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Article: Estimation of antihydrogen properties in experiments with small signal deficit.

Radics, B

Proceedings. Mathematical, physical, and engineering sciences

2019 Volume 475, Issue 2223, Page(s) 20180663

Abstract: For a class of precision CPT-invariance test measurements using antihydrogen, a deficit in the data indicates the presence of the signal. The construction of classical confidence intervals for the properties of the antiatoms from measurements may pose a ... ...

Abstract	For a class of precision CPT-invariance test measurements using antihydrogen, a deficit in the data indicates the presence of the signal. The construction of classical confidence intervals for the properties of the antiatoms from measurements may pose a challenge due to the limited statistics experimentally available. We use the Feldman-Cousins (Feldman and Cousins,
Language	English
Publishing date	2019-03-13
Publishing country	England
Document type	Journal Article
ZDB-ID	209241-4
ISSN	1471-2946 ; 1364-5021 ; 0962-8444 ; 0080-4630 ; 0950-1207
ISSN (online)	1471-2946
ISSN	1364-5021 ; 0962-8444 ; 0080-4630 ; 0950-1207
DOI	10.1098/rspa.2018.0663
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Article ; Online: New Bounds from Positronium Decays on Massless Mirror Dark Photons.

Vigo, C / Gerchow, L / Radics, B / Raaijmakers, M / Rubbia, A / Crivelli, P

Physical review letters

2020 Volume 124, Issue 10, Page(s) 101803

Abstract: We present the results of a search for a hidden mirror sector in positronium decays with a sensitivity comparable with the bounds set by the prediction of the primordial He^{4} abundance from big bang nucleosynthesis. No excess of events compatible with ... ...

Abstract	We present the results of a search for a hidden mirror sector in positronium decays with a sensitivity comparable with the bounds set by the prediction of the primordial He^{4} abundance from big bang nucleosynthesis. No excess of events compatible with decays into the dark sector is observed, resulting in an upper limit for the branching ratio of this process of 3.0×10^{-5} (90% C.L.). This is an order of magnitude more stringent than the current existing laboratory bounds and it constrains the mixing strength of ordinary photons to dark mirror photons at a level of ϵ<5.0×10^{-8}.
Language	English
Publishing date	2020-03-26
Publishing country	United States
Document type	Journal Article
ZDB-ID	208853-8
ISSN	1079-7114 ; 0031-9007
ISSN (online)	1079-7114
ISSN	0031-9007
DOI	10.1103/PhysRevLett.124.101803
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Article ; Online: Double hit reconstruction in large area multiplexed detectors.

Radics, B / Janka, G / Cooke, D A / Procureur, S / Crivelli, P

The Review of scientific instruments

2019 Volume 90, Issue 9, Page(s) 93305

Abstract: A novel approach is presented to unfold particle hit positions in tracking detectors with multiplexed readout representing an underdetermined system of linear equations. The method does not use any prior information about the hit positions, and the only ... ...

Abstract	A novel approach is presented to unfold particle hit positions in tracking detectors with multiplexed readout representing an underdetermined system of linear equations. The method does not use any prior information about the hit positions, and the only assumption in the procedure is that single strip charge values on consecutive detector strips follow a smooth distribution. Ambiguities introduced by charge sharing from multiplexing are reduced by using a regularization technique. We have tested this method on a multiplexed 50 × 50 cm
Language	English
Publishing date	2019-09-30
Publishing country	United States
Document type	Journal Article
ZDB-ID	209865-9
ISSN	1089-7623 ; 0034-6748
ISSN (online)	1089-7623
ISSN	0034-6748
DOI	10.1063/1.5109315
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Article: Izolált IgG4 hypertrophiás pachymeningitis agyideg-érintettséggel.

Faragó, Péter / Kincses, Tamás Zsigmond / Kovács, László / Hortobágyi, Tibor / Despotov, Katalin / Radics, Bence / Klivényi, Péter / Tajti, János

Ideggyogyaszati szemle

2023 Volume 76, Issue 1-2, Page(s) 58–62

Abstract: IgG4-related (IgG4-RD) disease is a relatively newly identified, chronic autoimmune disorder that can affect any organ system. The disease is relatively rare. It has mostly systemic presentation, however it can also appear in isolated form in one single ... ...

