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190 results on '"Ishiwatari T."'

1. Pionic hydrogen and deuterium

Author

Gotta D., Amaro F.D., Anagnostopoulos D.F., Bühler P., Covita D.S., Fuhrmann H., Gorke H., Gruber A., Hennebach M., Hirtl A., Ishiwatari T., Indelicato P., Jensen T.S., Le Bigot E.-O., Liu Y.-W., Manil B., Markushin V.E., Marton J., Nekipelov M., Pomerantsev V.N., Popov V.P., el Hassani A. J. Rusi, dos Santos J. M. F., Schlesser S., Schmid Ph., Simons L.M., Strauch Th., Theisen M., Trassinelli M., Veloso J. F. C. A., and Zmeskal J.

Subjects
Physics, QC1-999
Abstract

The strong-interaction effects both in pionic hydrogen and deuterium atoms have been re-determined with improved precision. The hadronic shift and width in pionic hydrogen together with the hadronic shift in pionic deuterium constitute a one-fold constraint for the two independent pion-nucleon scattering lengths. Furthermore, the hadronic width in pionic deuterium measures the transition strength of s-wave pions on an isoscalar nucleon-nucleon pair which is an independent quantity not related to the pion-nucleon scattering lengths. The experiment was performed at the Paul Scherrer Institute by stopping a high-intensity low-energy pion beam in gaseous targets using the cyclotron trap. The X-rays emitted by the πH and πD atoms were analysed with a high resolution Bragg spectrometer equipped with spherically bent crystals. The pion-nucleon scattering lengths and other physical quantities extracted from the atom data are in good agreement with the results obtained from pionnucleon and nucleon-nucleon scattering experiments and confirm that a consistent picture is achieved for the low-energy pion-nucleon sector with respect to the expectations of chiral perturbation theory.

Published
2022
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2. Future projects of light kaonic atom X-ray spectroscopy

Author

Tatsuno H., Bazzi M., Beer G., Bellotti G., Berucci C., Bragadireanu A.M., Bosnar D., Cargnelli M., Curceanu C., Butt A.D., d’Uffizi A., Fiorini C., Ghio F., Guaraldo C., Hayano R.S., Iliescu M., Ishiwatari T., Iwasaki M., Levi Sandri P., Marton J., Okada S., Pietreanu D., Piscicchia K., Romero Vidal A., Sbardella E., Scordo A., Shi H., Sirghi D.L., Sirghi F., Vazquez Doce O., Widmann E., and Zmeskal J.

Subjects
Physics, QC1-999
Abstract

X-ray spectroscopy of light kaonic atoms is a unique tool to provide precise information on the fundamental K̄N interaction at the low-energy limit and the in-medium nuclear interaction of K−. The future experiments of kaonic deuterium strong-interaction shift and width (SIDDHARTA-2 and J-PARC E57) can extract the isospin dependent K−N interaction at threshold. The high-resolution X-ray spectroscopy of kaonic helium with microcalorimeters (J-PARC E62) has the possibility to solve the long-standing potential-strength problem of the attractive K−-nucleus interaction. Here, the recent experimental results and the future projects of X-ray spectroscopy of light kaonic atoms are presented.

Published
2016
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3. Precision X-ray spectroscopy of kaonic atoms as a probe of low-energy kaon-nucleus interaction

Author

Shi H., Bazzi M., Beer G., Bellotti G., Berucci C., Bragadireanu A.M., Bosnar D., Cargnelli M., Curceanu C., Butt A.D., d’Uffizi A., Fiorini C., Ghio F., Guaraldo C., Hayano R.S., Iliescu M., Ishiwatari T., Iwasaki M., Levi Sandri P., Marton J., Okada S., Pietreanu D., Piscicchia K., Romero Vidal A., Sbardella E., Scordo A., Sirghi D.L., Sirghi F., Tatsuno H., Vazquez Doce O., Widmann E., and Zmeskal J.

Subjects
Physics, QC1-999
Abstract

In the exotic atoms where one atomic 1s electron is replaced by a K−, the strong interaction between the K− and the nucleus introduces an energy shift and broadening of the low-lying kaonic atomic levels which are determined by only the electromagnetic interaction. By performing X-ray spectroscopy for Z = 1,2 kaonic atoms, the SIDDHARTA experiment determined with high precision the shift and width for the 1s state of K− p and the 2p state of kaonic helium-3 and kaonic helium-4. These results provided unique information of the kaon-nucleus interaction in the low energy limit.

Published
2016
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4. Strong interaction studies with kaonic atoms

Author

Marton J., Bazzi M., Beer G., Berucci C., Bosnar D., Bragadireanu A.M., Cargnelli M., Clozza A., Curceanu C., d’Uffizi A., Fiorini C., Ghio F., Guaraldo C., Hayano R., Iliescu M., Ishiwatari T., Iwasaki M., Sandri P. Levi, Okada S., Pietreanu D., Piscicchia K., Ponta T., Quaglia R., Vidal A. Romero, Sbardella E., Scordo A., Shi H., Sirghi D.L., Sirghi F., Tatsuno H., Doce O. Vazquez, Widmann E., and Zmeskal J.

Subjects
Physics, QC1-999
Abstract

The strong interaction of antikaons (K−) with nucleons and nuclei in the low-energy regime represents an active research field connected intrinsically with few-body physics. There are important open questions like the question of antikaon nuclear bound states - the prototype system being K−pp. 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 of light kaonic atoms like kaonic hydrogen isotopes. In the SIDDHARTA experiment at the electron-positron collider DAΦNE of LNF-INFN we measured the most precise values of the strong interaction observables, i.e. the strong interaction on the 1s ground state of the electromagnetically bound K−p atom leading to a hadronic shift ϵ1s and a hadronic broadening Γ1s of the 1s state. The SIDDHARTA result triggered new theoretical work which achieved major progress in the understanding of the low-energy strong interaction with strangeness. Antikaon-nucleon scattering lengths have been calculated constrained by the SIDDHARTA data on kaonic hydrogen. For the extraction of the isospin-dependent scattering lengths a measurement of the hadronic shift and width of kaonic deuterium is necessary. Therefore, new X-ray studies with the focus on kaonic deuterium are in preparation (SIDDHARTA2). Many improvements in the experimental setup will allow to measure kaonic deuterium which is challenging due to the anticipated low X-ray yield. Especially important are the data on the X-ray yields of kaonic deuterium extracted from a exploratory experiment within SIDDHARTA.

