TY - JOUR
T1 - D -meson semileptonic decays to pseudoscalars from four-flavor lattice QCD
AU - (Fermilab Lattice and MILC Collaborations)
AU - Bazavov, Alexei
AU - Detar, Carleton
AU - El-Khadra, Aida X.
AU - Gámiz, Elvira
AU - Gelzer, Zechariah
AU - Gottlieb, Steven
AU - Jay, William I.
AU - Jeong, Hwancheol
AU - Kronfeld, Andreas S.
AU - Li, Ruizi
AU - Lytle, Andrew T.
AU - Mackenzie, Paul B.
AU - Neil, Ethan T.
AU - Primer, Thomas
AU - Simone, James N.
AU - Sugar, Robert L.
AU - Toussaint, Doug
AU - Van De Water, Ruth S.
AU - Vaquero, Alejandro
N1 - We thank Claude Bernard, Urs Heller, Javad Komijani, and Jack Laiho for collaboration and essential contributions to previous projects, which paved the way for this work. We also thank Claude Bernard for helpful advice about scale setting and about the chiral expansion and Javad Komijani for useful correspondence regarding on the HISQ ensembles. We thank Jake Bennett and Alan Schwartz for answering questions about the Belle data. We thank the BES III Collaboration, and especially Lei Li and Hailong Ma, for providing us with their data for as well as correlation data for . We thank Ryan Mitchell for useful comments about the CLEO and BES III detectors. We thank William Parrott for answering questions about HPQCD’s evaluation of LFU ratios. This material is based upon work supported in part by the U.S. Department of Energy, Office of Science under grant Contracts No. DE-SC0010120 (S. G.), No. DE-SC0011090 (W. J.), No. DE-SC0021006 (W. J.), No. DE-SC0015655 (A. X. K., Z. G., A. T. L.), and No. DE-SC0010005 (E. T. N.); by the U.S. National Science Foundation under Grants No. PHY17-19626 and No. PHY20-13064 (C. D., A. V.); by the Simons Foundation under their Simons Fellows in Theoretical Physics program (A. X. K.); by SRA (Spain) under Grant No. PID2019–106087GB-C21 / 10.13039/501100011033 (E. G.); by the Junta de Andalucía (Spain) under Grants No. FQM-101, No. A-FQM-467-UGR18 (FEDER), and No. P18-FR-4314 (E. G.); by AEI (Spain) under Grant No. RYC2020-030244-I / AEI / 10.13039/501100011033 (A. V.). 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. Fermilab is managed by Fermi Research Alliance, LLC (FRA), acting under Contract No. DE-AC02-07CH11359. Computations for this work were carried out in part on facilities of the USQCD Collaboration, which are funded by the Office of Science of the U.S. Department of Energy. An award of computer time was provided by the Innovative and Novel Computational Impact on Theory and Experiment (INCITE) program. This research used resources of the Argonne Leadership Computing Facility, which is a DOE Office of Science User Facility supported under Contract No. DE-AC02-06CH11357. This research also used resources of the Oak Ridge Leadership Computing Facility, which is a DOE Office of Science User Facility supported under Contract No. DE-AC05-00OR22725. This research used resources of the National Energy Research Scientific Computing Center (NERSC), a U.S. Department of Energy Office of Science User Facility located at Lawrence Berkeley National Laboratory, operated under Contract No. DE-AC02-05CH11231. The authors acknowledge support from the ASCR Leadership Computing Challenge (ALCC) in the form of time on the computers Summit and Theta. The authors acknowledge the Texas Advanced Computing Center (TACC) at The University of Texas at Austin for providing HPC resources that have contributed to the research results reported within this paper. This research is part of the Frontera computing project at the Texas Advanced Computing Center. Frontera is made possible by National Science Foundation Award No. OAC-1818253 . This work used the Extreme Science and Engineering Discovery Environment (XSEDE), which is supported by National Science Foundation Grant No. ACI-1548562. This work used XSEDE Ranch through the allocation TG-MCA93S002 .
