Running mass ms at low scale from the heavy-light meson decay constants

被引：5

作者：

Badalian, A. M. ^{[1
]}

Bakker, B. L. G. ^{[2
]}

机构：

[1] Inst Theoret & Expt Phys, Moscow 117218, Russia

[2] Virje Univ, Dept Phys & Astron, Amsterdam, Netherlands

来源：

JETP LETTERS | 2007年 / 86卷 / 10期

关键词：

DYNAMICAL REGIMES; QUARK MASSES; QCD; MODEL;

D O I：

10.1134/S0021364007220043

中图分类号：

O4 [物理学];

学科分类号：

0702 ;

摘要：

It is shown that a 25(20)% difference between the decay constants f(Ds)(f(Bs)) and f(D)(f(B)) occurs due to large differences in the pole masses of the s and d(u) quarks. The values. eta(D) = f (Ds)/f(D) approximate to 1.23(15), recently observed in the CLEO experiment, and eta(B) = f(Bs) /f(B) approximate to 1.20, obtained in unquenched lattice QCD, can be reached only if, in the relativistic Hamiltonian the running mass, m s at low scale is m(s) (similar to 0.5 GeV) = 170-200 MeV. Our results follow from the analytical expression for the pseudoscalar decay constant f(P) based on the path-integral representation of the meson Green's function.

引用

页码：634 / 636

页数：3

共 47 条

[1] Direct measurement of the pseudoscalar decay constant fD+ [J].

Ablikim, M ;

Bai, JZ ;

Ban, Y ;

Bian, JG ;

Cai, X ;

Chang, JF ;

Chen, HF ;

Chen, HS ;

Chen, HX ;

Chen, JC ;

Chen, J ;

Chen, ML ;

Chen, YB ;

Chi, SP ;

Chu, YP ;

Cui, XZ ;

Dai, HL ;

Dai, YS ;

Deng, ZY ;

Dong, LY ;

Dong, QF ;

Du, SX ;

Du, ZZ ;

Fang, J ;

Fang, SS ;

Fu, CD ;

Fu, H ;

Gao, CS ;

Gao, YN ;

Gong, MY ;

Gong, WX ;

Gu, SD ;

Guo, YN ;

Guo, YQ ;

He, KL ;

He, M ;

He, X ;

Heng, YK ;

Hu, HM ;

Hu, T ;

Huang, XP ;

Huang, XT ;

Ji, XB ;

Jiang, CH ;

Jiang, XS ;

Jin, DP ;

Jin, S ;

Jin, Y ;

Jin, Y .

PHYSICS LETTERS B, 2005, 610 (3-4) :183-191

[2]

ALBIENDI G, 2001, PHYS LETT B, V516, P236

[3] Improved measurement of B(D+→μ+ν) and the pseudoscalar decay constant fD+ -: art. no. 251801 [J].

Artuso, M ;

Boulahouache, C ;

Blusk, S ;

Butt, J ;

Dorjkhaidav, O ;

Li, J ;

Menaa, N ;

Mountain, R ;

Nandakumar, R ;

Randrianarivony, K ;

Redjimi, R ;

Sia, R ;

Skwarnicki, T ;

Stone, S ;

Wang, JC ;

Zhang, K ;

Csorna, SE ;

Bonvicini, G ;

Cinabro, D ;

Dubrovin, M ;

Lincoln, A ;

Briere, RA ;

Chen, GP ;

Chen, J ;

Ferguson, T ;

Tatishvili, G ;

Vogel, H ;

Watkins, ME ;

Rosner, JL ;

Adam, NE ;

Alexander, JP ;

Berkelman, K ;

Cassel, DG ;

Crede, V ;

Duboscq, JE ;

Ecklund, KM ;

Ehrlich, R ;

Fields, L ;

Gibbons, L ;

Gittelman, B ;

Gray, R ;

Gray, SW ;

Hartill, DL ;

Heltsley, BK ;

Hertz, D ;

Jones, CD ;

Kandaswamy, J ;

Kreinick, DL ;

Kuznetsov, VE ;

Mahlke-Krüger, H .

PHYSICAL REVIEW LETTERS, 2005, 95 (25)

[4]

ARTUSO M, ARXIV07040629

[5]

ARTUSO M, HEPEX0508057

[6]

AUBERT B, HEPEX0607094

[7] Charmed-meson decay constants in three-flavor lattice QCD [J].

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 .

PHYSICAL REVIEW LETTERS, 2005, 95 (12)

[8] Light pseudoscalar decay constants, quark masses, and low energy constants from three-flavor lattice QCD [J].

Aubin, C ;

Bernard, C ;

DeTar, C ;

Osborn, J ;

Gottlieb, S ;

Gregory, EB ;

Toussaint, D ;

Heller, UM ;

Hetrick, JE ;

Sugar, R .

PHYSICAL REVIEW D, 2004, 70 (11) :114501-1

[9]

AUBIN C, HEPLAT0506030

[10] Decay constants of the heavy-light mesons from the field correlator method [J].

Badalian, A. M. ;

Bakker, B. L. G. ;

Simonov, Yu. A. .

PHYSICAL REVIEW D, 2007, 75 (11)

← 1 2 3 4 5 →