Threshold t(t)over-bar cross section at next-to-next-to-leading logarithmic order -: art. no. 014014

被引：62

作者：

Hoang, AH

Manohar, AV

Stewart, IW

Teubner, T

机构：

[1] Max Planck Inst Phys & Astrophys, Werner Heisenberg Inst Phys, D-80805 Munich, Germany

[2] Univ Calif San Diego, Dept Phys, La Jolla, CA 92093 USA

[3] Rhein Westfal TH Aachen, Inst Theoret Phys E, D-52056 Aachen, Germany

来源：

PHYSICAL REVIEW D | 2002年 / 65卷 / 01期

关键词：

D O I：

10.1103/PhysRevD.65.014014

中图分类号：

P1 [天文学];

学科分类号：

0704 ;

摘要：

The total cross section for top quark pair production close to threshold in e(+)e(-) annihilation is investigated. Details are given about the calculation at next-to-next-to-leading logarithmic order. The summation of logarithms leads to a convergent expansion for the normalization of the cross section, and a small residual dependence on the subtraction parameter nu. A detailed analysis of the residual v dependence is carried out. A conservative estimate for the remaining uncertainty in the normalization of the total cross section from QCD effects is deltasigma(t (t) over bar)/sigma(t (t) over bar)=+/-3%. This makes precise extractions of the strong coupling and top width feasible, and further studies of electroweak effects mandatory.

引用

页数：19

共 50 条

[1] Next-to-next-to-leading order τ+τ- production cross section close to threshold -: art. no. 053001
Ruiz-Femenía, P
Pich, A
PHYSICAL REVIEW D, 2001, 64 (05):
[2] Rare decay K+ → π+ν(ν)over-bar at the next-to-next-to-leading order in QCD -: art. no. 261805
Buras, AJ
Gorbahn, M
Haisch, U
Nierste, U
PHYSICAL REVIEW LETTERS, 2005, 95 (26)
[3] Analytic results for e+e- → t(t)over-bar and γγ → t(t)over-bar observables near the threshold up to the next-to-next-to-leading order of NRQCD
Penin, AA
Pivovarov, AA
PHYSICS OF ATOMIC NUCLEI, 2001, 64 (02) : 275 - 293
[4] Top quark threshold production at a γγ collider at next-to-next-to-leading order -: art. no. 051501
Czarnecki, A
Melnikov, K
PHYSICAL REVIEW D, 2002, 65 (05):
[5] BR((B)over-bar → Xsγ):: First next-to-next-to-leading order results
Steinhauser, M
NUCLEAR PHYSICS B-PROCEEDINGS SUPPLEMENTS, 2004, 135 : 316 - 320
[6] Charm quark contribution to K+ → π+ν(ν)over-bar at next-to-next-to-leading order
Buras, Andrzej J.
Gorbahn, Martin
Haisch, Ulrich
Nierste, Ulrich
JOURNAL OF HIGH ENERGY PHYSICS, 2006, (11):
[7] Next-to-leading order results for t(t)over-bar-h production at the Tevatron -: art. no. 201804
Reina, L
Dawson, S
PHYSICAL REVIEW LETTERS, 2001, 87 (20) : 1 - 201804
[8] Percent-Level-Precision Physics at the Tevatron: Next-to-Next-to-Leading Order QCD Corrections to q(q)over-bar → t(t)over-bar+X
Baernreuther, Peter
Czakon, Michal
Mitov, Alexander
PHYSICAL REVIEW LETTERS, 2012, 109 (13)
[9] Next-to-next-to-leading order corrections to (B)over-bar → Xul(v)over-bar in the shape-function region
Asatrian, H. M.
Greub, C.
Pecjak, B. D.
PHYSICAL REVIEW D, 2008, 78 (11):
[10] Top quark mass definition and t(t)over-bar production near threshold at the Next Linear Collider -: art. no. 074012
Yakovlev, O
Groote, S
PHYSICAL REVIEW D, 2001, 63 (07)

← 1 2 3 4 5 →