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CERN Document Server	Znaleziono 2,047 rekordów 1 - 10 skocz do rekordu:	Szukanie trwało 4.06 sekund.

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Model implementations of axion dark matter from kinetic misalignment / Eröncel, Cem (Istanbul, Tech. U. ; Istanbul Aydin U.) ; Sato, Ryosuke (Osaka U.) ; Servant, Géraldine (DESY ; Hamburg U., Inst. Theor. Phys. II ; CERN) ; Sørensen, Philip (U. Padua, Dept. Phys. Astron. ; INFN, Padua)
The axion kinetic misalignment mechanism (KMM) opens the possibility of explaining dark matter for almost any axion mass and decay constant that are not accessible by the standard misalignment mechanism, in particular at low values of the axion decay constant (i.e. [...]
DESY 23-194 ; OU-HET-1152 ; CERN-TH-2024-093 ; arXiv:2408.08355. - 51.
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New Upper Limit on the Axion-Photon Coupling with an Extended CAST Run with a Xe-Based Micromegas Detector / CAST Collaboration
Hypothetical axions provide a compelling explanation for dark matter and could be emitted from the hot solar interior. The CERN Axion Solar Telescope (CAST) has been searching for solar axions via their back conversion to X-ray photons in a 9-T 10-m long magnet directed towards the Sun. [...]
arXiv:2406.16840.- 2024-11-27 - 9 p. - Published in : Phys. Rev. Lett. 133 (2024) 221005 Fulltext: Publication - PDF; 2406.16840 - PDF;

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Prospects for HFGW searches with the axion experiments ALPS II and BabyIAXO / Lindner, Axel (speaker)
At DESY in Hamburg, axions search experiments not relying on the dark matter paradigm are taking data (ALPS II) or have good prospects to start construction soon (BabyIAXO). Due to the similarity of axion-photon and GW-photon conversions in background magnetic fields, both experiments will also be sensitive to high frequency gravitational waves (HF-GW). [...]
2023 - 1625. TH institutes; Ultra-high frequency gravitational waves: where to next ? External links: Talk details; Event details In : Ultra-high frequency gravitational waves: where to next ?

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Gravitational Wave Anisotropies from Primordial Black Holes / Bartolo, N. (INFN, Padua ; Padua U.) ; Bertacca, D. (INFN, Padua ; Padua U., Astron. Dept.) ; De Luca, V. (Geneva U., CAP) ; Franciolini, G. (Geneva U., CAP) ; Matarrese, S. (GSSI, Aquila ; INFN, Padua ; Padua U.) ; Peloso, M. (INFN, Padua ; U. Padua, Dept. Phys. Astron.) ; Ricciardone, A. (INFN, Padua ; Stavanger U.) ; Riotto, A. (CERN ; Geneva U., CAP) ; Tasinato, G. (Swansea U.)
An observable stochastic background of gravitational waves is generated whenever primordial black holes are created in the early universe thanks to a small-scale enhancement of the curvature perturbation. We calculate the anisotropies and non-Gaussianity of such stochastic gravitational waves background which receive two contributions, the first at formation time and the second due to propagation effects. [...]
arXiv:1909.12619.- 2020-02-26 - 21 p. - Published in : JCAP 2002 (2020) 028 Fulltext: PDF;

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Gravitational wave background from primordial black holes in globular clusters / Vanzan, Eleonora (Padua U. ; INFN, Padua) ; Libanore, Sarah (Padua U. ; Ben Gurion U. of Negev) ; Valbusa Dall'Armi, Lorenzo (Padua U. ; INFN, Padua) ; Bellomo, Nicola (Padua U. ; INFN, Padua ; U. Texas, Austin (main) ; Texas U.) ; Raccanelli, Alvise (Padua U. ; INFN, Padua ; Padua Observ. ; CERN)
Primordial black holes still represent a viable candidate for a significant fraction, if not for the totality, of dark matter. If these compact objects have masses of order tens of solar masses, their coalescence can be observed by current and future ground-based gravitational wave detectors. [...]
arXiv:2405.13871.- 2024-10-03 - 44 p.
Fulltext: document - PDF; 2405.13871 - PDF;

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An accurate solar axions ray-tracing response of BabyIAXO / IAXO collaboration
BabyIAXO is the intermediate stage of the International Axion Observatory (IAXO) to be hosted at DESY. [...]
arXiv:2411.13915. - 39.
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Dzyaloshinskii-Moriya interaction as a fast quantum information scrambler / Ozaydin, Fatih (Tokyo Intl. U. ; CERN) ; Altintas, Azmi Ali (Istanbul U. ; Istanbul Tech. U.) ; Yesilyurt, Can (Istanbul U.) ; Bayındır, Cihan (Istanbul Tech. U. ; Bogazici U. ; CERN)
Black holes are conjectured to be the fastest information scramblers, and within holographic duality, the speed of quantum information scrambling of thermal states of quantum systems is at the heart of studies of chaos and black hole dynamics. [...]
arXiv:2110.03645. - 6 p.
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Study of charging-up of PCB planes for neutrino experiment readout / Baibussinov, B. (INFN, Padua) ; Bettini, M. (INFN, Padua) ; Fabris, F. (INFN, Padua) ; Guglielmi, A. (INFN, Padua) ; Marchini, S. (INFN, Padua) ; Meng, G. (INFN, Padua) ; Nicoletto, M. (INFN, Padua) ; Pietropaolo, F. (INFN, Padua ; CERN) ; Rampazzo, G. (INFN, Padua) ; Triozzi, R. (INFN, Padua) et al.
The use of double-faced, metallized, perforated PCB planes, segmented into strips for the anodic read-out of ionization signals in liquid argon TPCs, is emerging as a promising technology for charge readout in liquid argon TPCs used in large volume detectors.As a proof of concept, a prototype liquid Argon TPC hosting this new anode configuration based on single side perforated PCB planes has been constructed and exposed to cosmic rays at LNL in Italy. Tests were performed with both the metallized and insulating sides of the anode facing the drift volume, providing the first evidence of the focusing effect on drift electron trajectories through the PCB holes due to charge accumulation on the insulator surface..
arXiv:2407.19105.- 2024-11-14 - 12 p. - Published in : JINST 19 (2024) P11012 Fulltext: 2407.19105 - PDF; document - PDF;

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Axion dark matter from frictional misalignment / Papageorgiou, Alexandros (IBS, Daejeon, CTPU) ; Quílez, Pablo (DESY) ; Schmitz, Kai (Munster U. ; CERN)
We study the impact of sphaleron-induced thermal friction on the axion dark-matter abundance due to the interaction of an axion-like particle (ALP) with a dark non-abelian gauge sector in a secluded thermal bath. Thermal friction can either enhance the axion relic density by delaying the onset of oscillations or suppress it by damping them. [...]
arXiv:2206.01129; CTPU-PTC-22-11; DESY-22-094; MS-TP-22-17; CERN-TH-2022-091.- 2023-01-31 - 18 p. - Published in : JHEP 2301 (2023) 169 Fulltext: document - PDF; 2206.01129 - PDF;

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The International Axion Observatory IAXO. Letter of Intent to the CERN SPS committee / IAXO Collaboration
This Letter of Intent describes IAXO, the International Axion Observatory, a proposed 4th generation axion helioscope. [...]
CERN-SPSC-2013-022 ; SPSC-I-242. - 2013. - 84 p.
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