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1. Potentialities of CdZnTe Quasi-Hemispherical Detectors for Hard X-ray Spectroscopy of Kaonic Atoms at the DAΦNE Collider

Author

Leonardo Abbene, Antonino Buttacavoli, Fabio Principato, Gaetano Gerardi, Manuele Bettelli, Andrea Zappettini, Massimiliano Bazzi, Mario Bragadireanu, Michael Cargnelli, Marco Carminati, Alberto Clozza, Griseld Deda, Raffaele Del Grande, Luca De Paolis, Laura Fabbietti, Carlo Fiorini, Carlo Guaraldo, Mihail Iliescu, Misahiko Iwasaki, Aleksander Khreptak, Simone Manti, Johann Marton, Marco Miliucci, Pawel Moskal, Fabrizio Napolitano, Szymon Niedźwiecki, Hiroaky Ohnishi, Kristian Piscicchia, Yuta Sada, Francesco Sgaramella, Hexi Shi, Michalł Silarski, Diana Laura Sirghi, Florin Sirghi, Magdalena Skurzok, Antonio Spallone, Kairo Toho, Marlene Tüchler, Oton Vazquez Doce, Chihiro Yoshida, Johannes Zmeskal, Alessandro Scordo, and Catalina Curceanu

Subjects
CdZnTe detectors, quasi-hemispherical detectors, compound semiconductor detectors, hard X-ray spectroscopy, kaonic atoms, digital pulse processing electronics, Chemical technology, TP1-1185
Abstract

Kaonic atom X-ray spectroscopy is a consolidated technique for investigations on the physics of strong kaon–nucleus/nucleon interaction. Several experiments have been conducted regarding the measurement of soft X-ray emission (20 keV) from intermediate kaonic atoms (carbon, aluminum, and sulfur). In this context, we investigated cadmium–zinc–telluride (CdZnTe or CZT) detectors, which have recently demonstrated high-resolution capabilities for hard X-ray and gamma-ray detection. A demonstrator prototype based on a new cadmium–zinc–telluride quasi-hemispherical detector and custom digital pulse processing electronics was developed. The detector covered a detection area of 1 cm2 with a single readout channel and interesting room-temperature performance with energy resolution of 4.4% (2.6 keV), 3% (3.7 keV), and 1.4% (9.3 keV) FWHM at 59.5, 122.1, and 662 keV, respectively. The results from X-ray measurements at the DAΦNE collider at the INFN National Laboratories of Frascati (Italy) are also presented with particular attention to the effects and rejection of electromagnetic and hadronic background.

Published
2023
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2. Search for a remnant violation of the Pauli exclusion principle in a Roman lead target

Author

Kristian Piscicchia, Edoardo Milotti, Aidin Amirkhani, Sergio Bartalucci, Sergio Bertolucci, Massimiliano Bazzi, Mario Bragadireanu, Michael Cargnelli, Alberto Clozza, Raffaele Del Grande, Luca De Paolis, Jean-Pierre Egger, Carlo Fiorini, Carlo Guaraldo, Mihail Iliescu, Matthias Laubenstein, Johann Marton, Marco Miliucci, Andreas Pichler, Dorel Pietreanu, Alessandro Scordo, Hexi Shi, Diana Laura Sirghi, Florin Sirghi, Laura Sperandio, Oton Vazquez Doce, Johann Zmeskal, and Catalina Curceanu

Subjects
Astrophysics, QB460-466, Nuclear and particle physics. Atomic energy. Radioactivity, QC770-798
Abstract

Abstract In this paper we report on the results of two analyses of the data taken with a dedicated VIP-Lead experiment at the Gran Sasso National Laboratory of the INFN. We use measurements taken in an environment that is especially well screened from cosmic rays, with a metal target made of “Roman lead” which is characterised by a low level of intrinsic radioactivity. The analyses lead to an improvement, on the upper bounds of the Pauli Exclusion Principle violation for electrons, which is more than one (four) orders of magnitude, when the electron-atom interactions are described in terms of scatterings (or close encounters) respectively.

Published
2020
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3. Testing the Pauli Exclusion Principle with the VIP-2 Experiment

Author

Fabrizio Napolitano, Sergio Bartalucci, Sergio Bertolucci, Massimiliano Bazzi, Mario Bragadireanu, Cesidio Capoccia, Michael Cargnelli, Alberto Clozza, Luca De Paolis, Raffaele Del Grande, Carlo Fiorini, Carlo Guaraldo, Mihail Iliescu, Matthias Laubenstein, Johann Marton, Marco Miliucci, Edoardo Milotti, Federico Nola, Kristian Piscicchia, Alessio Porcelli, Alessandro Scordo, Francesco Sgaramella, Hexi Shi, Diana Laura Sirghi, Florin Sirghi, Oton Vazquez Doce, Johann Zmeskal, and Catalina Curceanu

Subjects
Pauli Exclusion Principle, X-rays, VIP-2, fundamental symmetries, Mathematics, QA1-939
Abstract

Violations of the Pauli Exclusion Principle (PEP), albeit small, could be motivated by physics beyond the Standard Model, ranging from violation of Lorentz invariance to extra space dimensions. This scenario can be experimentally constrained through dedicated, state-of-the-art X-ray spectroscopy, searching for a forbidden atomic transition from the L shell to the K shell already occupied by two electrons. The VIP-2 Experiment located at the underground Gran Sasso National Laboratories of INFN (Italy) tests PEP violations by introducing new electrons via a direct current in a copper conductor, measuring the X-ray energies through a silicon drift detector. Bayesian and frequentist analyses of approximately six months of data taken with the fully operational setup is presented, setting the strongest limit to date on the PEP violation shown by the VIP collaboration. The upper bound on PEP violation are placed at 90% CL β2/2≤6.8×10−42 with the Bayesian approach, and β2/2≤7.1×10−42 with the frequentist CLs technique.

Published
2022
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4. Silicon Drift Detectors’ Spectroscopic Response during the SIDDHARTA-2 Kaonic Helium Run at the DAΦNE Collider

Author

Marco Miliucci, Massimiliano Bazzi, Damir Bosnar, Mario Bragadireanu, Marco Carminati, Michael Cargnelli, Alberto Clozza, Catalina Curceanu, Griseld Deda, Luca De Paolis, Raffaele Del Grande, Carlo Fiorini, Carlo Guaraldo, Mihail Iliescu, Masahiko Iwasaki, Pietro King, Paolo Levi Sandri, Johann Marton, Paweł Moskal, Fabrizio Napolitano, Szymon Niedźwiecki, Kristian Piscicchia, Alessandro Scordo, Francesco Sgaramella, Hexi Shi, Michał Silarski, Diana Sirghi, Florin Sirghi, Magdalena Skurzok, Antonio Spallone, Marlene Tüchler, Oton Vazquez Doce, and Johann Zmeskal

Subjects
X-ray precision spectroscopy, kaonic atoms, SIDDHARTA-2, Physics, QC1-999
Abstract

A large-area silicon drift detectors (SDDs) system has been developed by the SIDDHARTA-2 collaboration for high precision light kaonic atom X-ray spectroscopy at the DAΦNE collider of Istituto Nazionale di Fisica Nucleare—Laboratori Nazionali di Frascati. The SDDs’ geometry and electric field configuration, combined with their read-out electronics, make these devices suitable for performing high precision light kaonic atom spectroscopy measurements in the background of the DAΦNE collider. This work presents the spectroscopic response of the SDDs system during the first exotic atoms run of SIDDHARTA-2 with kaonic helium, a preliminary to the kaonic deuterium data taking campaign. The SIDDHARTA-2 spectroscopic system has good energy resolution and a 2 μs timing window which rejects the asynchronous events, scaling the background by a factor of 10−5. The results obtained for the first exotic atoms run of SIDDHARTA-2 prove this system to be ready to perform the challenging kaonic deuterium measurement.

Published
2021
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5. Semi-Analytical Monte Carlo Method to Simulate the Signal of the VIP-2 Experiment

Author

Edoardo Milotti, Sergio Bartalucci, Sergio Bertolucci, Massimiliano Bazzi, Mario Bragadireanu, Michael Cargnelli, Alberto Clozza, Catalina Curceanu, Luca De Paolis, Raffaele Del Grande, Carlo Guaraldo, Mihail Iliescu, Matthias Laubenstein, Johann Marton, Marco Miliucci, Fabrizio Napolitano, Kristian Piscicchia, Alessandro Scordo, Hexi Shi, Diana Laura Sirghi, Florin Sirghi, Laura Sperandio, Oton Vázquez Doce, and Johann Zmeskal

Subjects
pauli exclusion principle, X-rays, diffusion processes, fundamental symmetries, Mathematics, QA1-939
Abstract

The VIP-2 collaboration runs an apparatus in the Gran Sasso underground laboratories of the Italian Institute for Nuclear Physics (INFN) designed to search for anomalous X-rays from electron-atom interactions due to violations of the fundamental antisymmetry of multi-electron wavefunctions. The experiment implements the scheme first proposed by Ramberg and Snow, where a current source injects electrons into a metal strip (the experiment’s target). In this paper we describe the structure of a Monte Carlo program to simulate a new upgrade of the experiment, where the anomalous X-ray emission is modulated by an arbitrary time-varying input current. A novel feature of the simulation algorithm is that the Monte Carlo program is based on a mixture of analytical and numerical methods. We report preliminary, exploratory results on the expected detection rate for different modulations of the injected current; these results are a starting point on the way to optimize the modulation scheme and indicate a large potential improvement of the detection sensitivity.

Published
2020
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6. VIP-2 —High-Sensitivity Tests on the Pauli Exclusion Principle for Electrons

Author

Kristian Piscicchia, Johann Marton, Sergio Bartalucci, Massimiliano Bazzi, Sergio Bertolucci, Mario Bragadireanu, Michael Cargnelli, Alberto Clozza, Raffaele Del Grande, Luca De Paolis, Carlo Fiorini, Carlo Guaraldo, Mihail Iliescu, Matthias Laubenstein, Marco Miliucci, Edoardo Milotti, Fabrizio Napolitano, Andreas Pichler, Alessandro Scordo, Hexi Shi, Diana Laura Sirghi, Florin Sirghi, Laura Sperandio, Oton Vazquez Doce, Johann Zmeskal, and Catalina Curceanu

Subjects
Pauli Principle violation, X-ray spectroscopy, underground experiment, Science, Astrophysics, QB460-466, Physics, QC1-999
Abstract

The VIP collaboration is performing high sensitivity tests of the Pauli Exclusion Principle for electrons in the extremely low cosmic background environment of the underground Gran Sasso National Laboratory INFN (Italy). In particular, the VIP-2 Open Systems experiment was conceived to put strong constraints on those Pauli Exclusion Principle violation models which respect the so-called Messiah–Greenberg superselection rule. The experimental technique consists of introducing a direct current in a copper conductor, and searching for the X-rays emission coming from a forbidden atomic transition from the L shell to the K shell of copper when the K shell is already occupied by two electrons. The analysis of the first three months of collected data (in 2018) is presented. The obtained result represents the best bound on the Pauli Exclusion Principle violation probability which fulfills the Messiah–Greenberg rule.

