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    Wyświetlanie 1-9 z 9
    Tytuł:
    Kaonic atoms measurements at the DA$\Phi$NE Collider
    Autorzy:
    Shi, H.
    Niedźwiecki, Szymon
    Guaraldo, C.
    Baniahmad, A.
    Berucci, C.
    Miliucci, M.
    Silarski, Michał
    Skurzok, Magdalena
    Widmann, E.
    Sirghi, D.
    Ghio, F.
    Piscicchia, K.
    Bragadireanu, M.
    Zmeskal, J.
    Okada, S.
    Fabbietti, L.
    Scordo, A.
    Tatsuno, H.
    Martona, J.
    Bellotti, G.
    Iliescu, M.
    Curceanu, C.
    Cargnelli, M.
    Pietreanu, D.
    Iwasaki, M.
    Bazzi, M.
    Spallone, A.
    Bosnar, D.
    Moskal, Paweł
    Amirkhani, A.
    Sirghi, F.
    Fiorini, C.
    Opis:
    The DAFNE electron-positron collider of the Laboratori Nazionali di Frascati of INFN is a worldwide unique low-energy kaon source, which is being used to produce and to study kaonic atoms by the SIDDHARTA collaboration. The X-ray measurements of kaonic atoms play an important role for understanding the low-energy QCD in the strangeness sector. Significant achievements have been obtained by the SIDDHARTA experiment, among which: the most precise kaonic hydrogen measurement of the 1s level shift and width induced by the presence of the strong interaction; an upper limit of the X-ray yield for kaonic deuterium K-series; the accurate measurement of the 2p level shift and width of kaonic helium-4 and kaonic helium-3; yields of various light kaonic atoms transitions. Using the experience gained with SIDDHARTA experiment, the first kaonic deuterium measurement is in preparation in the framework of the SIDDHARTA-2 experiment with the goal to determine the antikaon-nucleon isospin dependent scattering lengths, which is possible only by combining the K-p and the upcoming K-d results. An overview of the experimental results of SIDDHARTA and an outlook to SIDDHARTA-2 experiments are given in this paper.
    Dostawca treści:
    Repozytorium Uniwersytetu Jagiellońskiego
    Inne
    Tytuł:
    Spectroscopy of kaonic atoms at DAFNE and J-PARC
    Autorzy:
    Sirghi, F.
    Ghio, F.
    Dawood Butt, A.
    Curceanu, C.
    Amirkhan, A.
    Iwasaki, M.
    Vazquez Doce, O.
    Sirghi, D.
    Piscicchia, K.
    Del Grande, R.
    Silarski, Michał
    Cargnelli, M.
    Fiorini, C.
    Levi Sandri, P.
    Niedźwiecki, Szymon
    Miliucci, M.
    Pietreanu, D.
    Tatsuno, H.
    Bellotti, G.
    Shi, H.
    Moskal, Paweł
    Spallone, A.
    Zmeskal, J.
    Okada, S.
    Bragadireanu, M.
    Skurzok, Magdalena
    Baniahmad, A.
    Bosnar, D.
    Iliescu, M.
    Berucci, C.
    Fabbietti, L.
    Guaraldo, C.
    Widmann, E.
    Marton, J.
    Bazzi, M.
    Opis:
    The interaction of antikaons (K^{-}) with nucleons and nuclei in the low-energy regime represents a very active research field in hadron physics. A unique and rather direct experimental access to the antikaon-nucleon scattering lengths is provided by precision X-ray spectroscopy of transitions in low-lying states in the lightest kaonic atoms (i.e. kaonic hydrogen and deuterium). In the SIDDHARTA experiment at the electron-positron collider DAFNE of LNFINFN we measured the most precise values of the strong interaction observables in conic hydrogen. The strong interaction on the 1s ground state of the electromagnetically bound K-p atom causes an energy shift and broadening of the 1s state. SIDDHARTA will extend the spectroscopy to kaonic deuterium to get access to the antikaon-neutron interaction and thus the isospin dependent scattering lengths. At J-PARC a kaon beam is used in a complementary experiment with a different setup for spectroscopy of kaonic deuterium atoms. The talk will give an overview of the of the upcoming experiments SIDDHARTA and the complementary experiment at J-PARC.Furthermore, the implications of the experiments for the theory of low-energy strong interaction with strangeness will be discussed.
    Dostawca treści:
    Repozytorium Uniwersytetu Jagiellońskiego
    Inne
    Tytuł:
    Kaonic deuterium precision measurement at DA$\Phi$NE : the SIDDHARTA-2 experiment
    Autorzy:
    Shi, H.
    Sirghi, F.
    Niedźwiecki, Szymon
    Guaraldo, C.
    Baniahmad, A.
    Berucci, C.
    Miliucci, M.
