Strange-quark mass from tau-lepton decays with O(αs3) accuracy -: art. no. 012003

被引：63
|
作者：
Baikov, PA [1 ]
Chetyrkin, KG
Kühn, JH
机构：
[1] Moscow MV Lomonosov State Univ, Inst Nucl Phys, Moscow 119899, Russia
[2] Univ Karlsruhe, Inst Theoret Teilchenphys, D-76128 Karlsruhe, Germany
来源：
PHYSICAL REVIEW LETTERS | 2005年 / 95卷 / 01期
关键词：
D O I：
10.1103/PhysRevLett.95.012003
中图分类号：
O4 [物理学];
学科分类号：
0702 ;
摘要：
The first complete calculation of the quadratic quark mass correction to the correlator of the two currents relevant for the strangeness-changing semihadronic tau-decay rate is presented including its real part at the four-loop level. This allows us to perform the extraction of the strange-quark mass m(s) from the decay width of the tau-lepton with full O(alpha(3)(s)) accuracy. In agreement with previous estimates, the newly computed alpha(3)(s) term proves to be rather large. This justifies inclusion of the similarly estimated alpha(4)(s) term in phenomenological analysis. Combined with an updated value of V-us and an "improved" version of the renormalization group improvement of the perturbative series, this leads to an increase of the central value of m(s) by about 20% and a partial reduction of the theoretical uncertainty by about 50%.
引用
收藏
页数：4
相关论文
共 28 条
  • [21] Longitudinal, transverse-plus and transverse-minus W bosons in unpolarized top quark decays at O(αs) -: art. no. 031501
    Fischer, M
    Groote, S
    Körner, JG
    Mauser, MC
    PHYSICAL REVIEW D, 2001, 63 (03):
  • [22] Heavy-quarkonium creation and annihilation with O(αs3lnαs) accuracy -: art. no. 212001
    Kniehl, BA
    Penin, AA
    Smirnov, VA
    Steinhauser, M
    PHYSICAL REVIEW LETTERS, 2003, 90 (21)
  • [23] Top quark mass determination and O(αS5m) correction to the toponium 1S energy level -: art. no. 071501
    Kiyo, Y
    Sumino, Y
    PHYSICAL REVIEW D, 2003, 67 (07):
  • [24] Search for charged Higgs bosons from top quark decays in p(p)over-barcollisions at √s=1.96 TeV -: art. no. 042003
    Abulencia, A
    Acosta, D
    Adelman, J
    Affolder, T
    Akimoto, T
    Albrow, MG
    Ambrose, D
    Amerio, S
    Amidei, D
    Anastassov, A
    Anikeev, K
    Annovi, A
    Antos, J
    Aoki, M
    Apollinari, G
    Arguin, JF
    Arisawa, T
    Artikov, A
    Ashmanskas, W
    Attal, A
    Azfar, F
    Azzi-Bacchetta, P
    Azzurri, P
    Bacchetta, N
    Bachacou, H
    Badgett, W
    Barbaro-Galtieri, A
    Barnes, VE
    Barnett, BA
    Baroiant, S
    Bartsch, V
    Bauer, G
    Bedeschi, F
    Behari, S
    Belforte, S
    Bellettini, G
    Bellinger, J
    Belloni, A
    Ben-Haim, E
    Benjamin, D
    Beretvas, A
    Beringer, J
    Berry, T
    Bhatti, A
    Binkley, M
    Bisello, D
    Bishai, M
    Blair, RE
    Blocker, C
    Bloom, K
    PHYSICAL REVIEW LETTERS, 2006, 96 (04)
  • [25] Precision top-quark mass measurement in the lepton plus jets topology in p(p)over-bar collisions at √s=1.96 TeV -: art. no. 022004
    Abulencia, A
    Acosta, D
    Adelman, J
    Affolder, T
    Akimoto, T
    Albrow, MG
    Ambrose, D
    Amerio, S
    Amidei, D
    Anastassov, A
    Anikeev, K
    Annovi, A
    Antos, J
    Aoki, M
    Apollinari, G
    Arguin, JF
    Arisawa, T
    Artikov, A
    Ashmanskas, W
    Attal, A
    Azfar, F
    Azzi-Bacchetta, P
    Azzurri, P
    Bacchetta, N
    Bachacou, H
    Badgett, W
    Barbaro-Galtieri, A
    Barnes, VE
    Barnett, BA
    Baroiant, S
    Bartsch, V
    Bauer, G
    Bedeschi, F
    Behari, S
    Belforte, S
    Bellettini, G
    Bellinger, J
    Belloni, A
    Ben-Haim, E
    Benjamin, D
    Beretvas, A
    Beringer, J
    Berry, T
    Bhatti, A
    Binkley, M
    Bisello, D
    Bishai, M
    Blair, RE
    Blocker, C
    Bloom, K
    PHYSICAL REVIEW LETTERS, 2006, 96 (02)
  • [26] Heavy-quarkonium creation and annihilation with O(αs3lnαs)accuracy (vol 90, art no 212001, 2003) -: art. no. 139903
    Kniehl, BA
    Penin, AA
    Smirnov, VA
    Steinhauser, M
    PHYSICAL REVIEW LETTERS, 2003, 91 (13)
  • [27] Aircraft observations of NO, NOy, CO, and O3 in the upper troposphere from 60°N to 60°S -: Interhemispheric differences at mitlatitudes -: art. no. 1598
    Baehr, J
    Schlager, H
    Ziereis, H
    Stock, P
    van Velthoven, P
    Busen, R
    Ström, J
    Schumann, U
    GEOPHYSICAL RESEARCH LETTERS, 2003, 30 (11)
  • [28] Strange quark mass from pseudoscalar sum rule with \documentclass[12pt]{minimal} \usepackage{amsmath} \usepackage{wasysym} \usepackage{amsfonts} \usepackage{amssymb} \usepackage{amsbsy} \usepackage{mathrsfs} \usepackage{upgreek} \setlength{\oddsidemargin}{-69pt} \begin{document}$O(\alpha_s^4)$\end{document} accuracy
    K.G. Chetyrkin
    A. Khodjamirian
    The European Physical Journal C - Particles and Fields, 2006, 46 (3): : 721 - 728
123