Published
2020
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7. High Precision Test of the Pauli Exclusion Principle for Electrons

Author

Kristian Piscicchia, Aidin Amirkhani, Sergio Bartalucci, Sergio Bertolucci, Massimiliano Bazzi, Mario Bragadireanu, Michael Cargnelli, Alberto Clozza, Catalina Curceanu, Raffaele Del Grande, Luca De Paolis, Jean-Pierre Egger, Carlo Fiorini, Carlo Guaraldo, Mihail Iliescu, Matthias Laubenstein, Johann Marton, Marco Miliucci, Edoardo Milotti, Andreas Pichler, Dorel Pietreanu, Alessandro Scordo, Hexi Shi, Diana Laura Sirghi, Florin Sirghi, Laura Sperandio, Oton Vazquez Doce, and Johann Zmeskal

Subjects
Pauli exclusion principle, quantum foundations, X-ray spectroscopy, underground experiment, Physics, QC1-999
Abstract

The VIP-2 experiment aims to perform high precision tests of the Pauli Exclusion Principle for electrons. The method consists in circulating a continuous current in a copper strip, searching for the X radiation emission due to a prohibited transition (from the 2p level to the 1s level of copper when this is already occupied by two electrons). VIP already set the best limit on the PEP violation probability for electrons 1 2 β 2 < 4.7 × 10 − 29 , the goal of the upgraded VIP-2 (VIolation of the Pauli Exclusion Principle-2) experiment is to improve this result of two orders of magnitude at least. The experimental apparatus and the results of the analysis of a first set of collected data will be presented.

Published
2019
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8. X-ray Detectors for Kaonic Atoms Research at DAΦNE

Author

Catalina Curceanu, Aidin Amirkhani, Ata Baniahmad, Massimiliano Bazzi, Giovanni Bellotti, Carolina Berucci, Damir Bosnar, Mario Bragadireanu, Michael Cargnelli, Alberto Clozza, Raffaele Del Grande, Carlo Fiorini, Francesco Ghio, Carlo Guaraldo, Mihail Iliescu, Masaiko Iwasaki, Paolo Levi Sandri, Johann Marton, Marco Miliucci, Pavel Moskal, Szymon Niedźwiecki, Shinji Okada, Dorel Pietreanu, Kristian Piscicchia, Alessandro Scordo, Hexi Shi, Michal Silarski, Diana Sirghi, Florin Sirghi, Magdalena Skurzok, Antonio Spallone, Hideyuki Tatsuno, Oton Vazquez Doce, Eberhard Widmann, and Johann Zmeskal

Subjects
kaonic atoms, strong interaction, X-ray detectors, Physics, QC1-999
Abstract

This article presents the kaonic atom studies performed at the INFN National Laboratory of Frascati (Laboratori Nazionali di Frascati dell’INFN, LNF-INFN) since the opening of this field of research at the DA Φ NE collider in early 2000. Significant achievements have been obtained by the DA Φ NE Exotic Atom Research (DEAR) and Silicon Drift Detector for Hadronic Atom Research by Timing Applications (SIDDHARTA) experiments on kaonic hydrogen, which have required the development of novel X-ray detectors. The 2019 installation of the new SIDDHARTA-2 experiment to measure kaonic deuterium for the first time has been made possible by further technological advances in X-ray detection.

Published
2019
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9. On the Importance of Electron Diffusion in a Bulk-Matter Test of the Pauli Exclusion Principle

Author

Edoardo Milotti, Sergio Bartalucci, Sergio Bertolucci, Massimiliano Bazzi, Mario Bragadireanu, Michael Cargnelli, Alberto Clozza, Catalina Curceanu, Luca De Paolis, Jean-Pierre Egger, Carlo Guaraldo, Mihail Iliescu, Matthias Laubenstein, Johann Marton, Marco Miliucci, Andreas Pichler, Dorel Pietreanu, Kristian Piscicchia, Alessandro Scordo, Hexi Shi, Diana Laura Sirghi, Florin Sirghi, Laura Sperandio, Oton Vázquez Doce, Eberhard Widmann, and Johann Zmeskal

Subjects
Pauli exclusion principle, X-rays, diffusion processes, fundamental symmetries, Science, Astrophysics, QB460-466, Physics, QC1-999
Abstract

The VIolation of Pauli (VIP) experiment (and its upgraded version, VIP-2) uses the Ramberg and Snow (RS) method (Phys. Lett. B 1990, 238, 438) to search for violations of the Pauli exclusion principle in the Gran Sasso underground laboratory. The RS method consists of feeding a copper conductor with a high direct current, so that the large number of newly-injected conduction electrons can interact with the copper atoms and possibly cascade electromagnetically to an already occupied atomic ground state if their wavefunction has the wrong symmetry with respect to the atomic electrons, emitting characteristic X-rays as they do so. In their original data analysis, RS considered a very simple path for each electron, which is sure to return a bound, albeit a very weak one, because it ignores the meandering random walks of the electrons as they move from the entrance to the exit of the copper sample. These complex walks bring the electrons close to many more atoms than in the RS calculation. Here, we consider the full description of these walks and show that this leads to a nontrivial and nonlinear X-ray emission rate. Finally, we obtain an improved bound, which sets much tighter constraints on the violation of the Pauli exclusion principle for electrons.

Published
2018
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10. Collapse models under test by high sensitivity γ-ray and X-ray measurements

Author

Catalina Curceanu, Kristian Piscicchia, Massimiliano Bazzi, Mario Bragadireanu, Michael Cargnelli, Alberto Clozza, Luca De Paolis, Raffaele Del Grande, Carlo Guaraldo, Mihail Iliescu, Matthias Laubenstein, Johann Marton, Marco Miliucci, Fabrizio Napolitano, Alessio Porcelli, Alessandro Scordo, Francesco Sgarmella, Hexi Shi, Diana Laura Sirghi, Florin Sirghi, Oton Vazquez Doce, and Johann Zmeskal

Published
2023

14. High precision Kaonic Deuterium measurement at the DAΦNE collider: the SIDDHARTA-2 experiment and the SIDDHARTINO run

Author

Marco Miliucci, Massimiliano Bazzi, Damir Bosnar, Mario Bragadireanu, Marco Carminati, Michael Cargnelli, Alberto Clozza, Catalina Curceanu, Griseld Deda, Luca De Paolis, Raffaele Del Grande, Carlo Fiorini, Carlo Guaraldo, Mihail Iliescu, Masahiko Iwasaki, Pietro King, Paolo Levi Sandri, Johann Marton, Paweł Moskal, Fabrizio Napolitano, Szymon Nied´zwiecki, Kristian Piscicchia, Alessandro Scordo, Francesco Sgaramella, Hexi Shi, Michał Silarski, Diana Sirghi, Florin Sirghi, Magdalena Skurzok, Antonio Spallone, Marlene T¨uchler, Oton Vazquez Doce, and Johann Zmeskal

Subjects
mesonic, solid-state detectors, radiation detectors, hyperonic and antiprotonic atoms and molecules, x- and Γ-ray spectroscopy, kaonic atoms, SIDDHARTA-2
Abstract

The kaonic deuterium 2p→1s transition X-ray measurement, a fundamental information needed for a deeper understanding of the Quantum ChromoDynamics (QCD) in the strangeness sector, is still missing. The SIDDHARTA-2 collaboration is now ready to achieve this unprecedented result thanks to the dedicated experimental apparatus that will allow to obtain the values of the kaonic deuterium K-transitions with a precision comparable to the most precise kaonic hydrogen measurement to-date performed by SIDDHARTA in 2009. Both the kaonic hydrogen and kaonic deuterium X-ray spectroscopy measurements of the de-excitation towards the fundamental level are a direct probe on KN interaction at threshold, as opposed to the scattering experiments which need an extrapolation to zero energy. Combining these results through the Deser-Truemann like formula, the isospin-dependent kaon-nucleon scattering lengths can be obtained in a model-independent way. The SIDDHARTA-2 setup is presently installed at the DAΦNE (Double Annular Φ Factory for Nice Experiments) collider of Istituto Nazionale di Fisica Nucleare – Laboratori Nazionali di Frascati and it is ready to perform the challening kaonic deuterium measurement. Thispaper provides an overview on the SIDDHARTA-2 experimental apparatus and a preliminary result of the kaonic helium run, preparatory for the SIDDHARTA-2 data taking campaign, is also presented.

Published
2022

15. Testing Pauli Exclusion Principle for electrons at the LNGS underground laboratory: The VIP-2 experiment

Author

Luca De Paolis, Fabrizio Napolitano, kristian Piscicchia, Sergio Bartalucci, Sergio Bertolucci, Massimiliano Bazzi, Mario bragadireanu, Michael Cargnelli, Alberto Clozza, Carlo Fiorini, Carlo Guaraldo, Mihai Iliescu, Matthias Laubenstein, Johann Marton, Marco Miliucci, Edoardo Milotti, Alessio Porcelli, Alessandro Scordo, Francesco Sgaramella, Hexi Shi, Florin Catalin Sirghi, Johann Zmeskal, Catalina Curceanu, Raffaele Del Grande, and Diana Laura SIRGHI

Published
2022

16. Summary of the $K^- pp$ bound-state observation in E15 and future prospects

Author

Fuminori Sakuma, Shuhei Ajimura, Takaya Akaishi, Hidemitsu Asano, Massimiliano Bazzi, George Beer, Hyoungchan Bhang, Mario Bragadireanu, Paul Buehler, Luigi Busso, Michael Cargnelli, Seonho Choi, Alberto Clozza, Catalina Curceanu, Shun Enomoto, Hiroyuki Fujioka, Yuya Fujiwara, Tomokazu Fukuda, Carlo Guaraldo, Tadashi Hashimoto, Ryugo S. Hayano, Toshihiko Hiraiwa, Masami Iio, Mihai Iliescu, Kentaro Inoue, Yosuke Ishiguro, Takashi Ishikawa, Shigeru Ishimoto, Kenta Itahashi, Masahiko Iwasaki, Masaaki Iwai, Koki Kanno, Kazuma Kato, Yuko Kato, Shingo Kawasaki, Paul Kienle, Hiroshi Kou, Yue Ma, Johann Marton, Yasuyuki Matsuda, Marco Miliucci, Yutaka Mizoi, Ombretta Morra, Rie Murayama, Tomofumi Nagae, Hiroyuki Noumi, Hiroaki Ohnishi, Shinji Okada, Haruhiko Outa, Kyoichiro Ozawa, Kristian Piscicchia, Yuta Sada, Atsushi Sakaguchi, Masaharu Sato, Alessandro Scordo, Michiko Sekimoto, Hexi Shi, Kotaro Shirotori, Diana Sirghi, Florin Sirghi, Shoji Suzuki, Takatoshi Suzuki, Kiyoshi Tanida, Hideyuki Tatsuno, Makoto Tokuda, Dai Tomono, Akihisa Toyoda, Kyo Tsukada, Oton Vázquez Doce, Eberhard Widmann, Takumi Yamaga, Toshimitsu Yamazaki, Chihiro Yoshida, Qi Zhang, and Johann Zmeskal

Abstract

The possible existence of deeply-bound $\bar K$-nuclear bound states, kaonic nuclei, has been widely discussed as products of the strongly attractive $\bar K$Ninteraction in I = 0 channels. Investigations of those exotic states will provide us unique information of the $\bar K$Ninteraction below the threshold, which is still not fully understood so far. Recently, we observed the simplest kaonic nuclei, $\bar K$NN, having a much deeper binding energy than normal nuclei via inflight (K−,N) reactions at the J-PARC E15 experiment. For further studies, we have proposed a series of experimental programs for the systematic investigation of light kaonic nuclei, from $\bar K$N(Λ(1405)) to $\bar K$NNNN. We will measure the $\bar K$NNN(A= 3) system at the new experiment approved as J-PARC E80, as a first step toward a comprehensive study.

