@article{f15ad50155874ff49156c65ad4e3b622,
title = "Short-distance matrix elements for D 0 -meson mixing from N f = 2 + 1 lattice QCD",
abstract = "We calculate in three-flavor lattice QCD the short-distance hadronic matrix elements of all five ΔC=2 four-fermion operators that contribute to neutral D-meson mixing both in and beyond the Standard Model. We use the MILC Collaboration's Nf=2+1 lattice gauge-field configurations generated with asqtad-improved staggered sea quarks. We also employ the asqtad action for the valence light quarks and use the clover action with the Fermilab interpretation for the charm quark. We analyze a large set of ensembles with pions as light as Mπ≈180 MeV and lattice spacings as fine as a≈0.045 fm, thereby enabling good control over the extrapolation to the physical pion mass and continuum limit. We obtain for the matrix elements in the M{\=S}-NDR scheme using the choice of evanescent operators proposed by Beneke et al., evaluated at 3 GeV, D0|Oi|{\=D}0={0.0805(55)(16),-0.1561(70)(31),0.0464(31)(9),0.2747(129)(55),0.1035(71)(21)} GeV4 (i=1-5). The errors shown are from statistics and lattice systematics, and the omission of charmed sea quarks, respectively. To illustrate the utility of our matrix-element results, we place bounds on the scale of CP-violating new physics in D0 mixing, finding lower limits of about 10-50×103 TeV for couplings of O(1). To enable our results to be employed in more sophisticated or model-specific phenomenological studies, we provide the correlations among our matrix-element results. For convenience, we also present numerical results in the other commonly used scheme of Buras, Misiak, and Urban.",
author = "A. Bazavov and C. Bernard and Bouchard, {C. M.} and Chang, {C. C.} and C. Detar and D. Du and El-Khadra, {A. X.} and Freeland, {E. D.} and E. G{\'a}miz and Steven Gottlieb and Heller, {U. M.} and Kronfeld, {A. S.} and J. Laiho and Mackenzie, {P. B.} and Neil, {E. T.} and Simone, {J. N.} and R. Sugar and D. Toussaint and {Van De Water}, {R. S.} and R. Zhou",
note = "Funding Information: We thank Alan Schwartz, Vittorio Lubicz, Silvano Simula, Roni Harnik, and Joachim Kopp for useful correspondence. Computations for this work were carried out with resources provided by the USQCD Collaboration, the National Energy Research Scientific Computing Center, and the Argonne Leadership Computing Facility, which are funded by the Office of Science of the U.S. Department of Energy, and with resources provided by the National Institute for Computational Science and the Texas Advanced Computing Center, which are funded through the National Science Foundation{\textquoteright}s Teragrid/XSEDE Program. This work was supported in part by the U.S. Department of Energy under Grants No. DE-FG02-91ER40628 (C. B.) No. DE-FC02-06ER41446 (C. D.) No. DE-SC0010120 (S. G.), No. DE-SC0010005 (E. T. N.), No. DE-FG02-91ER40661 (S. G., R. Z.), No. DE-FG02-13ER42001 (C. C. C., D. D., A. X. K.), No. DE-SC0015655 (A. X. K.), No. DE-FG02-13ER41976 (D. T.); by the U.S. National Science Foundation under Grants No. PHY10-67881 and No. PHY14-14614 (C. D.), No. PHY14-17805 (D. D., J. L.), and No. PHY13-16748 and No. PHY16-20625 (R. S.); by the Fermilab Fellowship in Theoretical Physics (C. M. B., C. C. C.); by the URA Visiting Scholars{\textquoteright} program (C. M. B., C. C. C., D. D., A. X. K.); by the MINECO (Spain) under Grant No. FPA2013-47836-C-1-P (E. G.); by the Junta de Andaluc{\'i}a (Spain) under Grants No. FQM-101 and No. FQM-6552 (E. G.); by the European Commission (EC) under Grant No. PCIG10-GA-2011-303781 (E. G.); by the German Excellence Initiative and the European Union Seventh Framework Program under Grant Agreement No. 291763 as well as the European Union{\textquoteright}s Marie Curie COFUND program (A. S. K.). Brookhaven National Laboratory is supported by the Department of Energy under Contract No. DE-SC0012704. Fermilab is operated by Fermi Research Alliance, LLC, under Contract No. DE-AC02-07CH11359 with the United States Department of Energy, Office of Science, Office of High Energy Physics. This document was prepared by the Fermilab Lattice and MILC Collaborations using the resources of the Fermi National Accelerator Laboratory (Fermilab), a U.S. Department of Energy, Office of Science, HEP User Facility. Publisher Copyright: {\textcopyright} 2018 authors.",
year = "2018",
month = feb,
day = "1",
doi = "10.1103/PhysRevD.97.034513",
language = "English (US)",
volume = "97",
journal = "Physical Review D",
issn = "2470-0010",
publisher = "American Physical Society",
number = "3",
}