Charmed-meson decay constants in three-flavor lattice QCD

被引：126

作者：

Aubin, C

Bernard, C

DeTar, C

Di Pierro, M

Freeland, ED

Gottlieb, S

Heller, UM

Hetrick, JE

El-Khadra, AX

Kronfeld, AS

Levkova, L

Mackenzie, PB

Menscher, D

Maresca, F

Nobes, M

Okamoto, M

Renner, D

Simone, J

Sugar, R

Toussaint, D

Trottier, HD

机构：

[1] Columbia Univ, Dept Phys, New York, NY 10027 USA

[2] Washington Univ, Dept Phys, St Louis, MO 63130 USA

[3] Univ Utah, Dept Phys, Salt Lake City, UT 84112 USA

[4] Depaul Univ, Sch Comp Sci Telecommun & Informat Syst, Chicago, IL 60604 USA

[5] Art Inst Chicago, Liberal Arts Dept, Sch, Chicago, IL 60603 USA

[6] Indiana Univ, Dept Phys, Bloomington, IN 47405 USA

[7] Amer Phys Soc, Ridge, NY 11961 USA

[8] Univ Pacific, Dept Phys, Stockton, CA 95211 USA

[9] Univ Illinois, Dept Phys, Urbana, IL 61801 USA

[10] Fermilab Natl Accelerator Lab, Batavia, IL 60510 USA

[11] Cornell Univ, Lab Elementary Particle Phys, Ithaca, NY 14853 USA

[12] Univ Arizona, Dept Phys, Tucson, AZ 85721 USA

[13] Univ Calif Santa Barbara, Dept Phys, Santa Barbara, CA 93106 USA

[14] Simon Fraser Univ, Dept Phys, Burnaby, BC V5A 1S6, Canada

来源：

PHYSICAL REVIEW LETTERS | 2005年 / 95卷 / 12期

关键词：

D O I：

10.1103/PhysRevLett.95.122002

中图分类号：

O4 [物理学];

学科分类号：

0702 ;

摘要：

We present the first lattice QCD calculation with realistic sea quark content of the D+-meson decay constant f(D)(+). We use the MILC Collaboration's publicly available ensembles of lattice gauge fields, which have a quark sea with two flavors (up and down) much lighter than a third (strange). We obtain f(D)(+)=201 +/- 3 +/- 17 MeV, where the errors are statistical and a combination of systematic errors. We also obtain f(Ds)=249 +/- 3 +/- 16 MeV for the D-s meson.

引用

页数：5

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