Published
2022

17. Analysis methods used and planned for VIP-2

Author

Alessio Porcelli, Sergio Bartalucci, Sergio Bertolucci, Massimiliano Bazzi, Mario Bragadireanu, Cesidio Capoccia, Michael Cargnelli, Alberto Clozza, Catalina Curceanu, Luca De Paolis, Raffaele Del Grande, Carlo Fiorini, Carlo Guaraldo, Mihai Iliescu, Matthias Laubenstein, Johann Marton, Marco Miliucci, Edoardo Milotti, Fabrizio Napolitano, Kristian Piscicchia, Alessandro Scordo, Hexi Shi, Diana Laura Sirghi, Florin Sirghi, Francesco Sgaramella, Oton Vazquez Doce, and Johann Zmeskal

Abstract

VIP-2 (VIolation of Pauli exclusion principle - 2) is an underground experiment sited in the underground “Laboratori Nazionali del Gran Sasso.” It aims to investigate possible violations of the Pauli Exclusion Principle (PEP) and, in this context, Quantum Gravity models implying violations of PEP. While an upper limit of PEP violation probability is recently published, the data requires further developments of accurate analysis techniques and methods. In this contribution, we present an overview of the methodologies proposed for current and planned analysis.

Published
2022
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18. Kaonic atoms measurements at the DAΦNE collider : the SIDDHARTA-2 experiment

Author

Catalina Curceanu, Marco Miliucci, Massimiliano Bazzi, Damir Bosnar, Mario Bragadireanu, Marco Carminati, Michael Cargnelli, Alberto Clozza, Griseld Deda, Luca De Paolis, Raffaele Del Grande, Carlo Fiorini, Carlo Guaraldo, Mihail Iliescu, Masahiko Iwasaki, Pietro King, Paolo Levi Sandri, Johann Marton, Paweł Moskal, Fabrizio Napolitano, Szymon Niedźwiecki, Kristian Piscicchia, Alessandro Scordo, Francesco Sgaramella, Hexi Shi, Michał Silarski, Diana Sirghi, Florin Sirghi, Magdalena Skurzok, Antonio Spallone, Marlene Tüchler, Oton Vazquez Doce, and Johann Zmeskal

Subjects
Physics, QC1-999, Nuclear Theory, Physics::Accelerator Physics, Physics::Atomic Physics, Nuclear Experiment
Abstract

The X-ray spectroscopy measurements of light kaonic atoms’ deexcitation towards the fundamental level provide unique information on the low-energy Quantum ChromoDynamics (QCD) in the strangeness sector, being a direct probe of the kaon/nucleon interaction at threshold, unobtainable through the scattering experiments. In this framework, the SIDDHARTA-2 collaboration is going to perform the first kaonic deuterium 2p → 1s transition measurement at the DAΦNE collider of Istituto Nazionale di Fisica Nucleare – Laboratori Nazionali di Frascati. Combining this measurement with the kaonic hydrogen one performed by SIDDHARTA in 2009 it will be possible to obtain, in a model-independent way, the isospin-dependent antikaon-nucleon scattering lengths. The paper introduces the SIDDHARTA-2 setup, an upgraded version with respect to the one used for the kaonic hydrogen measurement, dedicated to the ambitious kaonic deuterium measurement, together with the preliminary results obtained during the kaonic helium run, preparatory for the SIDDHARTA-2 data taking campaign.

Published
2022

19. 'K−pp', a K‾-meson nuclear bound state, observed in 3He(K−,Λp)n reactions

Author

S. Kawasaki, K. Itahashi, C. Guaraldo, H. Kou, D. Tomono, Hexi Shi, Atsushi Sakaguchi, Paul Kienle, Florin Sirghi, T. Ishikawa, Michiko Sekimoto, Tomokazu Fukuda, Y. Fujiwara, S. Choi, Shinji Okada, O. Morra, T. Yamaga, Kiyoshi Tanida, T. Suzuki, Haruhiko Outa, Ryugo S. Hayano, Carolina Berucci, T. Yamazaki, L. Busso, Michael Cargnelli, S. Ishimoto, K. Inoue, Akihiro Toyoda, Shun Enomoto, Hiroyuki Noumi, Y. Kato, E. Widmann, Tomofumi Nagae, G. A. Beer, Paul Buehler, K. Kato, S. Ajimura, Masami Iio, Johann Marton, Hiroaki Ohnishi, Catalina Curceanu, Koki Kanno, Yue Ma, Y. Ishiguro, S. Y. Suzuki, K. Piscicchia, M. Sato, O. Vazquez Doce, Mario Bragadireanu, M. Iliescu, Kyo Tsukada, Yutaka Mizoi, H. Asano, J. Zmeskal, Yuji Matsuda, Makoto Tokuda, Hiroyuki Fujioka, Toshihiko Hiraiwa, H. Tatsuno, Ken Suzuki, Y. Sada, H. C. Bhang, Masahiko Iwasaki, Kotaro Shirotori, Q. Zhang, Alessandro Scordo, T. Hashimoto, Fuminori Sakuma, and Diana Sirghi

Subjects
Physics, Nuclear and High Energy Physics, Meson, 010308 nuclear & particles physics, 0103 physical sciences, Bound state, Analytical chemistry, Invariant mass, Strangeness, 010306 general physics, 01 natural sciences
Abstract

We observed a distinct peak in the Λp invariant mass spectrum of He 3 ( K − , Λ p ) n , well below m K + 2 m p , i.e., the mass threshold of the K − to be bound to two protons. By selecting a relatively large momentum-transfer region q = 350 ∼ 650 MeV/c, one can kinematically separate the peak from the quasi-free process, K ‾ N → K ‾ N followed by the non-resonant absorption by the two spectator-nucleons K ‾ N N → Λ N . We found that the simplest fit to the observed peak gives us a Breit–Wigner pole position at B Kpp = 47 ± 3 ( s t a t . ) − 6 + 3 ( s y s . ) MeV having a width Γ Kpp = 115 ± 7 ( s t a t . ) − 20 + 10 ( s y s . ) MeV, and the S-wave Gaussian reaction form-factor parameter Q Kpp = 381 ± 14 ( s t a t . ) − 0 + 57 ( s y s . ) MeV/c, as a new form of the nuclear bound system with strangeness – “ K − p p ”.

Published
2019

20. Recent Results and Future Prospects of Kaonic Nuclei at J-PARC

Author

M. Simon, C. Yoshida, Takashi Ishikawa, K. Inoue, Yuuki Fujiwara, D. Tomono, S. Kawasaki, Hiroyuki Fujioka, Kotaro Shirotori, Kristian Piscicchia, Atsushi Sakaguchi, Florin Sirghi, Toshimitsu Yamazaki, M. Bragadireanu, G. Beer, S. Choi, Kenta Itahashi, H. Outa, Koki Kanno, O. Morra, Massimiliano Bazzi, M. Cargnelli, Hiroyuki Noumi, M. Iwai, Catalina Curceanu, Alessandro Scordo, T. Hashimoto, M. Sato, Paul Kienle, Michiko Sekimoto, Kyo Tsukada, Kiyoshi Tanida, Hyeongchan Bhang, D. L. Sirghi, T. Akaishi, R. Murayama, H. Asano, Alberto Clozza, Y. Ishiguro, C. Guaraldo, Hirofumi Kou, Y. Kato, Yuji Matsuda, Yue Ma, Tomofumi Nagae, Fuminori Sakuma, Y. Sada, M. Iliescu, Toshihiko Hiraiwa, Qi Zhang, L. Busso, S. Ishimoto, Johannes Zmeskal, Tomokazu Fukuda, Ryugo S. Hayano, Yutaka Mizoi, Eberhard Widmann, Akihisa Toyoda, Masahiko Iwasaki, Hexi Shi, J. Marton, Shun Enomoto, Kyoichiro Ozawa, Shoji Suzuki, M. Miliucci, Makoto Tokuda, T. Yamaga, Paul Buehler, K. Kato, H. Tatsuno, O. Vazquez Doce, Takatoshi Suzuki, S. Ajimura, Masami Iio, Hiroaki Ohnishi, and Shinji Okada

Subjects
Physics, Particle physics, Nuclear Theory, Series (mathematics), Binding energy, FOS: Physical sciences, Lambda, Measure (mathematics), Atomic and Molecular Physics, and Optics, Nuclear Theory (nucl-th), J-PARC, Nuclear Experiment (nucl-ex), Nuclear Experiment, Beam (structure), Bar (unit)
Abstract

$\bar K$-nuclear bound systems, kaonic nuclei, have been widely discussed as products of the strongly attractive $\bar K N$ interaction in $I = 0$ channels. Recently, we demonstrated that kaonic nuclei can be produced via in-flight $(K^-,N)$ reactions using the low-momentum DC kaon beam at the J-PARC E15 experiment. We observed the simplest kaonic nuclei, $K^-pp$, having a much deeper binding energy than normal nuclei. For further studies, we have proposed a series of experimental programs for the systematic investigation of light kaonic nuclei, from $\bar K N$ ($\Lambda(1405)$) to $\bar K NNNN$. In the new experiment approved as J-PARC E80, we will measure the $\bar K NNN$ ($A=3$) system as a first step toward a comprehensive study., Comment: 10 pages, 5 figures, proceedings of the 8th Asia-Pacific Conference on Few-Body Problems in Physics (APFB2020), accepted for publication in Fwe-Body Systems

Published
2021

21. Kaonic Atoms Measurements at DA Φ NE: SIDDHARTA-2 and Future Perspectives

Author

D. Bosnar, Magdalena Skurzok, J. Marton, O. Vazquez Doce, L. De Paolis, Hexi Shi, C. Guaraldo, Fabrizio Napolitano, K. Piscicchia, Catalina Curceanu, Massimiliano Bazzi, Carlo Fiorini, M. Iliescu, A. Spallone, Florin Sirghi, Alberto Clozza, M. Cargnelli, Marco Miliucci, M. Tüchler, Paweł Moskal, Diana Sirghi, Alessandro Scordo, P. Levi Sandri, R. Del Grande, Pietro King, Szymon Niedźwiecki, G. Deda, Marco Carminati, F. Sgaramella, Mario Bragadireanu, Johann Zmeskal, Michał Silarski, and M. Iwasaki

Subjects
Physics, 010308 nuclear & particles physics, Scattering, Nuclear Theory, Phase (waves), Extrapolation, Zero-point energy, 01 natural sciences, Atomic and Molecular Physics, and Optics, law.invention, Nuclear physics, Deuterium, law, Isospin, 0103 physical sciences, Physics::Accelerator Physics, Physics::Atomic Physics, Collider, Spectroscopy, Nuclear Experiment, 010303 astronomy & astrophysics
Abstract

High precision light kaonic atoms X-ray spectroscopy is a unique tool for performing experiments equivalent to scattering at vanishing relative energies, to determine the antikaon–nucleus interaction at threshold without the need of extrapolation to zero energy. The SIDDHARTA-2 collaboration is going to perform the first measurement of kaonic deuterium transitions to the fundamental level, which is mandatory to extract the isospin dependent antikaon–nucleon scattering lengths. The SIDDHARTA-2 experiment is presently installed on the DA $$\Phi $$ NE collider of INFN-LNF. The preliminary results obtained during the machine commissioning phase in preparation for the kaonic deuterium data taking campaign, together with future perspectives for extreme precision kaonic atoms studies at DA $$\Phi $$ NE are presented.

