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CPT and Lorentz symmetry tests with hydrogen using a novel in-beam hyperfine spectroscopy method applicable to antihydrogen experiments
/ Nowak, Lilian (CERN ; Stefan Meyer Inst. Subatomare Phys. ; Vienna U.) ; Malbrunot, Chloe (CERN) ; Simon, Martin C. (Stefan Meyer Inst. Subatomare Phys.) ; Amsler, Claude (Stefan Meyer Inst. Subatomare Phys.) ; Cuendis, Sergio Arguedas (Stefan Meyer Inst. Subatomare Phys.) ; Lahs, Sebastian (Stefan Meyer Inst. Subatomare Phys.) ; Lanz, Andreas (Stefan Meyer Inst. Subatomare Phys. ; Vienna U.) ; Nanda, Amit (Stefan Meyer Inst. Subatomare Phys. ; Vienna U.) ; Wiesinger, Markus (Stefan Meyer Inst. Subatomare Phys.) ; Wolz, Tim (CERN) et al.
We present a Rabi-type measurement of two ground-state hydrogen hyperfine transitions performed in two opposite external magnetic field directions. This puts first constraints at the level of 2.3 10^-21 GeV on a set of coefficients of the Standard Model Extension, which were not measured by previous experiments. [...]
arXiv:2403.17763.-
2024-09-10 - 7 p.
- Published in : Phys. Lett. B 858 (2024) 139012
Fulltext: 2403.17763 - PDF; Publication - PDF;
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Injection and capture of antiprotons in a Penning–Malmberg trap using a drift tube accelerator and degrader foil
/ Amsler, C. (Stefan Meyer Inst. Subatomare Phys.) ; Breuker, H. (Wako, RIKEN) ; Bumbar, M. (CERN) ; Chesnevskaya, S. (Stefan Meyer Inst. Subatomare Phys.) ; Costantini, G. (Brescia U. ; INFN, Pavia) ; Ferragut, R. (INFN, Milan ; Padua U. ; INFN, Padua) ; Giammarchi, M. (Padua U. ; INFN, Padua) ; Gligorova, A. (Stefan Meyer Inst. Subatomare Phys.) ; Gosta, G. (Brescia U. ; INFN, Pavia) ; Higaki, H. (Hiroshima U.) et al.
The Antiproton Decelerator (AD) at CERN provides antiproton bunches with a kinetic energy of 5.3 MeV. The Extra-Low ENergy Antiproton ring at CERN, commissioned at the AD in 2018, now supplies a bunch of electron-cooled antiprotons at a fixed energy of 100 keV. [...]
arXiv:2403.09268.-
2024-06-12 - 22 p.
- Published in : Nucl. Instrum. Methods Phys. Res., A 1065 (2024) 169529
Fulltext: PDF;
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4.
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CPT and Lorentz symmetry tests with hydrogen using a novel in-beam hyperfine spectroscopy method applicable to antihydrogen experiments
/ Nowak, Lilian ; Malbrunot, Chloé ; Simon, Martin C. ; Amsler, Claude ; Arguedas Cuendis, Sergio ; Lahs, Sebastian ; Lanz, Andreas ; Nanda, Amit ; Wiesinger, Markus ; Wolz, Tim et al.
/Asacusa AD-3
We present a Rabi-type measurement of two ground-state hydrogen hyperfine transitions performed in two opposite external magnetic field directions. This puts first constraints at the level of 2.3 × 10^{−21} GeV on a set of coefficients of the Standard Model Extension, which were not measured by previous experiments. [...]
CERN-EP-2024-089.-
Geneva : CERN, 2024 - 9.
Draft (restricted): PDF; Fulltext: PDF;
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5.
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RADES axion search results with a High-Temperature Superconducting cavity in an 11.7 T magnet
/ Ahyoune, S. (ICC, Barcelona U.) ; Álvarez Melcón, A. (Cartagena Politecnica U.) ; Cuendis, S. Arguedas (ICC, Barcelona U.) ; Calatroni, S. (CERN) ; Cogollos, C. (Garching, Max Planck Inst.) ; Díaz-Morcillo, A. (Cartagena Politecnica U.) ; Döbrich, B. (Garching, Max Planck Inst.) ; Gallego, J.D. (Yerkes Observ.) ; García-Barceló, J.M. (Garching, Max Planck Inst.) ; Gimeno, B. (Valencia U., IFIC) et al.
We describe the results of a haloscope axion search performed with an 11.7 T dipole magnet at CERN. [...]
arXiv:2403.07790 ; CERN-EP-2024-076 ; MPP-2024-55.
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2024. - 19 p.
