# CERN Preprints

Nyeste elementer:
2020-11-25
14:42
 Measurement of the CKM angle $\gamma$ and $B_s^0-\overline{B_s^0}$ mixing frequency with $B_s^0 \to D_s^{\mp} h^{\pm} \pi^{\pm}\pi^{\mp}$ decays The CKM angle $\gamma$ is measured for the first time from mixing-induced $CP$ violation between $B^0_s \rightarrow D_s^\mp K^\pm \pi^\pm \pi^\mp$ and $\bar{B}^0_s \rightarrow D_s^\pm K^\mp \pi^\mp \pi^\pm$ decays reconstructed in proton-proton collision data corresponding to an integrated luminosity of 9 ${\rm fb}^{-1}$ recorded with the LHCb detector. [...] CERN-EP-2020-214 ; LHCB-PAPER-2020-030. - 2020. Fulltext - Related data file(s) - Supplementary information

2020-11-25
12:52
 Corryvreckan: A Modular 4D Track Reconstruction and Analysis Software for Test Beam Data / Dannheim, Dominik (CERN) ; Dort, Katharina (Justus-Liebig-Universitaet Giessen (DE)) ; Huth, Lennart (Deutsches Elektronen-Synchrotron (DE)) ; Hynds, Daniel (Nikhef National institute for subatomic physics (NL)) ; Kremastiotis, Iraklis (KIT - Karlsruhe Institute of Technology (DE)) ; Kroeger, Jens (Ruprecht Karls Universitaet Heidelberg (DE)) ; Munker, Magdalena (CERN) ; Pitters, Florian Michael (Austrian Academy of Sciences (AT)) ; Schuetze, Paul (DESY, Germany) ; Spannagel, Simon (DESY, Germany) et al. Corryvreckan is a versatile, highly configurable software with a modular structure designed to reconstruct and analyse test beam and laboratory data. It caters to the needs of the test beam community by providing a flexible offline event building facility to combine detectors with different read-out schemes, with or without trigger information, and includes the possibility to correlate data from multiple devices based on timestamps. [...] CLICdp-Pub-2020-005.- Geneva : CERN, 2020 - 20. Fulltext: PDF;

2020-11-25
04:42
 Measurements of Nuclear Modification Factors of $B^{0}_{s}$ and $B^+$ Mesons in PbPb Collisions with the CMS Experiment / Shi, Zhaozhong Beauty quarks are considered as one of the best probes of the strongly interacting medium created in relativistic heavy-ion collisions because they are predominantly produced via initial hard scatterings. [...] arXiv:2011.10599. - Fulltext

2020-11-25
04:41
 Generating ultra-dense pair beams using 400 GeV/c protons / Arrowsmith, C.D. (Oxford U.) ; Shukla, N. (Lisbon, CFP) ; Charitonidis, N. (CERN) ; Boni, R. (Rochester U.) ; Chen, H. (LLNL, Livermore) ; Davenne, T. (Rutherford) ; Froula, D.H. (Rochester U.) ; Huffman, B.T. (Oxford U.) ; Kadi, Y. (CERN) ; Reville, B. (Heidelberg, Max Planck Inst.) et al. A previously unexplored experimental scheme is presented for generating low-divergence, ultra-dense, relativistic, electron-positron beams using 400 GeV/c protons available at facilities such as HiRadMat and AWAKE at CERN. [...] arXiv:2011.04398. - 8 p. Fulltext

2020-11-24
22:36
 Search for nonresonant Higgs boson pair production in final states with two bottom quarks and two photons in proton-proton collisions at $\sqrt{s} =$ 13 TeV A search for nonresonant production of Higgs boson pairs via gluon-gluon and vector boson fusion processes in final states with two bottom quarks and two photons is presented. [...] CERN-EP-2020-222 ; CMS-HIG-19-018-003. - 2020. Additional information for the analysis - CMS AuthorList - Fulltext

2020-11-24
17:59
 Exclusive dimuon production in ultraperipheral Pb+Pb collisions at $\sqrt{s_{\mathrm{NN}}} = 5.02$ TeV with ATLAS Exclusive dimuon production in ultraperipheral collisions (UPC), resulting from photon-photon interactions in the strong electromagnetic fields of colliding high-energy lead nuclei, $\mathrm{PbPb} (\gamma\gamma) \rightarrow \mu\mu (\mathrm{Pb}^{(\star)}\mathrm{Pb}^{(\star)} )$, is studied using $\mathcal{L}_{\mathrm{int}} = 0.48$ nb$^{-1}$ of $\sqrt{s_\mathrm{NN}}=5.02$ TeV lead-lead collision data at the LHC with the ATLAS detector. [...] CERN-EP-2020-138. - 2020. Fulltext - Previous draft version

2020-11-24
15:16
 Mise à jour N°33 des SPS-AES Standards : Liste des abréviations, Chapitre 2 / Koerner, H SPS-AES-IN-KOEH-0072H ; SPS-AES-IN-KOEH-0071H ; SPS-AES-IN-KOEH-0068H. - 1987. - 53 p. Full text

2020-11-24
07:56
 Characterization of Magnetic Steels for the FCC-ee Magnet Prototypes / Anglada, Jaime R (CERN) ; Arpaia, Pasquale (Naples U.) ; Buzio, Marco (CERN) ; Pentella, Mariano (Turin Polytechnic) ; Petrone, Carlo (CERN) At the European Organization for the Nuclear Research (CERN), several efforts were combined for a preliminary design of a new accelerator, the Future Circular Collider (FCC), a 100-TeV double-ring hadron collider to be installed in a 100-km tunnel. [...] 2020. - 7 p.

2020-11-24
05:35
 Latest results on light (anti)nuclei production in Pb-Pb collisions with ALICE at the LHC / Pinto, Chiara Recent results on the production of light nuclei, including deuterons, tritons, $^3$He, $^4$He and the corresponding antinuclei in Pb-Pb collisions at $\sqrt{s_{\mathrm{NN}}}$ = 5.02 TeV are presented and compared with theoretical predictions to provide insight into their production mechanisms in heavy-ion collisions. [...] arXiv:2011.10489. - 6 p. Fulltext

2020-11-23
09:22
 Search for trilepton resonances from chargino and neutralino pair production in $\sqrt{s} = 13$ TeV $pp$ collisions with the ATLAS detector / ATLAS Collaboration A search is performed for the electroweak pair production of charginos and associated production of a chargino and neutralino, each of which decays through an $R$-parity-violating coupling into a lepton and a $W, \, Z$, or Higgs boson. [...] arXiv:2011.10543 ; CERN-EP-2020-201. - 2020. - 51 p. Fulltext - Previous draft version - Fulltext