}-photoproduction on the neutron from helicity dependent cross sections

L. Witthauer, M. Dieterle, S. Abt +83

The double polarization observable and the helicity dependent cross sections and were measured for photoproduction from quasi-free protons and neutrons.…

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…

hep-ex2016★ 32 cited

Measurement of the pi^0 -> e^+e^-gamma Dalitz decay at the Mainz Microtron

P. Adlarson, F. Afzal, P. Aguar-Bartolomé +94

The Dalitz decay pi^0 -> e^+e^-gamma has been measured in the gamma p -> pi^0 p reaction with the A2 tagged-photon facility at the Mainz Microtron, MAMI. The value obtained for the…

nucl-ex2016★ 22 cited

Determination of the scalar polarizabilities of the proton using beam asymmetry in Compton scattering

V. Sokhoyan, E. J. Downie, E. Mornacchi +73

The scalar dipole polarizabilities, and , are fundamental properties related to the internal dynamics of the nucleon. The currently accepted values of the proton p…