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  1. No Access

    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

    M. Unverzagt, P. Aguar-Bartolomé, J. Ahrens in The European Physical Journal A (2009)

  2. No Access

    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...

    F. Bloch, J. Ahrens, J. R. M. Annand, R. Beck, L. S. Fog in The European Physical Journal A (2007)

  3. Article

    First measurements of the 16O(e, e'pn)14N reaction

    D. G. Middleton, J. R. M. Annand in The European Physical Journal A - Hadrons … (2006)

  4. No Access

    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...

    D. G. Middleton, J. R. M. Annand in The European Physical Journal A - Hadrons … (2006)

  5. No Access

    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 De, e’¯n)p reaction. Three data points have been extracted at squared four-momen...

    D. I. Glazier, M. Seimetz, J. R. M. Annand in The European Physical Journal A - Hadrons … (2005)

  6. No Access

    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°

    J. Ahrens, V. M. Alexeev, J. R. M. Annand in The European Physical Journal A - Hadrons … (2005)

  7. No Access

    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...

    B. Krusche, J. Lehr, J. Ahrens in The European Physical Journal A - Hadrons … (2004)

  8. No Access

    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-...

    V. Hejny, J. Weiß, P. Achenbach, J. Ahrens in The European Physical Journal A - Hadrons … (2002)

  9. No Access

    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 ...

    T.T.-H. Yau, I.J.D. MacGregor, J. Ahrens in The European Physical Journal A - Hadrons … (1998)

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