Published
2021

22. Silicon drift detectors technology for high precision light Kaonic atoms spectroscopic measurements at the DA Φ NE collider

Author

L. De Paolis, Marco Miliucci, G. Deda, Johann Marton, M. Iliescu, D. Bosnar, Magdalena Skurzok, C. Guaraldo, P. Levi Sandri, Fabrizio Napolitano, K. Piscicchia, Mario Bragadireanu, Carlo Fiorini, Alberto Clozza, R. Del Grande, J. Zmeskal, Florin Sirghi, Catalina Curceanu, Diana Sirghi, M. Bazzi, Hexi Shi, Michael Cargnelli, M. Iwasaki, O. Vazquez Doce, Marco Carminati, Szymon Niedźwiecki, Paweł Moskal, Michał Silarski, A. Spallone, F. Sgaramella, P. King, Alessandro Scordo, and M. Tüchler

Subjects
Physics, Silicon, Strong interaction, Detector, Resolution (electron density), chemistry.chemical_element, Strangeness, law.invention, Nuclear physics, Data acquisition, chemistry, law, Collider, Line (formation)
Abstract

The SIDDHARTA-2 collaboration developed an innovative large area Silicon Drift Detectors technology to perform high precision spectroscopy for the investigation of the K¯ N strong interaction in the low-energy regime, in the strangeness sector. The SIDDHARTA-2 devices take advantage of special geometry to maximize the experimental geometrical acceptance together with a dedicated Front End electronics able to provide energy resolution of 163 1 eV at 170 K for the Fe Kα line and a linear response better than 10-3, both preserved along the whole DAQ analog-digital chain in a colliding beams challenging environment. In this work the SIDDHARTA-2 Silicon Drift Detectors spectroscopic characterization and the preliminary results obtained at the DAΦNE collider of Istituto Nazionale di Fisica Nucleare - Laboratori Nazionali di Frascati are presented.

Published
2021

23. γ-ray high sensitivity tests of Collapse Models

Author

Kristian Piscicchia, Massimiliano Bazzi, Mario Bragadireanu, Michael Cargnelli, Alberto Clozza, Luca De Paolis, Raffaele Del Grande, Carlo Guaraldo, Mihail Iliescu, Matthias Laubenstein, Johann Marton, Marco Miliucci, Fabrizio Napolitano, Alessio Porcelli, Alessandro Scordo, Francesco Sgarmella, Hexi Shi, Diana Laura Sirghi, Florin Sirghi, Oton Vazquez Doce, Johann Zmeskal, and Catalina Curceanu

Subjects
History, Computer Science Applications, Education, ddc
Abstract

The article reviews our recent experimental results on the Continuous Spontaneous Localization (CSL) model and on the gravity related collapse model developed by Diósi and Penrose (DP). These models of dynamical reduction of the wave function consist in non-linear and stochastic modifications of the Schröedinger equation, which lead to a progressive breakdown of the superposition principle, as the size of the system increases. We performed a high sensitivity survey of the spontaneous radiation phenomenon, predicted by the collapse models, at the Gran Sasso underground National Laboratory of INFN in Italy. Our studies set the strongest bounds on the CSL parameters, in a broad region of the parameters space, and rule out the DP in its present formulation.

Published
2020

24. (\bar{K}\)-Nuclear Bound State at J-PARC

Author

G. Beer, Michiko Sekimoto, L. Busso, Alessandro Scordo, Mario Bragadireanu, Ryugo S. Hayano, T. Hashimoto, K. Inoue, C. Guaraldo, Shoji Suzuki, Koki Kanno, Shigeru Ishimoto, O. Morra, Makoto Tokuda, Y. Sada, H. Asano, Johannes Zmeskal, Akihisa Toyoda, Diana Sirghi, Toshihiko Hiraiwa, M. Sato, Johann Marton, Michael Cargnelli, Y. Ishiguro, Paul Buehler, K. Kato, Y. Kato, Fuminori Sakuma, Paul Kienle, Kyo Tsukada, Kenta Itahashi, H. Tatsuno, Ken Suzuki, M. Iliescu, Yasuyuki Matsuda, Kotaro Shirotori, Kristian Piscicchia, T. Yamaga, Kiyoshi Tanida, Hexi Shi, H. Kou, Haruhiko Outa, Hiroyuki Noumi, Yue Ma, Takashi Ishikawa, S. Kawasaki, Oton Vazquez Doce, Hyoungchan Bhang, Catalina Curceanu, Hiroyuki Fujioka, Carolina Berucci, Tomokazu Fukuda, Y. Fujiwara, Florin Sirghi, Shinji Okada, D. Tomono, Takatoshi Suzuki, Atsushi Sakaguchi, S. Ajimura, Masami Iio, Hiroaki Ohnishi, Yutaka Mizoi, Toshimitsu Yamazaki, Tomofumi Nagae, Shun Enomoto, Seonho Choi, Qi Zhang, Eberhard Widmann, and Masahiko Iwasaki

Subjects
Nuclear physics, Physics, Bar (music), Bound state, J-PARC
Published
2020

25. Search for a remnant violation of the Pauli exclusion principle in a Roman lead target

Author

Matthias Laubenstein, Marco Miliucci, Diana Sirghi, Michael Cargnelli, Massimiliano Bazzi, Dorel Pietreanu, Johann Marton, Luca De Paolis, C. Guaraldo, Florin Sirghi, Mario Bragadireanu, Edoardo Milotti, Catalina Curceanu, Kristian Piscicchia, Laura Sperandio, Raffaele Del Grande, Oton Vazquez Doce, Sergio Bertolucci, Johann Zmeskal, Carlo Fiorini, A. Amirkhani, Sergio Bartalucci, Hexi Shi, Alessandro Scordo, A. Pichler, M. Iliescu, Alberto Clozza, J. P. Egger, Piscicchia, K., Milotti, E., Amirkhani, A., Bartalucci, S., Bertolucci, S., Bazzi, M., Bragadireanu, M., Cargnelli, M., Clozza, A., Del Grande, R., Depaolis, L., Egger, J. -P., Fiorini, C., Guaraldo, C., Iliescu, M., Laubenstein, M., Marton, J., Miliucci, M., Pichler, A., Pietreanu, D., Scordo, A., Shi, H., Sirghi, D. L., Sirghi, F., Sperandio, L., Vazquezdoce, O., Zmeskal, J., and Curceanu, C.

Subjects
Particle physics, Physics and Astronomy (miscellaneous), Cosmic ray, lcsh:Astrophysics, 02 engineering and technology, Electron, 01 natural sciences, Quantum mechanics, Tests of fundamental symmetries, Orders of magnitude (bit rate), X-ray, symbols.namesake, Lead (geology), Pauli exclusion principle, X-rays, 0103 physical sciences, lcsh:QB460-466, 0202 electrical engineering, electronic engineering, information engineering, Tests of fundamental symmetrie, lcsh:Nuclear and particle physics. Atomic energy. Radioactivity, Engineering (miscellaneous), Physics, 010308 nuclear & particles physics, Spin-statistics connection, symbols, lcsh:QC770-798, 020201 artificial intelligence & image processing, National laboratory
Abstract

In this paper we report on the results of two analyses of the data taken with a dedicated VIP-Lead experiment at the Gran Sasso National Laboratory of the INFN. We use measurements taken in an environment that is especially well screened from cosmic rays, with a metal target made of “Roman lead” which is characterised by a low level of intrinsic radioactivity. The analyses lead to an improvement, on the upper bounds of the Pauli Exclusion Principle violation for electrons, which is more than one (four) orders of magnitude, when the electron-atom interactions are described in terms of scatterings (or close encounters) respectively.

Published
2020
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26. New Concepts in Tests of the Pauli Exclusion Principle in Bulk Matter

Author

J.-P. Egger, Marco Miliucci, Florin Sirghi, Mario Bragadireanu, C. Guaraldo, Sergio Bartalucci, R. Del Grande, L. De Paolis, Hexi Shi, Johann Marton, O. Vazquez Doce, M. Iliescu, Matthias Laubenstein, J. Zmeskal, Diana Sirghi, D. Pietreanu, M. Bazzi, Carlo Fiorini, Alberto Clozza, S. Bertolucci, Edoardo Milotti, A. Pichler, Alessandro Scordo, Catalina Curceanu, K. Piscicchia, Laura Sperandio, A. Amirkhani, Michael Cargnelli, Milotti, E., Piscicchia, K., Amirkhani, A., Bartalucci, S., Bertolucci, S., Bazzi, M., Bragadireanu, M., Cargnelli, M., Clozza, A., Del Grande, R., De Paolis, L., Egger, J. -P., Fiorini, C., Guaraldo, C., Iliescu, M., Laubenstein, M., Marton, J., Miliucci, M., Pichler, A., Pietreanu, D., Scordo, A., Shi, H., Sirghi, D. L., Sirghi, F., Sperandio, L., Vazquez Doce, O., Zmeskal, J., and Curceanu, C.

Subjects
Physics, electron diffusion, 010308 nuclear & particles physics, quantum mechanics, General Physics and Astronomy, experimental tests, quantum mechanic, 01 natural sciences, Theoretical physics, symbols.namesake, Pauli exclusion principle, electron capture, experimental test, 0103 physical sciences, symbols
Abstract

The standard scheme of several tests of the Pauli Exclusion Principle in bulk matter — both in the experiment and in the subsequent data analysis — has long been based on the seminal paper by E. Ramberg, G.A. Snow [Phys. Lett. B 238, 438 (1990)]. The ideas exposed in that paper are so simple and immediate that they have long gone unchallenged. However, while some of the underlying approximations are still valid, other parts of the article must be reconsidered. Here, we discuss some new concepts thatare related to the motion of the electrons in the test metal (the “target” of the experiment) and which have been recently studied in the framework of the VIP-2 Collaboration.

Published
2020

27. Low-energy K^{-} nucleon/multi-nucleon interaction studies by AMADEUS

Author

Florin Sirghi, S. Wycech, M. Cargnelli, Dorel Pietreanu, Gabriele Belotti, Paolo Levi Sandri, Carlo Fiorini, Massimiliano Bazzi, C. Guaraldo, D. L. Sirghi, Luca De Paolis, Magdalena Skurzok, A. Spallone, Damir Bosnar, Alessandro Scordo, Kristian Piscicchia, Catalina Curceanu, A. M. Bragadireanu, J. Marton, M. Iwasaki, Raffaele Del Grande, L. Fabbietti, Angels Ramos, A. D. Butt, Michał Silarski, Hexi Shi, Shinji Okada, Oton Vazquez Doce, M. Iliescu, Paweł Moskal, Eberhard Widmann, F. Ghio, Marco Miliucci, Johann Zmeskal, and Ryugo S. Hayano

Subjects
Quantum chromodynamics, Physics, Particle physics, law, Hadron, Strong interaction, High Energy Physics::Experiment, Production (computer science), State (functional analysis), Ideal (ring theory), Nucleon, Collider, law.invention
Abstract

The AMADEUS collaboration aims to provide new experimental constraints to the \(K^{-}\)N strong interaction in the regime of non-perturbative QCD, exploiting low-energy \(K^{-}\) hadronic interactions with light nuclei (e.g. H, \({}^{4}\)He, \({}^{9}\)Be and \({}^{12}\)C). The low-momentum kaons (\(p_{K}\) \(\sim \) 127 MeV/c) produced at the DA\(\Phi \)NE collider are ideal to explore both stopped and in-flight \(K^{-}\) nuclear captures. The KLOE detector is used as an active target, allowing to achieve excellent acceptance and resolutions for the data. In this work the results obtained from the study of \(\varLambda \pi ^{-}\) and \(\varLambda p\) correlated production in the final state are presented.

