# CERN Published Articles

2018-03-20
07:50
 Energy Dependent Features of X-ray Signals in a GridPix Detector / Krieger, Christoph ; Kaminski, Jochen ; Vafeiadis, Theodoros (CERN) ; Desch, Klaus We report on the calibration of an argon/isobutane (97.7 %/2.3 %)-filled GridPix detector with soft X-rays (277 eV to 8 keV) using the variable energy X-ray source of the CAST Detector Lab at CERN. We study the linearity and energy resolution of the detector using both the number of hit pixels and the total measured charge as energy measures. [...] arXiv:1709.07631.- 2017-09-22 - 19 p. - Published in : Nucl. Instrum. Methods Phys. Res., (2018) Preprint: PDF;

2018-03-20
07:50
 A Natural extra-dimensional origin for the LHCb anomalies / Megias, Eugenio (Basque U., Bilbao ; Munich, Max Planck Inst.) ; Panico, Giuliano (Barcelona, IFAE) ; Pujolas, Oriol (Barcelona, IFAE) ; Quiros, Mariano (Barcelona, IFAE) /LHCb Collaboration We study the possibility of explaining the recently found anomalies in B-meson decays within scenarios with a composite Higgs boson. This class of models provides a natural way to fit the experimental results, interpreting the anomalies as the result of the exchange of heavy vector resonances with electroweak quantum numbers. [...] arXiv:1705.04822.- 2017-05-13 - 8 p. - Published in : (2017) , pp. 225-232 Fulltext: PDF; Preprint: PDF; In : 52nd Rencontres de Moriond on Electroweak Interactions and Unified Theories, La Thuile, Italy, 18 - 25 Mar 2017, pp.225-232

2018-03-20
07:50
 New Constraints on Sterile Neutrinos with MINOS/MINOS+ and Daya Bay / Carroll, Thomas Joseph (Texas U.) /LHC Collaboration I describe two new searches for sterile neutrino oscillations from the MINOS and Daya Bay experiments. MINOS looked for evidence through muon neutrino disappearance with data collected from the NuMI neutrino beam. [...] arXiv:1705.05064.- 2017-05-14 - 10 p. - Published in : (2017) , pp. 349-358 Fulltext: PDF; Preprint: PDF; In : 52nd Rencontres de Moriond on Electroweak Interactions and Unified Theories, La Thuile, Italy, 18 - 25 Mar 2017, pp.349-358

2018-03-20
07:50
 Precision Electroweak Measurements at Run 2 and Beyond / Erler, Jens (Mexico U.) /LHC Collaboration After reviewing the key features of the global electroweak fit, I will provide updated results and offer experimental and theoretical contexts. I will also make the case for greater precision and highlight future directions.. arXiv:1704.08330.- 2017-04-26 - 10 p. - Published in : (2017) , pp. 85-94 Fulltext: PDF; Preprint: PDF; In : 52nd Rencontres de Moriond on Electroweak Interactions and Unified Theories, La Thuile, Italy, 18 - 25 Mar 2017, pp.85-94

2018-03-16
08:03
 Experimental evidence of quantum radiation reaction in aligned crystals / Wistisen, Tobias N. (Aarhus U.) ; Di Piazza, Antonino (Heidelberg, Max Planck Inst.) ; Knudsen, Helge V. (Aarhus U.) ; Uggerhøj, Ulrik I. (Aarhus U.) Radiation reaction is the influence of the electromagnetic field emitted by a charged particle on the dynamics of the particle itself. Here we report experimental radiation emission spectra from ultrarelativistic positrons in silicon in a regime where both quantum and radiation-reaction effects dominate the dynamics of the positrons. [...] arXiv:1704.01080.- 2018-02-23 - 14 p. - Published in : Nature Commun. 9 (2018) 795 Fulltext: PDF; Preprint: PDF;

