CERN Accelerating science

Published Articles

Darreres entrades:
2015-07-27
15:53
New potential for the Leitz Infinity Coordinate Measuring Machine / Sanz, Claude (CERN) ; Cherif, Ahmed (CERN) ; MAINAUD DURAND , Hélène (CERN) ; SCHNEIDER, Jurgen (HEXAGON Metrology) ; STEFFENS, Norbert (HEXAGON Metrology) ; MORANTZ , Paul (Cranfield University) ; SHORE , Paul (Cranfield University)
The following study is realised within the frame of the PACMAN project: a study on Particle Accelerator Components Metrology and Alignment to the Nanometre scale, which is a Marie Curie program supported by the European commission and hosted by CERN (European Organisation for Nuclear Research). The aim of this program is to develop and build a pre-alignment bench on which each component is aligned to the required level in one single step using a stretched wire [...]
CERN-ACC-2015-0078.- Geneva : CERN, 2015 - Published in : Fulltext: PDF;
In : 15th International Conference & Exhibition, Leuven, Belgium, 1 - 5 Jun 2015

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2015-07-27
13:44
Prospettive per il Run 2 ad LHC / Ciulli, Vitaliano (INFN, Florence)
With the approach of resumption of the activity of the Large Hadron Collider at the CERN, scheduled for the spring of 2015, the physicists of the ATLAS and CMS experiments are pondering the prospects that will be opened up by the increase of centre-of-mass energy from 8 to 13 TeV, after the discovery of the Higgs boson. However the results from Run 2 go, they will mark an important new chapter in the physics of fundamental interactions, making it possible to explore the region up to around 1 TeV of mass in the search for new particles that can explain dark matter and the other unresolved questions of the Standard Model..
2015 - Published in : Il Colle di Galileo 4 (2015) 67-76

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2015-07-27
07:28
Configuration mixing effects in neutron-rich carbon isotopes / Yuan, C X ; Xu, F R ; Qi, C
Shell model calculations are done to study the structure of neutron-rich carbon isotopes. For both even-A and odd-A neutron-rich carbon isotopes, the energy levels are strongly affected by the configuration mixing of valence neutrons. [...]
arXiv:1507.06809.- 2015 - Published in : Conference Series 420 (2013) 012049 External link: Preprint

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2015-07-27
07:26
The Branchings of the Main s-process: Their Sensitivity to alpha-induced Reactions on 13C and 22Ne and to the Uncertainties of the Nuclear Network / Bisterzo, Sara ; Gallino, Roberto ; Kaeppeler, Franz ; Wiescher, Michael ; Imbriani, Gianluca ; Straniero, Oscar ; Cristallo, Sergio ; Goerres, Joachim ; deBoer, Richard
This paper provides a detailed analysis of the main component of the slow neutron capture process (the s-process), which accounts for the solar abundances of half of the nuclei with 90 <~ A <~ 208. We examine the impact of the uncertainties of the two neutron sources operating in low-mass asymptotic giant branch (AGB) stars: the 13C(alpha, n)16O reaction, which releases neutrons radiatively during interpulse periods (kT ~ 8 keV), and the 22Ne(alpha, n)25Mg reaction, partially activated during the convective thermal pulses (TPs). [...]
arXiv:1507.06798.- 2015 - 43 p. - Published in : Mon. Not. R. Astron. Soc. 4 (2015) 9 External link: Preprint

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2015-07-27
07:26
Study of the diffuse gamma-ray emission from the Galactic plane with ARGO-YBJ / Bartoli, B ; Bernardini, P ; Bi, X J ; Branchini, P ; Budano, A ; Camarri, P ; Cao, Z ; Cardarelli, R ; Catalanotti, S ; Chen, S Z et al.
The events recorded by ARGO-YBJ in more than five years of data collection have been analyzed to determine the diffuse gamma-ray emission in the Galactic plane at Galactic longitudes 25{\deg} < l < 100{\deg} and Galactic latitudes . The energy range covered by this analysis, from ~350 GeV to ~2 TeV, allows the connection of the region explored by Fermi with the multi-TeV measurements carried out by Milagro. [...]
arXiv:1507.06758.- 2015 - 11 p. - Published in : The Astrophysical Journal, 806:20 (11pp), 2015 June 10 External link: Preprint

