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000614200 0247_ $$2datacite_doi$$a10.3204/PUBDB-2024-05764
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000614200 088__ $$2DESY$$aDESY-THESIS-2024-013
000614200 1001_ $$0P:(DE-H253)PIP1088838$$aYang, Yewon$$b0$$eCorresponding author$$gfemale
000614200 245__ $$aMeasurement of Charm Production in CMS and Total Charm Cross Section with Non-Universal Charm Fragmentation$$f2021-01-01 - 2024-06-30
000614200 260__ $$aHamburg$$bVerlag Deutsches Elektronen-Synchrotron DESY$$c2024
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000614200 3367_ $$0PUB:(DE-HGF)11$$2PUB:(DE-HGF)$$aDissertation / PhD Thesis$$bphd$$mphd$$s1744202892_2962101
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000614200 502__ $$aDissertation, Universität Hamburg, 2024$$bDissertation$$cUniversität Hamburg$$d2024$$o2024-06-27
000614200 520__ $$aThis thesis presents differential and total charm cross section measurements at various centerof-mass energies in $pp$ collisions. For the purpose of measuring the total charm cross section,the D$^{∗+}$ differential cross sections are measured at $\sqrt{s}$ = 7, 0.9 and 13 TeV in the CMSdetector by covering the largest possible phase space, resulting in the smallest extrapolation factor ever introduced at the LHC. The measured fiducial cross sections are extrapolated to thetotal cross section using a data-driven parametrization which is introduced for the first time tobe applied to all the weakly-decaying ground states in $pp$ collisions with non-universal charmfragmentation. Also adding other LHC measurements, the total charm-pair cross sections aremeasured at $\sqrt{s}$ = 0.9, 5, 7, and 13 TeV to be 1.83$\substack{+0.35 \\ −0.37}$, 8.43$\substack{+1.055 \\ −1.16}$, 9.39$\substack{+1.35 \\ −1.49}$, and 17.43$\substack{+2.10 \\ −2.57}$ mb, respectively. These measurements supersede all the earlier LHC measurements which werederived under the fragmentation universality assumption, and show consistency with NNLOQCD theory predictions. The measurement of the total charm cross section as a function ofthe center-of-mass energy can be used to constrain QCD parameters. The very first exampleis shown to constrain the charm mass and the parton distribution functions particularly in thelow-$x$ region.
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000614200 536__ $$0G:(DE-HGF)2015_IFV-VH-GS-500$$aPHGS, VH-GS-500 - PIER Helmholtz Graduate School (2015_IFV-VH-GS-500)$$c2015_IFV-VH-GS-500$$x1
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000614200 7001_ $$0P:(DE-H253)PIP1002698$$aGeiser, Achim$$b1$$eThesis advisor$$udesy
000614200 7001_ $$0P:(DE-H253)PIP1003775$$aMoch, Sven-Olaf$$b2$$eThesis advisor
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