Publications (37)
VIP: An Experiment to Search for a Violation of the Pauli Exclusion Principle
S. Bartalucci, S. Bertolucci, M. Bragadireanu +18
The Pauli Exclusion Principle is a basic principle of Quantum Mechanics, and its validity has never been seriously challenged. However, given its fundamental standing, it is very i…
correlations from the stopped reaction on He
T. Suzuki, H. Bhang, J. Chiba +23
We have investigated correlations of coincident pairs from the stopped reaction on He, and clearly observed and branches of the two-nucleon absorption…
X-ray transition yields of low-Z kaonic atoms produced in Kapton
M. Bazzi, G. Beer, C. Berucci +32
The X-ray transition yields of kaonic atoms produced in Kapton polyimide (C22H10N2O5) were measured for the first time in the SIDDHARTA experiment. X-ray yields of the kaonic atoms…
-series X-ray yield measurement of kaonic hydrogen atoms in a gaseous target
M. Bazzi, G. Beer, G. Bellotti +29
We measured the -series X-rays of the exotic atom in the SIDDHARTA experiment with a gaseous hydrogen target of 1.3 g/l, which is about 15 times the of h…
Search for a kaonic nuclear state via He
M. Iwasaki, H. Bhang, J. Chiba +23
Very recently, we have performed a couple of experiments, {\it{KEK PS-E549/E570}}, for the detailed study of the strange tribaryon obtained in {\it{KEK PS-E471}}. These…
First measurement of kaonic helium-3 X-rays
SIDDHARTA collaboration, M. Bazzi, G. Beer +35
The first observation of the kaonic 3He 3d - 2p transition was made using slow K- mesons stopped in a gaseous 3He target. The kaonic atom X-rays were detected with large-area silic…
Line shape of the muH(3p - 1s) hyperfine transitions
D. S. Covita, D. F. Anagnostopoulos, H. Gorke +13
The (3p - 1s) X-ray transition to the muonic hydrogen ground state was measured with a high resolution crystal spectrometer. A Doppler effect broadening of the X-ray line was estab…
Precision X-ray spectroscopy of kaonic atoms as a probe of low-energy kaon-nucleus interaction
H. Shi, M. Bazzi, G. Beer +29
In the exotic atoms where one atomic electron is replaced by a , the strong interaction between the and the nucleus introduces an energy shift and broadening of…
Kaon-nuclei interaction studies at low energies (the AMADEUS project)
K. Piscicchia, M. Bazzi, C. Berucci +26
The AMADEUS experiment aims to perform dedicated precision studies in the sector of low-energy kaon-nuclei interaction at the DAΦNE collider at LNF-INFN. In particular the experim…
Searches for the Violation of Pauli Exclusion Principle at LNGS in VIP(-2) experiment
H Shi, S. Bartalucci, S. Bertolucci +27
The VIP (Violation of Pauli exclusion principle) experiment and its follow-up experiment VIP-2 at the Laboratori Nazionali del Gran Sasso (LNGS) search for X-rays from Cu atomic st…
New experimental limit on Pauli Exclusion Principle violation by electrons (the VIP experiment)
C. Curceanu Petrascu, S. Bartalucci, S. Bertolucci +19
The Pauli Exclusion Principle is one of the basic principles of modern physics and is at the very basis of our understanding of matter: thus it is fundamental importance to test th…
Temperature dependencies of the energy and time resolution of silicon drift detectors
B. K. Wuenschek, Y. Fujiwara, T. Hashimoto +7
The response of silicon drift detectors (SDDs), which were mounted together with their preamplifiers inside a vacuum chamber, was studied in a temperature range from 100 K to 200 K…
High sensitivity tests of the Pauli Exclusion Principle with VIP2
J. Marton, S. Bartalucci, S. Bertolucci +24
The Pauli Exclusion Principle is one of the most fundamental rules of nature and represents a pillar of modern physics. According to many observations the Pauli Exclusion Principle…
The VIP Experiment
S. Bartalucci, S. Bertolucci, M. Bragadireanu +21
The Pauli Exclusion Principle (PEP) is a basic principle of Quantum Mechanics, and its validity has never been seriously challenged. However, given its importance, it is very impor…
Search for strange tribaryon states in the inclusive ^4He(K^{-}_{stopped}, p) reaction
M. Sato, H. Bhang, J. Chiba +23
A search for tribaryon states was performed at KEK-PS. We adopted the He( reaction to populate the states with strangeness -1, charge 0 and isospin 1. No sig…
VIP 2: Experimental tests of the Pauli Exclusion Principle for electrons
A. Pichler, S. Bartalucci, S. Bertolucci +27
Many experiments investigated the violation of the Pauli Exclusion Principle (PEP) since its discovery in 1925. The VIP (VIolation of the Pauli Principle) experiment tested the PEP…
correlations from the He(stopped-,) reaction
T. Suzuki, H. Bhang, J. Chiba +23
We have observed an intense high-energy component in an inclusive He(stopped , ) spectrum. For back-to-back pairs a prominent event cluster has been found just be…
Testing the Pauli Exclusion Principle for Electrons
J. Marton, S. Bartalucci, S. Bertolucci +22
One of the fundamental rules of nature and a pillar in the foundation of quantum theory and thus of modern physics is represented by the Pauli Exclusion Principle. We know that thi…
Kaonic hydrogen X-ray measurement in SIDDHARTA
M. Bazzi, G. Beer, L. Bombelli +33
Kaonic hydrogen atoms provide a unique laboratory to probe the kaon-nucleon strong interaction at the energy threshold, allowing an investigation of the interplay between spontaneo…
