Cross section for γn→π0n measured at the Mainz A2 experiment

Autor: K. Livingston, S. Lutterer, S. Gardner, N. S. Borisov, M. Unverzagt, V. V. Kulikov, H. J. Arends, A. B. Lazarev, A. Neiser, Alfred Švarc, F. Cividini, A. Braghieri, F. Afzal, D. G. Middleton, B. Oussena, C. Collicott, D. P. Watts, K. Spieker, K. Bantawa, M. Bashkanov, R. A. Miskimen, M. Ostrick, S. Kay, C. Sfienti, V. E. Tarasov, Patrick Achenbach, Yu. A. Usov, G. M. Huber, A. E. Kudryavtsev, A. Käser, O. Steffen, P. Aguar-Bartolomé, V. L. Kashevarov, A. G. Denig, E. J. Downie, N. K. Walford, J. Wettig, E. Mornacchi, A. Thiel, J. Stahov, S. Fegan, Durga Paudyal, J. C. McGeorge, Nicholas Zachariou, V. Sokhoyan, I. J. D. MacGregor, M. I. Ferretti Bondy, M. A. Martemianov, D. Gurevich, D. Hornidge, D. Ghosal, S. Wagner, M. Wolfes, Anthony W. Thomas, D. I. Glazier, Guy Ron, Z. Ahmed, Susanna Costanza, Michaela Thiel, W. J. Briscoe, A. Powell, M. Günther, L. Tiator, I. I. Strakovsky, A. N. Mushkarenkov, S. A. Bulychjov, D. M. Manley, Lena Heijkenskjöld, P. P. Martel, R. Omerović, M. Korolija, R. Beck, C. Mullen, J. R. M. Annand, D. Werthmüller, M. Biroth, M. Hadžimehmedović, P. B. Otte, A. B. Neganov, P. Pedroni, W. Gradl, S. N. Prakhov, B. Krusche, P. Drexler, H. Osmanović, T. Rostomyan, I. Supek, I. Gorodnov, Ron L. Workman, Roderick M. Macrae, S. Abt, C. S. Akondi, A. J. Sarty

Publikováno v: Physical Review C. 100

The γ n → π 0 n differential cross section evaluated for 27 energy bins span the photon-energy range 290–813 MeV ( W = 1.195 –1.553 GeV) and the pion c.m. polar production angles, ranging from 18 ∘ to 162 ∘ , making use of model-dependent

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::6d1b059748bafc732f76b9f43b571e12
https://doi.org/10.1103/physrevc.100.065205

Dynamical generation of resonances in the P33 partial wave

Autor: H. Osmanović, Simon Širca, Bojan Golli

Publikováno v: Physical Review

We investigate the formation of resonances in the P33 partial wave with the emphasis on possible emergence of dynamically generated quasi-bound states as a consequence of a strong $p$-wave pion attractive interaction in this partial wave, as well as

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::cb771856d3e0ea273f9c873dd89b8e67

Role of angle-dependent phase rotations of reaction amplitudes in η photoproduction on protons

Autor: K. Nikonov, R. Omerović, V. L. Kashevarov, J. Stahov, L. Tiator, H. Osmanović, M. Ostrick, M. Gorchteyn, M. Hadžimehmedović, Alfred Švarc

Publikováno v: Physical Review C. 98

It has recently been proven that the invariance of observables with respect to angle dependent phase rotations of reaction amplitudes mixes multipoles changing also their relative strength [1]. All contemporary partial wave analyses (PWA) in $\eta$ p

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::5eb2b3b6a8859067d3255f2e6e69564a
https://doi.org/10.1103/physrevc.98.045206

Fixed-t analyticity as a constraint in single- energy partial-wave analyses of meson photoproduction reactions

Autor: R. Omerović, V. L. Kashevarov, H. Osmanović, K. Nikonov, J. Stahov, M. Ostrick, Alfred Švarc, L. Tiator, M. Hadžimehmedović

Partial wave amplitudes of meson photoproduction reactions are an important source of information in baryon spectroscopy. We investigate a new approach in single-energy partial wave analyses of these reactions. Instead of using a constraint to theore

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::df6aac4653a9bf134317a45fb2ec3b3d
https://doi.org/10.1103/physrevc.97.015207

From Experimental Data to Pole Parameters in a Direct Way (Angle Dependent Continuum Ambiguity and Laurent + Pietarinen Expansion)

Autor: M. Hadžimehmedović, V. L. Kashevarov, M. Ostrick, Ron L. Workman, H. Osmanović, J. Stahov, K. Nikonov, Alfred Švarc, R. Omerović, Y. Wunderlich, Lothar Tiator

Unconstrained partial-wave amplitudes obtained at discrete energies from fits to complete sets of eight independent observables which are required to uniquely reconstruct reaction amplitudes do not vary smoothly with energy, and are in principle non-

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::c5582ee6604bd7cb63edc71c367b13eb
https://www.bib.irb.hr/951765