# CERN Preprints

Posledne pridané:
2019-09-19
07:44
 Search for squarks and gluinos in final states with same-sign leptons and jets using 139 fb$^{-1}$ of data collected with the ATLAS detector A search for supersymmetric partners of gluons and quarks is presented, involving signatures with jets and either two isolated leptons (electrons or muons) with the same electric charge, or at least three isolated leptons. [...] CERN-EP-2019-161. - 2019. Fulltext - Previous draft version

2019-09-18
05:21
 Beam impact tests of a prototype target for the Beam Dump Facility at CERN: experimental setup and preliminary analysis of the online results / Lopez Sola, E. (CERN) ; Calviani, M. (CERN) ; Aberle, O. (CERN) ; Ahdida, C. (CERN) ; Avigni, P. (CERN) ; Battistin, M. (CERN) ; Bianchi, L. (CERN) ; Burger, S. (CERN) ; Busom Descarrega, J. (CERN) ; Canhoto Espadanal, J. (CERN) et al. The Beam Dump Facility (BDF) is a project for a new facility at CERN dedicated to high intensity beam dump and fixed target experiments. [...] arXiv:1909.07094. - Fulltext

2019-09-18
05:20
 New Results from the Cosmic-Ray Program of the NA61/SHINE facility at the CERN SPS / Unger, Michael The NA61/SHINE experiment at the SPS accelerator at CERN is a unique facility for the study of hadronic interactions at fixed target energies. [...] arXiv:1909.07136. - Fulltext

2019-09-18
05:20
 Study of $\pmb{R_{\rm AA}}$ and $\pmb{v_2}$ of non-strange D mesons and D-jet production in Pb-Pb collisions with ALICE / Grosa, Fabrizio Heavy quarks are sensitive probes of the colour-deconfined medium formed in ultra-relativistic heavy-ion collisions, the Quark-Gluon Plasma (QGP). [...] arXiv:1909.06562. - 6 p. Fulltext

2019-09-17
15:00
 Increasing Windows security by hardening PC configurations / Martin Zamora, Pablo (CERN) ; Kwiatek, Michal (CERN) ; Bippus, Vincent Nicolas (CERN) ; Cruz Elejalde, Eneko (Universidad de Oviedo (ES)) Over 8000 Windows PCs are actively used on the CERN site for tasks ranging from controlling the accelerator facilities to processing invoices. [...] CERN-IT-2019-003 ; Poster-2018-664. - 2019. - 8 p. Full text

2019-09-17
11:15
 CP-violating Higgs-gauge boson couplings in $H\nu \bar{\nu}$ production at three energy stages of CLIC / Karadeniz, Ozgun (Bolu Abant Izzet Baysal University) ; Senol, Abdulkadir (Abant Izzet Baysal University (TR)) ; Oyulmaz, Kaan Yuksel (Abant Izzet Baysal University (TR)) ; Denizli, Haluk (Ankara University Institute of Accelerator Technologies (TR)) A phenomenological study of CP-violating dimension-six operators via the $e^+e^−$ → $\nu \bar{\nu} H$ process is performed in a model-independent Standard Model effective field theory framework at all energy stages of CLIC using the updated baseline integrated luminosities. All signal and relevant background events are generated in MadGraph5_aMC@NLO and passed through PYTHIA 8 for parton showering and hadronization at parton level. [...] CLICdp-Pub-2019-004.- Geneva : CERN, 2019 - 17. Fulltext: PDF;

2019-09-17
05:43
 Bayesian unfolding of charged particle $p_{\mathrm{T}}$ spectra with ALICE at the LHC / Krüger, Mario The study of the Quark-Gluon Plasma created in ultrarelativistic heavy-ion collisions at the CERN-LHC is complemented by reference measurements in proton-lead (p--Pb) and proton-proton (pp) collisions, where the effects of multiple-parton interactions and hadronization beyond independent string fragmentation can be investigated. [...] arXiv:1909.06109. - Fulltext

2019-09-16
15:22
 Strong constraints on the $K^0_s \to \mu^+ \mu^-$ branching fraction /LHCb Collaboration A search for the decay $K^0_s \to \mu^+ \mu^-$ is performed using proton-proton collision data, corresponding to an integrated luminosity of $5.6 \, \text {fb}^{-1}$, collected with the LHCb experiment during 2016, 2017 and 2018 at a center-of-mass energy of $13\,\mathrm{TeV}$. The observed number of signal decays is consistent with zero, yielding an upper limit of $\mathcal {B}( K^0_s \to \mu^+ \mu^-) < 2.2\,(2.6)\times 10^{-10}$ at $90$ $(95)\% ~\text {CL}$ [...] LHCb-CONF-2019-002; CERN-LHCb-CONF-2019-002.- Geneva : CERN, 2019 - 9. Fulltext: PDF; In : International Conference on Kaon Physics 2019, Perugia, Italy, 10 - 13 Sep 2019

2019-09-14
05:19
 Cosmological Parameters from the BOSS Galaxy Power Spectrum / Ivanov, Mikhail M. ; Simonović, Marko ; Zaldarriaga, Matias We present cosmological parameter measurements from the publicly available Baryon Oscillation Spectroscopic Survey (BOSS) data on anisotropic galaxy clustering in Fourier space. [...] arXiv:1909.05277 ; INR-TH-2019-016 ; CERN-TH-2019-132. - 50 p. Fulltext

2019-09-14
05:19
 Strangeness Production in Jets and Underlying Events in pp Collisions at $\sqrt{s}$ = 13 TeV with ALICE / Cui, Pengyao The production of $\mathrm{K^0_S}$, $\Lambda$ and $\Xi$ is measured in jets and underlying events in pp collisions at $\sqrt{s}$ = 13 TeV with ALICE detectors. [...] arXiv:1909.05471. - 4 p. Fulltext