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CERN Document Server 24 registres trobats  1 - 10següentfinal  anar al registre: La cerca s'ha fet en 1.52 segons. 
1.
Dark sector searches at NA64-$e$ / Celentano, Andrea (INFN, Genoa) /NA64 Collaboration
The Light Dark Matter (LDM) hypothesis identifies dark matter particles with new sub-GeV "Hidden Sector'' states, neutral under Standard Model interactions and interfacing with our world through a new force. In the simplest model, the new interaction is mediated by a massive vector particle, also called "dark photon'' ($A^\prime$), kinetically mixed with the ordinary photon. [...]
2024 - 6 p. - Published in : PoS WIFAI2023 (2024) 014 Fulltext: PDF;
In : Workshop Italiano sulla Fisica ad Alta Intensita (WIFAI 2023), Rome, Italy, 8 - 10 Nov 2023, pp.014
2.
Dark-Sector Search via Pion-Produced η and η′ Mesons Decaying Invisibly in the NA64h Detector / NA64 Collaboration
We present the first results from a proof-of-concept search for dark sectors via invisible decays of pseudoscalar η and η′ mesons in the NA64h experiment at the CERN SPS. Our novel technique uses the charge-exchange reaction of 50 GeV π- on nuclei of an active target as the source of neutral mesons. [...]
2024 - 6 p. - Published in : Phys. Rev. Lett. 133 (2024) 121803 Fulltext: PDF;
3.
First constraints on the L$_{μ}$− L$_{τ}$ explanation of the muon g-2 anomaly from NA64-e at CERN / NA64 Collaboration
The inclusion of an additional $U(1)$ gauge $L_\mu-L_\tau$ symmetry would release the tension between the measured and the predicted value of the anomalous muon magnetic moment: this paradigm assumes the existence of a new, light $Z^\prime$ vector boson, with dominant coupling to $\mu$ and $\tau$ leptons and interacting with electrons via a loop mechanism. The $L_\mu-L_\tau$ model can also explain the Dark Matter relic abundance, by assuming that the $Z^\prime$ boson acts as a ``portal'' to a new Dark Sector of particles in Nature, not charged under known interactions. [...]
arXiv:2404.06982; CERN-EP-2024-103.- Geneva : CERN, 2024-07-23 - 15 p. - Published in : JHEP 2407 (2024) 212 Draft (restricted): PDF; Fulltext: CERN-EP-2024-103 - PDF; document - PDF; NA64-PAPER-24-02 - PDF; 2404.06982 - PDF;
4.
Measurement for the $e^+$ beam purity at the CERN-SPS H8 beamline / Bisio, Pietro (INFN e Universita Genova (IT)) ; Celentano, Andrea (INFN e Universita Genova (IT)) ; Marsicano, Luca (INFN e Universita Genova (IT)) ; Bondi, Mariangela (INFN e Laboratori Nazionali di Frascati (IT)) ; Marini, Anna (INFN e Universita Genova (IT))
This Note describes the $e^+$-beam purity measurement for the H8 beamline of the Super Proton Synchrotron (SPS) at CERN. This study was performed in the context of the POKERINO prototype characterization, conducted during a week of measurements in the summer of 2023 at the H8 beamline. [...]
CERN-OPEN-2024-002; POKER-NOTE-23-12.- Geneva : CERN, 2024 - 4 p. Preprint: PDF; External link: Approve this document (restricted)
5.
Light dark matter search with positron beams at NA64 / Bisio, P ; Bondi, M ; Celentano, A ; Marini, A ; Marsicano, L ; NA64, collaboration
We propose to extend the current NA64 scientific program to include a positron-beam, missing-energy search for light dark matter (LDM) in the mass region above 100 MeV, exploiting the high-quality CERN $e^+$ beam at the SPS H4 beamline. [...]
CERN-SPSC-2024-003 ; SPSC-P-348-ADD-4.
- 2024.
Fulltext - Original Document (SPSC-P-348)
6.
Probing light dark matter with positron beams at NA64 / NA64 Collaboration
We present the results of a missing-energy search for Light Dark Matter which has a new interaction with ordinary matter transmitted by a vector boson, called dark photon ($A^\prime$). For the first time, this search is performed with a positron beam by using the significantly enhanced production of $A^\prime$ in the resonant annihilation of positrons with atomic electrons of the target nuclei, followed by the invisible decay of $A^\prime$ into dark matter. [...]
arXiv:2308.15612; CERN-EP-2023-192.- Geneva : CERN, 2024-02-01 - 6 p. - Published in : Phys. Rev. D 109 (2024) L031103 Draft (restricted): PDF; Fulltext: CERN-EP-2023-192 - PDF; 2308.15612 - PDF; Publication - PDF;
7.
