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Article
Determination of the Dalitz plot parameter \( \alpha\) for the decay \( \eta\) → 3 \( \pi^{0}_{}\) with the Crystal Ball at MAMI-B
A precise measurement of the Dalitz plot parameter, \( \alpha\) , for the
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Article
Double pion photoproduction off 40Ca
The photoproduction of π 0 π 0 and π 0 π ± pairs off 40Ca has been investigated with the TAPS detector using the Glasgow photon tagging spectrometer at the Mainz MAMI accelerator. Data have been taken for inciden...
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Article
First measurements of the 16O(e, e'pn)14N reaction
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Article
First measurements of the 16O(e, e'pn)14N reaction
This paper reports on the first measurement of the 16O(e, e'pn)14N reaction. Data were measured in kinematics centred on a super-parallel geometry at energy and momentum transfers of 215MeV and 316MeV/c. The expe...
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Article
Measurement of the electric form factor of the neutron at Q2 = 0.3-0.8 (GeV/ c) 2 ⋆
The electric form factor of the neutron, GE,n, has been measured at the Mainz Microtron by recoil polarimetry in the quasielastic D(¯e, e’¯n)p reaction. Three data points have been extracted at squared four-momen...
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Article
Measurement of the πmeson polarizabilities via the γp → γπ+n reaction
An experiment on the radiative π{+}-meson photoproduction from the proton ( γp → γπ{+}n) was carried out at the Mainz Microtron MAMI in the kinematic region 537MeV < Eγ < 817MeV, 140°≤
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Article
Photoproduction of πmesons from nuclei
Photoproduction of neutral pions from nuclei (carbon, calcium, niobium, lead) has been studied for incident-photon energies from 200 MeV to 800 MeV with the TAPS detector using the Glasgow photon tagging spect...
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Article
Threshold enhancement in η photoproduction from 2H and 4He
The photoproduction of η-mesons from 2H and 4He has been studied for energies close to the production thresholds. The experiments were carried out with the tagged photon beam of the Mainz MAMI accelerator. The η-...
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Article
The angular distribution of the 12C(γ,pn) reaction for Eγ=120−150 MeV
The angular distribution of nucleons emitted in the 12C(γ,pn) reaction has been measured using tagged photons at the Mainz microtron MAMI. The variation of the reaction strength with the polar angles of the two ...