B- and D-meson leptonic decay constants and quark masses from four-flavor lattice QCD

Conference · Sat Sep 29 04:00:00 EDT 2018

OSTI ID:1487408

Bazavov, A. ^[1]; Bernard, C. ^[2]; Brambilla, N. ^[3]; Brown, N. ^[2]; DeTar, C. ^[4]; Khadra, A.X. El ^[5]; Gámiz, E. ^[6]; Gottlieb, Steven ^[7]; Heller, U. M. ^[8]; Komijani, J. ^[9]; Kronfeld, A. S. ^[5]; Laiho, J. ^[10]; Mackenzie, P. M. ^[5]; Neil, E. T. ^[11]; Simone, J. N. ^[5]; Sugar, R. L. ^[12]; Toussaint, D. ^[13]; Van de Water, R. S. ^[5]; Vairo, A. ^[14]

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1. Michigan State U.
2. George Washington U.
3. TUM-IAS, Munich
4. Utah U.
5. Fermilab
6. CAFPE, Granada
7. Indiana U.
8. ANL, APS
9. Glasgow U.
10. Syracuse U.
11. RIKEN BNL
12. UC, Santa Barbara
13. Arizona U.
14. Munich, Tech. U.

We describe a recent lattice-QCD calculation of the leptonic decay constants of heavy-light pseudoscalar mesons containing charm and bottom quarks and of the masses of the up, down, strange, charm, and bottom quarks. Results for these quantities are of the highest precision to date. Calculations use 24 isospin-symmetric ensembles of gauge-field configurations with six different lattice spacings as small as approximately 0.03 fm and several values of the light quark masses down to physical values of the average up- and down-sea-quark masses. We use the highly-improved staggered quark (HISQ) formulation for valence and sea quarks, including the bottom quark. The analysis employs heavy-quark effective theory (HQET). A novel HQET method is used in the determination of the quark masses.

• Research Organization: Fermi National Accelerator Laboratory (FNAL), Batavia, IL (United States)
• Sponsoring Organization: USDOE Office of Science (SC), High Energy Physics (HEP) (SC-25)
• Contributing Organization: TUMQCD; Fermilab Lattice; MILC
• DOE Contract Number: AC02-07CH11359
• OSTI ID: 1487408
• Report Number(s): arXiv:1810.00250; CIPANP2018-DeTar; FERMILAB-CONF-18-538-T; 1696581
• Country of Publication: United States
• Language: English

Related Subjects

72 PHYSICS OF ELEMENTARY PARTICLES AND FIELDS