Zobrazeno 1 - 10
of 75
pro vyhledávání: '"Pignol, Guillaume"'
Autor:
Kuno, Yoshitaka, Pignol, Guillaume
Publikováno v:
Comptes Rendus. Physique, Vol 21, Iss 1, Pp 121-134 (2020)
The precision experiments with muons and neutrons are described. The topics selected cover the anomalies of the muon $g_{\mu }-2$ and the neutron lifetime, and searches for charged lepton flavour violation CLFV of ${\mu ^{-} \rightarrow e^{-}}$ trans
Externí odkaz:
https://doaj.org/article/ea290689be3e4fda9d0bf42e47551012
Autor:
Clément, Benoit, Baeßler, Stefan, Nesvizhevsky, Valery V., Perry, Emily, Pignol, Guillaume, Pioquinto, Jason A., Protasov, Konstantin V., Rebreyend, Dominique, Roulier, Damien, Shen, Lingnan, Strelkov, Alexander V., Vezzu, Francis
The bouncing neutron is one of the rare system where gravity can be studied in a quantum framework. To this end it is crucial to be able to select some specific gravitational quantum state (GQS). The GRANIT apparatus is the first physics experiment c
Externí odkaz:
http://arxiv.org/abs/2205.11130
The existence of a nonzero permanent electric dipole moment (EDM) of the neutron would reveal a new source of CP violation and shed light on the origin of the matter--antimatter asymmetry of the Universe. The sensitivity of current experiments using
Externí odkaz:
http://arxiv.org/abs/2103.01898
Autor:
Pignol, Guillaume
Many experiments are underway in the world to search for a non-zero electric dipole moment (EDM) of a particle with spin 1/2 such as the neutron or the electron. Finding an EDM would reveal new sources of CP violation. EDM measurements are motivated
Externí odkaz:
http://arxiv.org/abs/1912.07876
Autor:
Clement, Benoit, Bes, Alexandre, Lacoste, Ana, Combe, Rodolphe, Nesvizhevsky, Valery V., Pignol, Guillaume, Rebreyend, Dominique, Xi, Yinghao
We report on the development of a 10B conversion layer optimized for ultra-cold neutron detection with silicon detectors. The efficiency of this layer is high and roughly uniform over a large ultra-cold neutron velocity range. The designed titanium-b
Externí odkaz:
http://arxiv.org/abs/1902.09232
Autor:
Cronenberg, Gunther, Brax, Philippe, Filter, Hanno, Geltenbort, Peter, Jenke, Tobias, Pignol, Guillaume, Pitschmann, Mario, Thalhammer, Martin, Abele, Hartmut
Publikováno v:
Nature Physics 14 1022 (2018)
The standard model of cosmology provides a robust description of the evolution of the universe. Nevertheless, the small magnitude of the vacuum energy is troubling from a theoretical point of view. An appealing resolution to this problem is to introd
Externí odkaz:
http://arxiv.org/abs/1902.08775
In neutron electric dipole moment experiments, 199Hg is used as a comagnetometer. The comagnetometer suffers from a false EDM arising in leading order from a gradient dBz/dz in the magnetic field. Our work concerns higher-order multipole corrections
Externí odkaz:
http://arxiv.org/abs/1811.12262
Autor:
Roulier, Damien, Nesvizhevsky, Valery, Clément, Benoît, Freche, Guilhem, Pignol, Guillaume, Rebreyend, Dominique, Vezzu, Francis, Baeßler, Stefan, Strelkov, Alexander
Publikováno v:
Phys. Rev. Accel. Beams 22, 032801 (2019)
A time-of-flight device was developed to characterize wavelength distribution and uniformity of a cold neutron beam. This device is very compact -- the distance of flight is $60$ cm -- but achieves very high resolution -- the intrinsic resolution $\D
Externí odkaz:
http://arxiv.org/abs/1805.12123
Publikováno v:
Phys. Rev. D 97, 115034 (2018)
Dark sectors lying beyond the Standard Model and containing sub-GeV particles which are bilinearly coupled to nucleons would induce quantum forces of the Casimir-Polder type in ordinary matter. Such new forces can be tested by a variety of experiment
Externí odkaz:
http://arxiv.org/abs/1710.00850
Autor:
Sarrazin, Michael, Pignol, Guillaume, Lamblin, Jacob, Pinon, Jonhathan, Meplan, Olivier, Terwagne, Guy, Debarsy, Paul-Louis, Petit, Fabrice, Nesvizhevsky, Valery V.
Publikováno v:
Phys.Lett. B758 (2016) 14-17
In many theoretical frameworks our visible world is a $3$-brane, embedded in a multidimensional bulk, possibly coexisting with hidden braneworlds. Some works have also shown that matter swapping between braneworlds can occur. Here we report the resul
Externí odkaz:
http://arxiv.org/abs/1604.07861