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Implementation of the frozen-spin technique for the search for a muon electric dipole moment
/ Hume, Timothy (PSI, Villigen ; Zurich, ETH) ; Chakraborty, Ritwika (PSI, Villigen) ; Doinaki, Anastasia (PSI, Villigen ; Zurich, ETH) ; Dutsov, Chavdar (PSI, Villigen) ; Giovannozzi, Massimo (CERN) ; Michielsen, Katia (PSI, Villigen ; Zurich, ETH) ; Morvaj, Ljiljana (PSI, Villigen) ; Papa, Angela (PSI, Villigen ; INFN, Pisa) ; Schmidt-Wellenburg, Philipp (PSI, Villigen) ; Stäger, David (PSI, Villigen ; Zurich, ETH)
/muEDM Collaboration
Applying the frozen-spin technique in a compact3 T solenoid will enable a search for the muon electricdipole moment (EDM) with unprecedented sensitivity, improving uponthe current direct limit by approximately a factor of 1000. Afterinjection of a selected muon, a pulsed magnetic field will reduceits longitudinal momentum sufficiently to be confined within astatic weakly-focusing magnetic field and maintain a closed circularorbit. [...]
2024 - 5 p.
- Published in : JINST 19 (2024) P01021
Fulltext: PDF;
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Preparations for a search of the muon EDM at PSI
/ Schmidt-Wellenburg, P (PSI, Villigen) ; Calzolaio, C (PSI, Villigen) ; Doinaki, A (PSI, Villigen) ; Dutsov, C (PSI, Villigen) ; Giovannozzi, M (CERN) ; Hume, T (PSI, Villigen) ; Trillaud, F (Mexico U.)
/muEDM Collaboration
Electric dipole moments (EDMs) of fundamental particles violate time invariance and the combined symmetry of charge and parity (CP). The existence of a large muon EDM (muEDM) is made plausible by tensions with Standard Model predictions for semileptonic decays of heavy meson measured at LHCb, BaBar, and Belle, as well as the muon’s anomalous magnetic moment (AMM). [...]
2023 - 5 p.
- Published in : EPJ Web Conf. 289 (2023) 01008
Fulltext: PDF;
In : Workshop on "Flavour changing and conserving processes" 2022 (FCCP 2022), Anacapri, Italy, 22 - 24 Sep 2022, pp.01008
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Anomalous spin precession systematic effects in the search for a muon EDM using the frozen-spin technique
/ Cavoto, G. (INFN, Rome) ; Chakraborty, R. (PSI, Villigen) ; Doinaki, A. (PSI, Villigen) ; Dutsov, C. (PSI, Villigen) ; Giovannozzi, M. (CERN) ; Hume, T. (PSI, Villigen ; Zurich, ETH) ; Kirch, K. (PSI, Villigen ; Zurich, ETH) ; Michielsen, K. (PSI, Villigen ; Zurich, ETH ; Ec. Polytech., Palaiseau (main)) ; Morvaj, L. (PSI, Villigen) ; Papa, A. (INFN, Pisa) et al.
At the Paul Scherrer Institut (PSI), we are currently working on the development of a high-precision apparatus with the aim of searching for the muon electric dipole moment (EDM) with unprecedented sensitivity. The underpinning principle of this experiment is the frozen-spin technique, a method that suppresses the spin precession due to the anomalous magnetic moment, thereby enhancing the signal-to-noise ratio for EDM signals. [...]
arXiv:2311.10508.-
2024-03-12 - 24 p.
- Published in : Eur. Phys. J. C 84 (2024) 262
Fulltext: 2311.10508 - PDF; document - PDF;
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Status of the muEDM Experiment at PSI
/ Khaw, Kim Siang (Shanghai Jiao Tong U.) ; Chen, Cheng (Shanghai Jiao Tong U.) ; Giovannozzi, Massimo (CERN) ; Hu, Tianqi (Shanghai Jiao Tong U.) ; Lv, Meng (Shanghai Jiao Tong U.) ; Ng, Jun Kai (Shanghai Jiao Tong U.) ; Papa, Angela (Shanghai Jiao Tong U.) ; Schmidt-Wellenburg, Philipp (PSI, Villigen ; INFN, Pisa ; Pisa U.) ; Vitali, Bastiano (PSI, Villigen ; INFN, Pisa ; Rome U.) ; Wong, Guan Ming (Shanghai Jiao Tong U.)
