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1. Experimental test of Non-Commutative Quantum Gravity by VIP-2 Lead

Author

Piscicchia, Kristian, Addazi, Andrea, Marciano, Antonino, Bazzi, Massimiliano, Cargnelli, Michael, Clozza, Alberto, De Paolis, Luca, Del Grande, Raffaele, Guaraldo, Carlo, Iliescu, Mihail Antoniu, Laubenstein, Matthias, Marton, Johann, Miliucci, Marco, Napolitano, Fabrizio, Porcelli, Alessio, Scordo, Alessandro, Sirghi, Diana Laura, Sirghi, Florin, Doce, Oton Vazquez, Zmeskal, Johann, and Curceanu, Catalina

Subjects
High Energy Physics - Theory, General Relativity and Quantum Cosmology, High Energy Physics - Experiment, High Energy Physics - Phenomenology
Abstract

Pauli Exclusion Principle (PEP) violations induced by space-time non-commutativity, a class of universality for several models of Quantum Gravity, are investigated by the VIP-2 Lead experiment at the Gran Sasso underground National Laboratory of INFN. The VIP-2 Lead experimental bound on the non-commutative space-time scale $\Lambda$ excludes $\theta$-Poincar\'e far above the Planck scale for non vanishing ``electric-like" components of $\theta_{\mu \nu}$, and up to $6.9 \cdot 10^{-2}$ Planck scales if they are null. Therefore, this new bound represents the tightest one so far provided by atomic transitions tests. This result strongly motivates high sensitivity underground X-ray measurements as critical tests of Quantum Gravity and of the very microscopic space-time structure., Comment: 13 pages, 2 figures. arXiv admin note: substantial text overlap with arXiv:2209.00074

Published
2022
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2. Strongest atomic physics bounds on Non-Commutative Quantum Gravity Models

Author

Piscicchia, Kristian, Addazi, Andrea, Marciano, Antonino, Bazzi, Massimiliano, Cargnelli, Michael, Clozza, Alberto, De Paolis, Luca, Del Grande, Raffaele, Guaraldo, Carlo, Iliescu, Mihail Antoniu, Laubenstein, Matthias, Marton, Johann, Miliucci, Marco, Napolitano, Fabrizio, Porcelli, Alessio, Scordo, Alessandro, Sirghi, Diana Laura, Sirghi, Florin, Doce, Oton Vazquez, Zmeskal, Johann, and Curceanu, Catalina

Subjects
High Energy Physics - Theory, General Relativity and Quantum Cosmology, High Energy Physics - Phenomenology
Abstract

Investigations of possible violations of the Pauli Exclusion Principle represent critical tests of the microscopic space-time structure and properties. Space-time non-commutativity provides a class of universality for several Quantum Gravity models. In this context the VIP-2 Lead experiment sets the strongest bounds, searching for Pauli Exclusion Principle violating atomic-transitions in lead, excluding the $\theta$-Poincar\'e Non Commutative Quantum Gravity models far above the Planck scale for non-vanishing $\theta_{\mu \nu}$ ``electric-like'' components, and up to $6.9 \cdot 10^{-2}$ Planck scales if $\theta_{0i} = 0$., Comment: 7 pages, 2 figures

Published
2022
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3. VIP-2 with modulated current: pathfinder for enhanced Pauli exclusion principle violation studies

Author

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

Published
2024
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4. Silicon Drift Detectors spectroscopic response during the SIDDHARTA-2 Kaonic Helium run at the DA{\Phi}NE collider

Author

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

Subjects
Physics - Instrumentation and Detectors
Abstract

A large-area Silicon Drift Detectors (SDDs) system has been developed by the SIDDHARTA2 collaboration for high precision light kaonic atoms X-ray spectroscopy at the DA{\Phi}NE 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 to perform high precision light kaonic atoms spectroscopy measurements in the high background of the DA{\Phi}NE collider. This work presents the spectroscopic response of the SDDs system during the kaonic helium first exotic atoms run of SIDDHARTA-2, preliminary to the kaonic deuterium data taking campaign, Comment: submitted to Condensed Matter (MDPI) for special issue "High Precision X-ray Measurements 2021"

Published
2021

5. Measurement of KN scattering below the KN mass threshold

Author

Noumi Hiroyuki, Inoue Kentaro, Kawasaki Shingo, Aikawa Shuu, Ajimura Shuhei, Akaishi Takaya, Asano Hidemitsu, Beer George, Berucci Carolina, Bragadireau Mario, Buehler Paul Alois, Busso Luigi, Cargnelli Michael, Choi Seonho, Curceanu Catalina, Enomoto Shun, Fujioka Hiroyuki, Fujiwara Yuya, Fukuda Tomokazu, Guaraldo Carlo, Hashimoto Tadashi, Hayano Ryugo S., Hiraiwa Toshihiko, Iio Masami, Iliescu Mihai, Ishiguro Yusuke, Ishimoto Shigeru, Ishikawa Takashi, Ithashi Kenta, Iwai Massaki, Iwasaki Masahiko, Kanno Koki, Kato Kazuma, kato Yuko, Kienle Paul, Komatsu Yusuke, Kou Hiroshi, Ma Yue, Marton Johann, Matsuda Yasuyuki, MIzoi Yutaka, Morra Ombretta, Murayama Rie, Nagae To-mofumi, Ohnishi Hiroaki, Okada Shinji, Omar Zhadyra, Outa Haruhiko, Piscicchia Kristian, Sada Yuta, Sakaguchi Atsushi, Sakuma Fuminori, Sato Masaharu, Scordo Alessadro, Sekimoto Michiko, Shi Hexi, Shirotori Kotaro, Sirghi Diana, Sirghi Florin, Suzuki Ken, Suzuki Shoji, Suzuki Takatoshi, Tanida Kiyoshi, Tatsuno Hideyuki, Tokiyasu Atsushi O., Tokuda Makoto, Tomono Dai, Toyoda Akihisa, Tsukada Kyo, Vazquez-Doce Oton, Widmann Eberhard, Yamaga Takumi, Yamazaki Toshimitsu, Yim Heejoong, Zhang Qi, and Zmeskal Johannes

Subjects
Physics, QC1-999
Abstract

Abstract. We measured πE invariant mass spectra below and above the K¯N mass threshold in the K−d → NπE reaction in order to study the K¯N interaction and the Λ(1405) resonance. This reaction can be described by the two-step process: (i) K¯N1 → K¯N followed by (ii) K¯N2 → πΣ, where N1 and N2 are nucleons bound in the deuteron. We deduced the S -wave scattering amplitude of K¯N →K¯N in the framework of the K¯N πΣ coupled channel so as to reproduce the observed πΣ spectra in the I = 0 channel. We found a resonance pole at 1417.7-7.4+6.0 (fitting error)-1.0+1.1 (systematic error) - i[26.9-7.9+6.0 (fitting error)-2.0+1.7 (systematic error)]MeV/c2.

