CERN Accelerating science

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2018-04-23
15:01
Boosted Dark Matter Quarrying at Surface Neutrino Detectors / Kim, Doojin ; Kong, Kyoungchul ; Park, Jong-Chul ; Shin, Seodong
We propose the idea of "Earth Shielding" to reject cosmic-ray backgrounds, in the search for boosted dark matter at surface neutrino detectors, resulting in the enhancement of the signal-to-background ratio. [...]
CERN-TH-2018-088 ; EFI-18-5 ; arXiv:1804.07302 ; CERN-TH-2018-088 ; EFI-18-5.
- 18 p.
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2018-04-23
15:00
Bottom-quark effects in Higgs production at intermediate transverse momentum / Caola, Fabrizio ; Lindert, Jonas M. ; Melnikov, Kirill ; Monni, Pier Francesco ; Tancredi, Lorenzo ; Wever, Christopher
We provide a precise description of the Higgs boson transverse momentum distribution including top and bottom quark contributions, that is valid for transverse momenta in the range mb < pt < mt, where mb and mt are the bottom and top quark masses. [...]
IPPP/18/27 ; CERN-TH-2018-089 ; TTP-18-016 ; arXiv:1804.07632 ; IPPP-18-27 ; CERN-TH-2018-089 ; TTP-18-016.
- 28 p.
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2018-04-23
15:00
First observation of the competing fission modes in the sub-lead region / Tsekhanovich, I. (CENBG, Gradignan) ; Andreyev, A.N. (York U., England ; JAEA, Ibaraki ; CERN) ; Nishio, K. (JAEA, Ibaraki) ; Denis-Petit, D. (CENBG, Gradignan) ; Hirose, K. (JAEA, Ibaraki) ; Makii, H. (JAEA, Ibaraki) ; Matheson, Z. (Michigan State U., East Lansing (main)) ; Morimoto, K. (Nishina Ctr., RIKEN) ; Morita, K. (Nishina Ctr., RIKEN ; Kyushu U., Fukuoka (main)) ; Nazarewicz, W. (Michigan State U., East Lansing (main)) et al.
Fragment mass distributions produced in the fission of excited $^{178}$Pt -- synthesized in a complete fusion reaction $^{36}$Ar + $^{142}$Nd, at beam energies of 155, 170 and 180 MeV -- have been deduced. [...]
arXiv:1804.01832.
- 5 p.
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2018-04-23
15:00
Spectral function for overoccupied gluodynamics from real-time lattice simulations / Boguslavski, K. (Jyvaskyla U.) ; Kurkela, A. (CERN ; Stavanger U.) ; Lappi, T. (Jyvaskyla U. ; Helsinki Inst. of Phys.) ; Peuron, J. (Jyvaskyla U.)
We study the spectral properties of a highly occupied non-Abelian non-equilibrium plasma appearing ubiquitously in weak coupling descriptions of QCD matter. [...]
arXiv:1804.01966.
- 19 p.
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2018-04-23
15:00
Scaled Prototype of a Tantalum Target Embedded in Expanded Graphite for Antiproton Production: Design, Manufacturing and Testing under Proton Beam Impacts at HiRadMat / Torregrosa Martin, Claudio (CERN ; Valencia, Polytechnic U.) ; Calviani, Marco (CERN) ; Perillo-Marcone, Antonio (CERN) ; Ferriere, Romain (CERN) ; Solieri, Nicola (CERN) ; Butcher, Mark (CERN) ; Grec, Lucian-Mircea (CERN) ; Canhoto Espadanal, Joao (CERN)
This study presents a further step within the ongoing R&D activities for the redesign of the CERN's Antiproton Decelerator Production Target (AD-Target). [...]
arXiv:1803.09776.
- 11 p.
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2018-04-23
15:00
A 1 GHz RF Trigger Unit implemented in FPGA logic / Barrientos, D. (CERN) ; Molendijk, J. (CERN) ; Hagmann, G. (CERN)
Applications of Trigger Units (TU) can be found in almost all accelerators at CERN. [...]
LLRF2017/P-65 ; arXiv:1803.09041 ; LLRF2017-P-65.
- 3 p.
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2018-04-21
06:12
Particle-in-cell simulation of second and third harmonic cavity klystron / Hill, Victoria C R (Lancaster U. (main)) ; Burt, Graeme (Lancaster U. (main)) ; Constable, David (Lancaster U. (main)) ; Lingwood, Chris (Lancaster U. (main)) ; Marrelli, Chiara (ESS, Lund) ; Syratchev, Igor (CERN)
This paper outlines the results obtained from Magic software for the CSM_23 (Core Stabilization Method) klystron. [...]
2018. - 2 p.

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2018-04-20
14:41
Evidence for the decay $B_{s}^0 \rightarrow \overline{K}{}^{*0}\mu^+\mu^-$ / LHCb Collaboration
A search for the decay $B_{s}^0 \rightarrow \overline{K}{}^{*0}\mu^+\mu^-$ is presented using data sets corresponding to 1.0, 2.0 and 1.6 $\text{fb}^{-1}$ of integrated luminosity collected during $pp$ collisions with the LHCb experiment at centre-of-mass energies of 7, 8 and 13 TeV, respectively. [...]
LHCb-PAPER-2018-004 ; CERN-EP-2018-059 ; LHCB-PAPER-2018-004 ; CERN-EP-2018-059 ; arXiv:1804.07167 ; LHCB-PAPER-2018-004.
- 2018.
Fulltext - Related data file(s) - Supplementary information - Fulltext

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2018-04-20
09:45
Measurement of CP violation in the $B_s^0 \to \phi \phi$ decay and search for the $B^0 \to \phi\phi$ decay /LHCb Collaboration
A measurement of the time-dependent $CP$-violating asymmetry in $B_s^0 \to \phi\phi$ decays is presented, along with measurements of the $T$-odd triple-product asymmetries. Using a sample of proton-proton collision data corresponding to an integrated luminosity of $5.0 fb^{-1}$ collected with the LHCb detector, a signal yield of approximately 8500 $B_s^0 \to \phi\phi$ decays is obtained. [...]
LHCb-CONF-2018-001; CERN-LHCb-CONF-2018-001.- Geneva : CERN, 2018 - 25. Fulltext: CDSFigs - ZIP; LHCb-CONF-2018-001 - PDF;
In : 53rd Rencontres de Moriond on Electroweak Interactions and Unified Theories, La Thuile, Italy, 10 - 17 Mar 2018

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2018-04-20
07:34
Systematic approximation of multi-scale Feynman integrals / Borowka, Sophia ; Gehrmann, Thomas ; Hulme, Daniel
An algorithm for the systematic analytical approximation of multi-scale Feynman integrals is presented. [...]
CERN-TH-2018-078 ; ZU-TH 14/18 ; arXiv:1804.06824 ; CERN-TH-2018-078 ; ZU-TH-14-18.
- 33 p.
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