Published
2016
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5. Low-energy kaon-nucleon/nuclei interaction studies at DAΦNE by AMADEUS

Author

Tucaković Ivana, Bazzi M., Berucci C., Bosnar D., Bragadireanu A.M., Cargnelli M., Clozza A., Curceanu C., D’Uffizi A., Fabbietti L., Fiorini C., Ghio F., Guaraldo C., Iliescu M., Ishiwatari T., Levi Sandri P., Marton J., Pietreanu D., Piscicchia K., Poli Lener M., Quaglia R., Sbardella E., Scordo A., Shi H., Sirghi D.L., Sirghi F., Tatsuno H., Doce O. Vazquez, Widmann E., and Zmeskal J.

Subjects
Physics, QC1-999
Abstract

The AMADEUS experiment deals with the investigation of the low-energy kaon-nuclei hadronic interaction at the DAΦNE collider at LNF-INFN, fundamental to respond to longstanding open questions in the non-perturbative QCD in the strangeness sector. One of the most interesting aspects is to understand how hadron masses and interactions change in the nuclear environment. The antikaon-nucleon potential is investigated searching for signals from possible bound kaonic clusters, which would imply a strongly attractive antikaon-nucleon potential. AMADEUS step 0 consists in the analysis of 2004/2005 KLOE data, exploring K− absorptions in H, 4He, 9Be and 12C present in setup materials. The status of the various preliminary analyses is presented, together with future perspectives.

Published
2015
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6. X-ray spectroscopy of kaonic atoms at SIDDHARTA

Author

Cargnelli M., Bazzi M., Beer G., Berucci C., Bragadireanu A.M., Curceanu C., d'Uffizi A., Fiorini C., Ghio F., Guaraldo C., Hayano R., Iliescu M., Ishiwatari T., Iwasaki M., Levi Sandri P., Marton J., Okada S., Pietreanu D., Ponta T., Quaglia R., Romero Vidal A., Sbardella E., Scordo A., Shi H., Sirghi D.L., Sirghi F., Tatsuno H, Vazquez Doce O, Widmann E, Wünschek B, and Zmeskal J

Subjects
Physics, QC1-999
Abstract

The X-ray measurements of kaonic atoms play an important role for understanding the low-energy QCD in the strangeness sector. The SIDDHARTA experiment studied the X-ray transitions of 4 light kaonic atoms (H, D, 3He, and 4He) using the DAFNE electron-positron collider at LNF (Italy). Most precise values of the shift and width of the kaonic hydrogen 1s state were determined, which have been now used as fundamental information for the low-energy K−p interaction in theoretical studies. An upper limit of the X-ray yield of kaonic deuterium was derived, important for future K−d experiments. The shifts and widths of the kaonic 3He and 4He 2p states were obtained, confirming the end of the “kaonic helium puzzle”. In this contribution also the plans for new experiments of kaonic deuterium are being presented.

Published
2014
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7. A search for the K−pp bound state in the 3He(K−in-flight, n) reaction at J-PARC

Author

Hashimoto T., Ajimura S., Beer G., Bhang H., Bragadireanu M., Buehler P., Busso L., Cargnelli M., Choi S., Curceanu C., Enomoto S., Faso D., Fujioka H., Fujiwara Y., Fukuda T., Guaraldo C., Hayano R. S., Hiraiwa T., Iio M., Iliescu M., Inoue K., Ishiguro Y., Ishikawa T., Ishimoto S., Ishiwatari T., Itahashi K., Iwai M., Iwasaki M., Kato Y., Kawasaki S., Kienle P., Kou H., Ma Y., Marton J., Matsuda Y., Mizoi Y., Morra O., Nagae T., Noumi H., Ohnishi H., Okada S., Outa H., Piscicchia K., Poli Lener M., Romero Vida A., Sada Y., Sakaguchi A., Sakuma F., Sato M., Scordo A., Sekimoto M., Shi H., Sirghi D., Sirghi F., Suzuki K., Suzuki S., Suzuki T., Tanida K., Tatsuno H., Tokuda M., Tomono D., Toyoda A., Tsukada K., Vazquez Doce O., Widmann E., Wuenschek B. K., Yamaga T., Yamazaki T., Yim H., Zhang Q., and Zmeska J.

Subjects
Physics, QC1-999
Abstract

We have collected the first physics data of an experimental search for the simplest kaonic nuclear bound state, “K− pp”, by the 3He(K− n) reaction at J-PARC. We confirmed that our spectrometer system works as designed and observed clear peak structure composed of the quasi-elastic K−“n” → K−n and the charge-exchange K−“p” → ¯̅K0n reactions in the forward neutron spectrum.

Published
2014
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8. The yield of kaonic hydrogen X-rays in the SIDDHARTA experiment

Author

Shi H., Bazzi M., Beer G., Berucci C., Bragadireanu A.M., Cargnelli M., Curceanu C., d’Uffizi A., Fiorini C., Ghio F., Guaraldo C., Hayano R.S., Iliescu M., Ishiwatari T., Iwasaki M., Kienle P., Levi Sandri P., Marton J., Okada S., Pietreanu D., Piscicchia K., Ponta T., Quaglia R., Romero Vidal A., Sbardella E., Scordo A., Sirghi D.L., Sirghi F., Tatsuno H., Vazquez Doce O., Widmann E., and Zmeskal J.

Subjects
Physics, QC1-999
Abstract

We measured K-series kaonic hydrogen X-rays in the SIDDHARTA experiment performed at the DAΦNE electron-positron collider of Laboratori Nazionali di Frascati. With a gaseous hydrogen target of density 15 ρSTP, preliminary values of the absolute yields, defined as the number of atomic X-rays emitted per kaon stopped inside the target, were determined to be 0.012−0.004+0.003 for Kα transition and 0.045−0.012+0.009 for Ktot, the summation of all the emitted K-series transitions.