/PSI muEDM Collaboration
Permanent electric dipole moments (EDMs) are excellent probes of physics beyond the Standard Model, especially on new sources of CP violation. The muon EDM has recently attracted significant attention due to discrepancies in the magnetic anomaly of the muon, as well as potential violations of lepton-flavor universality in B-meson decays. [...]
arXiv:2307.01535.-
2023-09-04 - 7 p.
- Published in : Phys. Sci. Forum: 8 (2023) , no. 1, pp. 50
Fulltext: document - PDF; 2307.01535 - PDF;
In : 23rd International Workshop on Neutrinos from Accelerators (NuFact 2022), Snowbird, Salt Lake City, Utah, United States, 30 Jul - 6 Aug 2022, pp.50
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Cold atoms in space: community workshop summary and proposed road-map
/ Alonso, Iván (Balearic Islands U.) ; Alpigiani, Cristiano (Washington U., Seattle) ; Altschul, Brett (South Carolina U.) ; Araújo, Henrique (Imperial Coll., London) ; Arduini, Gianluigi (CERN) ; Arlt, Jan (Aarhus U.) ; Badurina, Leonardo (King's Coll. London) ; Balaž, Antun (Belgrade, Inst. Phys.) ; Bandarupally, Satvika (Florence U. ; INFN, Florence) ; Barish, Barry C. (LIGO Lab., Caltech) et al.
We summarize the discussions at a virtual Community Workshop on Cold Atoms in Space concerning the status of cold atom technologies, the prospective scientific and societal opportunities offered by their deployment in space, and the developments needed before cold atoms could be operated in space. The cold atom technologies discussed include atomic clocks, quantum gravimeters and accelerometers, and atom interferometers. [...]
arXiv:2201.07789; FERMILAB-CONF-22-694-V; CERN-TH-2022-004.-
2022-11-20 - 64 p.
- Published in : EPJ Quant. Technol.: 9 (2022) , no. 1, pp. 30
Fulltext: bb4d1d31d6edd562e94939489bfc05d6 - PDF; 2201.07789 - PDF; Fulltext from Publisher: PDF; External link: Fermilab Library Server
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An optical atomic clock based on a highly charged ion
/ King, Steven A. (Braunschweig, Phys. Tech. Bund.) ; Spieß, Lukas J. (Braunschweig, Phys. Tech. Bund.) ; Micke, Peter (Braunschweig, Phys. Tech. Bund. ; Heidelberg, Max Planck Inst. ; CERN) ; Wilzewski, Alexander (Braunschweig, Phys. Tech. Bund.) ; Leopold, Tobias (Braunschweig, Phys. Tech. Bund.) ; Benkler, Erik (Braunschweig, Phys. Tech. Bund.) ; Lange, Richard (Braunschweig, Phys. Tech. Bund.) ; Huntemann, Nils (Braunschweig, Phys. Tech. Bund.) ; Surzhykov, Andrey (Braunschweig, Phys. Tech. Bund. ; Braunschweig Tech. U.) ; Yerokhin, Vladimir A. (Braunschweig, Phys. Tech. Bund.) et al.
Optical atomic clocks are the most accurate measurement devices ever constructed and have found many applications in fundamental science and technology. The use of highly charged ions (HCI) as a new class of references for highest accuracy clocks and precision tests of fundamental physics has long been motivated by their extreme atomic properties and reduced sensitivity to perturbations from external electric and magnetic fields compared to singly charged ions or neutral atoms. [...]
arXiv:2205.13053.-
2022-11-02 - 10 p.
- Published in : Nature 611 (2022) 43-47
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Tests of General Relativity with GWTC-3
/ LIGO Scientific Collaboration
The ever-increasing number of detections of gravitational waves (GWs) from compact binaries by the Advanced LIGO and Advanced Virgo detectors allows us to perform ever-more sensitive tests of general relativity (GR) in the dynamical and strong-field regime of gravity. [...]
arXiv:2112.06861 ; LIGO-P2100275.
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41 p.
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