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The strong coupling from ALEPH tau decays

Rodríguez Sánchez, Antonio LU (2017) In Nuclear and Particle Physics Proceedings 282-284. p.144-148
Abstract

The strong coupling from ALEPH tau decays. We use the publically available non-strange spectral function from ALEPH tau decays to critically analyze the different determinations of αs(mτ2) that can be found in the literature and the numerical impact of their possible weaknesses. We also introduce some novel approaches. We find that perturbative uncertainties dominate. Our results with different approaches are very stable. Our final value is αs(mτ2)=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
282-284
pages
5 pages
publisher
Elsevier
external identifiers
  • scopus:85016321112
ISSN
2405-6014
DOI
10.1016/j.nuclphysbps.2016.12.027
language
English
LU publication?
no
id
8c943d64-5dbd-4b11-9f65-794c067c7fe2
date added to LUP
2019-05-14 14:00:18
date last changed
2019-08-01 10:48:43
@article{8c943d64-5dbd-4b11-9f65-794c067c7fe2,
  abstract     = {<p>The strong coupling from ALEPH tau decays. We use the publically available non-strange spectral function from ALEPH tau decays to critically analyze 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. We also introduce some novel approaches. We find that perturbative uncertainties dominate. Our results with different approaches are very stable. 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        = {01},
  pages        = {144--148},
  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.2016.12.027},
  doi          = {10.1016/j.nuclphysbps.2016.12.027},
  volume       = {282-284},
  year         = {2017},
}