Published
2024
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6. Optimization of a BEGe Detector Setup for Testing Quantum Foundations in the Underground LNGS Laboratory

Author

Piscicchia, Kristian, primary, Clozza, Alberto, additional, Sirghi, Diana Laura, additional, Bazzi, Massimiliano, additional, Bortolotti, Nicola, additional, Bragadireanu, Mario, additional, Cargnelli, Michael, additional, De Paolis, Luca, additional, Del Grande, Raffaele, additional, Guaraldo, Carlo, additional, Iliescu, Mihail, additional, Laubenstein, Matthias, additional, Manti, Simone, additional, Marton, Johann, additional, Miliucci, Marco, additional, Napolitano, Fabrizio, additional, Porcelli, Alessio, additional, Scordo, Alessandro, additional, Sgaramella, Francesco, additional, Sirghi, Florin, additional, Tomassini, Sandro, additional, Doce, Oton Vazquez, additional, Zmeskal, Johann, additional, and Curceanu, Catalina, additional

Published
2024
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7. Characterization of the SIDDHARTA-2 Setup via the Kaonic Helium Measurement

Author

Sgaramella, Francesco, primary, Clozza, Francesco, additional, Abbene, Leonardo, additional, Artibani, Francesco, additional, Bazzi, Massimiliano, additional, Borghi, Giacomo, additional, Bragadireanu, Mario, additional, Buttacavoli, Antonino, additional, Cargnelli, Michael, additional, Carminati, Marco, additional, Clozza, Alberto, additional, Deda, Griseld, additional, Del Grande, Raffaele, additional, De Paolis, Luca, additional, Dulski, Kamil, additional, Fiorini, Carlo, additional, Guaraldo, Carlo, additional, Iliescu, Mihail, additional, Iwasaki, Masahiko, additional, Khreptak, Aleksander, additional, Manti, Simone, additional, Marton, Johann, additional, Miliucci, Marco, additional, Moskal, Paweł, additional, Napolitano, Fabrizio, additional, Niedźwiecki, Szymon, additional, Ohnishi, Hiroaki, additional, Piscicchia, Kristian, additional, Principato, Fabio, additional, Scordo, Alessandro, additional, Silarski, Michal, additional, Sirghi, Diana, additional, Sirghi, Florin, additional, Skurzok, Magdalena, additional, Spallone, Antonio, additional, Toho, Kairo, additional, Tüchler, Marlene, additional, Zmeskal, Johann, additional, and Curceanu, Catalina, additional

Published
2024
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8. Low-energy Antikaon Interaction with Nuclei: The AMADEUS Challenge

Author

Marton, Johann, Bazzi, Massimilliano, Bellotti, Giovanni, Berucci, Carolina, Bosnar, Dimitri, Bragadireanu, Mario, Curceanu, Catalina, Clozza, Alberto, Cargnelli, Michael, Butt, Aslan, Del Grande, Raffaele, Fabbietti, Laura, Fiorini, Carlo, Ghio, Francesco, Guaraldo, Carlo, Iliescu, Mihai, Sandri, Paolo Levi, Pietreanu, Dorel, Piscicchia, Kristian, Vidal, Antonio Romero, Scordo, Alessandro, Shi, Hexi, Sirghi, Diana, Sirghi, Florin, Tucakovic, Ivana, Doce, Oton Vazquez, Widmann, Eberhard, and Zmeskal, Johann

Subjects
Nuclear Experiment
Abstract

The low-energy strong interaction of antikaons (K-) with nuclei has many facets and rep- resents a lively and challenging research field. It is interconnected to the peculiar role of strangeness, since the strange quark is rather light, but still much heavier than the up and down quarks. Thus, when strangeness is involved one has to deal with spontaneous and explicit symmetry breaking in QCD. It is well known that the antikaon interaction with nucleons is attractive, but how strong ? Is the interaction strong enough to bind nucleons to form kaonic nuclei and, if so, what are the properties (binding energy, decay width)? There are controversial indications for such bound states and new results are expected to come soon. The existence of antikaon mediated bound states might have important consequences since it would open the possibility for the formation of cold baryonic matter of high density which might have a severe impact in astrophysics for the understanding of the composi- tion of compact (neutron) stars. New experimental opportunities could be provided by the AMADEUS experiment at the DA?NE electron-positron collider at LNF-INFN (Frascati, Italy). Pre-AMADEUS studies on the antikaon interaction with nuclei are carried out by analysis of data collected by KLOE in till 2005 and in special data runs using a carbon target insert. Studies for the dedicated AMADEUS detector setup taking advantage of the low-energy antikaons from Phi-meson decay delivered by DAFNE are in progress. Some re- sults obtained so far and the perspectives of the AMADEUS experiment are presented and discussed., Comment: 6 pages, 3 figures, Proceedings LEAP2016

Published
2016

9. Studies of low-energy K−-nucleus/nuclei interactions with light nuclei by AMADEUS

Author

Skurzok Magdalena, Bazzi Massimiliano, Bragadireanu Mario, Bosnar Damir, Cargnelli Michael, Clozza Alberto, De Paolis Luca, Del Grande Raffaele, Fabbietti Laura, Guaraldo Carlo, Iliescu Mihai, Levi Sandri Paolo, Marton Johann, Miliucci Marco, Moskal Paweł, Piscicchia Kristian, Ramos Angels, Scordo Alessandro, Silarski Michał, Sirghi Diana Laura, Sirghi Florin, Spallone Antonio, Vazquez Doce Oton, Wycech Sławomir, Zmeskal Johann, and Curceanu Catalina

Subjects
Physics, QC1-999
Abstract

The AMADEUS Collaboration aims to provide unique experimental constraints to the antikaon-nucleon strong interaction in the regime of nonperturbative QCD. The K− nuclear captures, both at-rest and in-flight, are studied using the monochromatic low-momentum kaon beam (pK ∼ 120 MeV/c) produced at the DAΦNE collider, interacting with the KLOE detector materials. The studies are performed by reconstructing the hyperon-pion and hyperonnucleon final states. In this work a brief description of AMADEUS results for Λπ− and Λp final states is presented.