Published
2014
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9. New precision era of experiments on strong interaction with strangeness at DAFNE/LNF-INFN

Author

Ishiwatari T., Bazzi M., Beer G., Berucci C., Bombelli L., Bragadireanu A.M., Cargnelli M., Curceanu C., d’Uffizi A., Fiorini C., Ghio F., Guaraldo C., Hayano R.S., Iliescu M., Iwasaki M., Kienle P., Levi Sandri P., Longoni A., Marton J., Okada S., Pietreanu D., Ponta T., Quaglia R., Romero Vidal A., Sbardella E., Scordo A., Shi H., Sirghi D.L., Sirghi F., Tatsuno H., Tudorache A., Tudorache V., Vazquez Doce O., Wünschek B., Widmann E., and Zmeskal J.

Subjects
Physics, QC1-999
Abstract

The strong-interaction shifts and widths of kaonic hydrogen, deuterium, 3He, and 4He were measured in the SIDDHARTA experiment. The most precise values of the shift and width of the kaonic hydrogen 1s state were determined to be ϵ1s = −283 ± 36(stat)±6(syst) eV and Γ1s = 541±89(stat)±22(syst) eV. The upper limit of the kaonic deuterium Kα yield was found to be ≤ 0.39%. In addition, the shifts and widths of the kaonic 3He and 4He 2p states were determined to be ϵ2p(3He) = −2 ± 2(stat) ± 4(syst) eV and Γ2p(3He) = 6 ± 6(stat) ± 7(syst) eV; ϵ2p(4He) = +5 ± 3(stat) ± 4(syst) eV and Γ2p(4He) = 14 ± 8(stat) ± 5(syst) eV. These values are important for the constraints of the low-energy K¯N$\bar KN$ interaction in theoretical approaches.

Published
2014
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10. Unveiling the strangeness secrets: low-energy kaon-nucleon/nuclei interactions studies at DAΦNE

Author

Curceanu C., Bazzi M., Beer G., Berucci C., Bosnar D., Bragadireanu A.M., Cargnelli M., Clozza A., D’Uffizi A., Fabbietti L., Fiorini C., Ghio F., Guaraldo C., Hayano R.S., Iliescu M., Ishiwatari T., Iwasaki M., Levi Sandri P., Marton J., Okada S., Pietreanu D., Piscicchia K., Poli Lener M., Ponta T., Quaglia R., Romero Vidal A., Sbardella E., Scordo A., Shi H., Sirghi D.L., Sirghi F., Tatsuno H., Tucaković I., Vazquez Doce O., Widmann E., and Zmeskal J.

Subjects
Physics, QC1-999
Abstract

The DAΦNE electron-positron collider at the Laboratori Nazionali di Frascati of INFN, Italy has made available a unique quality low-energy negatively charged kaons “beam”, which is used to unveil the secrets of the kaon-nucleon/nuclei interactions at low energies by the SIDDHARTA-2 and AMADEUS experiments. SIDDHARTA has already performed unprecedented precision measurements of kaonic atoms, and is being presently upgraded, as SIDDHARTA-2, to approach new frontiers. The AMADEUS experiment plans to perform in the coming years precision measurements on kaon-nuclei interactions at low-energies, to study the possible formation of kaonic nuclei, of the Λ(1405) and of many other processes involving strangeness.

Published
2014
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11. Search for the K−pp bound state via the in-flight 3He(K−, n) reaction

Author

Sada Y., Ajimura S., Beer G., Bhang H., Bragadireanu M., Buehler P., Busso L., Cargnelli M., Choi S., Curceanu C., Enomoto S., Faso D., Fujioka H., Fujiwara Y., Fukuda T., Guaraldo C., Hashimoto T., Hayano R. S., Hiraiwa T., Iio M., Iliescu M., Inoue K., Ishiguro Y., Ishikawa T., Ishimoto S., Ishiwatari T., Itahashi K., Iwai M., Iwasaki M., Kato Y., Kawasaki S., Kienle P., Kou H., Ma Y., Marton J., Matsuda Y., Mizoi Y., Morra O., Nagae T., Noumi H., Ohnishi H., Okada S., Outa H., Piscicchia K., Poli Lener M., Romero Vidal A., Sakaguchi A., Sakuma F., Sato M., Scordo A., Sekimoto M., Shi H., Sirghi D., Sirghi F., Suzuki K., Suzuki S., Suzuki T., Tanida K., Tatsuno H., Tokuda M., Tomono D., Toyoda A., Tsukada K., Vazquez Doce O., Widmann E., Weunschek B. K., Yamaga T., Yamazaki T., Yim H., Zhang Q., and Zmeskal J.

Subjects
Physics, QC1-999
Abstract

In the J-PARC E15 experiment, a K− pp search was performed via the 3He(K−, n) reaction at 1.0 GeV/c. A forward-going neutron is detected by a neutron counter with 15 m flight length, and decay particles from K− pp are simultaneously measured by a cylindrical detector system that surrounds a liquid 3He target system. In March and May, 2013, we carried out the first physics data-taking with 5×109 incident kaons on the 3He target, and we have obtained a preliminary exclusive analysis result of 3He(K−, Λp)n reaction.

Published
2014
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12. Investigation of the low energy kaons hadronic interactions in light nuclei by AMADEUS

Author

Piscicchia K., Bazzi M., Berucci C., Bosnar D., Bragadireanu A.M., Cargnelli M., Clozza A., D’Uffizi A., Fabietti L., Fiorini C., Ghio F., Guaraldo C., Iliescu M., Ishiwatari T., Levi Sandri P., Marton J., Pietreanu D., Poli Lener M., Quaglia R., Sbardella E., Scordo A., Shi H., Sirghi D.L., Sirghi F., Tatsuno H., Tucaković I., Vazquez Doce O., Widmann E., and Zmeskal J.

