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Browsing by Author "Demir, Durmuş Ali"
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Abelian-Non Abellian mixing and cosmic inflation in Born-Infeld type gravity
Altaş, Aslı (Izmir Institute of Technology, 2013)General Relativity (GR), which forms the basic framework for understanding cosmological and astrophysical phenomena, is based solely on general covariance. Therefore, the theory admits extensions regarding various phenomena ... -
Adaptation of digital electronic into detector systems NUMEXO2 in exotic nuclei research
Şahin, Elif (Izmir Institute of Technology, 2017-07)The main purpose of this thesis is to introduce and show the performance and capabilities of the newly developed digital electronic namely NUMEXO2, which has been tested, coupled with EXOGAM2 (EXOtic GAMma array) detector ... -
Affine dynamics with torsion
Gültekin, Kemal (Izmir Institute of Technology, 2016-07)In this study, we give a thorough analysis of a general affine gravity with torsion. After a brief exposition of the affine gravities considered by Eddington and Schr¨odinger, we construct and analyze different affine ... -
Affine inflation
Azri, Hemza; Demir, Durmuş Ali (American Physical Society, 2017-06)Affine gravity, a gravity theory based on affine connection with no notion of metric, supports scalar field dynamics only if scalar fields have nonvanishing potential. The nonvanishing vacuum energy ensures that the ... -
Aligning the CMS muon chambers with the muon alignment system during an extended cosmic ray run
Demir, Durmuş Ali; CMS Collaboration (IOP Publishing, 2010)The alignment system for the muon spectrometer of the CMS detector comprises three independent subsystems of optical and analog position sensors. It aligns muon chambers with respect to each other and to the central silicon ... -
Alignment of the CMS muon system with cosmic-ray and beam-halo muons
Demir, Durmuş Ali; CMS Collaboration (IOP Publishing, 2010)The CMS muon system has been aligned using cosmic-ray muons collected in 2008 and beam-halo muons from the 2008 LHC circulating beam tests. After alignment, the resolution of the most sensitive coordinate is 80 microns for ... -
Alignment of the CMS silicon tracker during commissioning with cosmic rays
Demir, Durmuş Ali; CMS Collaboration (IOP Publishing, 2010)The CMS silicon tracker, consisting of 1440 silicon pixel and 15 148 silicon strip detector modules, has been aligned using more than three million cosmic ray charged particles, with additional information from optical ... -
Born-Infeld-Riemann gravity
Soysal, Selin (Izmir Institute of Technology, 2012)The Universe we live in has started with a bang, a very big bang. Its evolution and global structure are controlled by gravitation and its matter and radiation content. Gravitation, curving of spacetime, formulated in ... -
Calibration of the CMS drift tube chambers and measurement of the drift velocity with cosmic rays
Demir, Durmuş Ali; CMS Collaboration (IOP Publishing, 2010)This paper describes the calibration procedure for the drift tubes of the CMS barrel muon system and reports the main results obtained with data collected during a high statistics cosmic ray data-taking period. The main ... -
Can measurements of electric dipole moments determine the seesaw parameters?
Demir, Durmuş Ali; Farzan, Yasaman (IOP Science, 2005)In the context of the supersymmetrized seesaw mechanism embedded in the Minimal Supersymmetric Standard Model (MSSM), complex neutrino Yukawa couplings can induce Electric Dipole Moments (EDMs) for the charged leptons, ... -
CERN LEP indications for two light Higgs bosons and the U(1)′ model
Demir, Durmuş Ali; Solmaz, Levent; Solmaz, Saime (American Physical Society, 2006-01)Reanalyses of LEP data have shown preference to two light CP-even Higgs bosons. We discuss implications of such a Higgs boson spectrum for the minimal supersymmetric model extended by a standard model singlet chiral ... -
Charged particle multiplicities in pp interactions at √s = 0.9, 2.36, and 7TeV
CMS Collaboration; Demir, Durmuş Ali (Springer, 2011)Measurements of primary charged hadron multiplicity distributions are presented for non-single-diffractive events in proton-proton collisions at centre-of-mass energies of √s = 0.9, 2.36, and 7TeV, in five pseudorapidity ... -
Charged particle transverse momentum spectra in pp collisions at √s = 0:9 and 7 TeV
CMS Collaboration; Demir, Durmuş Ali (Springer, 2011)The charged particle transverse momentum (pT) spectra are presented for pp collisions at √s = 0:9 and 7TeV. The data samples were collected with the CMS detector at the LHC and correspond to integrated luminosities of 231 ... -
CMS data processing workflows during an extended cosmic ray run
Demir, Durmuş Ali; CMS Collaboration (IOP Publishing, 2010)The CMS Collaboration conducted a month-long data taking exercise, the Cosmic Run At Four Tesla, during October-November 2008, with the goal of commissioning the experiment for extended operation. With all installed detector ... -
CMS physics technical design report, volume II: Physics performance
Demir, Durmuş Ali; CMS Collaboration (IOP Publishing, 2007-06)CMS is a general purpose experiment, designed to study the physics of pp collisions at 14 TeV at the Large Hadron Collider (LHC). It currently involves more than 2000 physicists from more than 150 institutes and 37 countries. ... -
CMS physics technical design report: Addendum on high density QCD with heavy ions
Demir, Durmuş Ali; CMS Collaboration (IOP Publishing, 2007-11)This report presents the capabilities of the CMS experiment to explore the rich heavy-ion physics programme offered by the CERN Large Hadron Collider (LHC). The collisions of lead nuclei at energies , will probe quark and ... -
Commissioning and performance of the CMS pixel tracker with cosmic ray muons
Demir, Durmuş Ali; CMS Collaboration (IOP Publishing, 2010)The pixel detector of the Compact Muon Solenoid experiment consists of three barrel layers and two disks for each endcap. The detector was installed in summer 2008, commissioned with charge injections, and operated in the ... -
Commissioning and performance of the CMS silicon strip tracker with cosmic ray muons
Demir, Durmuş Ali; CMS Collaboration (IOP Publishing, 2010)During autumn 2008, the Silicon Strip Tracker was operated with the full CMS experiment in a comprehensive test, in the presence of the 3.8 T magnetic field produced by the CMS superconducting solenoid. Cosmic ray muons ... -
Commissioning of the CMS experiment and the cosmic run at four tesla
Demir, Durmuş Ali; CMS Collaboration (IOP Publishing, 2010)The CMS Collaboration conducted a month-long data-taking exercise known as the Cosmic Run At Four Tesla in late 2008 in order to complete the commissioning of the experiment for extended operation. The operational lessons ... -
Commissioning of the CMS High-Level Trigger with cosmic rays
Demir, Durmuş Ali; CMS Collaboration (IOP Publishing, 2010)The CMS High-Level Trigger (HLT) is responsible for ensuring that data samples with potentially interesting events are recorded with high efficiency and good quality. This paper gives an overview of the HLT and focuses on ...
