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2017-07-25
06:03
Novel Muon Identification Algorithms for the LHCb upgrade / Cogoni, V (CERN ; INFN, Cagliari ; Cagliari U.)
After the second Long Shutdown of the LHC scheduled for 2020, LHCb will operate at an istantaneous luminosity of $2·10^{33} cm^{−2}s^{−1}$ and at a centre of mass energy of 14 TeV. In this context, an overview of the possible new algorithms for the muon identification for the LHCb Upgrade is illustrated here. [...]
2017 - 3 p. - Published in : Nuovo Cimento C: 40 (2017) , no. 1, pp. 44 Fulltext: PDF;
In : 15th Incontri di Fisica delle Alte Energie, Genoa, Italy, 30 Mar - 1 Apr 2016, pp.44

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2017-07-25
06:03
b-hadron semileptonic decays with $\tau$ leptons in final states in LHCb / Gianluca Siddi, Benedetto (CERN ; INFN, Ferrara ; Ferrara U.) /LHCb
Lepton universality, described in the Standard Model, predicts equal coupling between gauge bosons and the three lepton families. SM extensions give additional interactions, implying in some cases a stronger coupling with the third generation of leptons. [...]
2017 - 3 p. - Published in : Nuovo Cimento C: 40 (2017) , no. 1, pp. 40 Fulltext: PDF;
In : 15th Incontri di Fisica delle Alte Energie, Genoa, Italy, 30 Mar - 1 Apr 2016, pp.40

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2017-07-25
06:03
Prototyping of hybrids and modules for the forward silicon strip tracking detector for the ATLAS Phase-II upgrade / Kuehn, S (CERN) ; Benítez, V (Barcelona, Inst. Microelectron.) ; Fernández-Tejero, J (Barcelona, Inst. Microelectron.) ; Fleta, C (Barcelona, Inst. Microelectron.) ; Lozano, M (Barcelona, Inst. Microelectron.) ; Ullán, M (Barcelona, Inst. Microelectron.) ; Lacker, H (Humboldt U., Berlin) ; Rehnisch, L (Humboldt U., Berlin) ; Sperlich, D (Humboldt U., Berlin) ; Ariza, D (DESY) et al.
For the High-Luminosity upgrade of the Large Hadron Collider an increased instantaneous luminosity of up to 7.5 ⋅ $10^{34} cm^{−2} s^{−1}$, leading to a total integrated luminosity of up to 3000 $fb^{−1}$, is foreseen. The current silicon and transition radiation tracking detectors of the ATLAS experiment will be unable to cope with the increased track densities and radiation levels, and will need to be replaced. [...]
2017 - 27 p. - Published in : JINST 12 (2017) P05015

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2017-07-25
06:03
Highlights from ALICE / Giubellino, Paolo (INFN, Turin ; CERN)
The LHC has delivered for the first time collisions of Nuclei in November 2010, at an energy of 2.76 TeV per nucleon pair, which represents a jump of more than an order of magnitude over the highest energy nuclear collisions ever studied before. The high energy, the quality of the state-of-the art detectors, and the readiness of the experimental collaborations at the LHC have allowed a rich harvest of important scientific results. [...]
2017 - 20 p. - Published in : Subnucl. Ser. 52 (2017) 249-268

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2017-07-25
06:03
Complexity and new Physics / Zichichi, Antonino (Vatican Pontifical Acad. Sci. ; INFN, Bologna ; U. Bologna, DIFA ; CERN ; Enrico Fermi Ctr., Rome ; World Lab., Geneva)
Complexity is ill-defined: more than 60 definitions of Complexity exist. The simplest one is not followed by the Logic of Nature: two examples are GUT and Supersymmetry. [...]
2017 - 20 p. - Published in : Subnucl. Ser. 52 (2017) 343-362