Subjects
Physics, QC1-999
Abstract

The AMADEUS experiment has the aim to perform studies of the low energy hadronic interactions of negatively charged kaons with nucleons and nuclei, which are fundamental to solve longstanding open questions in the non-perturbative QCD in the strangeness sector. The DAΦNE collider provides a unique source of monochromatic low-momentum kaons, whose nuclear interaction with the materials of the KLOE detector (used as an active target) provide us excellent acceptance and resolution data for K− capture on H, 4He, 9Be and 12C, both at-rest and in-flight. AMADEUS step 0 consisted in the analysis of the 2004-2005 KLOE data. A second step consisted in the implementation in the central region of the KLOE detector of a pure graphite target, providing a high statistic sample of K− 12C nuclear captures at rest. For the future, new setups for various dedicated targets are under preparation. The aim of such investigations is to face the major open questions in hadron nuclear physics in the strangeness sector, such as the nature of the Λ(1405) state and the resonant versus non-resonant yield in nuclear K− capture, the possible existence of kaonic nuclear clusters, strongly related to a quantitative understanding of single versus multi-nucleon K− absorption.

Published
2014
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13. Kaonic atoms – studies of the strong interaction with strangeness

Author

Marton J., Bazzi M., Beer G., Berucci C., Bragadireanu A.M., Cargnelli M., Curceanu C., d’Uffizi A., Fiorini C., Ghio F., Guaraldo C., Hayano R., Iliescu M., Ishiwatari T., Iwasaki M., Levi Sandri P., Okada S., Pietreanu D., Ponta T., Quaglia R., Romero Vidal A., Sbardella E., Scordo A., Shi H., Sirghi D.L., Sirghi F., Tatsuno H., Vazquez Doce O., Widmann E., Wünschek B., and Zmeskal J.

Subjects
Physics, QC1-999
Abstract

The strong interaction of charged antikaons (K−) with nucleons and nuclei in the low-energy regime is a fascinating topic. The antikaon plays a peculiar role in hadron physics due to the strong attraction antikaon-nucleon which is a key question for possible kaonic nuclear bound states. A rather direct experimental access to the antikaon-nucleon scattering lengths is provided by precision X-ray spectroscopy of transitions to low-lying states in light kaonic atoms like kaonic hydrogen and deuterium. After the successful completion of precision measurements on kaonic hydrogen and helium isotopes by SIDDHARTA at DAΦNE/LNF, new X-ray studies with the focus on kaonic deuterium are in preparation (SIDDHARTA2). In the future with kaonic deuterium data the antikaon-nucleon isospin-dependent scattering lengths can be extracted for the first time. An overview of the experimental results of SIDDHARTA and an outlook to future perspectives in the SIDDHARTA2 experiments in this frontier research field will be given.

Published
2014
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14. Kaon-nuclei interaction studies at low energies (the AMADEUS project)

Author

Scordo A., Sbardella E., Romero Vidal A., Rizzo A., Poli Lener M., Pietreanu D., Marton J., Levi Sandri P., Ishiwatari T., Kienle P., Iliescu M., Guaraldo C., Ghio F., D’Uffizi A., Curceanu C., Clozza A., Cargnelli M., Bragadireanu A. M., Berucci C., Bosnar D., Bazzi M., Piscicchia Kristian, Sirghi D.L., Sirghi F., Tatsuno H., Tucakovic I., Vazquez Doce O., Widmann E., and Zmeskal J.

Subjects
Physics, QC1-999
Abstract

The AMADEUS experiment aims to perform dedicated precision studies in the sector of low-energy kaon-nuclei interaction at the DAΦNE collider at LNF-INFN. In particular, the experiment plans to perform measurements of the debated deeply bound kaonic nuclear states, to deepen our knowledge about the controversial state Λ(1405) and to measure the low energy cross section of K− on light nuclei. AMADEUS will exploit the process of stopped kaons in cryogenic gaseous targets, measuring both charged and neutral particles produced in a 4π geometry, so performing a full study of the various interaction channels. Taking advantage of the fact that the KLOE drift chamber is mainly filled with 4He (90% helium 10% isobutane) according to Monte Carlo simulations about 0.1% of kaons from DAΦNE should stop in the inner volume of the drift chamber; the analysis of the existing KLOE data (run from 2002 to 2005) is presently going on, searching for hadronic interactions of K− in such an active target. The AMADEUS physics program and preliminary results from the analysis of KLOE data will be discussed.

Published
2012
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15. Kaonic 3He and 4He measurements in the SIDDHARTA experiment at the DAΦNE collider

Author

Scordo A., Sbardella E., Romero Vidal A., Rizzo A., Ponta T., Pietreanu D., Okada S., Marton J., Longoni A., Levi Sandri P., Kienle P., Iwasaki M., Iliescu M., Ishiwatari T., Hayano R.S., Guaraldo C., Ghio F., Frizzi T., Fiorini C., d’Uffizi A., Curceanu (Petrascu) C., Cargnelli M., Bragadireanu A.M., Bombelli L., Beer G., Bazzi M., Tatsuno H., Shi H., Sirghi D.L., Sirghi F., Tudorache A., Tudorache V., Vazquez Doce O., Widmann E., Wünschek B., and Zmeskal J.

Subjects
Physics, QC1-999
Abstract

The SIDDHARTA collaboration measured kaonic 3He and 4He 3d → 2p X-rays with gaseous targets at the DAΦNE e+e− collider. The 2p-state strong-interaction shifts and widths were precisely determined by using 144 high-resolution silicon drift detectors. The shift of K−4He is in good agreement with theoretical calculations and consistent with the recent experimental result of KEK-PS E570. The shift of K−3He is also determined for the first time. The newly determined widths are in agreement with optical model calculations.

Published
2012
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16. Low energy kaon nuclei interaction studies at DAΦNE

Author

Okada S., Suzuki K., Mullner P., Marton J., Levi Sandri P., Kienle P., Ishiwatari T., Iliescu M., Guaraldo C., Ghio F., Curceanu C., Cargnelli M., Buhler P., Bragadireanu M., Bazzi M., Zmeskal J., Vazquez Doce O., Pietreanu D., Poli Lener M., Rizzo A., Romero Vidal A., Scordo A., Sirghi D., d’Ufizzi A., Widmann E., and Wunschek B.

Subjects
Physics, QC1-999
Abstract

A preliminar study of these kind of hadronic interactions is being done by the AMADEUS collaboration by analyzing the existent KLOE data.

