# CERN Preprints

2015-11-30
16:03
 Overview of quarkonium production in heavy-ion collisions at LHC / Hong, Byungsik (Korea U.) /ALICE, ATLAS and CMS Collaborations Quarkonium has been regarded as one of the golden probes to identify the phase transition from confined hadronic matter to the deconfined quark-gluon plasma (QGP) in heavy-ion collisions. Recent data on the yields and momentum distributions of $J/\psi$ and $\Upsilon$ families in pp, pPb, and PbPb collisions at the Large Hadron Collider (LHC) are reviewed. [...] CMS-CR-2015-309.- Geneva : CERN, 2015 - 7 p. Fulltext: PDF; In : XLV International Symposium on Multiparticle Dynamics, Kreuth, Bavaria, Germany, 4 - 9 Oct 2015

2015-11-30
16:03
 Search for FCNC with top quarks / Skovpen, Kirill (Strasbourg, IPHC) /ATLAS and CMS Collaborations Processes with Flavour Changing Neutral Currents (FCNC) are highly suppressed in the Standard Model (SM). Any anomalous enhancements of observed rates of these processes could point to existence of the new physics. [...] CMS-CR-2015-305.- Geneva : CERN, 2015 - 6 p. Fulltext: PDF; In : 8th International Workshop on Top Quark Physics, Ischia, Italy, 14 - 18 Sep 2015

2015-11-30
07:39
 Origin of Abelian Gauge Symmetries in Heterotic/F-theory Duality / Cvetic, Mirjam ; Grassi, Antonella ; Klevers, Denis ; Poretschkin, Maximilian ; Song, Peng We study aspects of heterotic/F-theory duality for compactifications with Abelian gauge symmetries. [...] arXiv:1511.08208 ; UPR-1275-T CERN-PH-TH-2015-273. - 2015. - 52 p. Preprint - Full text

2015-11-30
07:38
 QCD corrections to $W^+W^-$ production through gluon fusion / Caola, Fabrizio ; Melnikov, Kirill ; Röntsch, Raoul ; Tancredi, Lorenzo We compute the next-to-leading order (NLO) QCD corrections to the $gg \to W^+ W^- \to l^+_1 \nu_1 l^-_2 \bar \nu_2$ process, mediated by a massless quark loop, at the LHC. [...] arXiv:1511.08617 ; CERN-PH-TH-2015-276 ; TTP15-041. - 2015. - 6 p. Preprint - Full text

2015-11-30
07:38
 Search for the Standard Model Higgs boson produced in association with a vector boson and decaying into a tau pair in $pp$ collisions at $\sqrt{s} = 8$ TeV with the ATLAS detector / ATLAS Collaboration A search for the Standard Model Higgs boson produced in association with a vector boson with the decay $H\rightarrow \tau\tau$ is presented. [...] arXiv:1511.08352 ; CERN-PH-2015-226. - 2015. - 17 p. Preprint - Full text

2015-11-27
14:36
 Small pitch pixel sensors\\ for the CMS Phase II upgrade / Steinbrueck, Georg (Hamburg U.) /CMS Collaboration The CMS experiment intends to exchange the pixel detector for the high luminosity phase of the Large Hadron Collider (HL-LHC). Therefore, a large R\&D; effort has been started in order to develop sensors capable of withstanding the expected extremely high radiation damage. The targeted integrated luminosity of 3000 fb$^{-1}$, estimated for 10 years of operation at the design center-of-mass energy of 14 TeV, translates into an equivalent NIEL (Non-Ionizing Energy Loss) of 2$\times{10}^{16}$ neq cm$^{-2}$ and an IEL (Ionizing Energy Loss) dose in the SiO$_{2}$ of 5 MGy at the expected position of the innermost pixel detector layer. [...] CMS-CR-2015-312.- Geneva : CERN, 2015 - 7 p. Fulltext: PDF; In : 2015 IEEE Nuclear Science Symposium and Medical Imaging Conference, San Diego, California, United States, 31 Oct - 7 Nov 2015

2015-11-26
10:55
 CMS overview / Hong, Byungsik (Korea U.) /CMS Collaboration Most recent CMS data related to the high-density QCD are presented for pp and PbPb collisions at 2.76 TeV and pPb collisions at 5.02 TeV. The PbPb collision is essential to understand collective behavior and the final-state effects for the detailed characteristics of hot, dense partonic matter, whereas the pPb collision provides the critical information on the initial-state effects including the modification of the parton distribution function in cold nuclei. [...] CMS-CR-2015-310.- Geneva : CERN, 2015 - 9 p. Fulltext: PDF; In : 25th International Conference on Ultra-relativistic Nucleus-nucleus Collisions, Kobe, Jpn, 27 Sep - 4 Oct 2015

2015-11-26
09:44
 Flow and correlations results from CMS / Devetak, Damir (VINCA Inst. Nucl. Sci., Belgrade) /CMS Collaboration The observation of long-range two-particle correlations in high energy heavy ion collisions opens the opportunities of exploring novel QCD dynamics in quark gluon plasma (QGP), the hot dense matter created in heavy ion collisions. In particular, such correlations are sensitive to the degree of thermalization in the system. [...] CMS-CR-2015-209.- Geneva : CERN, 2015 - 8 p. Fulltext: PDF; In : European Physical Society Conference on High Energy Physics 2015, Vienna, Austria, 22 - 29 Jul 2015

2015-11-26
08:24
 Search for the Standard Model Higgs boson produced in association with a vector boson and decaying into a tau pair in pp collisions at $\sqrt(s) = 8$ TeV with the ATLAS detector A search for the Standard Model Higgs boson produced in association with a vector boson with the decay $H\rightarrow \tau\tau$ is presented. [...] CERN-PH-EP-2015-226. - 2015. Fulltext - Previous draft version

2015-11-26
07:37
 Measurement of forward $W$ and $Z$ boson production in $pp$ collisions at $\sqrt{s} = 8\mathrm{\,Te\kern -0.1em V}$ / LHCb collaboration Measurements are presented of electroweak boson production using data from $pp$ collisions at a centre-of-mass energy of $\sqrt{s} = 8\mathrm{\,Te\kern -0.1em V}$. [...] arXiv:1511.08039 ; LHCB-PAPER-2015-049 ; CERN-PH-EP-2015-301. - 2015. - 51 p. Preprint - Full text - Related data file(s) - Related supplementary data file(s)