Heavy-to-light-quark decays with two-loop accuracy

被引：44

作者：

Blokland, I ^{[1
]}

Czarnecki, A

Slusarczyk, M

Tkachov, F

机构：

[1] Univ Alberta, Dept Phys, Edmonton, AB T6G 2J1, Canada

[2] Russian Acad Sci, Inst Nucl Res, Moscow 117312, Russia

来源：

PHYSICAL REVIEW LETTERS | 2004年 / 93卷 / 06期

关键词：

D O I：

10.1103/PhysRevLett.93.062001

中图分类号：

O4 [物理学];

学科分类号：

0702 ;

摘要：

We present a determination of a new class of three-loop Feynman diagrams describing heavy-to-light transitions. We apply it to find the O(alpha(s)(2)) corrections to the top quark decay t-->bW and to the distribution of lepton invariant mass in the semileptonic b quark decay b-->ulnu. We also confirm the previously determined total rate of that process as well as the O(alpha(2)) corrections to the muon lifetime.

引用

页码：062001 / 1

页数：4

共 16 条

[1] 3-LOOP ON-SHELL CHARGE RENORMALIZATION WITHOUT INTEGRATION - LAMBDA-QED(MS)BAR TO 4 LOOPS [J].

BROADHURST, DJ .

ZEITSCHRIFT FUR PHYSIK C-PARTICLES AND FIELDS, 1992, 54 (04) :599-606

[2]

Chetyrkin KG, 1999, PHYS REV D, V60, DOI 10.1103/PhysRevD.60.114015

[3] Semileptonic b→u decays:: Lepton invariant mass spectrum -: art. no. 131801 [J].

Czarnecki, A ;

Melnikov, K .

PHYSICAL REVIEW LETTERS, 2002, 88 (13) :4

[4] Two-loop QCD corrections to top quark width [J].

Czarnecki, A ;

Melnikov, K .

NUCLEAR PHYSICS B, 1999, 544 (03) :520-531

[5] Two-loop QCD corrections to b->c transitions at zero recoil: Analytical results [J].

Czarnecki, A ;

Melnikov, K .

NUCLEAR PHYSICS B, 1997, 505 (1-2) :65-83

[6] Two-loop QCD corrections to b->c transitions at zero recoil [J].

Czarnecki, A .

PHYSICAL REVIEW LETTERS, 1996, 76 (22) :4124-4127

[7]

Franzkowski J, 1998, EUR PHYS J C, V5, P517

[8] Review of particle physics -: art. no. 010001 [J].

Hagiwara, K ;

Hikasa, K ;

Nakamura, K ;

Tanabashi, M ;

Aguilar-Benitez, M ;

Amsler, C ;

Barnett, RM ;

Burchat, PR ;

Carone, CD ;

Caso, C ;

Conforto, G ;

Dahl, O ;

Doser, M ;

Eidelman, S ;

Feng, JL ;

Gibbons, L ;

Goodman, M ;

Grab, C ;

Groom, DE ;

Gurtu, A ;

Hayes, KG ;

Hernández-Rey, JJ ;

Honscheid, K ;

Kolda, C ;

Mangano, ML ;

Manley, DM ;

Manohar, AV ;

March-Russell, J ;

Masoni, A ;

Miquel, R ;

Monig, K ;

Murayama, H ;

Navas, S ;

Olive, KA ;

Pape, L ;

Patrignani, C ;

Piepke, A ;

Roos, M ;

Terning, J ;

Tornqvist, NA ;

Trippe, TG ;

Vogel, P ;

Wohl, CG ;

Workman, RL ;

Yao, WM ;

Armstrong, B ;

Gee, PS ;

Lugovsky, KS ;

Lugovsky, SB ;

Lugovsky, VS .

PHYSICAL REVIEW D, 2002, 66 (01)

[9] QCD CORRECTIONS TO SEMILEPTONIC DECAYS OF HEAVY QUARKS [J].

JEZABEK, M ;

KUHN, JH .

NUCLEAR PHYSICS B, 1989, 314 (01) :1-6

[10] High-precision calculation of multiloop Feynman integrals by difference equations [J].

Laporta, S .

INTERNATIONAL JOURNAL OF MODERN PHYSICS A, 2000, 15 (32) :5087-5159

← 1 2 →