Determination of αs(1 GeV) from the charmonium fine structure -: art. no. 116008

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作者
Badalian, AM [1 ]
Morgunov, VL [1 ]
机构
[1] Inst Theoret & Expt Phys, RU-117218 Moscow, Russia
来源
PHYSICAL REVIEW D | 1999年 / 60卷 / 11期
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P1 [天文学];
学科分类号
0704 ;
摘要
The strong coupling constant alpha(s)(mu) is extracted from the fits to charmonium spectrum and fine structure splittings. The relativistic kinematics is taken into account and relativistic corrections are shown to increase the matrix elements defining spin effects up to 40%. The value of alpha(s)(mu) at the low-energy scale mu = 1.0 +/- 0.2 GeV was found to be alpha(s)(mu) = 0.38 +/- 0.03(exp) + 0.04(theor) which is about 50% lower than the standard perturbative two-loop approximation and is in good agreement with the freezing alpha(s) behavior. [S0556-2821(99)02721-6].
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共 40 条
  • [1] Measurement of the strong coupling constant αs and the vector and axial-vector spectral functions in hadronic tau decays
    Ackerstaff, K
    Alexander, G
    Allison, J
    Altekamp, N
    Anderson, KJ
    Anderson, S
    Arcelli, S
    Asai, S
    Ashby, SF
    Axen, D
    Azuelos, G
    Ball, AH
    Barberio, E
    Barlow, RJ
    Bartoldus, R
    Batley, JR
    Baumann, S
    Bechtluft, J
    Behnke, T
    Bell, KW
    Bella, G
    Bentvelsen, S
    Bethke, S
    Betts, S
    Biebel, O
    Biguzzi, A
    Bird, SD
    Blobel, V
    Bloodworth, IJ
    Bobinski, M
    Bock, P
    Böhme, J
    Boutemeur, M
    Braibant, S
    Bright-Thomas, P
    Brown, RM
    Burckhart, HJ
    Burgard, C
    Bürgin, R
    Capiluppi, P
    Carnegie, RK
    Carter, AA
    Carter, JR
    Chang, CY
    Charlton, DG
    Chrisman, D
    Ciocca, C
    Clarke, PEL
    Clay, E
    Cohen, I
    [J]. EUROPEAN PHYSICAL JOURNAL C, 1999, 7 (04): : 571 - 593
  • [2] On non perturbative corrections to the potential for heavy quarks
    Akhoury, R
    Zakharov, VI
    [J]. PHYSICS LETTERS B, 1998, 438 (1-2) : 165 - 172
  • [3] Badalian AM, 1996, PHYS ATOM NUCL+, V59, P2164
  • [4] Badalian AM, 1997, PHYS ATOM NUCL+, V60, P1003
  • [5] BADALIAN AM, HEPLAT9704004
  • [6] BADALIAN AM, 1993, YAD FIZ, V56, P239
  • [7] BADALIAN AM, 1999, YAD FIZ, V62, P1086
  • [8] BADALIAN AM, 1997, YAD FIZ, V60, P714
  • [9] BADALIAN AM, 1996, YAD FIZ, V59, P2247
  • [10] NONPERTURBATIVE CALCULATIONS OF HC AND HB MASSES
    BADALYAN, AM
    YUROV, VP
    [J]. PHYSICAL REVIEW D, 1990, 42 (09): : 3138 - 3141