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The strong coupling from ALEPH tau decays

Rodríguez Sánchez, Antonio LU (2017) In Nuclear and Particle Physics Proceedings 287-288. p.81-84
Abstract

We analyze some of the different determinations of αs(mτ 2) that can be found in the literature and the numerical impact of their possible weaknesses with the publicly available non-strange spectral function from ALEPH tau decays. We also introduce some novel approaches. We find very stable results and uncertainties dominated by the perturbative part. Our final value is αs(mτ 2)=0.328±0.013.

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author
publishing date
type
Contribution to journal
publication status
published
subject
keywords
QCD, Strong Coupling, Tau Decays
in
Nuclear and Particle Physics Proceedings
volume
287-288
pages
4 pages
publisher
Elsevier
external identifiers
  • scopus:85020930191
ISSN
2405-6014
DOI
10.1016/j.nuclphysbps.2017.03.049
language
English
LU publication?
no
id
4a72acff-b5a1-4df0-b26c-c69060d1c86c
date added to LUP
2019-05-14 13:57:13
date last changed
2020-01-13 01:46:22
@article{4a72acff-b5a1-4df0-b26c-c69060d1c86c,
  abstract     = {<p>We analyze some of the different determinations of α<sub>s</sub>(m<sub>τ</sub> <sup>2</sup>) that can be found in the literature and the numerical impact of their possible weaknesses with the publicly available non-strange spectral function from ALEPH tau decays. We also introduce some novel approaches. We find very stable results and uncertainties dominated by the perturbative part. Our final value is α<sub>s</sub>(m<sub>τ</sub> <sup>2</sup>)=0.328±0.013.</p>},
  author       = {Rodríguez Sánchez, Antonio},
  issn         = {2405-6014},
  language     = {eng},
  month        = {06},
  pages        = {81--84},
  publisher    = {Elsevier},
  series       = {Nuclear and Particle Physics Proceedings},
  title        = {The strong coupling from ALEPH tau decays},
  url          = {http://dx.doi.org/10.1016/j.nuclphysbps.2017.03.049},
  doi          = {10.1016/j.nuclphysbps.2017.03.049},
  volume       = {287-288},
  year         = {2017},
}