Title translation	Isolated IgG4 hypertrophic pachymeningitis with cranial nerve involvement.
Abstract	IgG4-related (IgG4-RD) disease is a relatively newly identified, chronic autoimmune disorder that can affect any organ system. The disease is relatively rare. It has mostly systemic presentation, however it can also appear in isolated form in one single organ. In our report, we demonstrate an elderly male patient’s case with IgG4-RD presented in the form of diffuse meningeal inflammation and hypertrophic pachymeningitis with one-sided cranial nerve and intraventricular involvement.
MeSH term(s)	Humans ; Male ; Aged ; Immunoglobulin G4-Related Disease/complications ; Immunoglobulin G4-Related Disease/diagnosis ; Immunoglobulin G ; Meningitis ; Hypertrophy ; Inflammation ; Cranial Nerves ; Magnetic Resonance Imaging
Chemical Substances	Immunoglobulin G
Language	English
Publishing date	2023-03-10
Publishing country	Hungary
Document type	Case Reports ; English Abstract
ZDB-ID	2240317-6
ISSN	0019-1442
ISSN	0019-1442
DOI	10.18071/isz.76.0058
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Article: CANOMAD syndrome with respiratory failure.

Salamon, András / Dézsi, Lívia / Radics, Bence / Varga, Edina Tímea / Hortobágyi, Tibor / Tömösvári, Adrienn / Vécsei, László / Klivényi, Péter / Rajda, Cecília

Ideggyogyaszati szemle

2020 Volume 73, Issue 3-4, Page(s) 141–144

Abstract: CANOMAD (chronic ataxic neuropathy, ophthalmoplegia, M-protein agglutination, disialosyl antibodies) syndrome is a rare polyneuropathy. IgM paraproteins react with ganglioside-containing disialylated epitopes resulting in dorsal root ganglionopathy and B- ...

Title translation	Légzési elégtelenséggel járó CANOMAD szindróma.
Abstract	CANOMAD (chronic ataxic neuropathy, ophthalmoplegia, M-protein agglutination, disialosyl antibodies) syndrome is a rare polyneuropathy. IgM paraproteins react with ganglioside-containing disialylated epitopes resulting in dorsal root ganglionopathy and B-lymphocyte infiltration of cranial and peripheral nerves. Clinical features include ataxia, slight muscle weakness, areflexia, sensory- and cranial nerve symptoms. Case studies have reported the efficacy of rituximab and intravenous immunoglobulin (IVIg) treatments. We present the case of a 57-year-old man, who had difficulty walking, with numbness and clumsiness in all limbs. He had areflexia, vibratory sensation loss and ataxia. Laboratory tests showed IgM monoclonal components and disialosyl antibodies in the serum. Nerve conduction studies indicated severe sensorimotor demyelinating polyneuroradiculopathy. Despite IVIg and rituximab treatments, the patient's disease course gradually worsened and he died of respiratory failure. Neuropathological examination revealed dorsal column- and dorsal root atrophy with mixed mononuclear cell infiltration. This article aims to draw attention to this syndrome, and the use of early potent immunosuppressive treatment to improve patients' quality of life.
MeSH term(s)	Anemia, Hemolytic, Autoimmune ; Ataxia ; Fatal Outcome ; Humans ; Male ; Middle Aged ; Ophthalmoplegia ; Polyneuropathies ; Quality of Life ; Respiratory Insufficiency
Language	English
Publishing date	2020-05-04
Publishing country	Hungary
Document type	Case Reports
ZDB-ID	2240317-6
ISSN	0019-1442
ISSN	0019-1442
DOI	10.18071/isz.73.0141
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Article ; Online: “Dum spiro spero”: clinicopathologic characteristics of SARS-CoV-2 infection

Zombori, Tamás / Kuthi, Levente / Hortobágyi, Tibor / Csörgő, Erika / Árgyelán, János / Kocsis, Lajos / Sejben, István / Kaizer, László / Radics, Bence / Sejben, Anita / Pancsa, Tamás / Nyári, Gergely Róbert / Baráth, Bence / Cserni, Gábor / Iványi, Béla / Tiszlavicz, László

Orvosi hetilap

2021 Volume 162, Issue 45, Page(s) 1791–1802

Title translation	"Dum spiro spero": a SARS-CoV-2-fertőzés klinikopatológiája 26 eset kapcsán.
MeSH term(s)	Aged ; COVID-19 ; Humans ; Hypertension ; Male ; SARS-CoV-2
Language	Hungarian
Publishing date	2021-11-07
Publishing country	Hungary
Document type	Journal Article
ZDB-ID	123879-6
ISSN	1788-6120 ; 0030-6002
ISSN (online)	1788-6120
ISSN	0030-6002
DOI	10.1556/650.2021.32387
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Article ; Online: Defining 'healthy' in preschool-aged children for forced oscillation technique reference equations.

Shackleton, Claire / Czovek, Dorottya / Grimwood, Keith / Ware, Robert S / Radics, Bence / Hantos, Zoltan / Sly, Peter D

Respirology (Carlton, Vic.)

