CERN Accelerating science

Preprints

新增:
2018-05-18
08:24
Quantum diffusion beyond slow-roll: implications for primordial black-hole production / Ezquiaga, Jose María ; García-Bellido, Juan
Primordial black-holes (PBH) can be produced in single-field models of inflation with a quasi-inflection point in the potential. [...]
IFT-UAM/CSIC-18-051 ; CERN-TH-2018-120 ; arXiv:1805.06731.
- 7 p.
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2018-05-18
08:24
Measurement of $C\!P$ asymmetries in two-body $B_{(s)}^{0}$-meson decays to charged pions and kaons / LHCb Collaboration
The time-dependent $C\!P$ asymmetries in $B^0\to\pi^+\pi^-$ and $B_s^0\to K^+\!K^-$ decays are measured using a data sample of $pp$ collisions corresponding to an integrated luminosity of 3.0 fb$^{-1}$, collected with the LHCb detector at centre-of-mass energies of 7 and 8 TeV. [...]
LHCb-PAPER-2018-006 ; CERN-EP-2018-086 ; arXiv:1805.06759 ; LHCB-PAPER-2018-006 ; CERN-EP-2018-086.
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2018-05-18
08:24
Spontaneous symmetry breaking and the Goldstone theorem in non-Hermitian field theories / Alexandre, Jean ; Ellis, John ; Millington, Peter ; Seynaeve, Dries
We demonstrate the extension to PT-symmetric field theories of the Goldstone theorem, confirming that the spontaneous appearance of a field vacuum expectation value via minimisation of the effective potential in a non-Hermitian model is accompanied by a massless scalar boson. [...]
KCL-PH-TH/2018-18 ; CERN-PH-TH/2018-117 ; arXiv:1805.06380 ; KCL-PH-TH-2018-18 ; CERN-PH-TH-2018-117.
- 20 p.
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2018-05-18
08:24
Precise QCD Description of the Higgs Boson Transverse Momentum Spectrum / Chen, Xuan (U. Zurich (main)) ; Gehrmann, Thomas (U. Zurich (main)) ; Glover, E.W. Nigel (Durham U.) ; Huss, Alexander (CERN) ; Li, Ye (Fermilab,) ; Neill, Duff (Los Alamos) ; Schulze, Markus (Humboldt U., Berlin) ; Stewart, Iain W. (MIT, Cambridge, CTP) ; Zhu, Hua Xing (Zhejiang U.)
The transverse momentum ($p_T$) distribution of Higgs bosons at hadron colliders enables a detailed probe of its production dynamics and is a key ingredient to precision studies of Higgs boson properties, but receives very large QCD corrections. [...]
arXiv:1805.00736.
- 6 p.
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2018-05-18
06:50
Geant4 simulations of soft proton scattering in X-ray optics / Fioretti, Valentina (IASF, Bologna) ; Mineo, Teresa (IASF, Palermo) ; Bulgarelli, Andrea (IASF, Bologna) ; Dondero, Paolo (SWHARD srl, Genova) ; Ivanchenko, Vladimir (CERN ; Geant4 Assoc. ; Tomsk State U.) ; Lei, Fan (RadMod Research, Camberley) ; Lotti, Simone (IAS, Rome) ; Macculi, Claudio (IAS, Rome) ; Mantero, Alfonso (SWHARD srl, Genova)
Low energy protons (< 300 keV) can enter the field of view of X-ray telescopes, scatter on their mirror surfaces at small incident angles, and deposit energy on the detector. [...]
2017. - 23 p.

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2018-05-18
06:50
Fiber optic humidity sensors for high-energy physics applications at CERN / Consales, M (Sannio U.) ; Buosciolo, A (Institute for Composite and Biomedical Materials, CNR, Portici) ; Cutolo, A (Sannio U.) ; Breglio, G (U. Naples (main)) ; Irace, A (U. Naples (main)) ; Buontempo, S (INFN, Naples) ; Petagna, P (CERN) ; Giordano, M (Institute for Composite and Biomedical Materials, CNR, Portici) ; Cusano, A (Sannio U.)
This work is devoted to a feasibility analysis for the development of novel fiber optic humidity sensors to be applied in high-energy physics (HEP) applications and in particular in experiments actually running at the European Organization for Nuclear Research (CERN). [...]
2011. - 9 p.
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2018-05-18
06:50
Key components of data publishing: using current best practices to develop a reference model for data publishing / Austin, Claire C (Research Data Canada, Toronto ; Carleton U. (main)) ; Bloom, Theodora (BMJ, London) ; Dallmeier-Tiessen, Sünje (CERN) ; Khodiyar, Varsha K (Nature Publishing Group, London) ; Murphy, Fiona (Reading U.) ; Nurnberger, Amy (Columbia U. (main)) ; Raymond, Lisa (Woods Hole Oceanographic Institution, Woods Hole) ; Stockhause, Martina (German Climate Computing Centre, Hamburg) ; Tedds, Jonathan (Leicester U.) ; Vardigan, Mary (U. Michigan, Ann Arbor ; Leicester U.) et al.
The availability of workflows for data publishing could have an enormous impact on researchers, research practices and publishing paradigms, as well as on funding strategies and career and research evaluations. [...]
2016. - 16 p.

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2018-05-18
06:50
Robotic manipulation for the shoe-packaging process / Gracia, Luis (Valencia, Polytechnic U.) ; Perez-Vidal, Carlos (Miguel Hernandez U.) ; Mronga, Dennis (DFKI, Bremen) ; de Paco, Jose-Manuel (CERN) ; Azorin, Jose-Maria (Miguel Hernandez U.) ; de Gea, Jose (DFKI, Bremen)
This paper presents the integration of a robotic system in a human-centered environment, as it can be found in the shoe manufacturing industry. [...]
2017. - 15 p.

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2018-05-18
06:50
Energy efficiency of large scale graph processing platforms / Khan, Kashif Nizam (Helsinki Inst. of Phys.) ; Hoque, Mohammad Ashraful (U. Helsinki (main)) ; Niemi, Tapio (CERN ; Helsinki Inst. of Phys.) ; Ou, Zhonghong (BUPT, Beijing) ; Nurminen, Jukka K (Helsinki Inst. of Phys.)
A number of graph processing platforms have emerged recently as a result of the growing demand on graph data analytics with complex and large-scale graph structured datasets. [...]
2016. - 8 p.

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2018-05-17
14:40
Observation of the decay $\mathrm{Z}\to\psi\,\ell^+\ell^-\to\mu^+\mu^-\ell^+\ell^-$ with the CMS detector / Leontsinis, Stefanos (Zurich U.) /CMS Collaboration
The observation of the $\mathrm{Z}$ boson rare decay to a $\psi$ meson and two oppositely charged same-flavour leptons, $\ell^+ \ell^-$, where $\psi$ represents the sum of $\mathrm{J}/\psi$ and $\psi(\mathrm{2S})\to\mathrm{J}/\psi\, X$, and $\ell=\mu,\mathrm{e}$, is presented. The data sample used corresponds to an integrated luminosity of $35.9\,\mathrm{fb}^{-1}$ of proton-proton collisions at a center-of-mass energy of $13\,\mathrm{TeV}$ accumulated by the CMS experiment at the LHC. [...]
CMS-CR-2018-026.- Geneva : CERN, 2018 - 5 p. Fulltext: PDF;
In : 53rd Rencontres de Moriond on Electroweak Interactions and Unified Theories, La Thuile, Italy, 10 - 17 Mar 2018

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