Structure near ++ threshold in the in-flight He reaction
PARC E15 Collaboration, Y. Sada, S. Ajimura +69
To search for an S= -1 di-baryonic state which decays to , the reaction was studied at 1.0 GeV/. Unobserved neutrons were kinematically i…
Measurement of the strong interaction induced shift and width of the 1s state of kaonic deuterium at J-PARC
J. Zmeskal, M. Sato, S. Ajimura +74
The antikaon-nucleon interaction close to threshold provides crucial information on the interplay between spontaneous and explicit chiral symmetry breaking in low-energy QCD. In th…
VIP 2: Experimental tests of the Pauli Exclusion Principle for electrons
A. Pichler, S. Bartalucci, M. Bazzi +28
The Pauli Exclusion Principle (PEP) was famously discovered in 1925 by the austrian physicist Wolfgang Pauli. Since then, it underwent several experimental tests. Starting in 2006,…
Strong interaction studies with kaonic atoms
J. Marton, M. Bazzi, G. Beer +30
The strong interaction of antikaons with nucleons and nuclei in the low-energy regime represents an active research field connected intrinsically with few-body physics. There are i…
Preliminary study of kaonic deuterium X-rays by the SIDDHARTA experiment at DAFNE
M. Bazzi, G. Beer, C. Berucci +32
The study of the KbarN system at very low energies plays a key role for the understanding of the strong interaction between hadrons in the strangeness sector. At the DAFNE electron…
New experimental limit on Pauli Exclusion Principle violation by electrons (the VIP experiment)
S. Bartalucci, S. Bertolucci, M. Bragadireanu +19
The Pauli exclusion principle (PEP) represents one of the basic principles of modern physics and, even if there are no compelling reasons to doubt its validity, it still spurs a li…
Application of photon detectors in the VIP2 experiment to test the Pauli Exclusion Principle
A. Pichler, S. Bartalucci, M. Bazzi +28
The Pauli Exclusion Principle (PEP) was introduced by the austrian physicist Wolfgang Pauli in 1925. Since then, several experiments have checked its validity. From 2006 until 2010…
Spontaneously emitted X-rays: an experimental signature of the dynamical reduction models
C. Curceanu, S. Bartalucci, A. Bassi +29
We present the idea of searching for X-rays as a signature of the mechanism inducing the spontaneous collapse of the wave function. Such a signal is predicted by the continuous spo…
Beyond quantum mechanics? Hunting the 'impossible' atoms (Pauli Exclusion Principle violation and spontaneous collapse of the wave function at test)
K. Piscicchia, C. Curceanu, S. Bartalucci +27
The development of mathematically complete and consistent models solving the so-called "measurement problem", strongly renewed the interest of the scientific community for the foun…
Three- and four-nucleon absorption processes observed in the -He reaction at rest
T. Suzuki, H. Bhang, J. Chiba +23
Correlations of back-to-back coincident and pairs from the stopped reaction on He had been investigated, thereby and branches of non-mesonic three…
A New Measurement of Kaonic Hydrogen X rays
M. Bazzi, G. Beer, L. Bombelli +34
The system at threshold is a sensitive testing ground for low energy QCD, especially for the explicit chiral symmetry breaking. Therefore, we have measured the -serie…
Precision measurement of the x-ray energy in kaonic He
S. Okada, G. Beer, H. Bhang +30
We have measured the Balmer-series x-rays of kaonic He atoms using novel large-area silicon drift x-ray detectors in order to study the low-energy -nucleus strong inte…
Measurements of the strong-interaction widths of the kaonic 3He and 4He 2p levels
The SIDDHARTA collaboration, M. Bazzi, G. Beer +34
The kaonic 3He and 4He X-rays emitted in the 3d-2p transitions were measured in the SIDDHARTA experiment. The widths of the kaonic 3He and 4He 2p states were determined to be Gamma…
Line shape analysis of the K transition in muonic hydrogen
D. S. Covita, D. F. Anagnostopoulos, H. Fuhrmann +19
The K transition in muonic hydrogen was measured with a high-resolution crystal spectrometer. The spectrum is shown to be sensitive to the ground-state hyperfine splitting, the…
Kaonic 3He and 4He X-ray measurements in SIDDHARTA
T. Ishiwatari, M. Bazzi, G. Beer +38
The strong-interaction shift of kaonic 3He and 4He 2p states was measured using gaseous targets for the first time in the SIDDHARTA experiment. The determined shift of kaonic 4He i…
Strong interaction studies with kaonic atoms
J. Marton, M. Bazzi, G. Beer +30
The strong interaction of antikaons (K-) with nucleons and nuclei in the low energy regime represents an active research field connected intrinsically with few-body physics. There…
Cauchy Problem on Non-globally Hyperbolic Spacetimes
I. Ya. Arefeva, T. Ishiwatari, I. V. Volovich
Solutions of the Cauchy problem for the wave equation on a non-globally hyperbolic spacetime, which contains closed timelike curves (time machines) are considered. It is proved, th…
Testing the Pauli Exclusion Principle for electrons at LNGS
H. Shi, S. Bartalucci, S. Bertolucci +27
High-precision experiments have been done to test the Pauli exclusion principle (PEP) for electrons by searching for anomalous -series X-rays from a Cu target supplied with elec…