TY  - JOUR
AU  - Abbate, R.
AU  - Fickinger, M.
AU  - Hoang, A. H.
AU  - Mateu, V.
AU  - Stewart, I. W.
PY  - 2012
DA  - 2012//
TI  - Precision thrust cumulant moments at N^3LL
T2  - Phys. Rev. D
JO  - Physical Review D
SP  - 094002
EP  - 22pp
VL  - 86
IS  - 9
PB  - Amer Physical Soc
AB  - We consider cumulant moments (cumulants) of the thrust distribution using predictions of the full spectrum for thrust including O(alpha(3)(s)) fixed order results, resummation of singular (NLL)-L-3 logarithmic contributions, and a class of leading power corrections in a renormalon-free scheme. From a global fit to the first thrust moment we extract the strong coupling and the leading power correction matrix element Omega(1). We obtain alpha(s)(m(Z)) = 0.1140 +/- (0.0004)(exp) +/- (0.0013)(hadr) +/- (0.0007)(pert), where the 1-sigma uncertainties are experimental, from hadronization (related to Omega(1)) and perturbative, respectively, and Omega(1) = 0.377 +/- (0.044)(exp) +/- (0.039)(pert) GeV. The nth thrust cumulants for n >= 2 are completely insensitive to Omega(1), and therefore a good instrument for extracting information on higher order power corrections, Omega'(n)/Q(n), from moment data. We find ((Omega) over tilde '2)(1/2) = 0.74 +/- (0.11)(exp) +/- (0.09)(pert) GeV.
SN  - 1550-7998
UR  - http://arxiv.org/abs/arXiv:1204.5746
UR  - https://doi.org/10.1103/PhysRevD.86.094002
DO  - 10.1103/PhysRevD.86.094002
LA  - English
N1  - WOS:000310500500005
ID  - Abbate_etal2012
ER  -