LEADER 04289nam 22006735 450 001 9910300433903321 005 20200705034137.0 010 $a3-319-19653-7 024 7 $a10.1007/978-3-319-19653-4 035 $a(CKB)3710000000434137 035 $a(EBL)2120654 035 $a(OCoLC)911054477 035 $a(SSID)ssj0001525260 035 $a(PQKBManifestationID)11909427 035 $a(PQKBTitleCode)TC0001525260 035 $a(PQKBWorkID)11495945 035 $a(PQKB)10456574 035 $a(DE-He213)978-3-319-19653-4 035 $a(MiAaPQ)EBC2120654 035 $a(PPN)186401515 035 $a(EXLCZ)993710000000434137 100 $a20150612d2015 u| 0 101 0 $aeng 135 $aur|n|---||||| 181 $ctxt 182 $cc 183 $acr 200 10$aQCD Radiation in Top-Antitop and Z+Jets Final States $ePrecision Measurements at ATLAS /$fby Kiran Joshi 205 $a1st ed. 2015. 210 1$aCham :$cSpringer International Publishing :$cImprint: Springer,$d2015. 215 $a1 online resource (188 p.) 225 1 $aSpringer Theses, Recognizing Outstanding Ph.D. Research,$x2190-5053 300 $aDescription based upon print version of record. 311 $a3-319-19652-9 320 $aIncludes bibliographical references. 327 $aIntroduction -- The Standard Model -- Experimental Apparatus -- Reconstructing Physics Objects -- Event-Filter Muon Isolation -- Jet Vetoing in Top-Antitop Events -- Studies and Applications of Jet Vetoing in Boosted Topologies -- Measurements of Electroweak Z Boson + Dijet Production -- Conclusions. 330 $aThis thesis contains new research in both experimental and theoretical particle physics, making important contributions in each. Two analyses of collision data from the ATLAS experiment at the LHC are presented, as well as two phenomenological studies of heavy coloured resonances that could be produced at the LHC. The first data analysis was the measurement of top quark-antiquark production with a veto on additional jet activity. As the first detector-corrected measurement of jet activity in top-antitop events it played an important role in constraining the theoretical modelling, and ultimately reduced these uncertainties for ATLAS's other top-quark measurements by a factor of two. The second data analysis was the measurement of Z+2jet production and the observation of the electroweak vector boson fusion (VBF) component. As the first observation of VBF at a hadron collider, this measurement demonstrated new techniques to reliably extract VBF processes and paved the way for future VBF Higgs measurements. The first phenomenological study developed a new technique for identifying the colour of heavy resonances produced in proton-proton collisions. As a by-product of this study an unexpected and previously unnoticed correlation was discovered between the probability of correctly identifying a high-energy top and the colour structure of the event it was produced in. The second phenomenological study explored this relationship in more detail, and could have important consequences for the identification of new particles that decay to top quarks. 410 0$aSpringer Theses, Recognizing Outstanding Ph.D. Research,$x2190-5053 606 $aElementary particles (Physics) 606 $aQuantum field theory 606 $aPhysical measurements 606 $aMeasurement    606 $aElementary Particles, Quantum Field Theory$3https://scigraph.springernature.com/ontologies/product-market-codes/P23029 606 $aMeasurement Science and Instrumentation$3https://scigraph.springernature.com/ontologies/product-market-codes/P31040 615 0$aElementary particles (Physics). 615 0$aQuantum field theory. 615 0$aPhysical measurements. 615 0$aMeasurement   . 615 14$aElementary Particles, Quantum Field Theory. 615 24$aMeasurement Science and Instrumentation. 676 $a539.7548 700 $aJoshi$b Kiran$4aut$4http://id.loc.gov/vocabulary/relators/aut$0792511 801 0$bMiAaPQ 801 1$bMiAaPQ 801 2$bMiAaPQ 906 $aBOOK 912 $a9910300433903321 996 $aQCD Radiation in Top-Antitop and Z+Jets Final States$91772312 997 $aUNINA