    Silarski, Michał
    Skurzok, Magdalena
    Widmann, E.
    Sirghi, D.
    Ghio, F.
    Piscicchia, K.
    Bragadireanu, M.
    De Paolis, L.
    Marton, J.
    Dawood Butt, A.
    Zmeskal, J.
    Okada, S.
    Fabbietti, L.
    Scordo, A.
    Tatsuno, H.
    Vazquez Doce, O.
    Bellotti, G.
    Iliescu, M.
    Curceanu, C.
    Levi Sandri, P.
    Cargnelli, M.
    Pietreanu, D.
    Iwasaki, M.
    Bazzi, M.
    Spallone, A.
    Bosnar, D.
    Moskal, Paweł
    Amirkhani, A.
    Del Grande, R.
    Fiorini, C.
    Wydawca:
    Springer
    Opis:
    Light kaonic atoms spectroscopy offers the unique opportunity to perform experiments equivalent to scattering at vanishing relative energies. This allows the determination of the antikaon-nucleus interaction at threshold, without the need of extrapolation to zero energy, as in the case of scattering experiments. In this framework, the SIDDHARTA-2 collaboration aims to perform the first measurement of kaonic deuterium transition to the fundamental level, which is mandatory to extract the isospin dependent antikaon—nucleon scattering lengths. The experiment will be carried out at the DA\Phi NE collider of LNF-INFN in 2019–2020.
    Dostawca treści:
    Repozytorium Uniwersytetu Jagiellońskiego
    Inne
    Tytuł:
    Measurement of the strong interaction induced shift and width of the 1s state of kaonic deuterium at J-PARC
    Autorzy:
    Piscicchia, K.
    Iio, M.
    Buehler, P.
    Fujioka, H.
    Iliescu, M.
    Noumi, H.
    Sekimoto, M.
    Iwasaki, M.
    Silarski, Michał
    Sada, Y.
    Shi, H.
    Guaraldo, C.
    Inoue, K.
    Suzuki, T.
    Lachner, J.
    Busso, L.
    Doce, O. Vazquez
    Toyoda, A.
    Sakuma, F.
    Okada, S.
    Scordo, A.
    Choi, S.
    Tanida, K.
    Enomoto, S.
    Pietreanu, D.
    Yamaga, T.
    Tsukada, K.
    Sirghi, F.
    Bosnar, D.
    Berucci, C.
    Widmann, E.
    Hayano, R. S.
    Sirghi, D.
    Ghio, F.
    D'Uffizi, A.
    Vidal, A. Romero
    Zmeskal, J.
    Ajimura, S.
    Iwai, M.
    Mizoi, Y.
    Sbardella, E.
    Bhang, H.
    Hashimoto, T.
    Zhang, Q.
    Nagae, T.
    Suzuki, S.
    Sato, M.
    Ohnishi, H.
    Tokuda, M.
    Ma, Y.
    Outa, H.
    Fiorini, C.
    Clozza, A.
    Matsuda, Y.
    Hiraiwa, T.
    Kawasaki, S.
    Bragadireanu, M.
    Morra, O.
    Marton, J.
    Lener, M. Poli
    Fabbietti, L.
    Golser, R.
    Tatsuno, H.
    Faso, D.
    Ishiwatari, T.
    Beer, G.
    Tucakovic, I.
    Curceanu, C.
    Cargnelli, M.
    Bazzi, M.
    Itahashi, K.
    Suzuki, K.
    Sandri, P. Levi
    Ishimoto, S.
    Sakaguchi, A.
    Yamazaki, T.
    Moskal, Paweł
    Opis:
    The antikaon–nucleon ($ \bar{K}N $) interaction close to threshold provides crucial information on the interplay between spontaneous and explicit chiral symmetry breaking in low-energy QCD. In this context, the importance of kaonic deuterium X-ray spectroscopy has been well recognized, but no experimental results have yet been obtained due to the difficulty of the measurement. We propose to measure the shift and width of the kaonic deuterium 1s state with an accuracy of 60 eV and 140 eV, respectively, at J-PARC. These results, together with the kaonic hydrogen data (KpX at KEK, DEAR and SIDDHARTA at DA$\Phi$NE), will then permit the determination of values of both the isospin I = 0 and I = 1 antikaon–nucleon scattering lengths and will provide the most stringent constraints on the antikaon–nucleon interaction, promising a breakthrough. Refined Monte Carlo studies were performed, including the investigation of background suppression factors for the described setup. These studies have demonstrated the feasibility of determining the shift and width of the kaonic deuterium atom 1s state with the desired accuracy of 60 eV and 140 eV.
    Dostawca treści:
    Repozytorium Uniwersytetu Jagiellońskiego
    Artykuł
      Wyświetlanie 1-9 z 9

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