Published
2023
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10. Search for the deeply bound $K^-pp$ state from the semi-inclusive forward-neutron spectrum in the in-flight $K^-$ reaction on helium-3

Author

Hashimoto, Tadashi, Ajimura, Shuhei, Beer, George, Bhang, Hyoungchan, Bragadireanu, Mario, Busso, Luigi, Cargnelli, Michael, Choi, Seonho, Curceanu, Catalina, Enomoto, Shun, Faso, Diego, Fujioka, Hiroyuki, Fujiwara, Yuya, Fukuda, Tomokazu, Guaraldo, Carlo, Hayano, Ryugo S., Hiraiwa, Toshihiko, Iio, Masami, Iliescu, Mihai, Inoue, Kentaro, Ishiguro, Yosuke, Ishikawa, Takashi, Ishimoto, Shigeru, Itahashi, Kenta, Iwai, Masaaki, Iwasaki, Masahiko, Kato, Yuko, Kawasaki, Shingo, Kienle, Paul, Kou, Hiroshi, Ma, Yue, Marton, Johann, Matsuda, Yasuyuki, Mizoi, Yutaka, Morra, Ombretta, Nagae, Tomofumi, Noumi, Hiroyuki, Ohnishi, Hiroaki, Okada, Shinji, Outa, Haruhiko, Piscicchia, Kristian, Lener, Marco Poli, Vidal, Antonio Romero, Sada, Yuta, Sakaguchi, Atsushi, Sakuma, Fuminori, Sato, Masaharu, Scordo, Alessandro, Sekimoto, Michiko, Shi, Hexi, Sirghi, Diana, Sirghi, Florin, Suzuki, Shoji, Suzuki, Takatoshi, Tanida, Kiyoshi, Tatsuno, Hideyuki, Tokuda, Makoto, Tomono, Dai, Toyoda, Akihisa, Tsukada, Kyo, Doce, Oton Vazquez, Widmann, Eberhard, Yamaga, Takumi, Yamazaki, Toshimitsu, Yim, Heejoong, Zhang, Qi, and Zmeskal, Johann

Subjects
Nuclear Experiment
Abstract

An experiment to search for the $K^-pp$ bound state was performed via the in-flight $^3$He($K^-,n)$ reaction using 5.3 $\times$ $10^9$ kaons at 1 GeV/$c$ at the J-PARC hadron experimental facility. In the semi-inclusive neutron missing-mass spectrum at $\theta_{n}^{lab}=0^\circ$, no significant peak was observed in the region corresponding to $K^-pp$ binding energy larger than 80 MeV, where a bump structure has been reported in the $\Lambda p$ final state in different reactions. Assuming the state to be isotropically decaying into $\Lambda p$, mass-dependent upper limits on the production cross section were determined to be 30--180, 70--250, and 100--270 $\mu$b/sr, for the natural widths of 20, 60, and 100 MeV, respectively, at 95\% confidence level., Comment: 12 pages, 6 figures

Published
2014
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11. Measurement of K N scattering below the K N mass threshold.

Author

Noumi, Hiroyuki, Inoue, Kentaro, Kawasaki, Shingo, Aikawa, Shuu, Ajimura, Shuhei, Akaishi, Takaya, Asano, Hidemitsu, Beer, George, Berucci, Carolina, Bragadireau, Mario, Buehler, Paul Alois, Busso, Luigi, Cargnelli, Michael, Choi, Seonho, Curceanu, Catalina, Enomoto, Shun, Fujioka, Hiroyuki, Fujiwara, Yuya, Fukuda, Tomokazu, and Guaraldo, Carlo

Subjects
MASS spectrometry, THRESHOLD energy, RESONANCE, OSCILLATIONS, DEUTERON sources
Abstract

Abstract. We measured πE invariant mass spectra below and above the K¯N mass threshold in the K−d → NπE reaction in order to study the K¯N interaction and the Λ(1405) resonance. This reaction can be described by the two-step process: (i) K¯N1 → K¯N followed by (ii) K¯N2 → πΣ, where N1 and N2 are nucleons bound in the deuteron. We deduced the S -wave scattering amplitude of K¯N →K¯N in the framework of the K¯N πΣ coupled channel so as to reproduce the observed πΣ spectra in the I = 0 channel. We found a resonance pole at 1417.7-7.4+6.0 (fitting error)-1.0+1.1 (systematic error) - i[26.9-7.9+6.0 (fitting error)-2.0+1.7 (systematic error)]MeV/c2. [ABSTRACT FROM AUTHOR]

Published
2024
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12. The K1.8BR spectrometer system at J-PARC

Author

Agari, Keizo, Ajimura, Shuhei, Beer, George, Bhang, Hyoungchan, Bragadireanu, Mario, Buehler, Paul, Busso, Luigi, Cargnelli, Michael, Choi, Seonho, Curceanu, Catalina, Enomoto, Shun, Faso, Diego, Fujioka, Hiroyuki, Fujiwara, Yuya, Fukuda, Tomokazu, Guaraldo, Carlo, Hashimoto, Tadashi, Hayano, Ryugo S., Hiraiwa, Toshihiko, Hirose, Erina, Ieiri, Masaharu, Iio, Masami, Iliescu, Mihai, Inoue, Kentaro, Ishiguro, Yosuke, Ishikawa, Takashi, Ishimoto, Shigeru, Ishiwatari, Tomoichi, Itahashi, Kenta, Iwai, Masaaki, Iwasaki, Masahiko, Kakiguchi, Yutaka, Katoh, Yohji, Kawasaki, Shingo, Kienle, Paul, Kou, Hiroshi, Ma, Yue, Marton, Johann, Matsuda, Yasuyuki, Minakawa, Michifumi, Mizoi, Yutaka, Morra, Ombretta, Muto, Ryotaro, Nagae, Tomofumi, Naruki, Megumi, Noumi, Hiroyuki, Ohnishi, Hiroaki, Okada, Shinji, Outa, Haruhiko, Piscicchia, Kristian, Lener, Marco Poli, Vidal, Antonio Romero, Sada, Yuta, Sakaguchi, Atsushi, Sakuma, Fuminori, Sato, Masaharu, Sato, Yoshinori, Sawada, Shin'ya, Scordo, Alessandro, Sekimoto, Michiko, Shi, Hexi, Shirakabe, Yoshihisa, Sirghi, Diana, Sirghi, Florin, Suzuki, Ken, Suzuki, Shoji, Suzuki, Takatoshi, Suzuki, Yoshihiro, Takahashi, Hitoshi, Tanaka, Kazuhiro, Tanaka, Nobuaki, Tatsuno, Hideyuki, Tokuda, Makoto, Toyoda, Akihisa, Tomono, Dai, Tsukada, Kyo, Doce, Oton Vazquez, Watanabe, Hiroaki, Widmann, Eberhard, Wunschek, Barbara K., Yamanoi, Yutaka, Yamazaki, Toshimitsu, Yim, Heejoong, and Zmeskal, Johann