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2015-07-27
07:26
On line contribution functions and examining spectral line formation in 3D model stellar atmospheres / Amarsi, Anish Mayur
Line contribution functions are useful diagnostics for studying spectral line formation in stellar atmospheres. I derive an expression for the contribution function to the abso- lute flux depression that emerges from three-dimensional box-in-a-star model stellar atmospheres. [...]
arXiv:1507.06741.- 2015 - 5 p. - Published in : MNRAS (September 11, 2015) 452 (2): 1612-1616 External link: Preprint

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2015-07-27
07:26
Dynamical interpretation of the wavefunction of the universe / He, Dongshan ; Gao, Dongfeng ; Cai, Qing-yu
In this paper, we study the physical meaning of the wavefunction of the universe. With the continuity equation derived from the Wheeler-DeWitt (WDW) equation in the minisuperspace model, we show that the quantity $\rho(a)=|\psi(a)|^2$ for the universe is inversely proportional to the Hubble parameter of the universe. [...]
arXiv:1507.06727.- 2015 - Published in : Phys. Lett. B 748 (2015) 361-365 External link: Preprint

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2015-07-27
07:26
Discovery and Validation of Kepler-452b: A 1.6-Re Super Earth Exoplanet in the Habitable Zone of a G2 Star / Jenkins, Jon M ; Twicken, Joseph D ; Batalha, Natalie M ; Caldwell, Douglas A ; Cochran, William D ; Endl, Michael ; Latham, David W ; Esquerdo, Gilbert A ; Seader, Shawn ; Bieryla, Allyson et al.
We report on the discovery and validation of Kepler-452b, a transiting planet identified by a search through the 4 years of data collected by NASA's Kepler Mission. This possibly rocky 1.63$^{+0.23}_{-0.20}$ R$_\oplus$ planet orbits its G2 host star every 384.843$^{+0.007}_{0.012}$ days, the longest orbital period for a small (R$_p$ < 2 R$_\oplus$) transiting exoplanet to date. [...]
arXiv:1507.06723.- 2015 - 19 p. - Published in : Astron. J. 0 (2015) 56 External link: Preprint

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2015-07-24
14:56
Complex networks and public funding: the case of the 2007-2013 Italian program / Nicotri, Stefano ; Tinelli, Eufemia ; Amoroso, Nicola ; Garuccio, Elena ; Bellotti, Roberto
In this paper we apply techniques of complex network analysis to data sources representing public funding programs and discuss the importance of the considered indicators for program evaluation. Starting from the Open Data repository of the 2007-2013 Italian Program Programma Operativo Nazionale 'Ricerca e Competitivit\`a' (PON R&C;), we build a set of data models and perform network analysis over them. [...]
arXiv:1507.06515.- 2015 - 22 p. - Published in : EPJ Data Science 2015, 4:8 External link: Preprint

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2015-07-24
14:56
Elastic Response of Mesoporous Silicon to Capillary Pressures in the Pores / Gor, Gennady Y ; Bertinetti, Luca ; Bernstein, Noam ; Fratzl, Peter ; Huber, Patrick
We study water adsorption-induced deformation of a monolithic, mesoporous silicon membrane traversed by independent channels of $\sim$8 nm diameter. We focus on the elastic constant associated with the Laplace pressure-induced deformation of the membrane upon capillary condensation, i.e. [...]
arXiv:1507.06482.- 2015 - 5 p. - Published in : Appl. Phys. Lett. 106 (2015) 261901 External link: Preprint

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