# CERN Preprints

Nyeste elementer:
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. Preprint - Full text

2015-11-26
07:37
 The Gamma Factory proposal for CERN / Krasny, Mieczyslaw Witold (Paris U., VI-VII) This year, 2015, marks the centenary of the publication of Einsteins Theory of General Relativity and it has been named the International Year of Light and light-based technologies by the UN General Assembly. [...] arXiv:1511.07794. - 2015. - 6 p. Preprint

2015-11-24
17:33
 B Physics and Quarkonia at CMS / Wulz, Claudia (Vienna, OAW) /CMS Collaboration Selected recent results on B physics and quarkonia are presented. These include a determination of the CP-violating phase $\phi_s$ and the decay width difference $\Delta\Gamma_s$ of the light and heavy B$_s$ states with B$_s \rightarrow$ J$/\psi~\Phi$(1020), prompt double-differential production cross sections of J$/\psi$ and $\psi$(2S), and polarization measurements for J/$\psi$, $\psi$(2S), $\Upsilon$(1S), $\Upsilon$(2S), and $\Upsilon$(3S). [...] CMS-CR-2014-440.- Geneva : CERN, 2014 - 9 p. Fulltext: PDF; In : 3rd International Conference on New Frontiers in Physics, Kolymbari, Crete, Greece, 28 Jul - 06 Aug 2014

2015-11-24
17:33
 Architecture of the upgraded BCM1F Backend Electronics for Beam Conditions and Luminosity measurement - hardware and firmware / Zagozdzinska, Agnieszka Anna (CERN) /CMS Collaboration The Beam Radiation Instrumentation and Luminosity Project of the CMS experiment, consists of several beam monitoring systems. One system, the upgraded Fast Beams Condition Monitor, is based on 24 single crystal CVD diamonds with a double-pad sensor metallization and a custom designed readout. [...] CMS-CR-2014-387.- Geneva : CERN, 2014 - 12 p. Fulltext: PDF; In : Topical Workshop on Electronics for Particle Physics 2014, Aix En Provence, France, 22 - 26 Sep 2014

2015-11-24
17:31
 Measurement of CP Violation in $\mathrm{B}^{0}_{\mathrm{s}} \! \to \mathrm{J} \! / \! \psi\,\phi$ decays with the CMS detector / Pazzini, Jacopo (INFN, Padua ; Padua U.) /CMS Collaboration The CP-violating weak phase $\phi_\mathrm{s}$ and the decay width difference $\Delta\Gamma_{\mathrm{s}}$ of $\mathrm{B}^{0}_{\mathrm{s}}$ mesons are measured by the CMS experiment at the LHC using a data sample of $\mathrm{B}^{0}_{\mathrm{s}} \! \to \mathrm{J} \! / \! \psi\,\phi$ decays. The analysed dataset corresponds to an integrated luminosity of about $20~\mathrm{fb}^{-1}$ collected in $pp$ collisions at a centre-of-mass energy $\sqrt{s} = 8~\mathrm{TeV}$. [...] CMS-CR-2014-367.- Geneva : CERN, 2014 - 6 p. Fulltext: PDF; In : 8th International Workshop on the CKM Unitarity Triangle, Univ. Tech., Vienna, Austria, 08 - 12 Sep 2014

2015-11-24
17:31
 Architecture of the upgraded BCM1F Backend Electronics for Beam Conditions and Luminosity measurement - hardware and firmware / Zagozdzinska, Agnieszka Anna (CERN) /CMS Collaboration The Beam Radiation Instrumentation and Luminosity Project of the CMS experiment, consists of several beam monitoring systems. One system, the upgraded Fast Beams Condition Monitor, is based on 24 single crystal CVD diamonds with a double-pad sensor metallization and a custom designed readout. [...] CMS-CR-2014-154.- Geneva : CERN, 2014 - 9 p. Fulltext: PDF;