Subjects
Physics - Instrumentation and Detectors, Nuclear Experiment
Abstract

A new spectrometer system was designed and constructed at the secondary beam line K1.8BR in the hadron hall of J-PARC to investigate $\bar K N$ interactions and $\bar K$-nuclear bound systems. The spectrometer consists of a high precision beam line spectrometer, a liquid $^3$He/$^4$He/D$_2$ target system, a Cylindrical Detector System that surrounds the target to detect the decay particles from the target region, and a neutron time-of-flight counter array located $\sim$15 m downstream from the target position. Details of the design, construction, and performance of the detector components are described., Comment: 33 pages, 25 figures

Published
2012
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13. Potentialities of CdZnTe Quasi-Hemispherical Detectors for Hard X-ray Spectroscopy of Kaonic Atoms at the DAΦNE Collider

Author

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

Published
2023
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14. A review of the low-energy K−-nucleus/nuclei interactions with light nuclei AMADEUS investigations

Author

Skurzok, Magdalena, primary, Cargnelli, Michael, additional, del Grande, Raffaele, additional, Fabbietti, Laura, additional, Guaraldo, Carlo, additional, Marton, Johann, additional, Moskal, Paweł, additional, Piscicchia, Kristian, additional, Scordo, Alessandro, additional, Silarski, Michał, additional, Sirghi, Diana Laura, additional, Vazquez Doce, Oton, additional, Zmeskal, Johann, additional, Wycech, Sławomir, additional, Branchini, Paolo, additional, Czerwiński, Eryk, additional, Kang, Xiaolin, additional, Mandaglio, Giuseppe, additional, Martini, Matteo, additional, Selce, Andrea, additional, and Curceanu, Catalina, additional

Published
2023
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15. Comparison of 3ΛH/4ΛH production cross-section via (K−, π0) reaction at J-PARC

Author

Akaishi Takaya, Asano Hidemitsu, Chen Xurong, Clozza Alberto, Curceanu Catalina, Del Grande Raffaele, Guaraldo Carlo, Han Chengdong, Hashimoto Tadashi, Iliescu Mihai, Inoue Kentaro, Ishimoto Shigeru, Itahashi Kenta, Iwasaki Masahiko, Ma Yue, Murayama Rie, Miliucci Marco, Noumi Hiroyuki, Ohnishi Hiroyuki, Okada Shinji, Outa Haruhiko, Piscicchia Kristian, Sada Yuta, Sakaguchi Atsushi, Sakuma Fuminori, Sato Masaharu, Scordo Alessandro, Sirghi Diana, Sirghi Florin, Shirotori Kotaro, Suzuki Shoji, Tanida Kiyoshi, Toda Taiga, Tokuda Megumu, Tsuruta Masato, Yamaga Takumi, Yuan Xiaohua, Zhang Hongqiang, Zhang Pengming, and Zhang Yapeng

Subjects
Physics, QC1-999
Abstract

Recent heavy-ion collision experiments reported a surprisingly short lifetime for the hypertriton, which has been recognized as the hypertriton lifetime puzzle. Our J-PARC E73 experiment contributes to solve this puzzle with an independent experimental method by employing 3He(K−, π0) 3ΛH reaction. In this contribution, we will demonstrate our capability to provide 3ΛH binding energy information by deriving the production cross section ratio, σ3ΛH/σ4ΛH. The production cross section data for 3ΛH and 4ΛH are already available as the pilot run of E73 experiment and data analysis is in progress.

Published
2022
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16. Summary of the K−pp bound-state observation in E15 and future prospects

Author

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

Subjects
Physics, QC1-999
Abstract

The possible existence of deeply-bound $\bar K$K¯-nuclear bound states, kaonic nuclei, has been widely discussed as products of the strongly attractive $\bar K$K¯N interaction in I = 0 channels. Investigations of those exotic states will provide us unique information of the $\bar K$K¯N interaction below the threshold, which is still not fully understood so far. Recently, we observed the simplest kaonic nuclei, $\bar K$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 $\bar K$K¯N (Λ(1405)) to $\bar K$K¯NNNN. We will measure the $\bar K$K¯NNN (A = 3) system at the new experiment approved as J-PARC E80, as a first step toward a comprehensive study.

Published
2022
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17. Analysis methods used and planned for VIP-2

Author

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

Subjects
Physics, QC1-999
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

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

Subjects
Physics, QC1-999
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
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19. Search for a remnant violation of the Pauli exclusion principle in a Roman lead target

Author

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

Published
2020
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20. Underground Tests of Quantum Mechanics by the VIP Collaboration at Gran Sasso

Author

Napolitano, Fabrizio, primary, Addazi, Andrea, additional, Bassi, Angelo, additional, Bazzi, Massimiliano, additional, Bragadireanu, Mario, additional, Cargnelli, Michael, additional, Clozza, Alberto, additional, De Paolis, Luca, additional, Del Grande, Raffaele, additional, Derakhshani, Maaneli, additional, Donadi, Sandro, additional, Fiorini, Carlo, additional, Guaraldo, Carlo, additional, Iliescu, Mihail, additional, Laubenstein, Matthias, additional, Manti, Simone, additional, Marcianò, Antonino, additional, Marton, Johann, additional, Miliucci, Marco, additional, Milotti, Edoardo, additional, Piscicchia, Kristian, additional, Porcelli, Alessio, additional, Scordo, Alessandro, additional, Sgaramella, Francesco, additional, Sirghi, Diana Laura, additional, Sirghi, Florin, additional, Doce, Oton Vazquez, additional, Zmeskal, Johann, additional, and Curceanu, Catalina, additional

