32 results on '"Guaraldo, Carlo"'
Search Results
2. Topological charge-sharing background reduction for the Silicon Drift Detectors used by the VIP experiment at LNGS
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Miliucci, Marco, Piscicchia, Kristian, Bazzi, Massimiliano, Bragadireanu, Mario, Cargnelli, Michael, Clozza, Alberto, De Paolis, Luca, Del Grande, Raffaele, Guaraldo, Carlo, Iliescu, Mihail, Laubenstein, Matthias, Marton, Johann, Milotti, Edoardo, Napolitano, Fabrizio, Porcelli, Alessio, Scordo, Alessandro, Sgaramella, Francesco, Sirghi, Diana Laura, Sirghi, Florin, Doce, Oton Vazquez, Zmeskal, Johann, and Curceanu, Catalina
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- 2023
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3. Measurement of KN scattering below the KN mass threshold
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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
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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.
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- 2024
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4. Studies of low-energy K−-nucleus/nuclei interactions with light nuclei by AMADEUS
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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
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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.
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- 2023
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5. Optimization of a BEGe Detector Setup for Testing Quantum Foundations in the Underground LNGS Laboratory.
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Piscicchia, Kristian, Clozza, Alberto, Sirghi, Diana Laura, Bazzi, Massimiliano, Bortolotti, Nicola, Bragadireanu, Mario, Cargnelli, Michael, De Paolis, Luca, Del Grande, Raffaele, Guaraldo, Carlo, Iliescu, Mihail, Laubenstein, Matthias, Manti, Simone, Marton, Johann, Miliucci, Marco, Napolitano, Fabrizio, Porcelli, Alessio, Scordo, Alessandro, Sgaramella, Francesco, and Sirghi, Florin
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GERMANIUM detectors ,FORM perception ,DATA acquisition systems ,ENERGY levels (Quantum mechanics) ,QUANTUM mechanics - Abstract
In this work, we report on tests performed with an experimental apparatus prototype based on a broad-energy germanium detector aimed at investigating topical, foundational issues in quantum mechanics: i.e., possible violations of the spin-statistics connection and models of dynamical wave function collapse. Our recent phenomenological analyses demonstrated the importance of pushing the research of new physics signal, predicted in these fields, to an energy range below 10 keV. We describe the development of the dedicated data acquisition system and of the pulse shape discrimination algorithm, which have already allowed us to get a factor two improvement in the lower energy threshold. Future plans are discussed to further improve the lower energy threshold to the level of a few keV. [ABSTRACT FROM AUTHOR]
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- 2024
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6. Characterization of the SIDDHARTA-2 Setup via the Kaonic Helium Measurement.
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Sgaramella, Francesco, Clozza, Francesco, Abbene, Leonardo, Artibani, Francesco, Bazzi, Massimiliano, Borghi, Giacomo, Bragadireanu, Mario, Buttacavoli, Antonino, Cargnelli, Michael, Carminati, Marco, Clozza, Alberto, Deda, Griseld, Del Grande, Raffaele, De Paolis, Luca, Dulski, Kamil, Fiorini, Carlo, Guaraldo, Carlo, Iliescu, Mihail, Iwasaki, Masahiko, and Khreptak, Aleksander
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HELIUM ,DEUTERIUM ,WIDTH measurement ,SILICON detectors - Abstract
The aim of the SIDDHARTA-2 experiment is to perform the first measurement ever of the width and shift induced by the strong interaction to the 2 p → 1 s energy transition of kaonic deuterium. This ambitious goal implies a challenging task due to the very low X-ray yield of kaonic deuterium, which is why an accurate and thorough characterization of the experimental apparatus is mandatory before starting the data-taking campaign. Helium-4 is an excellent candidate for this characterization since it exhibits a high yield in particular for the 3 d → 2 p transition, roughly 100 times greater than that of the kaonic deuterium. The ultimate goal of the work reported in this paper is to study the performances of the full experimental setup in view of the kaonic deuterium measurement. This is carried out by measuring the values of the shift and the width for the 3 d → 2 p energy transition of kaonic helium-4, induced by the strong interaction. The values obtained for these quantities, for a total integrated luminosity of ∼31/ p b , are ε 2 p = 2.0 ± 1.2 (stat) ± 1.5 (syst) eV and Γ 2 p = 1.9 ± 5.7 (stat) ± 0.7 (syst) eV . The results, compared to the value of the shift measured by the SIDDHARTA experiment ε 2 p = 0 ± 6 (stat) ± 2 (syst) eV , show a net enhancement of the resolution of the apparatus, providing strong evidence of the potential to perform the challenging measurement of the kaonic deuterium. [ABSTRACT FROM AUTHOR]
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- 2024
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7. Comparison of 3ΛH/4ΛH production cross-section via (K−, π0) reaction at J-PARC
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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
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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.