Published
2010
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17. Precision Spectroscopy of Kaonic Helium-3 Atoms X-rays at J-PARC

Author

Tanida K., Suzuki T., Sirghi F., Sirghi D., Shi H., Sekimoto M., Sato M., Sakuma F., Outa H., Okada S., Ohnishi H., Noumi H., Matsuda Y., Marton J., Kienle P., Kou H., Iwasaki M., Itahashi K., Ishiwatari T., Ishimoto S., Hiraiwa T., Hayano R.S., Hashimoto T., Guaraldo C., Fujiwara Y., Fujioka H., Enomoto S., Doce O.V., Curceanu C., Choi S., Cargnelli M., Bhang H., Iio M., Tatsuno H., Tokuda M., Tomono D., Toyoda A., Tsukada K., Vidal A.R., Widmann E., Wunschek B., Yamazaki T., and Zmeskal J.

Subjects
Physics, QC1-999
Abstract

We will measure the Balmer-series x-rays of kaonic-3He atoms using large-area high-resolution silicon drift x-rays detectors in order to provide the crucial information of K−-nucleus strong interaction at the low energy limit. The strong interaction 2p level shift will be determined with a precision of a few eV. At the present status, the construction of all detectors is in progress. In February, 2009, the first tuning of K1.8BR beamline was performed by the secondary beam generated in J-PARC hadron facility. The data taking will be started soon.

Published
2010
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18. A search for deeply-bound kaonic nuclear states at J-PARC

Author

Sakaguchi A., Sada Y., Pietreanu D., Outa H., Okada S., Ohnishi H., Noumi H., Nagae T., Morra O., Mizoi Y., Matsuda Y., Marton J., Kienle P., Kou H., Iwasaki M., Iwai M., Itahashi K., Ishiwatari T., Ishimoto S., Ishikawa T., Inoue K., Iliescu M., Iio M., Hiraiwa T., Hayano R.S., Hashimoto T., Guaraldo C., Fukuda Y., Fukuda T., Fujiwara Y., Faso D., Fujioka H., Enomoto S., Curceanu C., Choi S., Cargnelli M., Busso L., Buehler P., Bragadireanu M., Bhang H., Beer G., Ajimura S., Sakuma F., Sato M., Sekimoto M., Sirghi D., Sirghi F., Suzuki K., Suzuki S., Suzuki T., Tatsuno H., Tokuda M., Tomono D., Toyoda A., Tsukada K., Widmann E., Yamazaki T., Yim H., and Zmeskal J.

Subjects
Physics, QC1-999
Abstract

The J-PARC E15 experiment will be performed to search for the simplest kaonic nuclear bound state, K− pp, by the in-flight 3He(K−,n) reaction. The exclusive measurement can be performed by a simultaneous measurement of the missing mass using the primary neutron and the invariant mass via the expected decay, K− pp → Λp → pπ− p. In this report, an overview of the experiment and the preparation status are presented.

Published
2010
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19. Precision Spectroscopy of Kaonic Atoms at DAΦNE

Author

Scordo A., Romero Vidal A., Rizzo A., Ponta T., Pietreanu D., Marton J., Lucherini V., Longoni A., Levi Sandri P., Kienle P., Iwasaki M., Ishiwatari T., Iliescu M., Hayano R.S., Guaraldo C., Girolami B., Ghio F., Frizzi T., Fiorini C., d’Uffizi A., Curceanu (Petrascu) C., Corradi G., Cargnelli M., Bragadireanu A.M., Bombelli L., Beer G., Bazzi M., Okada S., Shi H., Sirghi D.L., Sirghi F., Tatsuno H., Tudorache A., Tudorache V., Vazquez Doce O., Widmann E., and Zmeskal J.

Subjects
Physics, QC1-999
Abstract

The SIDDHARTA experiment aims at a precise measurement of K -series kaonic hydrogen x-rays and the first-ever measurement of the kaonic deuterium x-rays to determine the strong-interaction energy-level shift and width of the lowest lying atomic states. These measurements offer a unique possibility to precisely determine the isospin-dependent $ar{K}$-nucleon scattering lengths.

Published
2010
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20. K-series X-ray yield measurement of kaonic hydrogen atoms in a gaseous target

Author

Bazzi, M., Beer, G., Bellotti, G., Berucci, C., Bragadireanu, A.M., Bosnar, D., Cargnelli, M., Curceanu, C., Butt, A.D., d'Uffizi, A., Fiorini, C., Ghio, F., Guaraldo, C., Hayano, R.S., Iliescu, M., Ishiwatari, T., Iwasaki, M., Levi Sandri, P., Marton, J., Okada, S., Pietreanu, D., Piscicchia, K., Romero Vidal, A., Sbardella, E., Scordo, A., Shi, H., Sirghi, D.L., Sirghi, F., Tatsuno, H., Vazquez Doce, O., Widmann, E., and Zmeskal, J.

Published
2016
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21. Testing the Pauli Exclusion Principle for Electrons at LNGS

Author

Shi, H., Bartalucci, S., Bertolucci, S., Berucci, C., Bragadireanu, A.M., Cargnelli, M., Clozza, A., Curceanu, C., De Paolis, L., Di Matteo, S., d’Uffizi, A., Egger, J.-P., Guaraldo, C., Iliescu, M., Ishiwatari, T., Marton, J., Laubenstein, M., Milotti, E., Pietreanu, D., Piscicchia, K., Ponta, T., Vidal, A. Romero, Sbardella, E., Scordo, A., Sirghi, D.L., Sirghi, F., Sperandio, L., Doce, O. Vazquez, Widmann, E., and Zmeskal, J.

Published
2015
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22. X-ray transition yields of low-Z kaonic atoms produced in Kapton

Author

Bazzi, M., Beer, G., Berucci, C., Bombelli, L., Bragadireanu, A.M., Cargnelli, M., Curceanu, C., dʼUffizi, A., Fiorini, C., Ghio, F., Guaraldo, C., Hayano, R.S., Iliescu, M., Ishiwatari, T., Iwasaki, M., Kienle, P., Levi Sandri, P., Longoni, A., Marton, J., Okada, S., Pietreanu, D., Ponta, T., Quaglia, R., Romero Vidal, A., Sbardella, E., Scordo, A., Shi, H., Sirghi, D.L., Sirghi, F., Tatsuno, H., Tudorache, A., Tudorache, V., Vazquez Doce, O., Widmann, E., and Zmeskal, J.