2017 Volume 23, Issue 4, Page(s) 406–413

Abstract: Background and objective: Selecting 'healthy' preschool-aged children for reference ranges may not be straightforward. Relaxing inclusion criteria for normative data does not affect spirometry z-scores. We therefore investigated the effect of similarly ... ...

Abstract	Background and objective: Selecting 'healthy' preschool-aged children for reference ranges may not be straightforward. Relaxing inclusion criteria for normative data does not affect spirometry z-scores. We therefore investigated the effect of similarly relaxing inclusion criteria in preschoolers on reference ranges for respiratory impedance (Zrs) using a modified forced oscillation technique (FOT). Methods: The International Study of Asthma and Allergies in Childhood questionnaire classified 585 children into a healthy and five mutually exclusive groups. Zrs was measured between 4 and 26 Hz and resistance (R) and compliance (C) obtained by model fitting. Prediction models were determined using mixed effect models and z-scores compared between healthy children and the five groups. Results: Zrs data were obtained for 494 participants (4.30 ± 0.7 years) on 587 occasions. Comparison of the Zrs z-scores between the healthy children and the health groups found significant differences in children with asthma, current wheeze and respiratory symptoms, but not in children born preterm or with early-life wheeze. Adding these two groups to the healthy dataset had no significant effect on the distribution of z-scores and increased the size of the dataset by 22.3%. Conclusion: Our data suggest that preschool-aged children born preterm or with early-life wheeze can be included in FOT reference equations, while those with asthma, current wheeze and respiratory symptoms within 4 weeks of testing should be excluded. This more inclusive approach results in more robust FOT reference ranges.
MeSH term(s)	Airway Resistance ; Asthma/physiopathology ; Child ; Child, Preschool ; Female ; Humans ; Lung Compliance ; Male ; Premature Birth/physiopathology ; Reference Values ; Respiratory Sounds ; Spirometry
Language	English
Publishing date	2017-10-05
Publishing country	Australia
Document type	Journal Article ; Research Support, Non-U.S. Gov't
ZDB-ID	1435849-9
ISSN	1440-1843 ; 1323-7799
ISSN (online)	1440-1843
ISSN	1323-7799
DOI	10.1111/resp.13186
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Article ; Online: Search for Light Dark Matter with NA64 at CERN.

Andreev, Yu M / Banerjee, D / Banto Oberhauser, B / Bernhard, J / Bisio, P / Celentano, A / Charitonidis, N / Chumakov, A G / Cooke, D / Crivelli, P / Depero, E / Dermenev, A V / Donskov, S V / Dusaev, R R / Enik, T / Frolov, V N / Galleguillos Silva, R B / Gardikiotis, A / Gertsenberger, S V /

Girod, S / Gninenko, S N / Hösgen, M / Kachanov, V A / Kambar, Y / Karneyeu, A E / Kasianova, E A / Kekelidze, G D / Ketzer, B / Kirpichnikov, D V / Kirsanov, M M / Kolosov, V N / Kramarenko, V A / Kravchuk, L V / Krasnikov, N V / Kuleshov, S V / Lyubovitskij, V E / Lysan, V / Marini, A / Marsicano, L / Matveev, V A / Mena Fredes, R / Mena Yanssen, R G / Molina Bueno, L / Mongillo, M / Peshekhonov, D V / Polyakov, V A / Radics, B / Salamatin, K M / Samoylenko, V D / Sieber, H / Shchukin, D A / Soto, O / Tikhomirov, V O / Tlisova, I V / Toropin, A N / Tuzi, M / Vasilishin, B I / Volkov, P V / Volkov, V Yu / Voronchikhin, I V / Zamora-Saá, J / Zhevlakov, A S

Physical review letters

2023 Volume 131, Issue 16, Page(s) 161801

Abstract: Thermal dark matter models with particle χ masses below the electroweak scale can provide an explanation for the observed relic dark matter density. This would imply the existence of a new feeble interaction between the dark and ordinary matter. We ... ...

Abstract	Thermal dark matter models with particle χ masses below the electroweak scale can provide an explanation for the observed relic dark matter density. This would imply the existence of a new feeble interaction between the dark and ordinary matter. We report on a new search for the sub-GeV χ production through the interaction mediated by a new vector boson, called the dark photon A^{'}, in collisions of 100 GeV electrons with the active target of the NA64 experiment at the CERN SPS. With 9.37×10^{11} electrons on target collected during 2016-2022 runs NA64 probes for the first time the well-motivated region of parameter space of benchmark thermal scalar and fermionic dark matter models. No evidence for dark matter production has been found. This allows us to set the most sensitive limits on the A^{'} couplings to photons for masses m_{A^{'}}≲0.35 GeV, and to exclude scalar and Majorana dark matter with the χ-A^{'} coupling α_{D}≤0.1 for masses 0.001≲m_{χ}≲0.1 GeV and 3m_{χ}≤m_{A^{'}}.
Language	English
Publishing date	2023-11-05
Publishing country	United States
Document type	Journal Article
ZDB-ID	208853-8
ISSN	1079-7114 ; 0031-9007
ISSN (online)	1079-7114
ISSN	0031-9007
DOI	10.1103/PhysRevLett.131.161801
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Article ; Online: Search for a New B-L Z^{'} Gauge Boson with the NA64 Experiment at CERN.

