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  1. Article

    Open Access

    The BGOOD experimental setup at ELSA

    The BGOOD experiment at the ELSA facility in Bonn has been commissioned within the framework of an international collaboration. The experiment pursues a systematic investigation of non-strange and strange meso...

    S. Alef, P. Bauer, D. Bayadilov, R. Beck, M. Becker in The European Physical Journal A (2020)

  2. Article

    Open Access

    Experimental study of the \( \gamma p \rightarrow K^{0}\Sigma^{+}\), \( \gamma n \rightarrow K^{0} \Lambda\), and \( \gamma n \rightarrow K^{0} \Sigma^{0}\) reactions at the Mainz Microtron

    This work measured \( \mathrm{d}\sigma/\mathrm{d}\Omega\)dσ/dΩ for neutral kaon photoproduction reactions from threshold up to a c.m. energy of 1855MeV, focussing specifically on the $ \gamma p\rightarrow K^0\Sigma...

    C. S. Akondi, K. Bantawa, D. M. Manley, S. Abt in The European Physical Journal A (2019)

  3. No Access

    Article

    Determination of the scalar polarizabilities of the proton using beam asymmetry \(\Sigma_{3}\) in Compton scattering

    The scalar dipole polarizabilities, \(\alpha_{E1}\) ...

    V. Sokhoyan, E. J. Downie, E. Mornacchi, J. A. McGovern in The European Physical Journal A (2017)

  4. Article

    Open Access

    Photon asymmetry measurements of \(\overrightarrow{\gamma}p \rightarrow \pi^{0} p\) for \(E_{\gamma}=\) 320-650 MeV

    High-statistics measurements of the photon asymmetry \(\Sigma\) Σ ...

    S. Gardner, D. Howdle, M. H. Sikora, Y. Wunderlich in The European Physical Journal A (2016)

  5. No Access

    Article

    Photoproduction of \(\eta\) \(\pi\) pairs off nucleons and deuterons

    Quasi-free photoproduction of \(\pi\eta\) -pairs has been investigated from threshold up to incident photon energies of ...

    A. Käser, F. Müller, J. Ahrens, J. R. M. Annand in The European Physical Journal A (2016)

  6. Article

    Open Access

    Photoproduction of \( \pi^{0}\) -pairs off protons and off neutrons

    Total cross sections, angular distributions, and invariant-mass distributions have been measured for the photoproduction of $ \pi^{0}\...

    M. Dieterle, M. Oberle, J. Ahrens, J. R. M. Annand in The European Physical Journal A (2015)

  7. Article

    Open Access

    First measurement of the \(\Sigma\) beam asymmetry in \(\eta^{\prime}\) photoproduction off the proton near threshold

    The \( \Sigma\) beam asymmetry in $ \eta^...

    P. Levi Sandri, G. Mandaglio, V. De Leo, O. Bartalini in The European Physical Journal A (2015)

  8. No Access

    Article

    Helicity dependence of the γ 3He → πX reactions in the Δ(1232) resonance region

    The helicity dependences of the differential cross sections for the semi-inclusive γ 3He → π0 X and γ 3He → π± X reactions have been measured for th...

    S. Costanza, A. Mushkarenkov, F. Rigamonti, M. Romaniuk in The European Physical Journal A (2014)

  9. Article

    Open Access

    Measurement of the beam-helicity asymmetry I in the photoproduction of \( \pi^{0}\) \( \pi^{\pm}\) pairs off protons and off neutrons

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

    M. Oberle, J. Ahrens, J. R. M. Annand, H. J. Arends in The European Physical Journal A (2014)

  10. Article

    Open Access

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

    Quasi-free photoproduction of η-mesons has been measured off nucleons bound in 3He nuclei for incident photon energies from the threshold region up to 1.4 GeV. The experiment was performed at the tagged photon fa...

    L. Witthauer, D. Werthmüller, I. Keshelashvili in The European Physical Journal A (2013)

  11. No Access

    Article

    In-medium modifications of the ω meson near the production threshold

    The in-medium properties of the ω meson were investigated at the MAMI-C electron accelerator using the Crystal Ball/TAPS detector system to identify ω mesons through their ωπ 0 ...

    M. Thiel, V. Metag, P. Aguar Bartolome, L. K. Akasoy in The European Physical Journal A (2013)

  12. Article

    Open Access

    Measurements of 12C \((\vec{\gamma},pp)\) photon asymmetries for \(E_{\gamma}=200\) –450 MeV

    The 12C \((\vec{\gamma},pp)\) reaction has been studied in the photon energy range 200-450 MeV at the Mainz microtron MA...

    J. Robinson, I. J. D. MacGregor, J. R. M. Annand in The European Physical Journal A (2013)