B0-(B)over-bar0 mixing with quenched lattice NRQCD

被引：8

作者：

Yamada, N ^{[1
]}

Aoki, S

Burkhalter, R

Fukugita, M

Hashimoto, S

Ishikawa, KI

Ishizuka, N

Iwasaki, Y

Kanaya, K

Kaneko, T

Kuramashi, Y

Okawa, M

Onogi, T

Tominaga, S

Tsutsui, N

Ukawa, A

Yoshié, T

机构：

[1] KEK, High Energy Accelerator Res Org, Tsukuba, Ibaraki 3050801, Japan

[2] Univ Tsukuba, Inst Phys, Tsukuba, Ibaraki 3058571, Japan

[3] Univ Tsukuba, Ctr Computat Phys, Tsukuba, Ibaraki 3058571, Japan

[4] Univ Tokyo, Inst Cosm Ray Res, Kashiwa, Chiba 2778582, Japan

[5] Hiroshima Univ, Dept Phys, Higashihiroshima 7398526, Japan

来源：

NUCLEAR PHYSICS B-PROCEEDINGS SUPPLEMENTS | 2001年 / 94卷

基金：

日本学术振兴会;

关键词：

D O I：

10.1016/S0920-5632(01)00980-X

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 our recent results for the B-parameters, which parameterize the DeltaB=2 transition amplitudes. Calculations are made in quenched QCD at beta =5.7, 5.9, and 6.1, using NRQCD for heavy quark and the O(a)-improved action for light quark. The operators are perturbatively renormalized including corrections of O(alphas/am(Q)), We examine scaling behavior of the B-parameters in detail, and discuss the systematic uncertainties using scatter of results with different analysis procedures adopted. As a result, we find B-Bd(m(b)) = 0.84(2)(8), B-Ba/B-Bd = 1.017(10)((+4)(-0)) and B-Sa (m(b)) = 0.87(1)(9)((+1)(-0)) in the quenched approximation.

引用

页码：379 / 382

页数：4

共 6 条

[1] Next-to-leading order QCD corrections to the lifetime difference of Bs mesons [J].

Beneke, M ;

Buchalla, G ;

Greub, C ;

Lenz, A ;

Nierste, U .

PHYSICS LETTERS B, 1999, 459 (04) :631-640

[2]

GOLUTVIN A, 2000, 30 INT C HIGH EN PHY

[3]

Hashimoto S, 2000, PHYS REV D, V62, DOI 10.1103/PhysRevD.62.114502

[4] B decays on the lattice [J].

Hashimoto, S .

NUCLEAR PHYSICS B-PROCEEDINGS SUPPLEMENTS, 2000, 83-4 :3-13

[5] IMPROVED NONRELATIVISTIC QCD FOR HEAVY-QUARK PHYSICS [J].

LEPAGE, GP ;

MAGNEA, L ;

NAKHLEH, C ;

MAGNEA, U ;

HORNBOSTEL, K .

PHYSICAL REVIEW D, 1992, 46 (09) :4052-4067

[6] HEAVY-QUARK BOUND-STATES IN LATTICE QCD [J].

THACKER, BA ;

LEPAGE, GP .

PHYSICAL REVIEW D, 1991, 43 (01) :196-208

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