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- 2022
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8. Summary of the K−pp bound-state observation in E15 and future prospects
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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
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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.
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- 2022
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9. Analysis methods used and planned for VIP-2
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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
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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.
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- 2022
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10. Kaonic atoms measurements at the DAΦNE collider: the SIDDHARTA-2 experiment
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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
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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.
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- 2022
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11. Search for a remnant violation of the Pauli exclusion principle in a Roman lead target
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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
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- 2020
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12. Potentialities of CdZnTe Quasi-Hemispherical Detectors for Hard X-ray Spectroscopy of Kaonic Atoms at the DAΦNE Collider.
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Abbene, Leonardo, Buttacavoli, Antonino, Principato, Fabio, Gerardi, Gaetano, Bettelli, Manuele, Zappettini, Andrea, Bazzi, Massimiliano, Bragadireanu, Mario, Cargnelli, Michael, Carminati, Marco, Clozza, Alberto, Deda, Griseld, Del Grande, Raffaele, De Paolis, Luca, Fabbietti, Laura, Fiorini, Carlo, Guaraldo, Carlo, Iliescu, Mihail, Iwasaki, Misahiko, and Khreptak, Aleksander
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HARD X-rays ,X-ray spectroscopy ,DETECTORS ,X-ray detection ,SOFT X rays ,GAMMA ray spectrometry ,ATOMS - 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 light kaonic atoms (hydrogen, deuterium, and helium). Currently, there have been new research activities within the framework of the SIDDHARTA-2 experiment and EXCALIBUR proposal focusing on performing precise and accurate measurements of hard X-rays (>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 cm
2 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. [ABSTRACT FROM AUTHOR]- Published
- 2023
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13. First Experimental Survey of a Whole Class of Non-Commutative Quantum Gravity Models in the VIP-2 Lead Underground Experiment.
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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
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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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14. A Novel Approach to Parameter Determination of the Continuous Spontaneous Localization Collapse Model.
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Piscicchia, Kristian, Porcelli, Alessio, Bassi, Angelo, Bazzi, Massimiliano, Bragadireanu, Mario, Cargnelli, Michael, Clozza, Alberto, De Paolis, Luca, Del Grande, Raffaele, Derakhshani, Maaneli, Lajos, Diósi, Donadi, Sandro, Guaraldo, Carlo, Iliescu, Mihai, Laubenstein, Matthias, Manti, Simone, Marton, Johann, Miliucci, Marco, Napolitano, Fabrizio, and Scordo, Alessandro
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PROBABILITY density function ,QUANTUM superposition ,LOCALIZATION (Mathematics) ,GERMANIUM detectors ,WAVE functions - Abstract
Models of dynamical wave function collapse consistently describe the breakdown of the quantum superposition with the growing mass of the system by introducing non-linear and stochastic modifications to the standard Schrödinger dynamics. Among them, Continuous Spontaneous Localization (CSL) was extensively investigated both theoretically and experimentally. Measurable consequences of the collapse phenomenon depend on different combinations of the phenomenological parameters of the model—the strength λ and the correlation length r C —and have led, so far, to the exclusion of regions of the admissible ( λ − r C ) parameters space. We developed a novel approach to disentangle the λ and r C probability density functions, which discloses a more profound statistical insight. [ABSTRACT FROM AUTHOR]
- Published
- 2023
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15. Underground Tests of Quantum Mechanics by the VIP Collaboration at Gran Sasso.