Published
2023
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21. A Novel Approach to Parameter Determination of the Continuous Spontaneous Localization Collapse Model

Author

Piscicchia, Kristian, primary, Porcelli, Alessio, additional, Bassi, Angelo, additional, Bazzi, Massimiliano, additional, Bragadireanu, Mario, additional, Cargnelli, Michael, additional, Clozza, Alberto, additional, De Paolis, Luca, additional, Del Grande, Raffaele, additional, Derakhshani, Maaneli, additional, Lajos, Diósi, additional, Donadi, Sandro, additional, Guaraldo, Carlo, additional, Iliescu, Mihai, additional, Laubenstein, Matthias, additional, Manti, Simone, additional, Marton, Johann, additional, Miliucci, Marco, additional, Napolitano, Fabrizio, additional, Scordo, Alessandro, additional, Sgaramella, Francesco, additional, Sirghi, Diana Laura, additional, Sirghi, Florin, additional, Vazquez Doce, Oton, additional, Zmeskal, Johann, additional, and Curceanu, Catalina, additional

Published
2023
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22. First Experimental Survey of a Whole Class of Non-Commutative Quantum Gravity Models in the VIP-2 Lead Underground Experiment.

Author

Piscicchia, Kristian, Marcianò, Antonino, Addazi, Andrea, Sirghi, Diana Laura, Bazzi, Massimiliano, Bortolotti, Nicola, Bragadireanu, Mario, Cargnelli, Michael, Clozza, Alberto, De Paolis, Luca, Del Grande, Raffaele, Guaraldo, Carlo, Iliescu, Mihail, Laubenstein, Matthias, Manti, Simone, Marton, Johann, Miliucci, Marco, Napolitano, Fabrizio, Nola, Federico, and Porcelli, Alessio

Subjects
QUANTUM gravity, PLANCK scale, SPECIAL relativity (Physics), ATOMIC transitions, ATOMIC number
Abstract

This study is aimed to set severe constraints on a whole class of non-commutative space-times scenarios as a class of universality for several quantum gravity models. To this end, slight violations of the Pauli exclusion principle—predicted by these models—are investigated by searching for Pauli forbidden K α and K β transitions in lead. The selection of a high atomic number target material allows to test the energy scale of the space-time non-commutativity emergence at high atomic transition energies. As a consequence, the measurement is very sensitive to high orders in the power series expansion of the Pauli violation probability, which allows to set the first constraint to the "triply special relativity" model proposed by Kowalski-Glikman and Smolin. The characteristic energy scale of the model is bound to Λ > 5.6 · 10 − 9 Planck scales. [ABSTRACT FROM AUTHOR]

Published
2023
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23. Studies of low-energy K−-nucleus/nuclei interactions with light nuclei by AMADEUS.

Author

Skurzok, Magdalena, Bazzi, Massimiliano, Bragadireanu, Mario, Bosnar, Damir, Cargnelli, Michael, Clozza, Alberto, De Paolis, Luca, Del Grande, Raffaele, Fabbietti, Laura, Guaraldo, Carlo, Iliescu, Mihai, Levi Sandri, Paolo, Marton, Johann, Miliucci, Marco, Moskal, Paweł, Piscicchia, Kristian, Ramos, Angels, Scordo, Alessandro, Silarski, Michał, and Sirghi, Diana Laura

Subjects
NEUTRON capture, NUCLEAR charge, NUCLEAR astrophysics, NUCLEOSYNTHESIS, NUCLEAR reactions
Abstract

The AMADEUS Collaboration aims to provide unique experimental constraints to the antikaon-nucleon strong interaction in the regime of nonperturbative QCD. The K− nuclear captures, both at-rest and in-flight, are studied using the monochromatic low-momentum kaon beam (pK ∼ 120 MeV/c) produced at the DAΦNE collider, interacting with the KLOE detector materials. The studies are performed by reconstructing the hyperon-pion and hyperonnucleon final states. In this work a brief description of AMADEUS results for Λπ− and Λp final states is presented. [ABSTRACT FROM AUTHOR]

Published
2023
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24. Testing the Pauli Exclusion Principle with the VIP-2 Experiment

Author

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

Published
2022
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25. Summary of theK−ppbound-state observation in E15 and future prospects

Author

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

Published
2022
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26. γ-ray high sensitivity tests of Collapse Models

Author

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

Published
2021
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27. Silicon Drift Detectors’ Spectroscopic Response during the SIDDHARTA-2 Kaonic Helium Run at the DAΦNE Collider

Author

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

Published
2021
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28. Summary of the K−pp bound-state observation in E15 and future prospects.

Author

Sakuma, Fuminori, Ajimura, Shuhei, Akaishi, Takaya, Asano, Hidemitsu, Bazzi, Massimiliano, Beer, George, Bhang, Hyoungchan, Bragadireanu, Mario, Buehler, Paul, Busso, Luigi, Cargnelli, Michael, Choi, Seonho, Clozza, Alberto, Curceanu, Catalina, Enomoto, Shun, Fujioka, Hiroyuki, Fujiwara, Yuya, Fukuda, Tomokazu, Guaraldo, Carlo, and Hashimoto, Tadashi

Subjects
BOUND states, KAONS, BINDING energy, NUCLEAR energy, NUCLEAR physics
Abstract

The possible existence of deeply-bound $\bar K$ K ¯ -nuclear bound states, kaonic nuclei, has been widely discussed as products of the strongly attractive $\bar K$ K ¯ N interaction in I = 0 channels. Investigations of those exotic states will provide us unique information of the $\bar K$ K ¯ N interaction below the threshold, which is still not fully understood so far. Recently, we observed the simplest kaonic nuclei, $\bar K$ 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 $\bar K$ K ¯ N (Λ(1405)) to $\bar K$ K ¯ NNNN. We will measure the $\bar K$ K ¯ NNN (A = 3) system at the new experiment approved as J-PARC E80, as a first step toward a comprehensive study. [ABSTRACT FROM AUTHOR]

Published
2022
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29. Search for Deeply Bound Kaonic Nuclear States with AMADEUS

Author

Skurzok Magdalena, Cargnelli Michael, Curceanu Catalina, Del Grande Raffaele, Fabbietti Laura, Guaraldo Carlo, Marton Johann, Moskal Pawel, Piscicchia Kristian, Scordo Alessandro, Silarski Michal, Sirghi Diana Laura, Tucakovic Ivana, Vazquez Doce Oton, Wycech Sławomir, Widmann Eberhard, and Zmeskal Johann

Subjects
Physics, QC1-999
Abstract

We briefly report on the search for Deeply Bound Kaonic Nuclear States with AMADEUS in the Σ0p channel following K− absorption on 12C and outline future perspectives for this work.