Published
2020

28. The key role of the Silicon Drift Detectors in testing the Pauli Exclusion Principle for electrons: the VIP-2 experiment

Author

Marco Miliucci, Johann Zmeskal, Sergio Bartalucci, Hexi Shi, Alessandro Scordo, Florin Sirghi, Mario Bragadireanu, J.-P. Egger, D. Pietreanu, S. Bertolucci, Matthias Laubenstein, A. Pichler, K. Piscicchia, Edoardo Milotti, T. Mazzocchi, Johann Marton, A. Amirkhani, Alberto Clozza, Laura Sperandio, M. Bazzi, R. Del Grande, L. De Paolis, Diana Sirghi, C. Guaraldo, Catalina Curceanu, Michael Cargnelli, Carlo Fiorini, M. Veith, M. Iliescu, O. Vazquez Doce, Paolis, L De, Amirkhani, A, Bartalucci, S, Bertolucci, S, Bazzi, M, Bragadireanu, M, Cargnelli, M, Clozza, A, Curceanu, C, Grande, R Del, Egger, J P, Fiorini, C, Guaraldo, C, Iliescu, M, Laubenstein, M, Marton, J, Mazzocchi, T, Miliucci, M, Milotti, E, Pichler, A, Pietreanu, D, Piscicchia, K, Scordo, A, Shi, H, Sirghi, D L, Sirghi, F, Sperandio, L, Vazquez Doce, O, Veith, M, and Zmeskal, J

Subjects
Physics, Paper, History, Silicon, 010308 nuclear & particles physics, Detector, chemistry.chemical_element, Electron, 01 natural sciences, Quantum mechanic, Quantum mechanics, Experimental tests, Spin-statistics connection, Computer Science Applications, Education, ddc, symbols.namesake, Pauli exclusion principle, chemistry, 0103 physical sciences, symbols, Key (cryptography), 010306 general physics
Abstract

The VIP experiment performed an accurate investigation of the Pauli Exclusion Principle for electrons. The apparatus was installed in the Gran Sasso Laboratories of the National Institute of Nuclear Physic in Italy, an underground environment with an extremely low cosmic background. The aim of the experiment was to test the Pauli Exclusion Principle for electrons in a copper target circulated by a Direct Current (DC) current, searching for X-rays emission due to an atomic transition forbidden by Pauli exclusion principle, from the L shell to the K shell of copper when the K shell is already occupied by two electrons. VIP set an upper limit on the Pauli exclusion principle violation probability 1/2β 2 –29. The goal of the upgraded VIP-2 experiment, presently in data taking at Gran Sasso Laboratories, is to improve this limit by two orders of magnitude. The VIP-2 experimental apparatus, in which the Silicon Drift Detectors have the key role of X-ray detectors, and preliminary results are presented.

Published
2020

29. K - Pp bound system at J-PARC

Author

Eberhard Widmann, M. Iliescu, Haruhiko Outa, Hiroaki Ohnishi, K. Inoue, Yasuyuki Matsuda, Hiroyuki Noumi, Takashi Ishikawa, Makoto Tokuda, Masahiko Iwasaki, H. Tatsuno, Akihisa Toyoda, Toshimitsu Yamazaki, D. Tomono, M. Sato, Paul Kienle, Ken Suzuki, Michael Cargnelli, Kotaro Shirotori, Florin Sirghi, Hiroyuki Fujioka, Atsushi Sakaguchi, G. Beer, Oton Vazquez Doce, Shun Enomoto, Shinji Okada, Yue Ma, Hyoungchan Bhang, Mario Bragadireanu, Paul Buehler, K. Kato, Alessandro Scordo, T. Hashimoto, H. Kou, O. Morra, Johann Marton, Catalina Curceanu, Johannes Zmeskal, Y. Kato, Carolina Berucci, S. Kawasaki, Takatoshi Suzuki, Seonho Choi, L. Busso, S. Ajimura, Tomofumi Nagae, Masami Iio, Fuminori Sakuma, Y. Ishiguro, Qi Zhang, Y. Sada, Tomokazu Fukuda, Y. Fujiwara, Yutaka Mizoi, Kyo Tsukada, C. Guaraldo, Ryugo S. Hayano, H. Asano, Toshihiko Hiraiwa, Shigeru Ishimoto, Koki Kanno, Shoji Suzuki, Kristian Piscicchia, T. Yamaga, Kiyoshi Tanida, Hexi Shi, Diana Sirghi, Michiko Sekimoto, and Kenta Itahashi

Subjects
Physics, Binding energy, Bound state, J-PARC, State (functional analysis), Atomic physics
Abstract

The K¯NN bound system, symbolically denoted as “K−pp”, is the simplest K¯-nuclear bound system which has been widely discussed as a consequence of the strongly attractive K¯N interaction in I = 0 channels. Many theoretical works have pointed out the existence of the “K−pp” bound system, but the calculated properties such as the binding energy and the width spread out due to the uncertainty of the K¯N interaction below the K¯+N mass threshold. Experimentally, there are several reports on observation of a “K−pp” candidate with the binding energy of around 100 MeV, however, no definitive evidence was available so far. At J-PARC, we conducted a experimental search for the “K−pp” bound system using K− + 3He reaction at 1.0 GeV/c where the “K−pp” is expected to be directly produced via the (K−, n) reaction. We finally observed a bound state below the K− +p+p mass threshold in the Λpn final state, which can be interpreted as the “K− pp” bound state. The possible existence of the “K− pp” state is discussed from both aspects of production and decay.

Published
2020

30. Testing the Pauli Exclusion Principle in the Cosmic Silence

Author

Florin Sirghi, Michael Cargnelli, Matthias Laubenstein, M. Bazzi, M. Iliescu, J.-P. Egger, Hexi Shi, Alberto Clozza, L. De Paolis, Diana Sirghi, Carlo Fiorini, C. Guaraldo, Mario Bragadireanu, Marco Miliucci, O. Vazquez Doce, Edoardo Milotti, J. Zmeskal, Sergio Bartalucci, Laura Sperandio, D. Pietreanu, Alessandro Scordo, K. Piscicchia, S. Bertolucci, A. Pichler, Catalina Curceanu, R. Del Grande, A. Amirkhani, Johann Marton, Piscicchia, K., Pichler, A., Amirkhani, A., Bartalucci, S., Bertolucci, S., Bazzi, M., Bragadireanu, M., Cargnelli, M., Clozza, A., Del Grande, R., De Paolis, L., Egger, J., Fiorini, C., Guaraldo, C., Iliescu, M., Laubenstein, M., Marton, J., Miliucci, M., Milotti, E., Pietreanu, D., Scordo, A., Shi, H., Sirghi, D. L., Sirghi, F., Sperandio, L., Vazquez Doce, O., Zmeskal, J., and Curceanu, C.

Subjects
Physics, COSMIC cancer database, 010308 nuclear & particles physics, quantum mechanics, General Physics and Astronomy, experimental tests, quantum mechanic, X-ray detectors, 01 natural sciences, Silence, symbols.namesake, Theoretical physics, Pauli exclusion principle, experimental test, 0103 physical sciences, symbols
Abstract

The VIP Collaboration is performing high precision tests of the Pauli Exclusion Principle for electrons in the extremely low cosmic background environment of the Underground Gran Sasso Laboratories of INFN (Italy). The experimental technique consists in introducing a DC current in a copper conductor, searching for Kα PEP-forbidden atomic transitions when the K shell is already occupied by two electrons. VIP set an upper limit on the PEP-violation probability (½) x β^2 < 4.7 × 10^−29. The aim of the upgraded VIP-2 experiment is to improve this result at least by two orders of magnitude. The improved experimental setup and the results of a preliminary data analysis, corresponding to the the first run of the VIP-2 data taking (2016–2017), will be presented.

Published
2020
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31. Kaonic deuterium precision measurement at DA$\Phi$NE : the SIDDHARTA-2 experiment

Author

A. Baniahmad, Florin Sirghi, L. De Paolis, Hexi Shi, M. Iwasaki, Carolina Berucci, R. Del Grande, P. Levi Sandri, Johann Zmeskal, M. Bragadireanu, D. Sirghi, Magdalena Skurzok, J. Marton, Catalina Curceanu, G. Bellotti, F. Ghio, Szymon Niedźwiecki, E. Widmann, A. Spallone, H. Tatsuno, O. Vazquez Doce, D. Bosnar, Laura Fabbietti, M. Cargnelli, Alessandro Scordo, Michał Silarski, K. Piscicchia, A. Amirkhani, D. Pietreanu, Shinji Okada, Paweł Moskal, Mohamad Bazzi, A. Dawood Butt, Carlo Fiorini, C. Guaraldo, M. Iliescu, and M. Miliucci

Subjects
Physics, Nuclear physics, Deuterium, Scattering, law, Isospin, Nuclear Theory, Extrapolation, Zero-point energy, Collider, Spectroscopy, Nuclear Experiment, law.invention
Abstract

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(formula presented)NE collider of LNF-INFN in 2019–2020.

Published
2020

32. VIP-2 - Testing spin-statistics for electrons with high sensitivity

Author

D. Pietreanu, S. Bertolucci, Michael Cargnelli, Florin Sirghi, J.-P. Egger, O. Vazquez-Doce, Matthias Laubenstein, A. Pichler, Johann Zmeskal, Johann Marton, Diana Sirghi, A. Amirkahani, Sergio Bartalucci, M. Bazzi, Hexi Shi, K. Piscicchia, Edoardo Milotti, Alberto Clozza, C. Guaraldo, L. De Paolis, M. Iliescu, Laura Sperandio, Alessandro Scordo, Catalina Curceanu, Mario Bragadireanu, Marton, J., Amirkahani, A., Bartalucci, S., Bazzi, M., Bertolucci, S., Bragadireanu, M., Cargnelli, M., Clozza, A., Curceanu, C., De Paolis, L., Egger, J. -P., Guaraldo, C., Iliescu, M., Laubenstein, M., Milotti, E., Pichler, A., Pietreanu, D., Piscicchia, K., Scordo, A., Shi, H., Sirghi, D., Sirghi, F., Sperandio, L., Vazquez-Doce, O., and Zmeskal, J.