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Napolitano, Fabrizio, Addazi, Andrea, Bassi, Angelo, Bazzi, Massimiliano, Bragadireanu, Mario, Cargnelli, Michael, Clozza, Alberto, De Paolis, Luca, Del Grande, Raffaele, Derakhshani, Maaneli, Donadi, Sandro, Fiorini, Carlo, Guaraldo, Carlo, Iliescu, Mihail, Laubenstein, Matthias, Manti, Simone, Marcianò, Antonino, Marton, Johann, Miliucci, Marco, and Milotti, Edoardo
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QUANTUM mechanics ,NUCLEAR counters ,ENGINEERING standards ,ATOMIC transitions ,GERMANIUM detectors ,QUANTUM gravity - Abstract
Modern physics lays its foundations on the pillars of Quantum Mechanics (QM), which has been proven successful to describe the microscopic world of atoms and particles, leading to the construction of the Standard Model. Despite the big success, the old open questions at its very heart, such as the measurement problem and the wave function collapse, are still open. Various theories consider scenarios which could encompass a departure from the predictions of the standard QM, such as extra-dimensions or deformations of the Lorentz/Poincaré symmetries. At the Italian National Gran Sasso underground Laboratory LNGS, we search for evidence of new physics proceeding from models beyond standard QM, using radiation detectors. Collapse models addressing the foundations of QM, such as the gravity-related Diósi–Penrose (DP) and Continuous Spontaneous Localization (CSL) models, predict the emission of spontaneous radiation, which allows experimental tests. Using a high-purity Germanium detector, we could exclude the natural parameterless version of the DP model and put strict bounds on the CSL one. In addition, forbidden atomic transitions could prove a possible violation of the Pauli Exclusion Principle (PEP) in open and closed systems. The VIP-2 experiment is currently in operation, aiming at detecting PEP-violating signals in Copper with electrons; the VIP-3 experiment upgrade is foreseen to become operative in the next few years. We discuss the VIP-Lead experiment on closed systems, and the strong bounds it sets on classes of non-commutative quantum gravity theories, such as the θ –Poincaré theory. [ABSTRACT FROM AUTHOR]
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- 2023
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16. Search for Deeply Bound Kaonic Nuclear States with AMADEUS
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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
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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.
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- 2017
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17. Investigation of the low-energy K− hadronic interactions with light nuclei by AMADEUS.
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Skurzok, Magdalena, Bazzi, Massimiliano, Bragadireanu, Mario, Bosnar, Damir, Cargnelli, Michael, Clozza, Alberto, Curceanu, Catalina, de Paolis, Luca, Del Grande, Raffaele, Fabbietti, Laura, Guaraldo, Carlo, Iliescu, Mihai, Iwasaki, Masahiko, Sandri, Paolo Levi, Marton, Johann, Miliucci, Marco, Moskal, Pawel, Piscicchia, Kristian, Ramos, Angels, and Scordo, Alessandro
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NUCLEAR matter ,QUANTUM chromodynamics ,NUCLEON-nucleon interactions ,HADRONIC atoms ,DETECTORS - Abstract
The aim of the AMADEUS collaboration is to provide new experimental constraints to the antikaon-nucleon ( K ̄ N) strong interaction in the regime of nonperturbative QCD, investigating the low-energy K − hadronic interactions with light nuclei like H,
4 He,9 Be and 1 2 C. The unique low-momentum kaon beam produced at the DA Φ NE collider is ideal to study K − nuclear captures, both at-rest and in-flight. The large acceptance KLOE detector, used as an active target, allows to achieve excellent position and momentum resolutions. In this work, a brief description of recent AMADEUS results is presented. [ABSTRACT FROM AUTHOR]- Published
- 2022
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18. Testing the Pauli Exclusion Principle with the VIP-2 Experiment.
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Napolitano, Fabrizio, Bartalucci, Sergio, Bertolucci, Sergio, Bazzi, Massimiliano, Bragadireanu, Mario, Capoccia, Cesidio, Cargnelli, Michael, Clozza, Alberto, De Paolis, Luca, Del Grande, Raffaele, Fiorini, Carlo, Guaraldo, Carlo, Iliescu, Mihail, Laubenstein, Matthias, Marton, Johann, Miliucci, Marco, Milotti, Edoardo, Nola, Federico, Piscicchia, Kristian, and Porcelli, Alessio
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ATOMIC transitions ,STANDARD model (Nuclear physics) ,LORENTZ invariance ,SILICON detectors ,X-ray spectroscopy ,COPPER powder - 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 β 2 / 2 ≤ 6.8 × 10 − 42 with the Bayesian approach, and β 2 / 2 ≤ 7.1 × 10 − 42 with the frequentist CL
s technique. [ABSTRACT FROM AUTHOR]- Published
- 2022
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19. Silicon Drift Detectors’ Spectroscopic Response during the SIDDHARTA-2 Kaonic Helium Run at the DAΦNE Collider.