Published
2017
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30. Comparison of 3ΛH/4ΛH production cross-section via (K−, π0) reaction at J-PARC.

Author

Akaishi, Takaya, Asano, Hidemitsu, Chen, Xurong, Clozza, Alberto, Curceanu, Catalina, Del Grande, Raffaele, Guaraldo, Carlo, Han, Chengdong, Hashimoto, Tadashi, Iliescu, Mihai, Inoue, Kentaro, Ishimoto, Shigeru, Itahashi, Kenta, Iwasaki, Masahiko, Ma, Yue, Murayama, Rie, Miliucci, Marco, Noumi, Hiroyuki, Ohnishi, Hiroyuki, and Okada, Shinji

Subjects
NUCLEAR cross sections, HEAVY ion collisions, HYPERTRITONS, BINDING energy, NUCLEAR reactions
Abstract

Recent heavy-ion collision experiments reported a surprisingly short lifetime for the hypertriton, which has been recognized as the hypertriton lifetime puzzle. Our J-PARC E73 experiment contributes to solve this puzzle with an independent experimental method by employing 3He(K−, π0) 3ΛH reaction. In this contribution, we will demonstrate our capability to provide 3ΛH binding energy information by deriving the production cross section ratio, σ3ΛH/σ4ΛH. The production cross section data for 3ΛH and 4ΛH are already available as the pilot run of E73 experiment and data analysis is in progress. [ABSTRACT FROM AUTHOR]

Published
2022
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31. Kaonic Atoms to Investigate Global Symmetry Breaking

Author

Curceanu, Catalina, Guaraldo, Carlo, Sirghi, Diana, Amirkhani, Aidin, Baniahmad, Ata, Bazzi, Massimiliano, Bellotti, Giovanni, Bosnar, Damir, Bragadireanu, Mario, Cargnelli, Michael, Carminati, Marco, Clozza, Alberto, Paolis, Luca De, Grande, Raffaele Del, Fiorini, Carlo, Iliescu, Mihail, Iwasaki, Masahiko, King, Pietro, Sandri, Paolo Levi, Marton, Johann, Miliucci, Marco, Moskal, Paweł, Niedźwiecki, Szymon, Okada, Shinji, Piscicchia, Kristian, Scordo, Alessandro, Silarski, Michał, Sirghi, Florin, Skurzok, Magdalena, Spallone, Antonio, Tüchler, Marlene, Utica, Gianlorenzo, Doce, Oton Vazquez, and Zmeskal, Johann

Subjects
High Energy Physics::Lattice, lcsh:Mathematics, High Energy Physics::Phenomenology, Nuclear Theory, sigma terms, low-energy QCD, lcsh:QA1-939, NATURAL SCIENCES. Physics, PRIRODNE ZNANOSTI. Fizika, Computer Science::Programming Languages, Physics::Atomic Physics, Nuclear Experiment, kaonic atoms
Abstract

Kaonic atoms measure the antikaon-nucleus interaction at almost zero relative energy, allowing one to determine basic low-energy quantum chromodynamics (QCD) quantities, namely, the antikaon-nucleon ( K &macr, N) scattering lengths. The latter are important for extracting the sigma terms which are built on the symmetry breaking part of the Hamiltonian, thereby providing a measure of chiral and SU(3) symmetries breaking. After discussing the sigma terms and their relations to the kaonic atoms, we describe the most precise measurement in the literature of kaonic hydrogen, performed at LNF-INFN by the SIDDHARTA experiment. Kaonic deuterium is still to be measured, and two experiments are planned. The first, SIDDHARTA-2 at LNF-INFN was installed on DA &Phi, NE in spring 2019 and will collect data in 2020. The second, E57 at J-PARC, will become operative in 2021.

Published
2020

32. VIP-2 —High-Sensitivity Tests on the Pauli Exclusion Principle for Electrons

Author

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

Subjects
ddc
Published
2019

33. Semi-Analytical Monte Carlo Method to Simulate the Signal of the VIP-2 Experiment

Author

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

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

Author

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

Published
2020
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35. Studies of kaonic atoms at the DAΦNE collider: from SIDDHARTA to SIDDHARTA-2

Author

Sirghi, Diana, primary, Amirkhani, Aidin, additional, Baniahmad, Ata, additional, Bazzi, Massimiliano, additional, Bosnar, Damir, additional, Bragadireanu, Mario, additional, Carminati, Marco, additional, Cargnelli, Michael, additional, Clozza, Alberto, additional, Curceanu, Catalina, additional, De Paolis, Luca, additional, Del Grande, Raffaele, additional, Fabbietti, Laura, additional, Fiorini, Carlo, additional, Guaraldo, Carlo, additional, Iliescu, Mihail, additional, Iwasaki, Masaiko, additional, Sandri, Paolo Levi, additional, Marton, Johann, additional, Miliucci, Marco, additional, Moskal, Paweł, additional, Niedźwiecki, Szymon, additional, Okada, Shinji, additional, Pietreanu, Dorel, additional, Piscicchia, Kristian, additional, Scordo, Alessandro, additional, Silarski, Michal, additional, Sirghi, Florin, additional, Skurzok, Magdalena, additional, Spallone, Antonio, additional, Tüchler, Marlene, additional, Doce, Oton Vazquez, additional, Widmann, Eberhard, additional, and Zmeskal, Johann, additional

Published
2020
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36. Preface

Author

Ströher Hans, Kistryn Stanisław, and Guaraldo Carlo

Subjects
Physics, QC1-999
Published
2012
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37. High Precision Test of the Pauli Exclusion Principle for Electrons

Author

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

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

Author

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

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

Author

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

Published
2018
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40. Test of the Pauli Exclusion Principle in the VIP-2 Underground Experiment

Author

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

Published
2017
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42. Preface

Author

Guaraldo, Carlo, primary, Kistryn, Stanisław, additional, and Ströher, Hans, additional

