CERN Accelerating science

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2020-07-03
04:05
Simultaneous measurement of the muon neutrino charged-current cross section on oxygen and carbon without pions in the final state at T2K / T2K Collaboration
This paper reports the first simultaneous measurement of the double differential muon neutrino charged-current cross section on oxygen and carbon without pions in the final state as a function of the outgoing muon kinematics, made at the ND280 off-axis near detector of the T2K experiment. The ratio of the oxygen and carbon cross sections is also provided to help validate various models' ability to extrapolate between carbon and oxygen nuclear targets, as is required in T2K oscillation analyses. [...]
arXiv:2004.05434.- 2020-06-17 - 32 p. - Published in : Phys. Rev. D 101 (2020) 112004

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2020-07-03
04:05
Scale setting for $N_f=3+1$ QCD / Höllwieser, Roman (Wuppertal U.) ; Knechtli, Francesco (Wuppertal U.) ; Korzec, Tomasz (Wuppertal U.) /ALPHA Collaboration
We present the scale setting for a new set of gauge configurations generated with $N_f=3+1$ Wilson quarks with a non-perturbatively determined clover coefficient in a massive O($a$) improvement scheme. The three light quarks are degenerate, with the sum of their masses being equal to its value in nature and the charm quark has its physical mass. [...]
arXiv:2002.02866; WUB/20-00.- 2020-04-30 - 25 p. - Published in : Eur. Phys. J. C 80 (2020) 349 Article from SCOAP3: PDF; Fulltext: PDF;

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2020-07-01
04:14
Anomalous quartic $W^+W^-\gamma \gamma $ couplings in $e^-p$ collisions at the LHeC and the FCC-he / Ari, V. (Ankara U.) ; Gurkanli, E. (Sinop U.) ; Gutiérrez-Rodríguez, A. (Zacatecas U.) ; Hernández-Ruíz, M.A. (Zacatecas U.) ; Köksal, M. (Cumhuriyet U.)
We conducted a study on measuring $W^+W^-$ production and on the sensitivity limits at $95\%$ Confidence Level on thirteen anomalous couplings obtained by dimension-8 operators which are related to the anomalous quartic $WW\gamma\gamma$ couplings. We consider the main $e^-p \to e^-\gamma^*\gamma^*p \to e^-W^+W^-p$ reaction with the sub-process $\gamma^*\gamma^* \to W^+W^-$ at the Large Hadron electron Collider (LHeC) and the Future Circular Collider-hadron electron (FCC-he). [...]
arXiv:1911.03993.- 2020-03-30 - 28 p. - Published in : Eur. Phys. J. Plus: 135 (2020) , no. 3, pp. 336 Fulltext: PDF;

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2020-06-29
05:46
The charming beauty of the strong interaction / Tolos, Laura (Frankfurt U. ; Frankfurt U., FIAS ; Barcelona, IEEC)
Charmed and beauty hadrons in matter are discussed within a unitarized coupled-channel model consistent with heavy-quark spin symmetry. We analyse the formation of D-mesic states as well as the propagation of charmed and beauty hadrons in heavy-ion collisions from LHC to FAIR energies..
arXiv:1712.07651.- 2020 - 10 p. - Published in : 10.1007/978-3-030-34234-0_3 Preprint: PDF;

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2020-06-29
05:46
Cleaning and surface properties / Taborelli, Mauro (CERN)
Principles of the precision cleaning dedicated to ultra-high vacuum applications are reviewed together with the techniques for the evaluation of surface cleanliness. Methods to verify the effectiveness of cleaning procedures are addressed. [...]
arXiv:2006.01585.- 2006-05 - 20 p. - Published in : , pp. 321-340 Fulltext: PDF;
In : CAS - CERN Accelerator School and ALBA Synchrotron Light Facility : Course on Vacuum in Accelerators, Platja d'Aro, Spain, 16 - 24 May 2006, pp.321-340 (CERN-2007-003)

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2020-06-25
16:16
Crystal Fibers for the LHCb Calorimeter Upgrade / Martinazzoli, Loris (Universita & INFN, Milano-Bicocca (IT))
The Large Hadron Collider beauty (LHCb) experiment is one of the four main particle detectors located at the Large Hadron Collider. After the high-luminosity upgrade of the accelerator, the expected radiation dose faced by the LHCb electromagnetic calorimeter will reach peak values of 1 MGy in the centermost part, an amount not tolerable by the currently employed Shashlik technology, which demands a novel radiation hard design. [...]
LHCb-PROC-2020-004; CERN-LHCb-PROC-2020-004.- Geneva : CERN, 2020 - 6. - Published in : IEEE Trans. Nucl. Sci. 67 (2020) 1003 Fulltext: PDF;
In : 15th International Conference on Inorganic Scintillators and Their Applications, Sendai, Japan, 29 Sep - 04 Oct 2019