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Miliucci, Marco, Bazzi, Massimiliano, Bosnar, Damir, Bragadireanu, Mario, Carminati, Marco, Cargnelli, Michael, Clozza, Alberto, Curceanu, Catalina, Deda, Griseld, De Paolis, Luca, Grande, Raffaele Del, Fiorini, Carlo, Guaraldo, Carlo, Iliescu, Mihail, Masahiko Iwasaki, King, Pietro, Sandri, Paolo Levi, Marton, Johann, Moskal, Paweł, and Napolitano, Fabrizio
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X-ray spectroscopy ,DEUTERIUM ions ,HELIUM ,DEUTERIUM ,ELECTRONICS - Abstract
A large-area silicon drift detectors (SDDs) system has been developed by the SIDDHARTA2 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. [ABSTRACT FROM AUTHOR]- Published
- 2021
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20. Search of theH particle in antiproton-nuclear interactions
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Guaraldo, Carlo, Maggiora, Angelo, and Zenoni, Aldo
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- 1991
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21. Preface
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Ströher Hans, Kistryn Stanisław, and Guaraldo Carlo
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Physics ,QC1-999 - Published
- 2012
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22. Quantum mechanics under X-rays in the Gran Sasso underground laboratory.
- Author
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Curceanu, Catalina, Sirghi, Diana, Sirghi, Florin, Bartalucci, Sergio, Bazzi, Massimiliano, Clozza, Alberto, De Paolis, Luca, Guaraldo, Carlo, Iliescu, Mihai, Miliucci, Marco, Pietreanu, Dorel, Scordo, Alessandro, Shi, Hexi, Sperandio, Laura, Bassi, Angelo, Donadi, Sandro, Milotti, Edoardo, Bertolucci, Sergio, Bragadireanu, Mario, and Cargnelli, Michael
- Subjects
QUANTUM mechanics ,BAYESIAN analysis ,PARAMETER estimation ,ELECTRON spin states ,NUCLEAR counters - Abstract
By performing X-ray measurements in the 'cosmic silence' of the underground laboratory of Gran Sasso, LNGS-INFN, we test a basic principle of quantum mechanics: the Pauli Exclusion Principle (PEP) for electrons. We present the achieved results of the VIP experiment and the ongoing VIP2 measurement aiming to gain two orders of magnitude improvement in testing PEP. X-ray emission can also be used to put strong constraints on the parameters of the Continuous Spontaneous Localization Model, which was introduced as a possible solution to the measurement problem in Quantum Mechanics. A Bayesian analysis of the data collected by IGEX will be presented, which allows to exclude a broad region of the parameter space which characterizes this model. [ABSTRACT FROM AUTHOR]
- Published
- 2017
- Full Text
- View/download PDF
23. Test of the Pauli Exclusion Principle in the VIP-2 Underground Experiment.
- Author
-
Curceanu, Catalina, Hexi Shi, 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, Matthias, Milotti, Edoardo, Miliucci, Marco, Pichler, Andreas, and Pietreanu, Dorel
- Subjects
PARTICLE physics ,QUANTUM mechanics ,ELECTRON configuration ,PAULI exclusion principle ,GROUND state (Quantum mechanics) ,ENERGY levels (Quantum mechanics) - 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 transitions 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 ×10
-29 . We report a first result from the VIP-2 experiment improving on the VIP limit, which solidifies the final goal of achieving a two orders of magnitude gain in the long run. [ABSTRACT FROM AUTHOR]- Published
- 2017
- Full Text
- View/download PDF
24. The X-ray machine for the examination of quantum mechanics.
- Author
-
Curceanu, Catalina, Bartalucci, Sergio, Bassi, Angelo, Bazzi, Massimiliano, Bertolucci, Sergio, Berucci, Carolina, Bragadireanu, Alexandru Mario, Cargnelli, Michael, Clozza, Alberto, De Paolis, Luca, Di Matteo, Sergio, Donadi, Sandro, D'uffizi, Alessandro, Egger, Jean-Pierre, Guaraldo, Carlo, Iliescu, Mihail, Laubenstein, Matthias, Marton, Johann, Milotti, Edoardo, and Pichler, Andreas
- Subjects
QUANTUM mechanics ,PAULI exclusion principle ,WAVE functions ,LOCALIZATION (Mathematics) ,X-rays - Abstract
By performing X-rays measurements in the underground laboratory of Gran Sasso, LNGS-INFN, we test a basic principle of quantum mechanics: the Pauli exclusion principle (PEP). In the future, we aim to use 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 theories. We present the achieved results of the VIP experiment and the future plans to gain two orders of magnitude in testing PEP with the recently VIP2 setup installed at Gran Sasso. [ABSTRACT FROM AUTHOR]
- Published
- 2016
- Full Text
- View/download PDF
25. Hunting the "impossible atoms" Pauli exclusion principle violation and spontaneous collapse of the wave function at test.
