# CERN Accelerating science

The Preprints collection aims to cover as far as possible all the grey literature in particle physics and its related technologies. The collection contains something like 400,000 documents, out of which about 50% can be accessed electronically. The documents originate from a variety of institutes all over the world. The collection, currently available, starts in 1979 and it has a full coverage of the arXiv.org e-Print archive since its beginning in 1991.

# Preprints

2019-11-17
04:59
 NNLO QCD$\times$EW corrections to Z production in the $q\bar{q}$ channel / Bonciani, Roberto ; Buccioni, Federico ; Rana, Narayan ; Triscari, Ilario ; Vicini, Alessandro We present the first results for the ${\cal O}(\alpha\alpha_s)$ corrections to the total partonic cross section of the process $q\bar q\to Z+X$, with the complete set of contributions, that include photonic and massive weak gauge boson effects. [...] arXiv:1911.06200 ; CERN-TH-2019-154 ; OUTP-19-13P ; TIF-UNIMI-2019-17. - 6 p. Fulltext

2019-11-16
09:33
 The COMPASS experiment at CERN / Kouznetsov, Oleg M (Dubna, JINR) COMPASS (CO mmon M uon and P roton A pparatus for S tructure and S pectroscopy) is a xed target experiment at CERN dedicated to studies of the spin structure of the nucleon and of the spectroscopy of hadrons [...] 2014. - 10 p. Full text

2019-11-16
04:04
 Production of Z'-Boson Resonances with Large Width at the LHC / Accomando, E. (Southampton U.) ; Coradeschi, F. (Cambridge U., DAMTP) ; Cridge, T. (University Coll. London) ; Fiaschi, J. (Munster U., ITP) ; Hautmann, F. (Antwerp U. ; Oxford U. ; Basque U., Bilbao ; CERN) ; Moretti, S. (Southampton U.) ; Shepherd-Themistocleous, C. (Rutherford ; Rutherford) ; Voisey, C. (Cambridge U.) Di-lepton searches for Beyond the Standard Model (BSM) Z' bosons that rely on the analysis of the Breit-Wigner (BW) line shape are appropriate in the case of narrow resonances, but likely not sufficient in scenarios featuring Z' states with large widths. [...] arXiv:1910.13759. - 9 p. Fulltext

2019-11-16
04:03
 Transverse Beam Stability with Low-Impedance Collimators in the High Luminosity Large Hadron Collider: Status and Challenges / Antipov, S.A. (CERN) ; Amorim, D. (CERN) ; Biancacci, N. (CERN) ; Carideo, E. (CERN) ; Mereghetti, A. (CERN) ; Métral, E. (CERN) ; Redaelli, S. (CERN) ; Salvant, B. (CERN) he High-Luminosity upgrade of the Large Hadron Collider (HL-LHC) will double its beam intensity for the needs of High Energy Physics frontier. [...] arXiv:1910.09974. - 10 p. Fulltext

2019-11-16
04:03
 Versatile firmware for the Common Readout Unit (CRU) of the LHC ALICE experiment / Bourrion, O. (LPSC, Grenoble) ; Bouvier, J. (LPSC, Grenoble) ; Costa, F. (CERN) ; David, E. (Wigner RCP, Budapest) ; Imrek, J. (Wigner RCP, Budapest) ; Nguyen, T.M. (Wigner RCP, Budapest) ; Mukherjee, S. (Bose Inst., Kolkata) For the third running period of the CERN LHC, the ALICE experiment will use a Common Readout Unit (CRU) at the heart of the data acquisition system. [...] arXiv:1910.08804. - 7 p. Fulltext

2019-11-16
04:03
 Design and operation of the air-cooled beam dump for the extraction line of CERN's Proton Synchrotron Booster (PSB) / Perillo-Marcone, Antonio (CERN) ; Calviani, Marco (CERN) ; Solieri, Nicola (CERN) ; Kaiser, Paul (CERN) ; Sarrio, Alba (CERN) ; Venturi, Valentina (CERN) ; Vlachoudis, Vasilis (CERN) A new beam dump has been designed, built, installed and operated to withstand the future proton beam extracted from the Proton Synchrotron Booster (PSB) in the framework of the LHC Injector Upgrade (LIU) Project at CERN, consisting of up to 1E14 protons per pulse at 2 GeV, foreseen after the machine upgrades planned for CERN's Long Shutdown 2 (2019-2020). [...] arXiv:1910.08493. - 18 p. Fulltext

2019-11-15
15:58
 Search for direct stau production in events with two hadronic $\tau$-leptons in $\sqrt{s} = 13$ TeV $pp$ collisions with the ATLAS detector A search for the direct production of the supersymmetric partners of $\tau$-leptons (staus) in final states with two hadronically decaying $\tau$-leptons is presented. [...] CERN-EP-2019-191. - 2019. Fulltext - Previous draft version

2019-11-15
09:29
 Determination of quantum numbers for several excited charmed mesons observed in $B^- \to D^{*+} \pi^- \pi^-$ decays / LHCb Collaboration A four-body amplitude analysis of the $B^- \to D^{*+} \pi^- \pi^-$ decay is performed, where fractions and relative phases of the various resonances contributing to the decay are measured. [...] arXiv:1911.05957 ; CERN-EP-2019-201 ; LHCb-PAPER-2019-027 ; LHCB-PAPER-2019-027. - 2019. - 35 p, 35 p. Fulltext - Related data file(s) - Fulltext

2019-11-15
09:07
 Higgs production in the VH mode at ATLAS and CMS / Mastrolorenzo, Luca (Aachen, Tech. Hochsch.) /ATLAS, CMS and Higgs collaborations In these proceedings, the key role played by the Higgs boson associated production (VH) mode in the characterization of the electroweak spontaneous symmetry breaking mechanism is described through a review of the latest results from the ATLAS and CMS experiments obtained with the data collected during LHC Run 2. A focus is given to the recent discovery of the Higgs boson decay to a bottom quark-antiquark pair by ATLAS and CMS achieved through the analysis of the additional data collected during 2017. [...] CMS-CR-2019-173.- Geneva : CERN, 2019 - 16 p. Fulltext: PDF; In : 7th Edition of the Large Hadron Collider Physics Conference, Puebla, Mexico, 20 May 2019

2019-11-15
05:00
 Superconformal surfaces in four dimensions / Bianchi, Lorenzo ; Lemos, Madalena We study the constraints of superconformal symmetry on codimension two defects in four-dimensional superconformal field theories. [...] arXiv:1911.05082 ; CERN-TH-2019-190. - 58 p. Fulltext

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