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2017-07-25
06:03
Integrated Operational Dosimetry System at CERN / Dumont, Gérald (CERN) ; Baltasar Dos Santos Pedrosa, Fernando (CERN) ; Carbonez, Pierre (CERN) ; Forkel-Wirth, Doris (CERN) ; Ninin, Pierre (CERN) ; Fuentes, Eloy Reguero (CERN) ; Roesler, Stefan (CERN) ; Vollaire, Joachim (CERN)
CERN, the European Organization for Nuclear Research, upgraded its operational dosimetry system in March 2013 to be prepared for the first Long Shutdown of CERN's facilities. The new system allows the immediate and automatic checking and recording of the dosimetry data before and after interventions in radiation areas. [...]
2017 - 7 p. - Published in : Radiat. Prot. Dosim. 173 (2017) 233-239

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2017-07-25
06:03
High-gradient breakdown studies of an X -band Compact Linear Collider prototype structure / Wu, Xiaowei (Tsinghua U., Beijing ; Tsinghua U., Beijing, KLPRI) ; Shi, Jiaru (Tsinghua U., Beijing ; CERN ; Tsinghua U., Beijing, KLPRI) ; Chen, Huaibi (Tsinghua U., Beijing) ; Shao, Jiahang (Tsinghua U., Beijing ; Tsinghua U., Beijing, KLPRI) ; Abe, Tetsuo (KEK, Tsukuba) ; Higo, Toshiyasu (KEK, Tsukuba) ; Matsumoto, Shuji (KEK, Tsukuba) ; Wuensch, Walter (CERN)
A Compact Linear Collider prototype traveling-wave accelerator structure fabricated at Tsinghua University was recently high-gradient tested at the High Energy Accelerator Research Organization (KEK). This X-band structure showed good high-gradient performance of up to 100  MV/m and obtained a breakdown rate of $1.27×10^{−8}$ per pulse per meter at a pulse length of 250 ns. [...]
2017 - 11 p. - Published in : Phys. Rev. Accel. Beams 20 (2017) 052001 Fulltext: PDF;

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2017-07-25
06:03
Performance and operation of the calorimetric trigger processor of the NA62 experiment at CERN SPS / Ammendola, R (Rome U., Tor Vergata) ; Barbanera, M (Pisa U. ; INFN, Pisa) ; Battista, D (Rome U., Tor Vergata) ; Bizzarri, M (Perugia U.) ; Bonaiuto, V (Rome U., Tor Vergata) ; Ceccucci, A (CERN) ; Checcucci, B (INFN, Perugia) ; Simone, N De (CERN) ; Fantechi, R (CERN) ; Federici, L (Rome U., Tor Vergata ; INFN, Rome2) et al.
The NA62 experiment at the CERN SPS aims at measuring the branching ratio of the very rare kaon decay $K^+ \to π^+ ν \bar {\nu}$ (expected $10^{-10}$) with a 10% background. Since an high-intensity kaon beam is required to collect enough statistics, the Level-0 trigger plays a fundamental role in both the background rejection and in the particle identification. [...]
2017 - 14 p. - Published in : JINST 12 (2017) C04020
In : Topical Workshop on Electronics for Particle Physics, Karlsruhe, Germany, 26 - 30 Sep 2016, pp.C04020

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2017-07-25
06:03
Multiloop Corrections to Rare $B$ Decays / Misiak, Mikołaj (CERN ; Warsaw U.)
Multiloop calculations that matter for low-energy flavour physics are of two generic types. The first-type ones allow us to determine the Wilson coefficients in the effective theory of interest [...]
2017 - 6 p. - Published in : Nucl. Part. Phys. Proc. 285-286 (2017) 63-68
In : Sixth Workshop on Theory, Phenomenology and Experiments in Flavour Physics, Anacapri, Island Of Capri, Italy, 11 - 13 Jun 2016, pp.63-68

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2017-07-24
13:17
Archive
Published in: CERN Courier Volume 57, Number 6, July-August 2017
Geneva : CERN, 2017

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