PY - 2023/5/1
Y1 - 2023/5/1
N2 - We present lattice-QCD calculations of the hadronic form factors for the semileptonic decays D→πℓν, D→Kℓν, and Ds→Kℓν. Our calculation uses the highly improved staggered quark (HISQ) action for all valence and sea quarks and includes Nf=2+1+1 MILC ensembles with lattice spacings ranging from a≈0.12 fm down to 0.042 fm. At most lattice spacings, an ensemble with physical-mass light quarks is included. The HISQ action allows all the quarks to be treated with the same relativistic light-quark action, allowing for nonperturbative renormalization using partial conservation of the vector current. We combine our results with experimental measurements of the differential decay rates to determine |Vcd|D→π=0.2238(11)Expt(15)QCD(04)EW(02)SIB[22]QED and |Vcs|D→K=0.9589(23)Expt(40)QCD(15)EW(05)SIB[95]QED. This result for |Vcd| is the most precise to date, with a lattice-QCD error that is, for the first time for the semileptonic extraction, at the same level as the experimental error. Using recent measurements from BES III, we also give the first-ever determination of |Vcd|Ds→K=0.258(15)Expt(01)QCD[03]QED from Ds→Klν. Our results also furnish new Standard Model calculations of the lepton flavor universality ratios Rμ/eD→π=0.98671(17)QCD[500]QED, Rμ/eD→K=0.97606(16)QCD[500]QED, and Rμ/eDs→K=0.98099(10)QCD[500]QED, which are consistent within 2σ with experimental measurements. Our extractions of |Vcd| and |Vcs|, when combined with a value for |Vcb|, provide the most precise test of second-row Cabibbo-Kobayashi-Maskawa unitarity, finding agreement with unitarity at the level of one standard deviation.
AB - We present lattice-QCD calculations of the hadronic form factors for the semileptonic decays D→πℓν, D→Kℓν, and Ds→Kℓν. Our calculation uses the highly improved staggered quark (HISQ) action for all valence and sea quarks and includes Nf=2+1+1 MILC ensembles with lattice spacings ranging from a≈0.12 fm down to 0.042 fm. At most lattice spacings, an ensemble with physical-mass light quarks is included. The HISQ action allows all the quarks to be treated with the same relativistic light-quark action, allowing for nonperturbative renormalization using partial conservation of the vector current. We combine our results with experimental measurements of the differential decay rates to determine |Vcd|D→π=0.2238(11)Expt(15)QCD(04)EW(02)SIB[22]QED and |Vcs|D→K=0.9589(23)Expt(40)QCD(15)EW(05)SIB[95]QED. This result for |Vcd| is the most precise to date, with a lattice-QCD error that is, for the first time for the semileptonic extraction, at the same level as the experimental error. Using recent measurements from BES III, we also give the first-ever determination of |Vcd|Ds→K=0.258(15)Expt(01)QCD[03]QED from Ds→Klν. Our results also furnish new Standard Model calculations of the lepton flavor universality ratios Rμ/eD→π=0.98671(17)QCD[500]QED, Rμ/eD→K=0.97606(16)QCD[500]QED, and Rμ/eDs→K=0.98099(10)QCD[500]QED, which are consistent within 2σ with experimental measurements. Our extractions of |Vcd| and |Vcs|, when combined with a value for |Vcb|, provide the most precise test of second-row Cabibbo-Kobayashi-Maskawa unitarity, finding agreement with unitarity at the level of one standard deviation.
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U2 - 10.1103/PhysRevD.107.094516
DO - 10.1103/PhysRevD.107.094516
M3 - Article
AN - SCOPUS:85161149916
SN - 2470-0010
VL - 107
JO - Physical Review D
JF - Physical Review D
IS - 9
M1 - 094516
ER -