2018-03-10
16:35
 Vectorlike quarks and heavy colored bosons at the LHC / Deandrea, A. (Lyon, IPN ; IUF, Paris) ; Iyer, A.M. (INFN, Naples) We investigate the production of heavy coloured scalars and vectors and their relevance at LHC for the study of vector-like quarks ($T$). These coloured states ($C$) are present in a large number of extensions of the standard model, in particular in composite models and in extra dimensional models. [...] arXiv:1710.01515.- 2018-03-05 - 10 p. - Published in : Phys. Rev. D 97 (2018) 055002 Article from SCOAP3: PDF; Preprint: PDF;

2018-03-09
07:21
 Conceptual Design of a Large Aperture Dipole for Testing of Cables and Insert Coils at High Field / Bruzzone, Pierluigi (CRPP, Lausanne) ; Bottura, Luca (CERN) ; Cau, Francesca (Fusion for Energy, Barcelona) ; de Rijk, Gijs (CERN) ; Ferracin, Paolo (CERN) ; Minervini, Joseph (MIT) ; Portone, Alfredo (Fusion for Energy, Barcelona) ; Prestemon, Soren (LBL, Berkeley) ; Rochepault, Etienne (CERN) ; Ravaioli, Emmanuele (LBL, Berkeley) et al. Advances in the performance of low and high temperature superconductors enable the development of advanced magnets for a range of applications, including tokamaks for fusion energy, dipoles and quadrupoles for hadron colliders. The capability of testing prototype cables and insert coils at high field is critical to these developments. [...] 2017 - 5 p. - Published in : IEEE Trans. Appl. Supercond. 28 (2017) 4005505

2018-03-09
07:21
 Design, Assembly and Use of a Device to Eliminate Earth Faults Caused by Metallic Debris in the LHC Main Dipole Circuits / Bednarek, Mateusz Jakub (CERN) ; Siemko, Andrzej (CERN) ; Rodriguez-Mateos, Felix (CERN) ; Pietrzak, Pawel (AGH-UST, Cracow) ; Stachón, Krzysztof (CERN) ; D'Angelo, Giorgio (CERN) ; Pemberton, Stephen (CERN) The superconducting dipole magnets of the Large Hadron Collider operate in a superfluid helium bath at 1.9K. As a part of the magnet quench protection system, each dipole magnet is equipped with a bypass diode located in the helium bath. [...] 2017 - 1 p. - Published in : IEEE Trans. Appl. Supercond. 28 (2017) 4005805

2018-03-09
07:21
 Detailed $\alpha$-decay study of $^{180}\mathrm{Tl}$ / Andel, B (Comenius U.) ; Andreyev, A N (York U., England ; JAEA, Ibaraki ; CERN) ; Antalic, S (Comenius U.) ; Barzakh, A (St. Petersburg, INP) ; Bree, N (Leuven U.) ; Cocolios, T E (Leuven U. ; CERN) ; Comas, V F (Darmstadt, GSI) ; Diriken, J (Leuven U.) ; Elseviers, J (Leuven U.) ; Fedorov, D V (St. Petersburg, INP) et al. A detailed $\alpha$-decay spectroscopy study of $^{180}\mathrm{Tl}$ has been performed at ISOLDE (CERN). $Z$-selective ionization by the Resonance Ionization Laser Ion Source (RILIS) coupled to mass separation provided a high-purity beam of $^{180}\mathrm{Tl}$. [...] 2017 - 11 p. - Published in : Phys. Rev. C 96 (2017) 054327 Fulltext: PDF;

2018-03-08
06:53
 Determination of the maximum recording frequency by the Precision Laser Inclinometer of an earth surface angular oscillation / Azaryan, N (Dubna, JINR) ; Budagov, J (Dubna, JINR) ; Lyablin, M (Dubna, JINR) ; Pluzhnikov, A (Dubna, JINR) ; Di Girolamo, B (CERN) ; Gayde, J Ch (CERN) ; Mergelkuhl, D (CERN) For the Precision Laser Inclinometer (FPI) using the I-20A oil, a high-frequency 4 Hz boundary was determined for reliable detection of the earth’s surface angular vibrations. The proposed method makes use of the microseismic signal and its processing to expand the PLI working interval for signal reception and allows to record the narrow frequency-band signals originated by the Earth surface angular oscillations caused by industrial sources.. 2017 - 10 p. - Published in : Phys. Part. Nucl. Lett. 14 (2017) 920-929