CERN Accelerating science

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2019-07-16
08:37
Mass measurements of neutron-rich isotopes near N=20 by in-trap decay with the ISOLTRAP spectrometer / Ascher, P (CENBG, Gradignan) ; Althubiti, N (U. Manchester (main) ; Al Jouf U.) ; Atanasov, D (Heidelberg, Max Planck Inst.) ; Blaum, K (Heidelberg, Max Planck Inst.) ; Cakirli, R B (Istanbul U.) ; Grévy, S (CENBG, Gradignan) ; Herfurth, F (Darmstadt, GSI) ; Kreim, S (Heidelberg, Max Planck Inst.) ; Lunney, D (CSNSM, Orsay) ; Manea, V (CERN) et al.
The masses of $^{34}$Si, $^{33,34}$Mg, and $^{34}$Al have been measured with the ISOLTRAP Penning-trap spectrometer at ISOLDE/CERN. The results are in agreement with previous mass measurements and uncertainties have been decreased. [...]
2019 - 9 p. - Published in : Phys. Rev. C 100 (2019) 014304

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2019-07-16
08:37
Harnessing the Power of Threat Intelligence in Grids and Clouds: WLCG SOC Working Group / Crooks, David (Glasgow U.) ; Vlsan, Liviu (CERN) ; Mohammad, Kashif (Oxford U.) ; Carabas, Mihai (Bucharest, Polytechnic Inst.) ; McKee, Shawn (Michigan U.) ; Trinder, Jon (Glasgow U.) /WLCG SOC Working Group
The modern security landscape affecting Grid and Cloud sites is evolving to include possible threats from a range of avenues, including social engineering as well as more direct approaches. An effective strategy to defend against these risks must include cooperation between security teams in different contexts. [...]
2018 - 12 p. - Published in : PoS ISGC2018 & FCDD (2018) 012 Fulltext: PDF;

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2019-07-16
08:37
The new inner tracking system for the ALICE upgrade at the LHC / Di Mauro, A (CERN) /ALICE
ALICE, the CERN LHC experiment devoted to the study of the QGP (Quark–Gluon Plasma) properties, will undergo a comprehensive upgrade during the second long shutdown of the LHC (in 2019–2020) to enhance the capability for high precision measurements of rare processes at low transverse momenta ($P_{T}$). One of the key elements of the upgrade strategy is the novel, high-resolution, ultra-light Inner Tracking System (ITS) consisting of seven concentric layers of Monolithic Active Pixel Sensors (MAPS) covering a total active area of 10 m$^{2}$ segmented in 12.5 Gpixels. [...]
2019 - 5 p. - Published in : Nucl. Instrum. Methods Phys. Res., A 936 (2019) 625-629
In : Frontier Detectors for Frontier Physics XIV Pisa Meeting on Advanced Detectors, La Biodola, Isola D'elba, Italy, 27 May - 2 Jun 2018, pp.625-629

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2019-07-16
08:37
Results on $b$ hadron properties in CMS / Madlener, Thomas (Vienna, OAW) /CMS
The lifetime is among the fundamental properties of particles and is one of the important observables in heavy hadrons allowing to test the theoretical tools describing their physics. This report presents lifetime measurements of $B^0,B_{s}^{0},\Lambda _{b}^{0}$ and $B_{c}^{+}$ hadrons performed on data, corresponding to 19.7 fb$-^{1}$, collected by the CMS experiment at the LHC at a center-of-mass energy of √s = 8 TeV. [...]
2018 - 10 p. - Published in : EPJ Web Conf. 181 (2018) 01023 Fulltext: PDF;
In : International Conference on Exotic Atoms and Related Topics, Vienna, Austria, 11 - 15 Sep 2017, pp.01023

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2019-07-16
08:37
Precision laser spectroscopy experiments on antiprotonic helium / Hori, Masaki (Munich, Max Planck Inst. Quantenopt.)
At CERN‘s Antiproton Decelerator (AD) facility, the Atomic Spectroscopyand Collisions Using Slow Antiprotons (ASACUSA) collaboration is carrying out precise laser spectroscopy experiments on antiprotonic helium ($\bar{p}He^+\equiv \bar{p} + He^{2+}+e^-$) atoms. By employing buffer-gas cooling techniquesin a cryogenic gas target, samples of atoms were cooled to temperatureT = 1.5–1.7 K, thereby reducing the Doppler width in the single-photon resonance lines. [...]
2018 - 7 p. - Published in : EPJ Web Conf. 181 (2018) 01001 Fulltext: PDF;
In : International Conference on Exotic Atoms and Related Topics, Vienna, Austria, 11 - 15 Sep 2017, pp.01001

