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CMS Theses

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2016-06-22
15:47
Measurement of Double Differential t t Production Cross Sections with the CMS Detector / Korol, Ievgen (DESY) ; Behnke, Olaf (dir.) (DESY)
The high energy scale of the pp collisions at the Large Hadron Collider (LHC) at CERN¯makes this facility to a real factory for the production of tt pairs. This enables to studythe top-quark properties and its production and decay mechanisms in unprecedent detail.The dileptonic decay channel of the top-quark pair, in which both W bosons, producedfrom the top-quark decay, decay into a lepton and neutrino, is studied in this analysis.The limitation to one electron and one muon in final state used in this work allows tostrongly suppress the possible background processes and leads to a higher signal purity.√About 40k events with a top-quark pair have been selected using the s = 8 TeV datarecorded with the CMS detector in the year 2012. [...]
CMS-TS-2016-011; CERN-THESIS-2016-060.- 2016 - 166 p. Fulltext: TS2016_011_2 - PDF; TS2016_011 - PDF;

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2016-06-22
15:47
Test Beam Measurements for the Upgrade of the CMS Pixel Detector and Measurement of the Top Quark Mass from Differential Cross Sections / Spannagel, Simon (DESY) ; Eckstein, Doris (dir.) (DESY)
In this dissertation, two different topics are addressed which are vital for the realization ofmodern high-energy physics experiments: detector development and data analysis. The first partfocuses on the development and characterization of silicon pixel detectors [...]
CMS-TS-2016-010; CERN-THESIS-2016-059.- 2016 - 275 p. Fulltext: TS2016_010_2 - PDF; TS2016_010 - PDF;

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2016-06-22
15:46
Precision Studies of Proton Structure and Jet Energy Scale with the CMS Detector at the LHC / Dominik Wilhelm (Karlsruhe U., EKP) ; Quast, Gunter (dir.) (KIT, Karlsruhe, EKP)
CMS-TS-2016-009; CERN-THESIS-2016-058.- 2016 - 171 p. Fulltext: TS2016_009 - PDF; TS2016_009_2 - PDF;

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2016-06-15
14:23
Measurements of Upsilon meson suppression in heavy ion collisions with the CMS experiment at the LHC / Filipovic, Nicolas
Measurements of Upsilon suppression in ultra relativistic heavy ion collisions are key to understanding the hot and deconfined phase of matter called Quark-Gluon Plasma (QGP) [...]
CERN-THESIS-2015-344. - 249 p.

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2016-06-15
14:14
Directed Flow In Heavy Ion Collisions at $\sqrt{s_NN}$=2.76 TeV / Gomez, Jaime Arturo
The directed flow of charged particles at midrapidity is measured in Pb-Pb collisions at $\sqrt{s_{NN}}=2.76$ TeV relative to the collision Event Plane, defined by the participant plane using various subdetectors [...]
142 p.

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2016-06-15
13:35
Production of the new pixel detector for the upgrade of the CMS experiment and study of anomalous couplings in the non-resonant Higgs bosons pair production in p-p collisions at $\sqrt{s}$ = 13 TeV / Dall'Osso, Martino
The present Ph.D thesis describes the work done within the CMS collaboration on the pixel detector upgrade and on the search for non-resonant di-Higgs production in p-p collision at LHC [...]
CERN-THESIS-2016-052 CMS-TS-2016-008. - 2016. - 146 p.

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2016-06-07
17:33
Search for a vector-like quark T' decaying into top+Higgs in single production mode in full hadronic final state using CMS data collected at 8 TeV / Ruiz Alvarez, Jose David
During 2012, the Large Hadron Collider (LHC) has delivered proton-proton collisions at 8 TeV center of mass energy to the ATLAS and CMS experiments [...]
CERN-THESIS-2016-049 - 211 p.

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2016-05-26
15:33
Study of long-term sustained operation of gaseous detectors for the high rate environment in CMS / Merlin, Jeremie Alexandre
The muon system of CMS aims to provide an efficient and fast identification of the muons produced in the proton-proton collisions [...]
CERN-THESIS-2016-041 - 222 p.

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2016-05-17
17:29
Detector Control System for CMS Endcap RPCs and Cross Section Measurement of $t\bar{t}$ dileptonic channel with the CMS Detector at $\sqrt{s}$ = 8 $TeV$ / Khurshid, Taimoor
The Resistive Plate Chamber Endcap(RE) system consists of 432 double-gap chambers equipped with about 1296 front-end boards [...]
CERN-THESIS-2015-335 - 114 p.

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2016-04-26
13:28
Studies of the $B^{0}_{s}-\overline{B}^{0}_{s}$ in the CMS experiment at the LHC / Fedi, Giacomo
The B0s-B0sbar system was investigated using the J/ψ(μ+μ−)φ(K+K−) decay channel [...]
CERN-THESIS-2016-026. - 161 p.

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