Published
2012
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43. The K1.8BR spectrometer system at J-PARC

Author

Agari, Keizo, primary, Ajimura, Shuhei, additional, Beer, George, additional, Bhang, Hyoungchan, additional, Bragadireanu, Mario, additional, Buehler, Paul, additional, Busso, Luigi, additional, Cargnelli, Michael, additional, Choi, Seonho, additional, Curceanu, Catalina, additional, Enomoto, Shun, additional, Faso, Diego, additional, Fujioka, Hiroyuki, additional, Fujiwara, Yuya, additional, Fukuda, Tomokazu, additional, Guaraldo, Carlo, additional, Hashimoto, Tadashi, additional, Hayano, Ryugo S., additional, Hiraiwa, Toshihiko, additional, Hirose, Erina, additional, Ieiri, Masaharu, additional, Iio, Masami, additional, Iliescu, Mihai, additional, Inoue, Kentaro, additional, Ishiguro, Yosuke, additional, Ishikawa, Takashi, additional, Ishimoto, Shigeru, additional, Ishiwatari, Tomoichi, additional, Itahashi, Kenta, additional, Iwai, Masaaki, additional, Iwasaki, Masahiko, additional, Kakiguchi, Yutaka, additional, Katoh, Yohji, additional, Kawasaki, Shingo, additional, Kienle, Paul, additional, Kou, Hiroshi, additional, Ma, Yue, additional, Marton, Johann, additional, Matsuda, Yasuyuki, additional, Minakawa, Michifumi, additional, Mizoi, Yutaka, additional, Morra, Ombretta, additional, Muto, Ryotaro, additional, Nagae, Tomofumi, additional, Naruki, Megumi, additional, Noumi, Hiroyuki, additional, Ohnishi, Hiroaki, additional, Okada, Shinji, additional, Outa, Haruhiko, additional, Piscicchia, Kristian, additional, Lener, Marco Poli, additional, Vidal, Antonio Romero, additional, Sada, Yuta, additional, Sakaguchi, Atsushi, additional, Sakuma, Fuminori, additional, Sato, Masaharu, additional, Sato, Yoshinori, additional, Sawada, Shin'ya, additional, Scordo, Alessandro, additional, Sekimoto, Michiko, additional, Shi, Hexi, additional, Shirakabe, Yoshihisa, additional, Sirghi, Diana, additional, Sirghi, Florin, additional, Suzuki, Ken, additional, Suzuki, Shoji, additional, Suzuki, Takatoshi, additional, Suzuki, Yoshihiro, additional, Takahashi, Hitoshi, additional, Tanaka, Kazuhiro, additional, Tanaka, Nobuaki, additional, Tatsuno, Hideyuki, additional, Tokuda, Makoto, additional, Tomono, Dai, additional, Toyoda, Akihisa, additional, Tsukada, Kyo, additional, Doce, Oton Vazquez, additional, Watanabe, Hiroaki, additional, Widmann, Eberhard, additional, Wünschek, Barbara K., additional, Yamanoi, Yutaka, additional, Yamazaki, Toshimitsu, additional, Yim, Heejoong, additional, and Zmeskal, Johann, additional

Published
2012
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44. Semi-Analytical Monte Carlo Method to Simulate the Signal of the VIP-2 Experiment.

Author

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

Subjects
MONTE Carlo method, NUCLEAR physics, ELECTRON sources
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. [ABSTRACT FROM AUTHOR]

Published
2021
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45. Preface.

Author

Guaraldo, Carlo, Magiera, Andrzej, and Ströher, Hans

Subjects
*MESONS, *MESON detection
Abstract

A preface to the book "EPJ Web of Conferences" is presented.

Published
2014

46. 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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47. On the Importance of Electron Diffusion in a Bulk-Matter Test of the Pauli Exclusion Principle

Author

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

Subjects
General Physics and Astronomy, lcsh:Astrophysics, Electron, 01 natural sciences, Article, X-ray, Pauli exclusion principle, symbols.namesake, Quantum mechanics, lcsh:QB460-466, 0103 physical sciences, Atom, X-rays, lcsh:Science, 010306 general physics, Wave function, Physics, diffusion processes, fundamental symmetries, 010308 nuclear & particles physics, Thermal conduction, Random walk, lcsh:QC1-999, Symmetry (physics), symbols, lcsh:Q, diffusion processe, Ground state, lcsh:Physics
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

48. Test of the Pauli Exclusion Principle in the VIP-2 Underground Experiment

Author

Mario Bragadireanu, Diana Sirghi, Massimiliano Bazzi, Florin Sirghi, Johann Zmeskal, Marco Miliucci, Luca De Paolis, Sergio Di Matteo, C. Guaraldo, Edoardo Milotti, Oton Vazquez Doce, Kristian Piscicchia, Matthias Laubenstein, Dorel Pietreanu, Alberto Clozza, Eberhard Widmann, Laura Sperandio, Alessandro Scordo, M. Iliescu, Sergio Bertolucci, Johann Marton, Michael Cargnelli, A. Pichler, J. P. Egger, Hexi Shi, Sergio Bartalucci, Catalina Curceanu, Carolina Berucci, Laboratori Nazionali di Frascati dell’INFN, Istituto Nazionale di Fisica Nucleare (INFN), Institut de Physique de Rennes (IPR), Université de Rennes 1 (UR1), Université de Rennes (UNIV-RENNES)-Université de Rennes (UNIV-RENNES)-Centre National de la Recherche Scientifique (CNRS), Austrian Science Foundation (FWF) [P25529-N20], EU COST Action [CA15220], Centro Fermi (' Problemi aperti nella meccania quantistica' project), John Templeton Foundation [58158], Curceanu, Catalina, Shi, Hexi, Bartalucci, Sergio, Bertolucci, Sergio, Bazzi, Massimiliano, Berucci, Carolina, Bragadireanu, Mario, Cargnelli, Michael, Clozza, Alberto, De Paolis, Luca, Di Matteo, Sergio, Egger, Jean Pierre, Guaraldo, Carlo, Iliescu, Mihail, Marton, Johann, Laubenstein, Matthia, Milotti, Edoardo, Miliucci, Marco, Pichler, Andrea, Pietreanu, Dorel, Piscicchia, Kristian, Scordo, Alessandro, Sirghi, Diana, Sirghi, Florin, Sperandio, Laura, Vazquez Doce, Oton, Widmann, Eberhard, Zmeskal, Johann, and Université de Rennes (UR)-Centre National de la Recherche Scientifique (CNRS)

