# CERN Preprints

2018-08-22
04:05
 The strange side of LHCb / Borsato, Martino (Santiago de Compostela U., IGFAE) ; Gligorov, Vladimir Vava (Paris U., VI-VII) ; Guadagnoli, Diego (Annecy, LAPTH) ; Martinez Santos, Diego (Santiago de Compostela U., IGFAE) ; Sumensari, Olcyr (Padua U. ; INFN, Padua) We provide a general effective-theory argument relating present-day discrepancies in semi-leptonic $B$-meson decays to signals in kaon physics, in particular lepton-flavour violating ones of the kind $K \to (\pi) e^\pm \mu^\mp$. [...] arXiv:1808.02006 ; LAPTH-030/18. - 13 p. Fulltext

2018-08-22
04:05
 Signatures of new physics versus the ridge phenomenon in hadron-hadron collisions at the LHC / Sanchis-Lozano, Miguel-Angel (Valencia U., IFIC) ; Sarkisyan-Grinbaum, Edward K. (CERN ; Texas U., Arlington) In this paper, we consider the possibility that a new stage of matter, stemming from hidden/dark sectors beyond the Standard Model, to be formed in $pp$ collisions at the LHC, can significantly modify the correlations among final-state particles. [...] arXiv:1808.01463. - 7 p. Fulltext

2018-08-21
10:21
 Measurement of antiproton production in ${\rm p He}$ collisions at $\sqrt{s_{NN}}=110$ GeV / LHCb Collaboration The cross-section for prompt antiproton production in collisions of protons with an energy of $6.5$ TeV incident on helium nuclei at rest is measured with the LHCb experiment from a data set corresponding to an integrated luminosity of $0.5 ~~\rm nb^{-1}$. [...] arXiv:1808.06127 ; LHCb-PAPER-2018-031 ; CERN-EP-2018-217 ; LHCB-PAPER-2018-031. - 2018. Fulltext - Previous draft version - Related data file(s) - Fulltext

2018-08-21
09:32
 Design of a Radiation Hardened Power-On-Reset / López-Morillo, E (U. Sevilla, Dept. Electron. Eng.) ; Palomo, F R (U. Sevilla, Dept. Electron. Eng.) ; Márquez, F (U. Sevilla, Dept. Electron. Eng.) ; Muñoz, F (U. Sevilla, Dept. Electron. Eng.) In this paper, the design of a power-ON-reset intellectual property (IP) block for the RD53 collaboration, a radiation hardening by design circuit to withstand the High-Luminosity Large Hadron Collider tracker radiation environment, is presented. [...] 2018. - 8 p.

2018-08-21
09:05
 (YSF) Search for additional neutral MSSM Higgs bosons in the di-tau final state at CMS / Spanring, Markus (Vienna, OAW) /CMS Collaboration A search for aditional neutral Higgs bosons in the $\tau\tau$ final state is presented. The search is performed in the context of the minimal supersymmetric extension of the standard model (MSSM), using data from proton-proton collison collected with the CMS detector in 2016 at a center-of-mass energy of 13~TeV. [...] CMS-CR-2018-082.- Geneva : CERN, 2018 - 9 p. Fulltext: PDF; In : an Alpine LHC Physics Summit, Obergurgl, Austria, 15 - 20 Apr 2018

2018-08-21
05:24
 Testing the system size dependence of hydrodynamical expansion and thermal particle production with $\pi$, K, p, and $\phi$ in Xe-Xe and Pb-Pb collisions with ALICE / Bellini, F. We present new results on transverse momentum spectra, integrated yields, and mean transverse momenta of pions, kaons, and protons, as well as of $\phi$-mesons for various centrality classes measured in Pb-Pb and Xe-Xe collisions at the LHC. [...] arXiv:1808.05823. - 4 p. Fulltext

2018-08-21
05:24
 Field integrals for the ATLAS tracking volume / Klyukhin, V.I. (Serpukhov, IHEP) ; Poppleton, A. (CERN) ; Schmitz, J. (Nikhef, Amsterdam) The magnetic field integrals connected with the momentum resolution are calculated for the ATLAS inner tracking volume in a range of pseudorapidity $|\eta| < 3$ for the cases of `ideal' and inhomogeneous solenoid fields. [...] arXiv:1808.00955 ; ATLAS Internal Note INDET-NO-023 ; February 9 ; 1993. - 6 p. Fulltext

2018-08-21
05:24
 The MESS of cosmological perturbations / Romano, Antonio Enea (CERN ; ICRA, Pescara) ; Pena, Sergio A. Vallejo (ICRA, Pescara) We introduce two new effective quantities for the study of comoving curvature perturbations $\zeta$: the space dependent effective sound speed (SESS) and the momentum dependent effective sound speed (MESS) . [...] arXiv:1806.01941. - Fulltext

2018-08-20
22:44
 Search for a charged Higgs boson decaying to charm and bottom quarks in proton-proton collisions at $\sqrt{s} =$ 8 TeV / CMS Collaboration A search for charged Higgs boson decaying to a charm and a bottom quark (${{\mathrm{H}^+} \to\mathrm{c}\mathrm{\bar{b}}}$) is performed using 19.7 fb$^{-1}$ of pp collision data at $\sqrt{s} =$ 8 TeV. [...] arXiv:1808.06575 ; CMS-HIG-16-030 ; CERN-EP-2018-121 ; CMS-HIG-16-030-003. - 2018. Additional information for the analysis - CMS AuthorList - Fulltext - Full text

2018-08-20
10:34
 Search for squarks and gluinos in final states with hadronically decaying $\tau$-leptons, jets, and missing transverse momentum using $pp$ collisions at $\sqrt{s} = 13$ TeV with the ATLAS detector / ATLAS Collaboration A search for supersymmetry in events with large missing transverse momentum, jets, and at least one hadronically decaying $\tau$-lepton is presented. [...] arXiv:1808.06358 ; CERN-EP-2018-185. - 2018. - 49 p, 49 p. Fulltext - Previous draft version - Full text