Status of the lattice and τ decay determinations of α<SUB>s</SUB>

K. Maltman

doi:10.1088/1674-1137/34/9/040

Chinese Physics C> 2010, Vol. 34> Issue(9) : 1350-1354 DOI: 10.1088/1674-1137/34/9/040

Status of the lattice and τ decay determinations of α_s

K. Maltman ^,

York University, 4700 Keele St., Toronto, ON CANADA M3J 1P3

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Abstract：
The two highest precision determinations of α_s(M_Z²), that based on the analysis of short-distance-sensitive lattice observables, and that based on an analysis of hadronic τ decay data, have, until very recently, given results which are not in good agreement. I review new versions of these analyses which bring the two determinations into excellent agreement, and discuss prospects for additional future improvements.

References

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. Mason Q et al. Phys. Rev. Lett., 2005, 95: 0520022. Davier M et al. Eur. Phys. J. C, 2008, 56: 305-3223. Davies C T H et al (HPQCD collaboration). Phys. Rev. D,2008, 78: 1145074. Maltman K, Leinweber D, Moran P, Sternbeck A. Phys.Rev. D, 2008, 78: 1145045. Ioffe B L, Zyablyuk K N. Eur. Phys. J. C, 2003, 27: 229-241; Io e B L. Phys. Atom. Nucl., 2003, 66: 30-436. Schael S et al (ALEPH collaboration). Phys. Rep., 2005,421: 191-2847. Ackerstaff K et al (OPAL collaboration). Eur. Phys. J. C,1999, 7: 571-5938. Tsai Y-S. Phys. Rev. D, 1971, 4: 28219. Baikov P A, Chetyrkin K G, Kuhn J H. Phys. Rev. Lett.,2008, 101: 01200210. Cata O, Golterman M, Peris S. Phys. Rev. D, 2008, 77:093006; ibid., 2009, 79: 05300211. Jamin M, Beneke M. JHEP, 2008, 0809: 04412. Maltman K, Yavin T. Phys. Rev. D, 2008, 78: 094020;Nucl. Phys. Proc. Supp., 2009, 189: 66-7113. Narison S. Phys. Lett. B, 2009, 673: 30-3614. Menke S. arXiv:0904.179615. Maltman K, Yavin T. Nucl. Phys. B Proc. Suppl., 2009,189: 66-7116. Maltman K. Phys. Lett. B, 1998, 440: 367-374; Nucl.Phys. Proc. Suppl., 2003, 123: 149-166

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K. Maltman. Status of the lattice and τ decay determinations of α_s[J]. Chinese Physics C, 2010, 34(9): 1350-1354. doi: 10.1088/1674-1137/34/9/040

K. Maltman. Status of the lattice and τ decay determinations of α_s[J]. Chinese Physics C, 2010, 34(9): 1350-1354. doi: 10.1088/1674-1137/34/9/040 shu

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Received: 2010-02-08
Revised: 1900-01-01

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Status of the lattice and τ decay determinations of α_s

K. Maltman ^,

Corresponding author: K. Maltman,

York University, 4700 Keele St., Toronto, ON CANADA M3J 1P3

Received Date: 2010-02-08
Accepted Date: 1900-01-01
Available Online: 2010-09-05

Abstract:

The two highest precision determinations of α_s(M_Z²), that based on the analysis of short-distance-sensitive lattice observables, and that based on an analysis of hadronic τ decay data, have, until very recently, given results which are not in good agreement. I review new versions of these analyses which bring the two determinations into excellent agreement, and discuss prospects for additional future improvements.