Subjects
Paper, Physics, History, Pauli principle, quantum mechanics, experimental test, quantum mechanic, Electron, 01 natural sciences, ddc, 010305 fluids & plasmas, Computer Science Applications, Education, 0103 physical sciences, Sensitivity (control systems), Atomic physics, 010306 general physics, Spin-½
Abstract

The VIP-2 (VIolation of the Pauli Exclusion Principle) experiment conducted at the Gran Sasso underground laboratory (LNGS) of INFN is searching for possible tiny violations of standard quantum mechanics in copper atoms with extremely high sensitivity. We investigate atomic transitions with precision X-ray spectroscopy in order to test the Pauli Exclusion Principle (PEP) and therefore the spin-statistics theorem. We present the experimental method for the search for "anomalous" (i.e. Pauli-forbidden) X-ray transitions in copper atoms, produced by "new" electrons, which could have a tiny probability to undergo a Pauli-forbidden transition to the 1s ground state already occupied by two electrons. We describe the VIP-2 experimental setup and its recent optimisations. Presently VIP-2 is taking data at LNGS. The goal of VIP-2 is to test PEP for electrons with unprecedented accuracy, down to a limit in the probability that PEP is violated at the level of 10-31 (and using a more elaborate analysis even 10-40). We present current experimental results.

Published
2020
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33. Characterization of the SIDDHARTA-2 luminosity monitor

Author

C. Guaraldo, Kristian Piscicchia, F. Sgaramella, A. Spallone, M. Miliucci, A. Baniahmad, Florin Sirghi, Carlo Fiorini, Michał Silarski, Massimiliano Bazzi, M. Cargnelli, Alberto Clozza, Magdalena Skurzok, M. Bragadireanu, M. Iliescu, M. Tüchler, Damir Bosnar, L. De Paolis, O. Vazquez Doce, J. Marton, Catalina Curceanu, L. Fabbietti, Marco Carminati, Sz. Niedzwiecki, Paweł Moskal, Hexi Shi, Alessandro Scordo, R. Del Grande, D. L. Sirghi, P. Levi Sandri, Johann Zmeskal, and Motoki Iwasaki

Subjects
gas and liquid scintillators), Physics - Instrumentation and Detectors, Meson, Physics::Instrumentation and Detectors, FOS: Physical sciences, Scintillator, 01 natural sciences, Timing detectors, Particle detector, 030218 nuclear medicine & medical imaging, law.invention, Nuclear physics, 03 medical and health sciences, Particle identification methods, 0302 clinical medicine, Data acquisition, law, 0103 physical sciences, Nuclear Experiment (nucl-ex), Collider, Nuclear Experiment, Instrumentation, SIDDHARTA-2 luminosity monitor, Mathematical Physics, Physics, Luminosity (scattering theory), 010308 nuclear & particles physics, Instrumentation and Detectors (physics.ins-det), scintillation and light emission processes (solid, Scintillators, Scintillation counter, Measuring instrument, Physics::Accelerator Physics, High Energy Physics::Experiment
Abstract

A luminosity monitor, based on plastic scintillator detectors, has been developed for the SIDDHARTA-2 experiment aiming to perform high precision measurements of kaonic atoms and was installed in 2020 on the DAFNE $e^+e^-$ collider at LNF (Laboratori Nazionali di Frascati, INFN). The main goal of this system is to provide the~instantaneous and integrated luminosity of the DAFNE facility by measuring the rate of $K^+K^-$ correlated pairs emitted by the phi meson decay. This task requires an accurate timing of the DAQ signals, as well as timing resolution below 1ns, in order to disentangle the $K^\pm$ signals from the background minimum ionizing particles (MIPs) produced during the $e^+e^-$ collisions at DAFNE. In this paper the luminosity monitor concept as well as its laboratory characterization and the first results inside DAFNE are presented., Published in JINST

Published
2020

34. High precision test of the Pauli Exclusion Principle for electrons

Author

Hexi Shi, M. Veith, R. Del Grande, L. De Paolis, Matthias Laubenstein, Florin Sirghi, J.-P. Egger, Sergio Bartalucci, O. Vazquez Doce, C. Guaraldo, Marco Miliucci, Edoardo Milotti, Mario Bragadireanu, D. Laura Sirghi, Dorel Pietreanu, K. Piscicchia, T. Mazzocchi, Alberto Clozza, Michael Cargnelli, Laura Sperandio, Johann Zmeskal, A. Amirkhani, Sergio Bertolucci, Johann Marton, M. Bazzi, A. Pichler, Catalina Curceanu, M. Iliescu, Alessandro Scordo, and Carlo Fiorini

Subjects
Physics, Paper, History, COSMIC cancer database, 010308 nuclear & particles physics, Electron shell, Electron, Copper conductor, engineering.material, 01 natural sciences, Computer Science Applications, Education, L-shell, ddc, Nuclear physics, symbols.namesake, Pauli exclusion principle, 0103 physical sciences, symbols, engineering, Limit (mathematics), 010306 general physics, Order of magnitude
Abstract

The VIP collaboration is performing high precision tests of the Pauli Exclusion Principle for electrons in the extremely low cosmic background environment of the Underground Gran Sasso Laboratories of INFN (Italy). The experimental technique consists in introducing a DC current in a copper conductor, searching for the X-rays emission due to a PEP-forbidden atomic transition from the L shell to the K shell of copper when the K shell is already occupied by two electrons. VIP set un upper limit on the PEP violation probability 1 2 β 2 < 4.7 × 10 − 29 , the aim of the upgraded VIP-2 experiment is to improve this result by two orders of magnitude at least. The experimental setup and the results of preliminary data analyses will be presented.

Published
2019

35. Kaonic Atom Experiments at J-PARC

Author

Johann Marton, K. Itahashi, James P. Hays-Wehle, Daniel S. Swetz, O. Morra, M. Iliescu, H. Asano, L. Busso, M. Bazzi, Tomokazu Fukuda, Shinji Okada, C. Guaraldo, Diana Sirghi, T. Yamazaki, Joseph W. Fowler, Toshihiko Hiraiwa, A. Takamine, M. Sekimoto, Tomofumi Nagae, Michael Cargnelli, Shigeru Ishimoto, Kotaro Shirotori, Ken Suzuki, Shun Enomoto, Shinya Yamada, M. Sato, D. A. Bennett, D. Tomono, Yuto Ichinohe, R. Hayakawa, Atsushi Sakaguchi, A. D. Butt, O. Vazquez Doce, Gene C. Hilton, Carl D. Reintsema, Fredrik Gustafsson, Yutaka Mizoi, Hiroyuki Fujioka, Takaya Ohashi, Carolina Berucci, Y. Sada, Yuichiro Ezoe, Ryugo S. Hayano, H. Tatsuno, Malcolm Durkin, C. Han, Johann Zmeskal, M. Iwasaki, T. Murakami, T. Yamaga, Kiyoshi Tanida, Galen C. O'Neil, Kyo Tsukada, T. Hayashi, Y. Iizawa, Hexi Shi, Daniel Schmidt, S. Kawasaki, Fuminori Sakuma, T. Nishi, Yoshitaka Ishisaki, S. Aikawa, C. Trippl, Alessandro Scordo, T. Hashimoto, K. Piscicchia, Seonho Choi, Yasuhiro H. Matsuda, Akihiro Toyoda, Hirofumi Noda, Catalina Curceanu, D. Bosnar, Joel N. Ullom, K. Nunomura, P. Bhler, T. Suzuki, Mario Bragadireanu, Florin Sirghi, William B. Doriese, T. Akaishi, E. Widmann, S. Ajimura, Masami Iio, Yue Ma, Hiroaki Ohnishi, Haruhiko Outa, K. Inoue, Hiroyuki Noumi, G. A. Beer, S. Y. Suzuki, and Jens Uhlig

Subjects
Nuclear physics, Physics, Light nucleus, Particle properties, Deuterium, Atom, J-PARC, Charged particle
Published
2019

36. Results of \(\bar{K}NN\) Search via the (K−, n) Reaction at J-PARC

Author

Hexi Shi, Paul Kienle, L. Busso, Florin Sirghi, Michael Cargnelli, Y. Sada, Shinji Okada, Oton Vazquez Doce, Carolina Berucci, Catalina Curceanu, Ryugo S. Hayano, C. Guaraldo, Shun Enomoto, Johann Zmeskal, Johann Marton, Takashi Ishikawa, Kotaro Shirotori, O. Morra, H. Tatsuno, T. Yamaga, S. Kawasaki, Toshimitsu Yamazaki, Paul Buehler, Kiyoshi Tanida, Ken Suzuki, Y. Ishiguro, D. Tomono, K. Kato, Yue Ma, H. Asano, Shigeru Ishimoto, Y. Kato, Atsushi Sakaguchi, Mario Bragadireanu, Toshihiko Hiraiwa, M. Iliescu, M. Sato, Yutaka Mizoi, Eberhard Widmann, Hiroyuki Fujioka, Michiko Sekimoto, Takatoshi Suzuki, Kyo Tsukada, Yasuyuki Matsuda, Kristian Piscicchia, Hyeongchan Bhang, Tomokazu Fukuda, S. Ajimura, Masahiko Iwasaki, Haruhiko Outa, Masami Iio, Y. Fujiwara, Makoto Tokuda, Hiroaki Ohnishi, Tomofumi Nagae, Hiroyuki Noumi, Seonho Choi, Qi Zhang, Akihisa Toyoda, Fuminori Sakuma, G. Beer, Alessandro Scordo, T. Hashimoto, K. Inoue, Kenta Itahashi, Diana Sirghi, Hirofumi Kou, Koki Kanno, and Shoji Suzuki

Subjects
Physics, Bar (music), Analytical chemistry, J-PARC
Published
2019

37. Λ(1405) Spectroscopy via the In-flight d(K−, n) Reaction at the J-PARC K1.8BR

Author

Florin Sirghi, Kotaro Shirotori, T. Akaishi, Michiko Sekimoto, Tomofumi Nagae, Takatoshi Suzuki, M. Iliescu, Hiroyuki Fujioka, Eberhard Widmann, S. Ajimura, Masami Iio, Hiroaki Ohnishi, Johann Zmeskal, Paul Buehler, K. Kato, Masahiko Iwasaki, Yasuyuki Matsuda, Kyo Tsukada, Johann Marton, Kristian Piscicchia, Toshimitsu Yamazaki, Shun Enomoto, Shinji Okada, G. Beer, H. Asano, C. Guaraldo, Paul Kienle, S. Kawasaki, Shu Aikawa, Yutaka Mizoi, Tomokazu Fukuda, Makoto Tokuda, Takashi Ishikawa, Toshihiko Hiraiwa, Y. Kato, Alessandro Scordo, T. Hashimoto, Shigeru Ishimoto, O. Morra, K. Inoue, Yue Ma, Ryugo S. Hayano, Y. Fujiwara, Haruhiko Outa, Catalina Curceanu, Zhadyra Omar, M. Iwai, Fuminori Sakuma, Kenta Itahashi, Yusuke Komatsu, Akihisa Toyoda, Hiroyuki Noumi, A. O. Tokiyasu, D. Tomono, Diana Sirghi, Atsushi Sakaguchi, Hirofumi Kou, Y. Ishiguro, H. Yim, L. Busso, Y. Sada, Shoji Suzuki, Koki Kanno, M. Sato, H. Tatsuno, Michael Cargnelli, Ken Suzuki, Mario Bragadireanu, Hexi Shi, T. Yamaga, Kiyoshi Tanida, Seonho Choi, Qi Zhang, Carolina Berruci, and Oton Vazquez Doce

Subjects
Physics, Analytical chemistry, J-PARC, Spectroscopy
Published
2019

38. DANAE - a new experiment for direct dark matter detection with DEPFET silicon detectors

Author

Alexander Baehr, H. Kluck, Jelena Ninkovic, Jochen Schieck, Johannes Treis, and Hexi Shi

Subjects
Nuclear physics, Physics, Silicon, chemistry, Physics::Instrumentation and Detectors, Scattering, Ionization, Detector, Dark matter, chemistry.chemical_element, Electron, Inelastic scattering, Standard Model
Abstract

In the direct search for signals from the scattering of a dark matter particle candidate off standard model particles, the region of dark matter candidates with masses below 1 GeV/c$^2$ remains mainly unexplored. We are preparing an experiment using a low-noise silicon detector as the sensitive target to search for signals from the inelastic scattering between a sub-GeV/c$^2$ dark matter candidate and a bound electron in silicon. When such a scattering happens, energy deposit inside the silicon sensor of a few eV in the form of ionization can be identified using the low noise silicon detector applying the non-destructive repetitive readout method, which can be used to achieve an ENC of 0.2 $e^{−}$ rms and below.

