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CERN Preprints

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2020-01-26
04:49
Unravelling the complex behavior of Mrk 421 with simultaneous X-ray and VHE observations during an extreme flaring activity in April 2013 / MAGIC Collaboration
We report on a multi-band variability and correlation study of the TeV blazar Mrk 421 during an exceptional flaring activity observed from 2013 April 11 to 2013 April 19. [...]
arXiv:2001.08678. - 46 p.
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2020-01-25
05:17
Design and construction of a new detector to measure ultra-low radioactive-isotope contamination of argon / DarkSide Collaboration
Large liquid argon detectors offer one of the best avenues for the detection of galactic weakly interacting massive particles (WIMPs) via their scattering on atomic nuclei. [...]
arXiv:2001.08106. - 13 p.
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2020-01-25
05:17
A fast and efficient SIMD track reconstruction algorithm for the LHCb Upgrade 1 VELO-PIX detector / Hennequin, Arthur (CERN ; UPMC, Paris (main)) ; Couturier, Benjamin (CERN) ; Gligorov, Vladimir (Paris U., VI-VII) ; Ponce, Sebastien (CERN) ; Quagliani, Renato (Paris U., VI-VII) ; Lacassagne, Lionel (UPMC, Paris (main))
The upgraded CERN LHCb detector, due to start data taking in 2021, will have to reconstruct 4 TB/s of raw detector data in real time using commodity processors. [...]
arXiv:1912.09901. - 22 p.
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2020-01-24
04:39
Deep Neural Network application: Higgs boson CP state mixing angle in $H \to \tau \tau$ decay and at LHC / Lasocha, K. (Jagiellonian U. ; CERN) ; Richter-Was, E. (Jagiellonian U.) ; Sadowski, M. (Jagiellonian U.) ; Was, Z. (Cracow, INP)
The consecutive steps of cascade decay initiated by H to tau tau can be useful for the measurement of Higgs couplings and in particular of the Higgs boson parity. [...]
arXiv:2001.00455 ; IFJPAN-IV-2019-19. - 21 p.
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2020-01-24
04:39
Nonperturbative Mellin Amplitudes: Existence, Properties, Applications / Penedones, Joao (EPFL, Lausanne, FSL) ; Silva, Joao A. (EPFL, Lausanne, FSL) ; Zhiboedov, Alexander (CERN)
We argue that nonperturbative CFT correlation functions admit a Mellin amplitude representation [...]
arXiv:1912.11100. - 117 p.
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2020-01-23
04:50
Colour-Twist Operators I: Spectrum and Wave Functions / Cavaglia, Andrea ; Grabner, David ; Gromov, Nikolay ; Sever, Amit
We introduce a new class of operators in any theory with a 't Hooft large-$N$ limit that we call colour-twist operators. [...]
arXiv:2001.07259 ; CERN-TH-2020-012. - 66 p.
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2020-01-23
04:50
Measuring the top energy asymmetry at the LHC: QCD and SMEFT interpretations / Basan, Alexander ; Berta, Peter ; Masetti, Lucia ; Vryonidou, Eleni ; Westhoff, Susanne
The energy asymmetry in top-antitop-jet production is an observable of the top charge asymmetry designed for the LHC. [...]
arXiv:2001.07225 ; P3H-20-004 ; CERN-TH-2020-010. - 24 p.
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2020-01-23
04:50
Dispersive and Absorptive CP Violation in $D^0- \overline{D^0}$ Mixing / Kagan, Alexander L. ; Silvestrini, Luca
In the precision era, CP violation in $D-\bar D$ mixing is ideally described in terms of the dispersive and absorptive phases $\phi_f^M$ and $\phi_f^\Gamma$, parametrizing CP violation (CPV) in the interference of $D^0$ decays with and without dispersive (absorptive) mixing. [...]
arXiv:2001.07207 ; CERN-TH-2020-011. - 27 p.
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2020-01-22
06:49
The Timepix3 Telescope and Sensor R&D; for the LHCb VELO Upgrade / Dall'Occo, Elena (Nikhef, Amsterdam)
The VErtex LOcator (VELO) of the LHCb detector is going to be replaced in the context of a major upgrade of the experiment planned for 2019-2020. [...]
2019. - 8 p.

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2020-01-22
04:00
First experimental investigation of the running of the top quark mass / Defranchis, Matteo M.
The first experimental investigation of the running of the top quark mass is presented. [...]
arXiv:2001.04685. -
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