Subjects
quantum foundation, Particle physics, Physics - Instrumentation and Detectors, FOS: Physical sciences, General Physics and Astronomy, Electron, x-ray spectroscopy, 01 natural sciences, Pauli exclusion principle, symbols.namesake, silicon drift detector, 0103 physical sciences, Limit (mathematics), 010306 general physics, Quantum, Physics, [PHYS]Physics [physics], Quantum Physics, 010308 nuclear & particles physics, Instrumentation and Detectors (physics.ins-det), quantum foundations, X-ray spectroscopy, underground experiment, symbols, Orbit (control theory), Quantum Physics (quant-ph), Ground state, pauli exclusion principle
Abstract

The validity of the Pauli Exclusion Principle, a building block of Quantum Mechanics, is tested for electrons. The VIP (VIolation of Pauli exclusion principle) and its follow-up VIP-2 experiments at the Laboratori Nazionali del Gran Sasso search for x-rays from copper atomic transition that are prohibited by the Pauli Exclusion Principle. The candidate events, if they exist, originate from the transition of a $2p$ orbit electron to the ground state which is already occupied by two electrons. The present limit on the probability for Pauli Exclusion Principle violation for electrons set by the VIP experiment is 4.7 $\times$ 10 $^{-29}$. We report a first result from the VIP-2 experiment improving on the VIP limit, that solidifies the final goal to achieve a two order of magnitude gain in the long run., Comment: 6 pages, 3 figures. Submitted to journal Entropy special issue: "Quantum Information and Foundations", 2017

Published
2017

49. Hunting the 'impossible atoms' Pauli exclusion principle violation and spontaneous collapse of the wave function at test

Author

Hexi Shi, A. d'Uffizi, Johann Zmeskal, J.-P. Egger, Kristian Piscicchia, M. Iliescu, T. Ponta, Johann Marton, Angelo Bassi, T. Ishiwatari, C. Guaraldo, A. M. Bragadireanu, Oton Vazquez Doce, Alessandro Scordo, Diana Sirghi, Florin Sirghi, Sergio Bartalucci, Sandro Donadi, Matthias Laubenstein, Dorel Pietreanu, Carolina Berucci, Emanuele Sbardella, Alberto Clozza, Michael Cargnelli, Catalina Curceanu, Edoardo Milotti, Sergio Bertolucci, Laura Sperandio, Sergio Di Matteo, Curceanu, Catalina, Bartalucci, Sergio, Bassi, Angelo, Bertolucci, Sergio, Berucci, Carolina, Bragadireanu, Alexandru Mario, Cargnelli, Michael, Clozza, Alberto, Di Matteo, Sergio, Donadi, Sandro, D'Uffizi, Alessandro, Egger, J. P., Guaraldo, Carlo, Iliescu, Mihail, Ishiwatari, Tomoichi, Laubenstein, Matthia, Marton, Johann, Milotti, Edoardo, Pietreanu, Dorel, Piscicchia, Kristian, Ponta, Titu, Sbardella, Emanuele, Scordo, Alessandro, Shi, Hexi, Sirghi, Diana, Sirghi, Florin, Sperandio, Laura, Doce, Oton Vazquez, and Zmeskal, Johann

Subjects
Physics, Physics and Astronomy (miscellaneous), Basis (linear algebra), media_common.quotation_subject, collapse models, Electron, Universe, Spin-statistics, collapse models, X-rays, symbols.namesake, Pauli exclusion principle, Quantum mechanics, Atom, X-rays, symbols, Physics::Accelerator Physics, High Energy Physics::Experiment, Limit (mathematics), Experimental methods, Spin-statistics, Wave function collapse, media_common
Abstract

The Pauli exclusion principle (PEP) and, more generally, the spin-statistics connection, are at the very basis of our understanding of matter, life and Universe. The PEP spurs, presently, a lively debate on its possible limits, deeply rooted in the very foundations of Quantum Mechanics. It is, therefore, extremely important to test the limits of its validity. The Violation of the PEP (VIP) experiment established the best limit on the probability that PEP is violated by electrons, using the method of searching for PEP forbidden atomic transitions in copper. We describe the experimental method, the obtained results, and plans to go beyond the actual limit by upgrading the experimental apparatus. We discuss the possibility of using a similar experimental technique to search for X-rays as a signature of the spontaneous collapse of the wave function predicted by continuous spontaneous localization (CSL) theories.

Published
2014

50. Bayesian Model Selection for Electromagnetic Kaon Production on the Nucleon

Author

L. De Cruz, Pieter Vancraeyveld, Jan Ryckebusch, D. G. Ireland, Electronics and Informatics, Physics, Wrońska, Aleksandra, Kistryn, Stanisław, Machner, Hartmut, and Guaraldo, Carlo

Subjects
model selection, Nuclear and High Energy Physics, Particle physics, POLARIZATION, Nuclear Theory, Regge phenomenology, Bayesian inference, Bayesian probability, FOS: Physical sciences, Model selection, PHYSICS, Nuclear Theory (nucl-th), 16-GEV, Tensor, Nested sampling algorithm, Coupling constant, Physics, ELECTROPRODUCTION, Astronomy and Astrophysics, HYDROGEN, Polarization (waves), Coupling (probability), Atomic and Molecular Physics, and Optics, Phase factor, Physics and Astronomy, PHOTOPRODUCTION, Nucleon
Abstract

We present the results of a Bayesian analysis of a Regge model to describe the background contribution for K+ Lambda and K+ Sigma0 photoproduction. The model is based on the exchange of K+(494) and K*+(892) trajectories in the t-channel. We utilise the Bayesian evidence Z to determine the best model variant for each channel. The Bayesian evidence integrals were calculated using the Nested Sampling algorithm. For different prior widths, we find decisive Bayesian evidence (\Delta ln Z ~ 24) for a K+ Lambda photoproduction Regge model with a positive vector coupling and a negative tensor coupling constant for the K*+(892) trajectory, and a rotating phase factor for both trajectories. Using the chi^2 minimisation method, one could not draw this conclusion from the same dataset. For the K+ Sigma0 photoproduction Regge model, on the other hand, the difference between the evidence integrals is insufficient to pinpoint one model variant., Comment: 13 pages, 4 figures

Published
2011

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