The bottom (MS)over-bar quark mass from sum rules at next-to-next-to-leading order

被引：119

作者：

Beneke, M ^{[1
]}

Signer, A

机构：

[1] CERN, Div Theory, CH-1211 Geneva 23, Switzerland

[2] Univ Durham, Dept Phys, Durham DH1 3LE, England

来源：

PHYSICS LETTERS B | 1999年 / 471卷 / 2-3期

关键词：

D O I：

10.1016/S0370-2693(99)01348-9

中图分类号：

P1 [天文学];

学科分类号：

0704 ;

摘要：

We determine the bottom <(MS)over bar> quark mass (m) over bar(b) and the quark mass in the potential subtraction scheme from moments of the <b(b)over bar> production cross section and from the mass of the Upsilon 1S state at next-to-next-to-leading order in a reorganized perturbative expansion that sums Coulomb exchange to all orders. We find (m) over bar(b)((m) over bar(b)) = (4.25 +/- 0.08) GeV and m(b,PS)(2 GeV) = (4.59 +/- 0.08) GeV for the potential-subtracted mass at the scale 2 GeV, adopting a conservative error estimate. (C) 1999 Elsevier Science B.V. All rights reserved.

引用

页码：233 / 243

页数：11

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