Published
2013
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23. Spontaneously Emitted X-rays: An Experimental Signature of the Dynamical Reduction Models

Author

Curceanu, C., Bartalucci, S., Bassi, A., Bazzi, M., Bertolucci, S., Berucci, C., Bragadireanu, A. M., Cargnelli, M., Clozza, A., De Paolis, L., Di Matteo, S., Donadi, S., D’Uffizi, A., Egger, J.-P., Guaraldo, C., Iliescu, M., Ishiwatari, T., Laubenstein, M., Marton, J., Milotti, E., Pichler, A., Pietreanu, D., Piscicchia, K., Ponta, T., Sbardella, E., Scordo, A., Shi, H., Sirghi, D. L., Sirghi, F., Sperandio, L., Vazquez Doce, O., and Zmeskal, J.

Published
2016
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24. A search for deeply-bound kaonic nuclear state at the J-PARC E15 experiment

Author

Ajimura, S., Beer, G., Bhang, H., Bragadireanu, M., Buehler, P., Busso, L., Cargnelli, M., Choi, S., Curceanu, C., Enomoto, S., Faso, D., Fujioka, H., Fujiwara, Y., Fukuda, T., Guaraldo, C., Hashimoto, T., Hayano, R.S., Hiraiwa, T., Iio, M., Iliescu, M., Inoue, K., Ishiguro, Y., Ishikawa, T., Ishimoto, S., Ishiwatari, T., Itahashi, K., Iwai, M., Iwasaki, M., Kawasaki, S., Kienle, P., Kou, H., Ma, Y., Marton, J., Matsuda, Y., Mizoi, Y., Morra, O., Nagae, T., Noumi, H., Ohnishi, H., Okada, S., Outa, H., Piscicchia, K., Poli Lener, M., Romero Vidal, A., Sada, Y., Sakaguchi, A., Sakuma, F., Sato, M., Scordo, A., Sekimoto, M., Shi, H., Sirghi, D., Sirghi, F., Suzuki, K., Suzuki, S., Suzuki, T., Tatsuno, H., Tokuda, M., Tomono, D., Toyoda, A., Tsukada, K., Vazquez Doce, O., Widmann, E., Yamazaki, T., Yim, H., and Zmeskal, J.

Published
2013
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25. Unlocking the secrets of the kaon–nucleon/nuclei interactions at low-energies: The SIDDHARTA(-2) and the AMADEUS experiments at the DAΦNE collider

Author

Curceanu, C., Bazzi, M., Beer, G., Berucci, C., Bombelli, L., Bragadireanu, A.M., Cargnelli, M., Clozza, A., dʼUffizi, A., Fiorini, C., Frizzi, T., Ghio, F., Guaraldo, C., Hayano, R.S., Iliescu, M., Ishiwatari, T., Iwasaki, M., Kienle, P., Levi Sandri, P., Longoni, A., Marton, J., Okada, S., Pietreanu, D., Piscicchia, K., Poli Lener, M., Ponta, T., Romero Vidal, A., Sbardella, E., Scordo, A., Shi, H., Sirghi, D.L., Sirghi, F., Tatsuno, H., Tudorache, A., Tudorache, V., Vazquez Doce, O., Widmann, E., Wünschek, B., and Zmeskal, J.

Published
2013
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26. Strong-interaction shifts and widths of kaonic helium isotopes

Author

Ishiwatari, T., Bazzi, M., Beer, G., Bombelli, L., Bragadireanu, A.M., Cargnelli, M., Curceanu (Petrascu), C., dʼUffizi, A., Fiorini, C., Frizzi, T., Ghio, F., Guaraldo, C., Hayano, R.S., Iliescu, M., Iwasaki, M., Kienle, P., Levi Sandri, P., Longoni, A., Marton, J., Okada, S., Pietreanu, D., Ponta, T., Rizzo, A., Romero Vidal, A., Sbardella, E., Scordo, A., Shi, H., Sirghi, D.L., Sirghi, F., Tatsuno, H., Tudorache, A., Tudorache, V., Vazquez Doce, O., Widmann, E., Wünschek, B., and Zmeskal, J.

Published
2013
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27. Preliminary study of kaonic deuterium X-rays by the SIDDHARTA experiment at DAΦNE

Author

Bazzi, M., Beer, G., Berucci, C., Bombelli, L., Bragadireanu, A.M., Cargnelli, M., Curceanu (Petrascu), C., dʼUffizi, A., Fiorini, C., Frizzi, T., Ghio, F., Guaraldo, C., Hayano, R., Iliescu, M., Ishiwatari, T., Iwasaki, M., Kienle, P., Levi Sandri, P., Longoni, A., Marton, J., Okada, S., Pietreanu, D., Ponta, T., Romero Vidal, A., Sbardella, E., Scordo, A., Shi, H., Sirghi, D.L., Sirghi, F., Tatsuno, H., Tudorache, A., Tudorache, V., Vazquez Doce, O., Widmann, E., and Zmeskal, J.

Published
2013
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28. Pionic hydrogen and friends

Author

Gotta, D., Amaro, F. D., Anagnostopoulos, D. F., Bühler, P., Gorke, H., Covita, D. S., Fuhrmann, H., Gruber, A., Hennebach, M., Hirtl, A., Ishiwatari, T., Indelicato, P., Jensen, T. S., Bigot, E.-O. Le, Markushin, V. E., Marton, J., Nekipelov, M., Pomerantsev, V. N., Popov, V. P., dos Santos, J. M. F., Schlesser, S., Schmid, Ph., Simons, L. M., Strauch, Th., Theisen, M., Trassinelli, M., Veloso, J. F. C. A., and Zmeskal, J.