Full text - Draft (restricted) - Fulltext
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6.
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Injection and capture of antiprotons in a Penning-Malmberg trap using a drift tube accelerator and degrader foil
/ Amsler, C. ; Breuker, H. ; Bumbar, M. ; Chesnevskaya, S. ; Costantini, G. ; Ferragut, R. ; Giammarchi, M. ; Gligorova, A. ; Gosta, G. ; Higaki, H. et al.
/Asacusa AD-3
The Antiproton Decelerator (AD) at CERN provides antiproton bunches with a kinetic energy of 5.3 MeV. The Extra-Low ENergy Antiproton ring at CERN, commissioned at the AD in 2018, now supplies a bunch of electron- cooled antiprotons at a fixed energy of 100 keV. [...]
CERN-EP-2024-060.-
Geneva : CERN, 2024 - 22.
- Published in : Nucl. Instrum. Methods Phys. Res. A
Draft (restricted): PDF; Fulltext: PDF;
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Upgrade of the positron system of the ASACUSA-Cusp experiment
/ Lanz, A. (Stefan Meyer Inst. Subatomare Phys. ; Vienna U.) ; Amsler, C. (Stefan Meyer Inst. Subatomare Phys.) ; Breuker, H. (Wako, RIKEN) ; Bumbar, M. (Stefan Meyer Inst. Subatomare Phys.) ; Chesnevskaya, S. (Stefan Meyer Inst. Subatomare Phys.) ; Costantini, G. (Brescia U. ; INFN, Pavia) ; Ferragut, R. (Milan, Polytech.) ; Giammarchi, M. (INFN, Milan) ; Gligorova, A. (Stefan Meyer Inst. Subatomare Phys.) ; Gosta, G. (Brescia U. ; INFN, Pavia) et al.
The ASACUSA-Cusp collaboration has recently upgraded the positron system to improve the production of antihydrogen. [...]
arXiv:2307.06133.
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10 p.
Fulltext
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8.
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A Proposal for a Low-Frequency Axion Search in the 1–2 μ$\umu$ eV Range and Below with the BabyIAXO Magnet
/ Ahyoune, Saiyd (ICC, Barcelona U.) ; Melcón, Alejandro Álvarez (Cartagena Politecnica U.) ; Cuendis, Sergio Arguedas (ICC, Barcelona U.) ; Calatroni, Sergio (CERN) ; Cogollos, Cristian (Munich, Max Planck Inst.) ; Devlin, Jack (Imperial Coll., London) ; Díaz-Morcillo, Alejandro (Cartagena Politecnica U.) ; Díez-Ibáñez, David (U. Zaragoza (main)) ; Döbrich, Babette (Munich, Max Planck Inst.) ; Galindo, Javier (U. Zaragoza (main)) et al.
In the near future BabyIAXO will be the most powerful axion helioscope, relying on a custom-made magnet of two bores of 70 cm diameter and 10 m long, with a total available magnetic volume of more than 7 m$^3$. In this document, we propose and describe the implementation of low-frequency axion haloscope setups suitable for operation inside the BabyIAXO magnet. [...]
arXiv:2306.17243.-
2023-12-01
- Published in : Ann. Phys. (Leipzig) 535 (2023) 2300326
Fulltext: document - PDF; 2306.17243 - PDF;
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Pulsed Production of Antihydrogen in AEgIS
/ AEgIS Collaboration
Cold antihydrogen atoms are a powerful tool to probe the validity of fundamental physics laws, and it's clear that colder atoms, generally speaking, allow an increased level of precision.
After the first production of cold antihydrogen ($\bar{H}$) in 2002, experimental efforts have progressed continuously (trapping, beam formation, spectroscopy), with competitive results already achieved by adapting to cold antiatoms techniques previously well developed for ordinary atoms. Unfortunately, the number of $\bar{H}$ atoms that can be produced in dedicated experiments is many orders of magnitude smaller than available hydrogen atoms, which are at hand in large amount, so the development of novel techniques that allow the production of $\bar{H}$ with well defined conditions (and possibly control its formation time and energy levels) is essential to improve the sensitivity of the methods applied by the different experiments.
We present here the first experimental results concerning the production of $\bar{H}$ in a pulsed mode where the time when 90\% of
the atoms are produced is known with an uncertainty of around 250~ns. [...]
2022 - 7 p.
- Published in : PoS DISCRETE2020-2021 (2022) 079
Fulltext: PDF;
In : 7th Symposium on Prospects in the Physics of Discrete Symmetries (DISCRETE 2020-2021), Bergen, Norway, 29 Nov - 3 Dec 2021, pp.079
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