Published
2019

39. High Precision Test of the Pauli Exclusion Principle for Electrons

Author

Matthias Laubenstein, M. Iliescu, Laura Sperandio, Johann Marton, Hexi Shi, Sergio Bartalucci, Michael Cargnelli, A. Pichler, Marco Miliucci, J. P. Egger, Dorel Pietreanu, Alberto Clozza, Diana Sirghi, Carlo Fiorini, Kristian Piscicchia, Florin Sirghi, Sergio Bertolucci, Raffaele Del Grande, Massimiliano Bazzi, Mario Bragadireanu, Alessandro Scordo, Luca De Paolis, Oton Vazquez Doce, Johann Zmeskal, Catalina Curceanu, A. Amirkhani, C. Guaraldo, Edoardo Milotti, Piscicchia, Kristian, Amirkhani, Aidin, Bartalucci, Sergio, Bertolucci, Sergio, Bazzi, Massimiliano, Bragadireanu, Mario, Cargnelli, Michael, Clozza, Alberto, Curceanu, Catalina, Del Grande, Raffaele, De Paolis, Luca, Egger, Jean-Pierre, Fiorini, Carlo, Guaraldo, Carlo, Iliescu, Mihail, Laubenstein, Matthia, Marton, Johann, Miliucci, Marco, Milotti, Edoardo, Pichler, Andrea, Pietreanu, Dorel, Scordo, Alessandro, Shi, Hexi, Sirghi, Diana Laura, Sirghi, Florin, Sperandio, Laura, Doce, Oton Vazquez, and Zmeskal, Johann

Subjects
quantum foundation, Particle physics, 02 engineering and technology, Electron, 01 natural sciences, 010305 fluids & plasmas, Pauli exclusion principle, symbols.namesake, Radiation emission, 0103 physical sciences, 0202 electrical engineering, electronic engineering, information engineering, Limit (mathematics), Physics, Condensed Matter Physics, lcsh:QC1-999, quantum foundations, Electronic, Optical and Magnetic Materials, underground experiment, symbols, X-ray spectroscopy, 020201 artificial intelligence & image processing, Continuous current, Order of magnitude, lcsh:Physics
Abstract

The VIP-2 experiment aims to perform high precision tests of the Pauli Exclusion Principle for electrons. The method consists in circulating a continuous current in a copper strip, searching for the X radiation emission due to a prohibited transition (from the 2p level to the 1s level of copper when this is already occupied by two electrons). VIP already set the best limit on the PEP violation probability for electrons 1 2 &beta, 2 &lt, 4.7 &times, 10 &minus, 29 , the goal of the upgraded VIP-2 (VIolation of the Pauli Exclusion Principle-2) experiment is to improve this result of two orders of magnitude at least. The experimental apparatus and the results of the analysis of a first set of collected data will be presented.

Published
2019
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40. VIP2 in LNGS - Testing the Pauli Exclusion Principle for electrons with high sensitivity

Author

Johann Zmeskal, C. Guaraldo, Matthias Laubenstein, Sergio Bartalucci, Johann Marton, Kristian Piscicchia, A. Pichler, Hexi Shi, A. Amirkhani, M. Milucci, Carlo Fiorini, M. Iliescu, J.-P. Egger, M. Bragadireanu, Alberto Clozza, Michael Cargnelli, Massimiliano Bazzi, L. De Paolis, O. Vazquez-Doce, D. L. Sirghi, Dorel Pietreanu, Sergio Bertolucci, Alessandro Scordo, R. Del Grande, Edoardo Milotti, Laura Sperandio, Catalina Curceanu, Florin Sirghi, Marton, J., Pichler, A., Amirkhani, A., Bartalucci, S., Bazzi, M., Bertolucci, S., Bragadireanu, M., Cargnelli, M., Clozza, A., Curceanu, C., Del Grande, R., De Paolis, L., Egger, J. -P., Fiorini, C., Guaraldo, C., Iliescu, M., Laubenstein, M., Milotti, E., Milucci, M., Pietreanu, D., Piscicchia, K., Scordo, A., Shi, H., Sirghi, D., Sirghi, F., Sperandio, L., Vazquez-Doce, O., and Zmeskal, J.

Subjects
Paper, History, Particle physics, Physics - Instrumentation and Detectors, FOS: Physical sciences, quantum mechanic, Electron, 01 natural sciences, spin-statistics, Education, X-ray, symbols.namesake, Pauli exclusion principle, 0103 physical sciences, X-rays, Sensitivity (control systems), Limit (mathematics), 010306 general physics, Spectroscopy, fundamental symmetrie, Physics, Quantum Physics, 010308 nuclear & particles physics, quantum mechanics, Instrumentation and Detectors (physics.ins-det), Computer Science Applications, ddc, atomic transitions, fundamental symmetries, Underground laboratory, symbols, atomic transition, High Energy Physics::Experiment, Quantum Physics (quant-ph), Ground state
Abstract

The VIP2 (VIolation of the Pauli Exclusion Principle) experiment at the Gran Sasso underground laboratory (LNGS) is searching for possible violations of standard quantum mechanics predictions in atoms at very high sensitivity. We investigate atomic transitions with precision X-ray spectroscopy in order to test the Pauli Exclusion Principle (PEP) and therefore the related spin-statistics theorem. We will present our experimental method for the search for "anomalous" (i.e. Pauli-forbidden) X-ray transitions in copper atoms, produced by "new" electrons, which could have tiny probability to undergo Pauli-forbidden transition to the ground state already occupied by two electrons. We will describe the VIP2 experimental setup, which is taking data at LNGS presently. The goal of VIP2 is to test the PEP for electrons with unprecedented accuracy, down to a limit in the probability that PEP is violated at the level of 10$^{-31}$. We will present current experimental results and discuss implications of a possible violation., Comment: Proceedings of DICE 2018 Conference

Published
2019

41. Low-energy $K^{−}$ hadronic interactions with light nuclei by AMADEUS

Author

M. Iwasaki, Paolo Levi Sandri, L. Fabbietti, A. Spallone, Magdalena Skurzok, Hexi Shi, Gabriele Belotti, C. Guaraldo, Michał Silarski, Florin Sirghi, Ryugo S. Hayano, Carlo Fiorini, Johann Zmeskal, Dorel Pietreanu, Catalina Curceanu, Raffaele Del Grande, Kristian Piscicchia, Eberhard Widmann, F. Ghio, D. L. Sirghi, J. Marton, Oton Vazquez Doce, Massimiliano Bazzi, S. Wycech, Damir Bosnar, M. Cargnelli, M. Iliescu, Shinji Okada, Alessandro Scordo, Angels Ramos, Paweł Moskal, Mario Bragadireanu, Luca De Paolis, and Marco Miliucci

Subjects
Physics, Nuclear physics, Light nucleus, Low energy, strangeness, Hadron, antikaon interactions in nuclear matter
Published
2019

42. Experiments with low-energy kaons at the DAΦNE Collider

Author

G. Bellotti, Hexi Shi, Laura Fabbietti, O. Vazquez Doce, Magdalena Skurzok, J. Marton, Marco Miliucci, H. Tatsuno, A. Spallone, Carolina Berucci, P. Levi Sandri, D. Sirghi, A. Baniahmad, M. Iwasaki, M. Bragadireanu, Johann Zmeskal, Catalina Curceanu, D. Bosnar, C. Guaraldo, K. Piscicchia, E. Widmann, Florin Sirghi, A. Amirkhani, D. Pietreanu, Michał Silarski, Mohamad Bazzi, A. Dawood Butt, R. Del Grande, Carlo Fiorini, Shinji Okada, Paweł Moskal, M. Cargnelli, F. Ghio, M. Iliescu, and Szymon Niedźwiecki

Subjects
Physics, History, Interaction point, Scattering, Kaonic hydrogen, Nuclear Theory, Strong interaction, Binding energy, Computer Science Applications, Education, law.invention, Nuclear physics, Deuterium, law, Physics::Accelerator Physics, High Energy Physics::Experiment, Physics::Atomic Physics, Nuclear Experiment, Spectroscopy, Collider
Abstract

The investigations of light kaonic atoms offer the unique opportunity to perform experiments equivalent to scattering at vanishing relative energies, being their atomic binding energies in the keV range. This allows the determination of the hadron-nucleus interaction at threshold without the need of an extrapolation to zero relative energy. The energy shift and broadening of the lowest-lying states of such atoms, induced by the kaon-nucleus strong interaction, can be determined with high precision from atomic X-ray spectroscopy. The lightest atomic systems, kaonic hydrogen and kaonic deuterium, deliver the isospin-dependent kaon-nucleon scattering lengths. The most precise kaonic hydrogen measurement to date, together with an exploratory measurement of kaonic deuterium, were carried out by the SIDDHARTA collaboration at the DAΦNE electron-positron collider of LNF-INFN. The measurement of kaonic deuterium will be realized in the near future by SIDDHARTA-2, a major upgrade of SIDDHARTA. A correlated study of the kaon-nuclei interaction at momenta below 130 MeV/c is carried out by the AMADEUS collaboration, using the KLOE detector and dedicated targets inserted near the collider interaction point. In this paper an overview of the main results obtained by SIDDHARTA together with the future plans, the SIDDHARTA-2 experiment and with the preliminary results of the study of charged antikaons interacting with nuclei by the AMADEUS collaboration, are shown. (Less)

Published
2019

43. Kaonic atoms measurement at DA$\Phi$NE : SIDDHARTA and SIDDHARTA-2

Author

Carolina Berucci, Hexi Shi, F. Ghio, R. Del Grande, G. Bellotti, Magdalena Skurzok, J. Marton, Marco Miliucci, Florin Sirghi, C. Guaraldo, Michał Silarski, Shinji Okada, P. Levi Sandri, Laura Fabbietti, Johann Zmeskal, M. Bragadireanu, M. Iliescu, O. Vazquez Doce, D. Sirghi, Szymon Niedźwiecki, H. Tatsuno, M. Cargnelli, Paweł Moskal, A. Spallone, E. Widmann, M. Iwasaki, D. Pietreanu, A. Baniahmad, L. De Paolis, D. Bosnar, Mohamad Bazzi, A. Dawood Butt, K. Piscicchia, Carlo Fiorini, A. Amirkhani, and Catalina Curceanu

Subjects
Physics, Range (particle radiation), Scattering, Kaonic hydrogen, Nuclear Theory, Strong interaction, Binding energy, Nuclear physics, Deuterium, Energy shift, Physics::Accelerator Physics, Physics::Atomic Physics, Nuclear Experiment, Spectroscopy
Abstract

Light kaonic atoms studies provide the unique opportunity to perform experiments equivalent to scattering at threshold, being their atomic binding energies in the keV range. High precision atomic X-rays spectroscopy ensures that the energy shift and broadening of the lowest-lying states of the kaonic atoms, induced by the strong interaction between the kaon and nucleus, can be detected. Kaonic hydrogen and kaonic deuterium are the lightest atomic systems and their study deliver the isospin-dependent kaon-nucleon scattering lengths. The SIDDHARTA collaboration was able to perform the most precise kaonic hydrogen measurement to date, together with an exploratory measurement of kaonic deuterium. The measurement of the kaonic deuterium will be realized in the near future by a major upgrade of SIDDHARTA: SIDDHARTA-2. In this paper an overview of the main results obtained by SIDDHARTA together with the future plans are presented.

