# CERN Preprints

უკანასკნელი დამატებები:
2020-03-27
06:00
 A GEMPix‐based Integrated System for Measurements of 3D Dose Distributions in Water for Carbon Ion Scanning Beam Radiotherapy / Leidner, J (CERN ; RWTH Aachen U.) ; Ciocca, M (Unlisted, IT) ; Mairani, A (HITS, Heidelberg) ; Murtas, F (CERN ; Frascati) ; Silari, M (CERN) This paper demonstrates the capability of the GEMPix detector to measure the 3D dose distribution of carbon ions in water for a clinical pencil beam reliably. [...] 2020.

2020-03-27
04:14
 Process Quality Control Strategy for the Phase-2 Upgrade of the CMS Outer Tracker and High Granularity Calorimeter / Hinger, Viktoria Between 2025 and 2027, some essential components of the CMS (Compact Muon Solenoid) detector - most notably the tracker and the calorimeter endcap - will be upgraded to prepare for HL-LHC (High Luminosity Large Hadron Collider) conditions. [...] arXiv:2003.11092. - 6 p. Fulltext

2020-03-27
04:14
 Resonant Contributions to Three-body $B\to KKK$ Decays in Perturbative QCD Approach / Zou, Zhi-Tian (Yantai U.) ; Li, Ying (Peking U., CHEP) ; Li, Qi-Xin (Yantai U.) ; Liu, Xin (Xuzhou Normal U.) In this work, we study the ($S$, $P$ and $D$)-wave $K^+K^-$ contributions to $B\to KKK$ decays in the perturbative QCD approach at leading order. [...] arXiv:2003.03754. - 28 p. Fulltext

2020-03-27
04:12
 Triggering long-lived particles in HL-LHC and the challenges in the first stage of the trigger system / Bhattacherjee, Biplob (Bangalore, Indian Inst. Sci.) ; Mukherjee, Swagata (Aachen, Tech. Hochsch.) ; Sengupta, Rhitaja (Bangalore, Indian Inst. Sci.) ; Solanki, Prabhat (Bangalore, Indian Inst. Sci.) Triggering long-lived particles at the first stage of the trigger system is very crucial in LLP searches to ensure that we do not miss them at the very beginning. [...] arXiv:2003.03943. - 65 p. Fulltext

2020-03-27
04:11
 The Cesium Source Calibration and Monitoring System of the ATLAS Tile Calorimeter: Design, Construction and Results / Blanchot, G. (Barcelona, IFAE) ; Bosman, M. (Barcelona, IFAE) ; Budagov, J. (Dubna, JINR) ; Cavalli-Sforza, M. (Barcelona, IFAE) ; Efthymiopoulos, I. (CERN) ; Isaev, A. ; Ivanyushenkov, Y. (Barcelona, IFAE) ; Karyukhin, A. ; Kopikov, S. ; Nessi, M. (CERN) et al. This article describes the design, construction and use of a calibration and monitoring system, based on movable 137Cs gamma-ray sources, for the ATLAS Tile Calorimeter (TileCal). [...] arXiv:2002.12800. - 46 p. Fulltext

2020-03-26
16:38
 Measurements of the production cross-section for a $Z$ boson in association with $b$-jets in proton$-$proton collisions at $\sqrt{s} = 13$ TeV with the ATLAS detector This paper presents a measurement of the production cross-section of a $Z$ boson in association with $b$-jets, in proton$-$proton collisions at $\sqrt{s} = 13$ TeV with the ATLAS experiment at the Large Hadron Collider using data corresponding to an integrated luminosity of 35.6 fb$^{-1}$. [...] CERN-EP-2020-022. - 2020. Fulltext - Previous draft version

2020-03-26
16:28
 Search for long-lived, massive particles in events with a displaced vertex and a muon with large impact parameter in $pp$ collisions at $\sqrt{s} = 13$ TeV with the ATLAS detector A search for long-lived particles decaying into hadrons and at least one muon is presented. [...] CERN-EP-2019-219. - 2020. Fulltext - Previous draft version

2020-03-26
04:20
 Generalizing the relativistic quantization condition to include all three-pion isospin channels / Hansen, Maxwell T. ; Romero-López, Fernando ; Sharpe, Stephen R. We present a generalization of the relativistic, finite-volume, three-particle quantization condition for non-identical pions in isosymmetric QCD. [...] arXiv:2003.10974 ; CERN-TH-2020-045. - 46 p. Fulltext

2020-03-26
04:18
 Fast inference of Boosted Decision Trees in FPGAs for particle physics / Summers, Sioni (CERN) ; Guglielmo, Giuseppe Di (Columbia U.) ; Duarte, Javier (Fermilab) ; Harris, Philip (MIT) ; Hoang, Duc (Rhodes Coll.) ; Jindariani, Sergo (Fermilab) ; Kreinar, Edward (HawkEye360, Herndon) ; Loncar, Vladimir (CERN ; Belgrade, Inst. Phys.) ; Ngadiuba, Jennifer (CERN) ; Pierini, Maurizio (CERN) et al. We describe the implementation of Boosted Decision Trees in the hls4ml library, which allows the translation of a trained model into FPGA firmware through an automated conversion process. [...] arXiv:2002.02534. - 14 p. Fulltext

2020-03-25
12:31
 Measurements of $\mathrm{t}\bar{\mathrm{t}}$+jets, $\mathrm{t}\bar{\mathrm{t}}\mathrm{b}\bar{\mathrm{b}}$ and $\mathrm{t}\bar{\mathrm{t}}\mathrm{t}\bar{\mathrm{t}}$ production with CMS / Wertz, Sebastien (Zurich U.) /CMS Collaboration Recent inclusive and differential cross section measurements of top quark pair production in association with jets and b jets are presented. The measurements are confronted with several theoretical predictions. [...] CMS-CR-2019-158.- Geneva : CERN, 2019 - 8 p. Fulltext: PDF; In : European Physical Society Conference on High Energy Physics (EPS-HEP) 2019, Ghent, Belgium, 10 - 17 Jul 2019