Order QCD Corrections to and Decays
PA Baikov, KG Chetyrkin, JH Kühn - Physical review letters, 2008 - APS
Using recently developed methods for the evaluation of five-loop amplitudes in perturbative
QCD, corrections of order α s 4 for the nonsinglet part of the cross section for electron …
QCD, corrections of order α s 4 for the nonsinglet part of the cross section for electron …
Determining the strange quark mass in Cabibbo-suppressed τ lepton decays
KG Chetyrkin, JH Kühn, AA Pivovarov - Nuclear Physics B, 1998 - Elsevier
In this work radiative corrections in the total hadronic decay rate of the τ lepton and some
moments of its differential distributions are studied employing perturbative QCD and the …
moments of its differential distributions are studied employing perturbative QCD and the …
Determination of the strange quark mass from Cabibbo-suppressed tau decays with resummed perturbation theory in an effective scheme
JG Körner, F Krajewski, AA Pivovarov - The European Physical Journal C …, 2001 - Springer
We present an analysis of the m_s^2-corrections to Cabibbo-suppressed τ-lepton decays
employing contour improved resummation within an effective scheme which is an essential …
employing contour improved resummation within an effective scheme which is an essential …
Bilocal expansion of the Borel amplitude and the hadronic tau decay width
G Cvetič, T Lee - Physical Review D, 2001 - APS
The singular part of the Borel transform of a QCD amplitude near the infrared renormalon
can be expanded in terms of higher order Wilson coefficients of the operators associated …
can be expanded in terms of higher order Wilson coefficients of the operators associated …
Towards order accuracy in decays
PA Baikov, KG Chetyrkin, JH Kühn - Physical Review D, 2003 - APS
Recently computed terms of order O (α s 4 nf 2) in the perturbative series for the τ decay rate,
and similar (new) strange quark mass corrections, are used to discuss the validity of various …
and similar (new) strange quark mass corrections, are used to discuss the validity of various …
Hadronic Z-and tau-Decays in Order alpha_s^ 4
PA Baikov, KG Chetyrkin, JH Kühn - arXiv preprint arXiv:0801.1821, 2008 - arxiv.org
Using recently developed methods for the evaluation of five-loop amplitudes in perturbative
QCD, corrections of order alpha_s^ 4 for the cross section of electron-positron annihilation …
QCD, corrections of order alpha_s^ 4 for the cross section of electron-positron annihilation …
Running electromagnetic-coupling constant: Low-energy normalization and the value at MZ
AA Pivovarov - Physics of Atomic Nuclei, 2002 - Springer
A numerical value for the running electromagnetic-coupling constant in the MS scheme is
calculated at a low-energy normalization scale equal to the τ-lepton mass M τ. This low …
calculated at a low-energy normalization scale equal to the τ-lepton mass M τ. This low …
Strong coupling constant from τ decay within a renormalization scheme invariant treatment
JG Körner, F Krajewski, AA Pivovarov - Physical Review D, 2000 - APS
We extract a numerical value for the strong coupling constant α s from the τ-lepton decay
rate into nonstrange particles. A new feature of our procedure is the explicit use of …
rate into nonstrange particles. A new feature of our procedure is the explicit use of …
Optimal renormalization and the extraction of the strange quark mass from moments of the -decay spectral function
B Ananthanarayan, D Das - Physical Review D, 2016 - APS
We introduce an optimal renormalization group analysis pertinent to the analysis of
polarization functions associated with the s-quark mass relevant in τ-decay. The technique is …
polarization functions associated with the s-quark mass relevant in τ-decay. The technique is …
Resummation of the hadronic tau decay width with the modified Borel transform method
A modified Borel transform of the Adler function is used to resum the hadronic tau decay
width ratio. In contrast with the ordinary Borel transform, the integrand of the Borel integral is …
width ratio. In contrast with the ordinary Borel transform, the integrand of the Borel integral is …