TY  - JOUR
AU  - Pich, A.
AU  - Rodriguez-Sanchez, A.
PY  - 2016
DA  - 2016//
TI  - Updated determination of alpha(s)(m(tau)(2)) from tau decays
T2  - Mod. Phys. Lett. A
JO  - Modern Physics Letters A
SP  - 1630032 - 15pp
VL  - 31
IS  - 30
PB  - World Scientific Publ Co Pte Ltd
KW  - QCD
KW  - strong coupling
KW  - tau decays
AB  - Using the most recent release of the ALEPH tau decay data, we present a very detailed phenomenological update of the alpha(s)(m(tau)(2)) determination. We have exploited the sensitivity to the strong coupling in many different ways, exploring several complementary methodologies. All determinations turn out to be in excellent agreement, allowing us to extract a very reliable value of the strong coupling. We find alpha((nf =3))(s)(m(tau)(2)) = 0.328 +/- 0.012 which implies alpha((nf=5))(s)(M-Z(2)) = 0.1197 +/- 0.0014. We critically revise previous work, and point out the problems flawing some recent analyses which claim slightly smaller values.
SN  - 0217-7323
UR  - http://arxiv.org/abs/1606.07764
UR  - https://doi.org/10.1142/S0217732316300329
DO  - 10.1142/S0217732316300329
LA  - English
N1  - WOS:000383788500002
ID  - Pich+Rodriguez-Sanchez2016
ER  -