Matching lattice and continuum four-fermion operators with nonrelativistic QCD and highly improved staggered quarks

被引：10

作者：

Monahan, Christopher ^{[1
]}

Gamiz, Elvira ^{[2
,3
]}

Horgan, Ron ^{[4
]}

Shigemitsu, Junko ^{[5
]}

机构：

[1] Coll William & Mary, Dept Phys, Williamsburg, VA 23187 USA

[2] Univ Granada, CAFPE, E-18071 Granada, Spain

[3] Univ Granada, Dept Fis Teor & Cosmos, E-18071 Granada, Spain

[4] Univ Cambridge, Ctr Math Sci, DAMTP, Cambridge CB3 0WA, England

[5] Ohio State Univ, Dept Phys, Columbus, OH 43210 USA

来源：

PHYSICAL REVIEW D | 2014年 / 90卷 / 05期

关键词：

DECAYS;

D O I：

10.1103/PhysRevD.90.054015

中图分类号：

P1 [天文学];

学科分类号：

0704 ;

摘要：

We match continuum and lattice heavy-light four-fermion operators at one loop in perturbation theory. For the heavy quarks we use nonrelativistic QCD and for the massless light quarks the highly improved staggered quark action. We include the full set of Delta B = 2 operators relevant to neutral B mixing both within and beyond the standard model and match through order alpha(s), Lambda(QCD)/M-b, and alpha(s)/(aM(b)).

引用

页数：13

共 30 条

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[24] Continuum limit of the mobility edge and taste-degeneracy effects in high-temperature lattice QCD with staggered quarks
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[25] Perturbative renormalization for static and domain-wall bilinears and four-fermion operators with improved gauge actions
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[27] Renormalization of the ΔB=2 four-quark operators in lattice nonrelativistic QCD -: art. no. 114502
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PHYSICAL REVIEW LETTERS, 2013, 110 (22)
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PHYSICAL REVIEW D, 2005, 72 (07):
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PHYSICAL REVIEW D, 2004, 69 (07): : 12

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