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CERN Document Server 293 Datensätze gefunden  1 - 10nächsteEnde  gehen zum Datensatz: Die Suche hat 0.54 Sekunden gedauert. 
1.
Gravitational waves from rapid structure formation on microscopic scales before matter-radiation equality / Flores, Marcos M. (UCLA) ; Kusenko, Alexander (UCLA ; Tokyo U., IPMU ; CERN) ; Sasaki, Misao (Tokyo U., IPMU ; Kyoto U., Yukawa Inst., Kyoto ; Taiwan, Natl. Taiwan U.)
The existence of scalar fields can be probed by observations of stochastic gravitational waves. Scalar fields mediate attractive forces, usually stronger than gravity, on the length scales shorter than their Compton wavelengths, which can be non-negligible in the early Universe, when the horizon size is small. [...]
arXiv:2209.04970; IPMU22-0019; YITP-22-95.- 2023-07-06 - 9 p. - Published in : Phys. Rev. Lett. 131 (2023) 1 Fulltext: PDF;
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2.
The effect of anisotropic stress and non-adiabatic pressure perturbations on the evolution of the comoving curvature perturbation / Naruko, Atsushi (Tohoku U. ; Kyoto U., Yukawa Inst., Kyoto) ; Romano, Antonio Enea (Antioquia U. ; CERN ; Bishop's U., Sherbrooke) ; Sasaki, Misao (Kyoto U., Yukawa Inst., Kyoto ; Tokyo U., IPMU ; Taiwan, Natl. Taiwan U.) ; Vallejo-Peña, Sergio Andrés (Antioquia U.)
We derive the equation for the evolution of the curvature perturbation on the comoving time slice, $\mathcal{R}_c$, in the presence of anisotropic and non-adiabatic terms in the energy-momentum tensor of matter fields. The equation is obtained by manipulating the perturbed Einstein's equations in the comoving time slice. [...]
arXiv:1804.05005; TU-1059; YITP-17-116; IPMU18-0075.- 2019-11-29 - 9 p. - Published in : Class. Quantum Gravity 37 (2020) 017001 Fulltext: PDF;
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3.
Electromagnetic probes of primordial black holes as dark matter / Kashlinsky, A. (NASA, Goddard ; SSAI, Lanham) ; Ali-Haimoud, Y. (New York U.) ; Clesse, S. (Louvain U. ; Namur U.) ; Garcia-Bellido, J. (Madrid, IFT ; CSIC, Madrid) ; Wyrzykowski, L. (Warsaw U.) ; Achucarro, A. (Leiden U.) ; Amendola, L. (Heidelberg U.) ; Annis, J. (Fermilab) ; Arbey, A. (Lyon, IPN) ; Arendt, R.G. (NASA, Goddard ; Maryland U., Baltimore County) et al.
The LIGO discoveries have rekindled suggestions that primordial black holes (BHs) may constitute part to all of the dark matter (DM) in the Universe. [...]
arXiv:1903.04424 ; FERMILAB-PUB-19-111-CD. - 2019 - 19.
Full text
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4.
Searches for gamma-ray lines and `pure WIMP' spectra from Dark Matter annihilations in dwarf galaxies with H.E.S.S / H.E.S.S. Collaboration
Dwarf spheroidal galaxies are among the most promising targets for detecting signals of Dark Matter (DM) annihilations. The H.E.S.S. [...]
arXiv:1810.00995; DESY 18-157; DESY-18-157; CERN-TH-2018-201.- 2018-11-23 - 23 p. - Published in : JCAP 11 (2018) 037 Fulltext: PDF;
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5.
Second international workshop "Particles, Gravitation and the Universe" - PGU 2018   10 - 15 Dec 2018  - Hanoi, Vietnam  / Nguyen, A K (ed.); Sasaki, M (ed.)
2018
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6.
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Scalaron as a heavy field and PBH formation / Sasaki, Misao (speaker)
2018 - 3432. TH institutes; Primordial versus Astrophysical Origin of Black Holes External links: Talk details; Event details In : Primordial versus Astrophysical Origin of Black Holes
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7.