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2020-06-12
17:14
Structural trends in atomic nuclei from laser spectroscopy of tin / Deyan T. Yordanov, Liss V. Rodríguez ; Dimiter L. Balabanski, Jacek Bieroń, Mark L. Bissell, Klaus Blaum, Bradley Cheal, Jörgen Ekman, Gediminas Gaigalas, Ronald F. Garcia Ruiz, Georgi Georgiev, Wouter Gins, Michel R. Godefroid, Christian Gorges, Zoltán Harman, Hanne Heylen, Per Jönsson, Anastasios Kanellakopoulos, Simon Kaufmann, Christoph H. Keitel, Varvara Lagaki, Simon Lechner, Bernhard Maaß, Stephan Malbrunot-Ettenauer, Witold Nazarewicz, Rainer Neugart, Gerda Neyens, Wilfried Nörtershäuser, Natalia S. Oreshkina, Asimina Papoulia, Pekka Pyykkö, Paul-Gerhard Reinhard, Stefan Sailer, Rodolfo Sánchez, Sacha Schiffmann, Stefan Schmidt, Laura Wehner, Calvin Wraith, Liang Xie, Zhengyu Xu & Xiaofei Yang /IS573 Collaboration
Tin is the chemical element with the largest number of stable isotopes. Its complete proton shell, comparable with the closed electron shells in the chemically inert noble gases, is not a mere precursor to extended stability; since the protons carry the nuclear charge, their spatial arrangement also drives the nuclear electromagnetism [...]
- Published in : 10.1038/s42005-020-0348-9 Accepted Author Manuscript: PDF;

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2020-06-09
18:09
Dynamic coupling between particle-in-cell and atomistic simulations / Veske, Mihkel (Helsinki U.) ; Kyritsakis, Andreas (Helsinki U.) ; Sjobak, Kyrre Ness (CERN ; Oslo U.) ; Zadin, Vahur (Tartu U.) ; Aabloo, Alvo (Tartu U.) ; Djurabekova, Flyura (Helsinki U.)
We propose a method to directly couple molecular dynamics, finite element method and particle-in-cell techniques to simulate metal surface response to high electric fields. We use this method to simulate the evolution of a field emitting tip under thermal runaway by fully including the 3D space-charge effects. [...]
arXiv:1906.08125.- 2019-05-24 - 16 p. - Published in : Phys. Rev. E 101 (2020) 053307 Fulltext: PDF;

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2020-06-08
15:44
First test results of the CHIPIX65 asynchronous front-end connected to a 3D sensor / Gaioni, L. (Universita di Bergamo) ; De Canio, F. (Universita di Pavia, INFN Pavia) ; Manghisoni, M. (Universita di Bergamo, INFN Pavia) ; Ratti, L. (Universita di Pavia, INFN Pavia) ; Re, V. (Universita di Bergamo, INFN Pavia) ; Sonzogni, M. (Universita di Bergamo, INFN Pavia) ; Traversi, G. (Universita di Bergamo, INFN Pavia)
This work reports on the main results from the experimental characterization of the asynchronous analog front-end integrated in a 65 nm CMOS mixed-signal chip for the readout of high granularity silicon pixel sensors at the high-luminosity upgrades of the ATLAS and CMS experiments. Such a mixed-signal chip has been designed and submitted in the framework of the CHIPIX65 project, funded by the Italian Institute of Nuclear Physics for the development of an advanced pixel chip in a 65 nm CMOS technology. [...]
AIDA-2020-PUB-2020-010.- Geneva : CERN, 2020 - Published in : Nuclear Instruments and Methods A Fulltext: PDF;

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2020-06-03
13:12
A Light Calibration System for the ProtoDUNE-DP Detector / Cuesta, C. (CIEMAT) ; Belver, D. (CIEMAT) ; Boix, J. (IFAE) ; Calvo, E. (CIEMAT) ; Gallego-Ros, A. (CIEMAT) ; Gil-Botella, I. (CIEMAT) ; Jiménez, S. (CIEMAT) ; Lastoria, C. (CIEMAT) ; Lux, T. (IFAE) ; Martin, I. (CIEMAT) et al.
A LED-based fiber calibration system for the ProtoDUNE-Dual Phase (DP) photon detection system (PDS) has been designed and validated. ProtoDUNE-DP is a 6x6x6 m3 liquid argon time-projection-chamber (LAr TPC) currently being installed at the Neutrino Platform at CERN. [...]
AIDA-2020-PUB-2020-009.- Geneva : CERN, 2020 Fulltext: PDF;

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