Published
2015
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29. VIP 2: experimental tests of the pauli exclusion principle for electrons

Author

Pichler, A., Bartalucci, S., Bertolucci, S., Berucci, C., Bragadireanu, M., Cargnelli, M., Clozza, A., Curceanu, C., Paolis, L. De, Matteo, S. Di, D’Uffizi, A., Egger, J.-P., Guaraldo, C., Iliescu, M., Ishiwatari, T., Laubenstein, M., Marton, J., Milotti, E., Pietreanu, D., Piscicchia, K., Ponta, T., Sbardella, E., Scordo, A., Shi, H., Sirghi, D., Sirghi, F., Sperandio, L., Vazquez-Doce, O., Widmann, E., and Zmeskal, J.

Published
2015
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30. Kaonic hydrogen X-ray measurement in SIDDHARTA

Author

Bazzi, M., Beer, G., Bombelli, L., Bragadireanu, A.M., Cargnelli, M., Corradi, G., Curceanu (Petrascu), C., dʼUffizi, A., Fiorini, C., Frizzi, T., Ghio, F., Guaraldo, C., Hayano, R.S., Iliescu, M., Ishiwatari, T., Iwasaki, M., Kienle, P., Levi Sandri, P., Longoni, A., Lucherini, V., Marton, J., Okada, S., Pietreanu, D., Ponta, T., Rizzo, A., Romero Vidal, A., Scordo, A., Shi, H., Sirghi, D.L., Sirghi, F., Tatsuno, H., Tudorache, A., Tudorache, V., Vazquez Doce, O., Widmann, E., and Zmeskal, J.

Published
2012
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31. Performance of silicon-drift detectors in kaonic atom X-ray measurements

Author

Bazzi, M., Beer, G., Bombelli, L., Bragadireanu, A.M., Cargnelli, M., Corradi, G., Curceanu (Petrascu), C., d’Uffizi, A., Fiorini, C., Frizzi, T., Ghio, F., Girolami, B., Guaraldo, C., Hayano, R.S., Iliescu, M., Ishiwatari, T., Iwasaki, M., Kienle, P., Levi Sandri, P., Longoni, A., Lucherini, V., Marton, J., Okada, S., Pietreanu, D., Ponta, T., Rizzo, A., Romero Vidal, A., Scordo, A., Shi, H., Sirghi, D.L., Sirghi, F., Tatsuno, H., Tudorache, A., Tudorache, V., Vazquez Doce, O., Widmann, E., and Zmeskal, J.

Published
2011
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32. The AMADEUS experiment – precision measurements of low-energy antikaon nucleus/nucleon interactions

Author

Zmeskal, J., Bazzi, M., Bragadireanu, M., Bühler, P., Cargnelli, M., Curceanu, C., Ghio, F., Guaraldo, C., Iliescu, M., Ishiwatari, T., Kienle, P., Levi Sandri, P., Marton, J., Müllner, P., Suzuki, K., Okada, S., Pietreanu, D., Poli Lener, M., Rizzo, A., Vazquez Doce, O., Romero Vidal, A., Scordo, A., Sirghi, F., Sirghi, D., d'Ufizzi, A., Widmann, E., and Wünschek, B.

Published
2010
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33. Kaonic atoms studies at DAFNE by the SIDDHARTA experiment

Author

Cargnelli, M., Bazzi, M., Beer, G., Bombelli, L., Bragadireanu, A.M., Curceanu Petrascu, C., Fiorini, C., Frizzi, T., Ghio, F., Girolami, B., Guaraldo, C., Hayano, R., Iliescu, M., Ishiwatari, T., Iwasaki, M., Kienle, P., Lechner, P., Levi Sandri, P., Longoni, A., Lucherini, V., Marton, J., Okada, S., Pietreanu, D., Ponta, T., Romero Vidal, A., Scordo, A., Shi, H.-X., Sirghi, D.L., Sirghi, F., Soltau, H., Strüder, L., Tatsuno, H., Vazquez Doce, O., Widmann, E., and Zmeskal, J.

Published
2010
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35. Kaon-Nucleon Strong Interaction in Kaonic Atoms: The SIDDHARTA Program

Author

Iliescu, M., Bazzi, M., Beer, G., Bombelli, L., Bragadireanu, A. M., Cargnelli, M., Curceanu (Petrascu), C., d’Uffizi, A., Fiorini, C., Frizzi, T., Ghio, F., Guaraldo, C., Hayano, R. S., Ishiwatari, T., Iwasaki, M., Kienle, P., Levi Sandri, P., Longoni, A., Marton, J., Okada, S., Pietreanu, D., Ponta, T., Rizzo, A., Romero Vidal, A., Sbardella, E., Scordo, A., Shi, H., Sirghi, D. L., Sirghi, F., Tatsuno, H., Tudorache, A., Tudorache, V., Vazquez Doce, O., Widmann, E., Wünschek, B., and Zmeskal (SIDDHARTA Collaboration), J.

Published
2013
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36. A Search for Deeply Bound Kaonic Nuclear States at J-PARC

Author

Ajimura, S., Beer, G., Bhang, H., Bragadireanu, M., Buehler, P., Busso, L., Cargnelli, M., Choi, S., Curceanu, C., Enomoto, S., Faso, D., Fujioka, H., Fujiwara, Y., Fukuda, T., Guaraldo, C., Hashimoto, T., Hayano, R. S., Hiraiwa, T., Iio, M., Iliescu, M., Inoue, K., Ishiguro, Y., Ishikawa, T., Ishimoto, S., Ishiwatari, T., Itahashi, K., Iwai, M., Iwasaki, M., Kawasaki, S., Kienle, P., Kou, H., Ma, Y., Marton, J., Matsuda, Y., Mizoi, Y., Morra, O., Nagae, T., Noumi, H., Ohnishi, H., Okada, S., Outa, H., Piscicchia, K., Lener, M. Poli, Vidal, A. Romero, Sada, Y., Sakaguchi, A., Sakuma, F., Sato, M., Scordo, A., Sekimoto, M., Shi, H., Sirghi, D., Sirghi, F., Suzuki, K., Suzuki, S., Suzuki, T., Tatsuno, H., Tokuda, M., Tomono, D., Toyoda, A., Tsukada, K., Doce, O. Vazquez, Widmann, E., Yamazaki, T., Yim, H., and Zmeskal, J.