A new search for the $K_{L} \to \pi^0 \nu \overline{\nu}$ and $K_{L} \to \pi^{0} X^{0}$ decays / Ahn, J.K. (Pusan Natl. U.) ; Baek, K.Y. (Pusan Natl. U.) ; Banno, S. (Osaka U.) ; Beckford, B. (Tohoku U.) ; Brubaker, B. (Yale U.) ; Cai, T. (Rochester U.) ; Campbell, M. (CERN) ; Carruth, C. ; Chen, S.H. ; Chu, S. (Stanford U., Phys. Dept.) et al.
We searched for the $CP$-violating rare decay of neutral kaon, $K_{L} \to \pi^0 \nu \overline{\nu}$, in data from the first 100 hours of physics running in 2013 of the J-PARC KOTO experiment. One candidate event was observed while $0.34\pm0.16$ background events were expected. [...]
arXiv:1609.03637.- 2017 - 11 p. - Published in : Prog. Theor. Exp. Phys. 2017 (2017) 021C01 Article from SCOAP3: PDF; Fulltext: PDF; External link: Preprint
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8.
A White Paper on keV Sterile Neutrino Dark Matter / Drewes, M. (Munich, Tech. U.) ; Lasserre, T. (Munich, Tech. U.) ; Merle, A. (Munich, Max Planck Inst.) ; Mertens, S. (LBL, Berkeley ; KIT, Karlsruhe) ; Adhikari, R. (Jamia Millia Islamia) ; Agostini, M. (Gran Sasso) ; Ky, N.Anh (Hanoi, Inst. Phys. ; Vietnam Natl. U.) ; Araki, T. (Saitama U.) ; Archidiacono, M. (Aarhus U.) ; Bahr, M. (UC, Santa Barbara) et al.
We present a comprehensive review of keV-scale sterile neutrino Dark Matter, collecting views and insights from all disciplines involved - cosmology, astrophysics, nuclear, and particle physics - in each case viewed from both theoretical and experimental/observational perspectives. After reviewing the role of active neutrinos in particle physics, astrophysics, and cosmology, we focus on sterile neutrinos in the context of the Dark Matter puzzle. [...]
arXiv:1602.04816; FERMILAB-PUB-16-068-T.- 2017-01-13 - 239 p. - Published in : JCAP 01 (2017) 025 Fulltext: PDF; External link: Fermilab Accepted Manuscript
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9.
Electroweak Measurements in Electron-Positron Collisions at W-Boson-Pair Energies at LEP / ALEPH Collaboration
Electroweak measurements performed with data taken at the electron-positron collider LEP at CERN from 1995 to 2000 are reported. The combined data set considered in this report corresponds to a total luminosity of about 3~fb$^{-1}$ collected by the four LEP experiments ALEPH, DELPHI, L3 and OPAL, at centre-of-mass energies ranging from $130~GeV$ to $209~GeV$ [...]
arXiv:1302.3415; CERN-PH-EP-2013-022; CERN-PH-EP-2013-022.- Geneva : CERN, 2013 - 126 p. - Published in : Phys. Rep. 532 (2013) 119-244 Draft (restricted): PDF; Fulltext: CERN-PH-EP-2013-022 - PDF; arXiv:1302.3415 - PDF; External link: Preprint
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10.
Conformal invariance of curvature perturbation / Gong, Jinn-Ouk (CERN) ; Hwang, Jai-chan (Kyungpook Natl. U.) ; Park, Wan-Il (Korea Inst. Advanced Study, Seoul) ; Sasaki, Misao (Korea Inst. Advanced Study, Seoul ; Kyoto U., Yukawa Inst., Kyoto) ; Song, Yong-Seon (Korea Inst. Advanced Study, Seoul)
We show that in the single component situation all perturbation variables in the comoving gauge are conformally invariant to all perturbation orders. Generally we identify a special time slicing, the uniform-conformal transformation slicing, where all perturbations are again conformally invariant to all perturbation orders. [...]
arXiv:1107.1840; CERN-PH-TH-2011-123; YITP-11-57; CERN-PH-TH-2011-123; YITP-11-57.- 2011 - 15 p. - Published in : JCAP 09 (2011) 023 Fulltext: PDF; External link: Preprint
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