Heavy-light decay constants with three dynamical flavors

被引：12

作者：

Bernard, C ^{[1
]}

Burch, T

Datta, S

DeGrand, T

DeTar, C

Gottlieb, S

Heller, UM

Orginos, K

Sugar, R

Toussaint, D

机构：

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

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

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

[4] Indiana Univ, Dept Phys, Boulder, CO 80309 USA

[5] Univ Colorado, Dept Phys, Boulder, CO 80309 USA

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

[7] Florida State Univ, SCRI, Tallahassee, FL 32306 USA

[8] BNL, RIKEN, Res Ctr, Upton, NY 11973 USA

来源：

NUCLEAR PHYSICS B-PROCEEDINGS SUPPLEMENTS | 2002年 / 106卷

基金：

美国国家科学基金会;

关键词：

D O I：

10.1016/S0920-5632(01)01731-5

中图分类号：

O412 [相对论、场论]; O572.2 [粒子物理学];

学科分类号：

摘要：

We present preliminary results for the heavy-light leptonic decay constants in the presence of three light dynamical flavors. We generate dynamical configurations with improved staggered and gauge actions and analyze them for heavy-light physics with tadpole improved clover valence quarks. When the scale is set by m(rho), we find an increase of approximate to 23% in f(B) with three dynamical flavors over the quenched case. Discretization errors appear to be small (less than or similar to3%) in the quenched case but have not yet been measured in the dynamical case.

引用

页码：412 / 414

页数：3

共 17 条

[1] LATTICE QCD ON SMALL COMPUTERS [J].

ALFORD, M ;

DIMM, W ;

LEPAGE, GP ;

HOCKNEY, G ;

MACKENZIE, PB .

PHYSICS LETTERS B, 1995, 361 (1-4) :87-94

[2] Lattice determination of heavy-light decay constants [J].

Bernard, C ;

DeGrand, T ;

DeTar, C ;

Gottlieb, S ;

Heller, UM ;

Hetrick, JE ;

Ishizuka, N ;

McNeile, C .

PHYSICAL REVIEW LETTERS, 1998, 81 (22) :4812-4815

[3] QCD spectrum with three quark flavors [J].

Bernard, C ;

Burch, T ;

Orginos, K ;

Toussaint, D ;

DeGrand, TA ;

DeTar, C ;

Datta, S ;

Gottlieb, S ;

Heller, UM ;

Sugar, R .

PHYSICAL REVIEW D, 2001, 64 (05)

[4] fB for various actions:: Approaching the continuum limit with dynamical fermions [J].

Bernard, C ;

Datta, S ;

DeTar, C ;

Gottlieb, S ;

Heller, UM ;

Hetrick, J ;

McNeile, C ;

Orginos, K ;

Sugar, R ;

Toussaint, D .

NUCLEAR PHYSICS B-PROCEEDINGS SUPPLEMENTS, 2001, 94 :346-349

[5] Scaling tests of the improved Kogut-Susskind quark action [J].

Bernard, C ;

Burch, T ;

DeGrand, TA ;

DeTar, C ;

Gottlieb, S ;

Heller, UM ;

Hetrick, JE ;

Orginos, K ;

Sugar, B ;

Toussaint, D .

PHYSICAL REVIEW D, 2000, 61 (11)

[6] Static quark potential in three flavor QCD [J].

Bernard, C ;

Burch, T ;

Orginos, K ;

Toussaint, D ;

DeGrand, TA ;

DeTar, C ;

Gottlieb, S ;

Heller, UM ;

Hetrick, JE ;

Sugar, B .

PHYSICAL REVIEW D, 2000, 62 (03) :1-7

[7] Massive fermions in lattice gauge theory [J].

ElKhadra, AX ;

Kronfeld, AS ;

Mackenzie, PB .

PHYSICAL REVIEW D, 1997, 55 (07) :3933-3957

[8] Flavor-symmetry restoration and Symanzik improvement for staggered quarks [J].

Lepage, GP .

PHYSICAL REVIEW D, 1999, 59 (07) :1-4

[9] COMPUTATION OF THE ACTION FOR ON-SHELL IMPROVED LATTICE GAUGE-THEORIES AT WEAK COUPLING [J].

LUSCHER, M ;

WEISZ, P .

PHYSICS LETTERS B, 1985, 158 (03) :250-254

[10] ON-SHELL IMPROVED LATTICE GAUGE-THEORIES [J].

LUSCHER, M ;

WEISZ, P .

COMMUNICATIONS IN MATHEMATICAL PHYSICS, 1985, 97 (1-2) :59-77

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