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2019-07-16
08:37
NA62 and NA48/2 results on search for Heavy Neutral Leptons / Lamanna, Gianluca (INFN, Pisa ; Pisa U.) ; Aliberti, R (INFN, Pisa ; Pisa U.) ; Ambrosino, F (INFN, Pisa ; Pisa U.) ; Ammendola, R (INFN, Pisa ; Pisa U.) ; Angelucci, B (INFN, Pisa ; Pisa U.) ; Antonelli, A (INFN, Pisa ; Pisa U.) ; Anzivino, G (INFN, Pisa ; Pisa U.) ; Arcidiacono, R (INFN, Pisa ; Pisa U.) ; Barbanera, M (INFN, Pisa ; Pisa U.) ; Biagioni, A (INFN, Pisa ; Pisa U.) et al. /NA62
In this paper we present new results on upper limits for the search of Heavy Neutral Leptons (HNL) with data collected by NA48/2 (2003-2004), NA62-RK (2007) and NA62 (2015) CERN experiments. The data collected with different trigger configuration allow to search for both long and short living heavy neutrinos in the mass range below the kaon mass. [...]
2018 - 6 p. - Published in : EPJ Web Conf. 179 (2018) 01009 Fulltext: PDF;
In : Flavour changing and conserving processes, Anacapri, Italy, 7 - 9 Sep 2017, pp.01009

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2019-07-16
08:37
The SHiP physics program / De Lellis, Giovanni (INFN, Naples ; Naples U.)
The discovery of the Higgs boson has fully confirmed the Standard Model of particles and fields. Nevertheless, there are still fundamental phenomena, like the existence of dark matter and the baryon asymmetry of the Universe, which deserve an explanation that could come from the discovery of new particles. [...]
2018 - 6 p. - Published in : EPJ Web Conf. 179 (2018) 01002 Fulltext: PDF;
In : Flavour changing and conserving processes, Anacapri, Italy, 7 - 9 Sep 2017, pp.01002

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2019-07-16
05:01
HVP contribution of the light quarks to the muon $(g - 2)$ including isospin-breaking corrections with Twisted-Mass fermions / Giusti, Davide (Rome III U. ; INFN, Rome3) ; Lubicz, Vittorio (Rome III U. ; INFN, Rome3) ; Martinelli, Guido (Rome U. ; INFN, Rome) ; Sanfilippo, Francesco (INFN, Rome3) ; Simula, Silvano (INFN, Rome3) ; Tarantino, Cecilia (Rome III U. ; INFN, Rome3)
We present a preliminary lattice calculation of the leading-order electromagnetic and strong isospin-breaking corrections to the Hadronic Vacuum Polarization (HVP) contribution of the light quarks to the anomalous magnetic moment of the muon. The results are obtained in the quenched-$QED$ approximation using the $QCD$ gauge configurations generated by the European Twisted Mass Collaboration (ETMC) with $N_f = 2 + 1 + 1$ dynamical quarks, at three values of the lattice spacing varying from $0.089$ to $0.062 ~ \mbox{fm}$, at several lattice volumes and with pion masses in the range $M_\pi \simeq 220 \div 490 ~ \mbox{MeV}$..
arXiv:1810.05880.- SISSA, 2019-05-29 - 7 p. - Published in : PoS LATTICE2018 (2018) 140 Fulltext: PoS(LATTICE2018)140 - PDF; 1810.05880 - PDF;
In : 36th International Symposium on Lattice Field Theory, East Lansing, MI, USA, 22 - 28 Jul 2018, pp.140

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2019-07-12
06:40
Superheavy dark matter / Riotto, Antonio (CERN)
1999 - 20 p. - Published in : (1999) , pp. 217-237
In : 8th International Workshop on Neutrino Telescopes, v.2, Venice, Italy, 23 - 26 Feb 1999, pp.217-237

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2019-07-11
06:00
Design studies of a compact superconducting rf crab cavity for future colliders using Nb/Cu technology / Papke, K (CERN) ; Carvalho, A A (CERN) ; Zanoni, C (CERN) ; Grudiev, A (CERN)
The design of a compact crab cavity using Nb/Cu technology is presented. The cavity shape is based on a ridged waveguide resonator with wide-open apertures to provide access to the inner surface of the cavity and facilitate coating. [...]
2019 - 14 p. - Published in : Phys. Rev. Accel. Beams 22 (2019) 072001 Fulltext: PDF;

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