Alphaₛ Determination from Tau Decays: Theoretical Status
Pich, Antonio
Original · EN
The total tau hadronic width can be accurately calculated using analyticity and the operator product expansion. The result turns out to be very sensitive to the value of alphaₛ(mₜau²), providing a precise determination of the strong coupling constant. The theoretical description of this observable is updated, including the recently computed O(alphaₛ⁴) contributions. The experimental determination of alphaₛ(mₜau²) and its actual uncertainties are discussed.
English translation
This paper has no Arabic translation yet. Be the first: it takes a few seconds, and the result is stored for every future reader.