Search for Light Dark Matter with NA64 at CERN / NA64 Collaboration
Thermal dark matter models with particle $\chi$ 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. [...]
arXiv:2307.02404; CERN-EP-2023-130.- 2023-10-16 - 7 p. - Published in : Phys. Rev. Lett. 131 (2023) 161801 Fulltext: 2307.02404 - PDF; Publication - PDF;
8.
Strong Interaction Physics at the Luminosity Frontier with 22 GeV Electrons at Jefferson Lab / Accardi, A. (Hampton U.) ; Achenbach, P. (Jefferson Lab) ; Adhikari, D. (Virginia Tech.) ; Afanasev, A. (George Washington U.) ; Akondi, C.S. (Florida State U.) ; Akopov, N. (Yerevan Phys. Inst.) ; Albaladejo, M. (Valencia U., IFIC) ; Albataineh, H. (Texas A-M ; HARC, Woodlands) ; Albrecht, M. (Jefferson Lab) ; Almeida-Zamora, B. (Sonora U.) et al.
This document presents the initial scientific case for upgrading the Continuous Electron Beam Accelerator Facility (CEBAF) at Jefferson Lab (JLab) to 22 GeV. It is the result of a community effort, incorporating insights from a series of workshops conducted between March 2022 and April 2023. [...]
arXiv:2306.09360; JLAB-PHY-23-3840; JLAB-THY-23-3848.- 2024-09-04 - 139 p. - Published in : Eur. Phys. J. A 60 (2024) 173 Fulltext: PDF; External link: JLab Document Server
9.
Measurement of the intrinsic hadronic contamination in the NA64<math altimg="si2.svg" display="inline" id="d1e670"><mrow><mo>−</mo><mi>e</mi></mrow></math> high-purity <math altimg="si3.svg" display="inline" id="d1e678"><mrow><msup><mrow><mi>e</mi></mrow><mrow><mo>+</mo></mrow></msup><mo>/</mo><msup><mrow><mi>e</mi></mrow><mrow><mo>−</mo></mrow></msup></mrow></math> beam at CERN / Andreev, Yu.M. (Unlisted) ; Banerjee, D. (CERN) ; Oberhauser, B. Banto (Zurich, ETH) ; Bernhard, J. (CERN) ; Bisio, P. (INFN, Genoa ; Genoa U.) ; Bondí, M. (INFN, Catania) ; Celentano, A. (INFN, Genoa) ; Charitonidis, N. (CERN) ; Chumakov, A.G. (Unlisted) ; Cooke, D. (University Coll. London) et al.
In this study, we present the measurement of the intrinsic hadronic contamination at the CERN SPS H4 beamline configured to transport electrons and positrons at 100 GeV/c momentum. The analysis was performed using data collected by the NA64-$e$ experiment in 2022. [...]
arXiv:2305.19411; CERN-EP-2023-108.- Geneva : CERN, 2023-10-12 - 8 p. - Published in : Nucl. Instrum. Methods Phys. Res., A 1057 (2023) 168776 Draft (restricted): PDF; Fulltext: 2305.19411 - PDF; Publication - PDF; CERN-EP-2023-108 - PDF;
10.
A cosmic muon test facility with the MRPC telescopes of the EEE Project / Grazzi, S (INFN, Genoa ; Messina U.) ; Abbrescia, M (Bari Polytechnic ; INFN, Bari ; Bari U.) ; Avanzini, C (Pisa U. ; INFN, Pisa) ; Baldini, L (Pisa U. ; INFN, Pisa) ; Ferroli, R Baldini (Frascati) ; Batignani, G (Pisa U. ; INFN, Pisa) ; Battaglieri, M (INFN, Genoa ; Jefferson Lab) ; Bisio, P (INFN, Genoa ; Genoa U.) ; Boi, S (Cagliari U.) ; Bossini, E (Pisa U. ; INFN, Pisa) et al.
The Extreme Energy Events (EEE) ‘telescope’ is made by 3 Multigap Resistive Plate Chambers (MRPC), each with an active area of 158x82 cm$^2$ in size. Each detector is part of a large network of about sixty telescopes spread over the Italian territory. [...]
2023 - 3 p. - Published in : Nucl. Instrum. Methods Phys. Res., A 1045 (2023) 167612
In : 15th Pisa Meeting on Advanced Detectors, La Biodola - Isola D'elba, Italy, 22 - 28 May 2022

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41 Celentano, A
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