Published
2019

44. Λp correlated production from low energy K−12C interactions by AMADEUS

Author

C. Guaraldo, D. Pietreanu, S. Wycech, A. Spallone, M. Bazzi, A. Ramos, Michael Cargnelli, Alessandro Scordo, L. De Paolis, Florin Sirghi, D. Bosnar, M. Iwasaki, G. Belloti, Marco Miliucci, Magdalena Skurzok, M. Iliescu, E. Widmann, Catalina Curceanu, Diana Sirghi, Hexi Shi, Carlo Fiorini, Shinji Okada, Paweł Moskal, A. M. Bragadireanu, A. D. Butt, O. Vazquez Doce, Michał Silarski, J. Zmeskal, R. Del Grande, Ryugo S. Hayano, P. Levi Sandri, Laura Fabbietti, Johann Marton, K. Piscicchia, and F. Ghio

Subjects
Physics, Luminosity (scattering theory), 010308 nuclear & particles physics, QC1-999, 01 natural sciences, NATURAL SCIENCES. Physics, law.invention, PRIRODNE ZNANOSTI. Fizika, Nuclear physics, Low energy, law, 0103 physical sciences, 010306 general physics, Nucleon, Collider, Absorption (electromagnetic radiation)
Abstract

The main steps for the analysis of the Λp correlated production in low-energy K− captures on Carbon nuclei, performed by the AMADEUS collaboration, are presented. The goal is to perform the first comprehensive study of the K− absorption on two, three and four nucleons, exploiting the lowmomentum K−s (pK ~ 127 MeV/c) produced at the DAΦNE collider, and to measure the low-energy cross sections and branching ratios of the K− multinucleon absorption processes in both the Λp and Σ0p channels. An integrated luminosity of 1.74 fb−1 collected during the KLOE 2004/2005 data campaign is analysed by reconstructing the Λp final state.

Published
2019

45. Kaonic atoms measurements at the DA$\Phi$NE Collider

Author

Florin Sirghi, Laura Fabbietti, Catalina Curceanu, H. Tatsuno, P. Levi Sandri, Johann Zmeskal, A. Baniahmad, D. Bosnar, G. Bellotti, L. De Paolis, K. Piscicchia, A. Amirkhani, Marco Miliucci, Shinji Okada, Alessandro Scordo, A. Spallone, D. Sirghi, M. Iwasaki, Paweł Moskal, E. Widmann, M. Cargnelli, C. Guaraldo, Hexi Shi, Mohamad Bazzi, A. Dawood Butt, R. Del Grande, D. Pietreanu, Carlo Fiorini, F. Ghio, Szymon Niedźwiecki, Magdalena Skurzok, J. Marton, M. Iliescu, O. Vazquez Doce, M. Bragadireanu, Carolina Berucci, and Michał Silarski

Subjects
Quantum chromodynamics, Physics, Kaonic hydrogen, Scattering, Strong interaction, Nuclear Theory, Strangeness, law.invention, Nuclear physics, Deuterium, law, Isospin, Physics::Accelerator Physics, Physics::Atomic Physics, Collider, Nuclear Experiment
Abstract

The DAΦNE 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. (Less)

Published
2019

46. Spectroscopy of kaonic atoms at DAFNE and J-PARC

Author

K. Piscicchia, Laura Fabbietti, Shinji Okada, Hexi Shi, P. Levi Sandri, M. Iliescu, Johann Zmeskal, A. Baniahmad, Carolina Berucci, Szymon Niedźwiecki, Catalina Curceanu, D. Bosnar, Paweł Moskal, Marco Miliucci, G. Bellotti, O. Vazquez Doce, A. Spallone, M. Iwasaki, M. Bragadireanu, Michał Silarski, D. Sirghi, Mohamad Bazzi, F. Ghio, A. Amirkhan, A. Dawood Butt, E. Widmann, R. Del Grande, M. Cargnelli, D. Pietreanu, C. Guaraldo, Carlo Fiorini, H. Tatsuno, Magdalena Skurzok, J. Marton, and Florin Sirghi

Subjects
Physics, 010308 nuclear & particles physics, Kaonic hydrogen, QC1-999, Strong interaction, Nuclear Theory, Strangeness, 01 natural sciences, NATURAL SCIENCES. Physics, Nuclear physics, PRIRODNE ZNANOSTI. Fizika, Deuterium, Isospin, 0103 physical sciences, Atom, Physics::Accelerator Physics, Physics::Atomic Physics, 010306 general physics, Spectroscopy, Nucleon, Nuclear Experiment
Abstract

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.

Published
2019

47. Spectroscopic study of the Λ(1405) resonance via the d(K−, n) reaction at J-PARC

Author

H. Tatsuno, S. Aikawa, D. Tomono, K. Itahashi, S. Kawasaki, K. Piscicchia, Florin Sirghi, Makoto Tokuda, H. Asano, Michael Cargnelli, L. Busso, Alessandro Scordo, T. Hashimoto, Atsushi Sakaguchi, Yasuhiro H. Matsuda, J. Marton, Paul Buehler, K. Kato, H. Yim, Hexi Shi, Shinji Okada, Toshihiko Hiraiwa, Hiroyuki Fujioka, T. Ishikawa, Y. Sada, O. Vazquez Doce, T. Suzuki, Johann Zmeskal, T. Yamazaki, G. A. Beer, D. Sirghi, Paul Kienle, A. O. Tokiyasu, Yue Ma, M. Sekimoto, Tomofumi Nagae, S. Y. Suzuki, Shigeru Ishimoto, Shun Enomoto, Y. Ishiguro, C. Guaraldo, Koki Kanno, Fuminori Sakuma, O. Morra, Ken Suzuki, Y. Kato, H. Kou, E. Widmann, K. Tsukada, T. Akaishi, M. Sato, K. Inoue, H. Outa, M. Iliescu, Hiroyuki Noumi, M. Iwai, Z. Omar, Ryugo S. Hayano, Y. Komatsu, Kotaro Shirotori, Q. Zhang, M. Iwasaki, S. Choi, T. Yamaga, Kiyoshi Tanida, M. Bragadireanu, Tomokazu Fukuda, Y. Fujiwara, Catalina Curceanu, Yutaka Mizoi, Akihiro Toyoda, S. Ajimura, Masami Iio, Hiroaki Ohnishi, and Carolina Berucci

Subjects
Nuclear physics, Momentum, Physics, Deuterium, Scattering, Isospin, Spectrum (functional analysis), Hyperon, J-PARC, Resonance (particle physics)
Abstract

The structure of the Λ(1405) hyperon is an important and long-standing issue related to the K-nucleus interaction. The J-PARC E31 experiment has been performed to investigate the Λ(1405) spectrum shape. Because it is hard to form the Λ(1405) directly by a KN scattering in free space, E31 uses the d(K-, n) reaction with an incident kaon momentum of 1 GeV/c. We will identify three final states - ς-π+, ς+π-, ς0π0-so that the isospin structure of hyperon resonance states produced can be decomposed. The first physics run of the E31 experiment was performed in 2016. To enhance the statistics of the data set, we have performed the second physics run in the beginning of 2018. During the second run of E31, around 3.9×1010 kaons impacted on the deuteron target.

Published
2019

48. Silicon drift detectors system for high-precision light kaonic atoms spectroscopy

Author

Hexi Shi, Diana Sirghi, A. Spallone, Alessandro Scordo, M. Cargnelli, A. Baniahmad, Fabrizio Napolitano, K. Piscicchia, Magdalena Skurzok, L. De Paolis, C. Guaraldo, O. Vazquez Doce, Carlo Fiorini, Florin Sirghi, R. Del Grande, Marco Carminati, A. Amirkhani, J. Marton, M. Iliescu, Catalina Curceanu, Marco Miliucci, Mario Bragadireanu, D. Bosnar, P. Levi Sandri, Johann Zmeskal, M. Tüchler, M. Iwasaki, M. Bazzi, F. Sgaramella, Szymon Niedźwiecki, Paweł Moskal, Alberto Clozza, and Michał Silarski

Subjects
X-ray spectroscopy, Materials science, Silicon drift detector, Silicon, 010308 nuclear & particles physics, business.industry, Applied Mathematics, Detector, chemistry.chemical_element, x-ray spectroscopy, 01 natural sciences, chemistry, silicon drift detector, 0103 physical sciences, Optoelectronics, kaonic atoms, 010306 general physics, business, Spectroscopy, Instrumentation, Engineering (miscellaneous)
Published
2021

49. High Sensitivity Quantum Mechanics Tests in the Cosmic Silence

Author

M. Iliescu, Matthias Laubenstein, Florin Sirghi, K. Piscicchia, Johann Marton, Carlo Fiorini, J.-P. Egger, D. Laura Sirghi, Sergio Bartalucci, C. Guaraldo, A. Amirkhani, Hexi Shi, Alessandro Scordo, O. Vazquez Doce, M. Bazzi, Alberto Clozza, J. Zmeskal, S. Bertolucci, A. Pichler, L. De Paolis, Marco Miliucci, Catalina Curceanu, Edoardo Milotti, Laura Sperandio, D. Pietreanu, Michael Cargnelli, Mario Bragadireanu, and R. Del Grande

Subjects
Silence, Physics, COSMIC cancer database, Quantum mechanics, General Physics and Astronomy, Sensitivity (control systems)
Published
2021

50. Low-energy Kaon Nucleon/Nuclei Studies at DA\(\Phi \)NE: the SIDDHARTA-2 Experiment

Author

Hexi Shi, A. Baniahmad, Shinji Okada, C. Guaraldo, L. De Paolis, Florin Sirghi, Alberto Clozza, K. Piscicchia, Catalina Curceanu, Paweł Moskal, Diana Sirghi, Magdalena Skurzok, A. Amirkhani, Szymon Niedźwiecki, Michael Cargnelli, Johann Marton, R. Del Grande, Marco Miliucci, O. Vazquez Doce, Carlo Fiorini, D. Bosnar, Laura Fabbietti, M. Iwasaki, A. Spallone, Marco Carminati, M. Iliescu, J. Zmeskal, M. Tüchler, Mario Bragadireanu, Alessandro Scordo, M. Bazzi, P. Levi Sandri, and Michał Silarski

Subjects
Physics, Nuclear physics, Low energy, General Physics and Astronomy, Nucleon
Published
2021

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