Published
2013
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37. A search for ϕ meson nucleus bound state using antiproton annihilation on nucleus

Author

Ohnishi, H., Bühler, P., Cargnelli, M., Curceanu, C., Guaraldo, C., Hartmann, O., Hicks, K., Iwasaki, M., Ishiwatari, T., Kienle, P., Marton, J., Muto, R., Naruki, M., Niiyama, M., Noumi, H., Okada, S., Vidal, A. Romero, Sakaguchi, A., Sakuma, F., Sawada, S., Sirghi, D., Sirghi, F., Suzuki, K., Tsukada, K., Doce, O. Vazquez, Widmann, E., Yokkaichi, S., and Zmeskal, J.

Published
2012
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38. Studies of the ${\boldsymbol{\bar{K}}}\boldsymbol{N}$ interaction at DAΦNE

Author

Vázquez Doce, O., Bazzi, M., Berucci, C., Bombelli, L., Bragadireanu, A. M., Cargnelli, M., Clozza, A., Curceanu (Petrascu), C., d’Uffizi, A., Fiorini, C., Ghio, F., Guaraldo, C., Iliescu, M., Ishiwatari, T., Sandri, P. Levi, Longoni, A., Marton, J., Okada, S., Pietreanu, D., Piscicchia, K., Poli Lener, M., Ponta, T., Rizzo, A., Romero Vidal, A., Sbardella, E., Scordo, A., Shi, H., Sirghi, D. L., Sirghi, F., Tatsuno, H., Widmann, E., and Zmeskal, J.

Published
2012
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39. Results from the kaonic hydrogen X-ray measurement at DAFNE and outlook to future experiments

Author

Cargnelli, Michael, Bazzi, M., Beer, G., Berucci, C., Bombelli, L., Bragadireanu, A. M., Clozza, A., Corradi, G., Curceanu (Petrascu), C., d’Uffizi, A., Fiorini, C., Ghio, F., Girolami, B., Guaraldo, C., Hayano, R. S., Iliescu, M., Ishiwatari, T., Iwasaki, M., Kienle, P., Levi Sandri, P., Lucherini, V., Marton, J., Okada, S., Pietreanu, D., Piscicchia, K., Poli Lener, M., Ponta, T., Quaglia, R., Rizzo, A., Romero Vidal, A., Sbardella, E., Scordo, A., Shi, H., Sirghi, D. L., Sirghi, F., Tatsuno, H., Tudorache, A., Tudorache, V., Vazquez Doce, O., Widmann, E., and Zmeskal, J.

Published
2012
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40. Pionic hydrogen and deuterium

Author

Gotta, Detlev, Amaro, F. D., Anagnostopoulos, D. F., Bühler, P., Gorke, H., Covita, D. S., Fuhrmann, H., Gruber, A., Hennebach, M., Hirtl, A., Ishiwatari, T., Indelicato, P., Le Bigot, E.-O., Marton, J., Nekipelov, M., dos Santos, J. M. F., Schlesser, S., Schmid, Ph., Simons, L. M., Strauch, Th., Trassinelli, M., Veloso, J. F. C. A., and Zmeskal, J.

Published
2012
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47. Kaonic atoms measurements at the DAΦNE accelerator

Author

Curceanu (Petrascu), C., Bazzi, M., Beer, G., Bombelli, L., Bragadireanu, A. M., Cargnelli, M., Fiorini, C., Frizzi, T., Ghio, F., Girolami, B., Guaraldo, C., Hayano, R., Iliescu, M., Ishiwatari, T., Iwasaki, M., Kienle, P., Lechner, P., Levi Sandri, P., Longoni, A., Lucherini, V., Marton, J., Okada, S., Pietreanu, D., Ponta, T., Romero Vidal, A., Scordo, A., Shi, H. -X., Shirghi, D. L., Sirghi, F., Soltau, H., Struder, L., Tatsuno, H., Vazquez Doce, O., Widmann, E., and Zmeskal, J.

Published
2009
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48. Line shape of the μH(3p - 1s) transition

Author

Covita, D. S., Anagnostopoulos, D. F., Gorke, H., Gotta, D., Gruber, A., Hirtl, A., Ishiwatari, T., Indelicato, P., Le Bigot, E. -O., Nekipelov, M., dos Santos, J. M. F., Schmid, Ph., Simons, L. M., Trassinelli, M., Veloso, J. F. C. A., and Zmeskal, J.

Published
2009
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49. New X-ray detectors for exotic atom research

Author

Marton, Johann, Cargnelli, M., Ishiwatari, T., Kienle, R, Nikolics, K., Widmann, E., Zmeskal, J., Bazzi, M., Catitti, M., Curceanu (Petrascu), C., Guaraldo, C., Iliescu, M., Sandri, R. Levi, Lucherini, V., Okada, S., Pietreanu, D., Vidal, A. Romero, Scordo, A., Sirghi, D.L., Sirghi, F., Doce, O. Vazquez, Beer, G., Bombelli, L., Fiorini, C., Frizzi, T., Longoni, A., Bragadireanu, A.M., Ponta, T., Ghio, F., Girolami, B., Hayano, R., Tatsuno, H., Xe-Hi, S., Iwasaki, M., Lechner, P., Soltau, H., and Struder, L.

Subjects
Hadron spectroscopy -- Methods, Business, Electronics, Electronics and electrical industries
Abstract

Hadronic atoms being Coulomb-bound systems in which the electron is substituted by a hadron like a negatively charged K meson are perfect probes for the study of strong interaction at lowest energies using x-ray spectroscopy. New large area x-ray detectors (silicon drift detectors, SDDs) were developed to provide excellent energy resolution as well as timing capability. For the first time large area SDDs were employed to measure the L-lines of kaonic helium at high precision thus succeeding in clarifying a puzzle persisting for 30 years since the 70's. An array of about 200 even more sophisticated SDDs (1 [cm.sup.2] SDDs with monolithically integrated FET) will be used to perform precision measurements (i.e., at the eV level) of kaonic hydrogen and kaonic deuterium at the DAFNE [PHI] factory of LNF/Italy. The new x-ray detectors and their performance for precision experiments in the accelerator environment are presented. Index Terms--kaonic atoms, silicon drift detectors, strong interaction studies, X-ray spectroscopy.

Published
2009

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