- Author
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Curceanu, Catalina, Bartalucci, Sergio, Bassi, Angelo, Bertolucci, Sergio, Berucci, Carolina, Bragadireanu, Alexandru Mario, Cargnelli, Michael, Clozza, Alberto, Di Matteo, Sergio, Donadi, S., D'uffizi, Alessandro, Egger, J.-P., Guaraldo, Carlo, Iliescu, Mihail, Ishiwatari, Tomoichi, Laubenstein, Matthias, Marton, Johann, Milotti, Edoardo, Pietreanu, Dorel, and Piscicchia, Kristian
- Subjects
PAULI exclusion principle ,WAVE functions ,QUANTUM mechanics ,PROBABILITY theory ,ELECTRONS ,X-rays - 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. [ABSTRACT FROM AUTHOR]
- Published
- 2014
- Full Text
- View/download PDF
26. The DEAR Experiment at DAΦNE.
- Author
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Guaraldo, Carlo and Lauss, Bernhard
- Published
- 2001
- Full Text
- View/download PDF
27. Semi-Analytical Monte Carlo Method to Simulate the Signal of the VIP-2 Experiment.
- Author
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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
- Full Text
- View/download PDF
28. VIP-2 —High-Sensitivity Tests on the Pauli Exclusion Principle for Electrons.
- Author
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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, and Shi, Hexi
- Subjects
ATOMIC transitions ,ELECTRONS ,GOVERNMENT laboratories ,COSMIC background radiation ,BELL'S theorem - 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. [ABSTRACT FROM AUTHOR]
- Published
- 2020
- Full Text
- View/download PDF
29. Editorial.
- Author
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GUARALDO, CARLO and HARAKEH, MUHSIN
- Subjects
- *
INTELLECTUAL cooperation , *NUCLEAR research , *SCIENTIFIC community ,EDITORIALS - Abstract
The author offers his insights on the opportunities and complexities of integrating the activities in the Seventh Framework Programme (FP7) of the European Commission (EC). He notes that the FP played a vital role in stimulating innovative research and scientific cooperation within Europe. He states that the nuclear physics community has defined a number of Joint Research Activities (JRA) to enhance access to the European Nuclear Science and Applications Research (ENSAR) facilities.
- Published
- 2010
- Full Text
- View/download PDF
30. Kaonic Atoms to Investigate Global Symmetry Breaking.
- Author
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Curceanu, Catalina, Guaraldo, Carlo, Sirghi, Diana, Amirkhani, Aidin, Baniahmad, Ata, Bazzi, Massimiliano, Bellotti, Giovanni, Bosnar, Damir, Bragadireanu, Mario, Cargnelli, Michael, Carminati, Marco, Clozza, Alberto, De Paolis, Luca, Del Grande, Raffaele, Fiorini, Carlo, Iliescu, Mihail, Iwasaki, Masahiko, King, Pietro, Levi Sandri, Paolo, and Marton, Johann
- Subjects
- *
SYMMETRY breaking , *QUANTUM chromodynamics , *ATOMS , *SYMMETRY - 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 ¯ 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 Φ NE in spring 2019 and will collect data in 2020. The second, E57 at J-PARC, will become operative in 2021. [ABSTRACT FROM AUTHOR]
- Published
- 2020
- Full Text
- View/download PDF
31. On the Importance of Electron Diffusion in a Bulk-Matter Test of the Pauli Exclusion Principle.
- Author
-
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, Matthias, Marton, Johann, Miliucci, Marco, Pichler, Andreas, Pietreanu, Dorel, Piscicchia, Kristian, Scordo, Alessandro, and Shi, Hexi
- Subjects
ELECTRON diffusion ,PAULI exclusion principle ,CONDUCTION electrons ,ELECTROMAGNETISM ,GROUND state (Quantum mechanics) - 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. [ABSTRACT FROM AUTHOR]- Published
- 2018
- Full Text
- View/download PDF
32. FOREWORD.
- Author
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Guaraldo, Carlo, Machner, Hartmut, and Magiera, Andrzej
- Subjects
- *
PERIODICALS , *NUCLEAR physics - Abstract
Presents a foreword to the January 2005 issue of the "International Journal of Modern Physics."
- Published
- 2005
- Full Text
- View/download PDF
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