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oai:www.ideals.illinois.edu:2142/78432 2023-07-11 col_2142_5131 col_2142_8859 com_2142_5130 com_2142_8858 com_2142_234

El-Khadra, Aida Stone, Michael Kronfeld, Andreas Pitts, Kevin Ryu, Shinsei Chang, Chia Cheng 2015-07-22T22:17:12Z 2015-07-22T22:17:12Z 2015-05 2015-04-23 "We study the short-distance hadronic matrix elements for $D$-meson mixing with partially quenched $N_f=2+1$ lattice QCD. We use a large set of the MIMD Lattice Computation Collaboration's gauge configurations with $a^2$ tadpole-improved staggered sea quarks and tadpole-improved L\""uscher-Weisz gluons. We use the $a^2$ tadpole-improved action for valence light quarks and the Sheikoleslami-Wohlert action with the Fermilab interpretation for the valence charm quark. Our calculation covers the complete set of five operators needed to constrain new physics models for $D$-meson mixing. We match our matrix elements to the $\overline{\text{MS}}$-NDR scheme evaluated at 3GeV. We report values for the Beneke-Buchalla-Greub-Lenz-Nierste choice of evanescent operators and obtain \begin{align} \left<\mathcal{O}_1\right>/m_D=& 0.042(4)\text{GeV}^3, \nonumber \\ \left<\mathcal{O}_2\right>/m_D=& -0.078(4)\text{GeV}^3, \nonumber \\ \left<\mathcal{O}_3\right>/m_D=& 0.033(2)\text{GeV}^3, \nonumber \\ \left<\mathcal{O}_4\right>/m_D=& 0.155(10)\text{GeV}^3, \nonumber \\ \left<\mathcal{O}_5\right>/m_D=& 0.058(6)\text{GeV}^3.\nonumber \end{align}" Submission original under an indefinite embargo labeled 'Open Access'. The submission was exported from vireo on 2015-07-22 without embargo terms The student, Chia Cheng Chang, accepted the attached license on 2015-04-20 at 18:40. The student, Chia Cheng Chang, submitted this Dissertation for approval on 2015-04-22 at 17:23. This Dissertation was approved for publication on 2015-04-23 at 16:18. DSpace SAF Submission Ingestion Package generated from Vireo submission #7968 on 2015-07-22 at 10:32:59 Made available in DSpace on 2015-07-22T22:17:12Z (GMT). No. of bitstreams: 2 CHANG-DISSERTATION-2015.pdf: 1434805 bytes, checksum: aa2a256b7df9515792e58390d1c747bb (MD5) LICENSE.txt: 4213 bytes, checksum: 78109896b76a5f3bb77287b3296daa5a (MD5) Previous issue date: 2015-04-23 application/pdf http://hdl.handle.net/2142/78432 en Copyright 2015 Chia Cheng Chang lattice quantum chromodynamics (QCD) D-meson mixing flavor physics Short-distance matrix elements for D-meson mixing for 2+1 flavor lattice QCD text text 2015-5 Physics Physics University of Illinois at Urbana-Champaign Dissertation Ph.D.