Andreev, Yu M / Banerjee, D / Banto Oberhauser, B / Bernhard, J / Bisio, P / Burtsev, V E / Celentano, A / Charitonidis, N / Chumakov, A G / Cooke, D / Crivelli, P / Depero, E / Dermenev, A V / Donskov, S V / Dusaev, R R / Enik, T / Frolov, V N / Gardikiotis, A / Gerassimov, S G /

Gninenko, S N / Hösgen, M / Jeckel, M / Kachanov, V A / Karneyeu, A E / Kekelidze, G / Ketzer, B / Kirpichnikov, D V / Kirsanov, M M / Kolosov, V N / Kovalenko, S G / Kramarenko, V A / Kravchuk, L V / Krasnikov, N V / Kuleshov, S V / Lyubovitskij, V E / Lysan, V / Marsicano, L / Matveev, V A / Mikhailov, Yu V / Molina Bueno, L / Peshekhonov, D V / Polyakov, V A / Radics, B / Rubbia, A / Samalantin, K M / Samoylenko, V D / Sieber, H / Shchukin, D / Soto, O / Tikhomirov, V O / Tlisova, I V / Toropin, A N / Vasilishin, B I / Volkov, P V / Volkov, V Yu / Voronchikhin, I / Zamora-Saá, J

Physical review letters

2022 Volume 129, Issue 16, Page(s) 161801

Abstract: A search for a new Z^{'} gauge boson associated with (un)broken B-L symmetry in the keV-GeV mass range is carried out for the first time using the missing-energy technique in the NA64 experiment at the CERN SPS. From the analysis of the data with 3.22×10^ ...

Abstract	A search for a new Z^{'} gauge boson associated with (un)broken B-L symmetry in the keV-GeV mass range is carried out for the first time using the missing-energy technique in the NA64 experiment at the CERN SPS. From the analysis of the data with 3.22×10^{11} electrons on target collected during 2016-2021 runs, no signal events were found. This allows us to derive new constraints on the Z^{'}-e coupling strength, which, for the mass range 0.3≲m_{Z^{'}}≲100 MeV, are more stringent compared to those obtained from the neutrino-electron scattering data.
Language	English
Publishing date	2022-10-20
Publishing country	United States
Document type	Journal Article
ZDB-ID	208853-8
ISSN	1079-7114 ; 0031-9007
ISSN (online)	1079-7114
ISSN	0031-9007
DOI	10.1103/PhysRevLett.129.161801
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Article ; Online: The ASACUSA Micromegas Tracker: A cylindrical, bulk Micromegas detector for antimatter research.

Radics, B / Nagata, Y / Yamazaki, Y / Ishikawa, S / Kuroda, N / Matsuda, Y / Anfreville, M / Aune, S / Boyer, M / Chateau, F / Combet, M / Granelli, R / Legou, P / Mandjavidze, I / Procureur, S / Riallot, M / Vallage, B / Vandenbroucke, M

The Review of scientific instruments

2015 Volume 86, Issue 8, Page(s) 83304

Abstract: The ASACUSA Micromegas Tracker (AMT; ASACUSA: Atomic Spectroscopy and Collisions Using Slow Antiprotons) was designed to be able to reconstruct antiproton-nucleon annihilation vertices in three dimensions. The goal of this device is to study antihydrogen ...

Abstract	The ASACUSA Micromegas Tracker (AMT; ASACUSA: Atomic Spectroscopy and Collisions Using Slow Antiprotons) was designed to be able to reconstruct antiproton-nucleon annihilation vertices in three dimensions. The goal of this device is to study antihydrogen formation processes in the ASACUSA cusp trap, which was designed to synthesise a spin-polarised antihydrogen beam for precise tests of Charge, Parity, and Time (CPT) symmetry invariance. This paper discusses the structure and technical details of an AMT detector built into such an environment, its data acquisition system and the first performance with cosmic rays.
Language	English
Publishing date	2015-08
Publishing country	United States
Document type	Journal Article
ZDB-ID	209865-9
ISSN	1089-7623 ; 0034-6748
ISSN (online)	1089-7623
ISSN	0034-6748
DOI	10.1063/1.4927685
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