LEADER 03889nam 22007215 450 001 9910300414003321 005 20200705071405.0 010 $a3-319-18932-8 024 7 $a10.1007/978-3-319-18932-1 035 $a(CKB)3710000000436846 035 $a(EBL)2120647 035 $a(OCoLC)911911993 035 $a(SSID)ssj0001525272 035 $a(PQKBManifestationID)11816152 035 $a(PQKBTitleCode)TC0001525272 035 $a(PQKBWorkID)11485623 035 $a(PQKB)11532779 035 $a(DE-He213)978-3-319-18932-1 035 $a(MiAaPQ)EBC2120647 035 $a(PPN)186401450 035 $a(EXLCZ)993710000000436846 100 $a20150624d2015 u| 0 101 0 $aeng 135 $aur|n|---||||| 181 $ctxt 182 $cc 183 $acr 200 10$aSpin Correlations in tt Events from pp Collisions $eMeasured at ?s = 7 TeV in the Lepton+Jets Final State with the ATLAS Detector /$fby Boris Lemmer 205 $a1st ed. 2015. 210 1$aCham :$cSpringer International Publishing :$cImprint: Springer,$d2015. 215 $a1 online resource (246 p.) 225 1 $aSpringer Theses, Recognizing Outstanding Ph.D. Research,$x2190-5053 300 $aDescription based upon print version of record. 311 $a3-319-18931-X 320 $aIncludes bibliographical references and index at the end of each chapters. 327 $aStandard Model, Top Quarks and Spin Correlation -- Experimental Setup -- Analysis Objects -- Dataset, Signal and Background Modelling -- Event Selection and Reconstruction -- Analysis Strategy -- Systematic Uncertainties -- Results -- Summary, Conclusion and Outlook. 330 $aThis thesis introduces readers to the Standard Model, the top quark and its properties, before explaining the concept of spin correlation measurement. The first measurement of top quark spin correlations at the LHC in the lepton+jets decay channel is presented. As the heaviest elementary particle, the top quark plays an essential role in the Standard Model of elementary particle physics. In the case of top quarks being produced in pairs at hadron colliders, the Standard Model predicts their spins to be correlated. The degree of correlation depends on both the production mechanism and properties of the top quark. Any deviation from the Standard Model prediction can be an indicator for new physics phenomena. The thesis employs an advanced top quark reconstruction algorithm including dedicated identification of the up- and down-type quarks from the W boson decay. 410 0$aSpringer Theses, Recognizing Outstanding Ph.D. Research,$x2190-5053 606 $aElementary particles (Physics) 606 $aQuantum field theory 606 $aString theory 606 $aPhysical measurements 606 $aMeasurement    606 $aElementary Particles, Quantum Field Theory$3https://scigraph.springernature.com/ontologies/product-market-codes/P23029 606 $aQuantum Field Theories, String Theory$3https://scigraph.springernature.com/ontologies/product-market-codes/P19048 606 $aMeasurement Science and Instrumentation$3https://scigraph.springernature.com/ontologies/product-market-codes/P31040 615 0$aElementary particles (Physics). 615 0$aQuantum field theory. 615 0$aString theory. 615 0$aPhysical measurements. 615 0$aMeasurement   . 615 14$aElementary Particles, Quantum Field Theory. 615 24$aQuantum Field Theories, String Theory. 615 24$aMeasurement Science and Instrumentation. 676 $a539.7212 700 $aLemmer$b Boris$4aut$4http://id.loc.gov/vocabulary/relators/aut$0792532 801 0$bMiAaPQ 801 1$bMiAaPQ 801 2$bMiAaPQ 906 $aBOOK 912 $a9910300414003321 996 $aSpin Correlations in tt Events from pp Collisions$91772342 997 $aUNINA