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pro vyhledávání: '"P.A. Baikov"'
Autor:
P.A. Baikov, K.G. Chetyrkin
Publikováno v:
Journal of High Energy Physics, Vol 2019, Iss 10, Pp 1-18 (2019)
Abstract We give a short account of recent advances in our understanding of the π- dependent terms in massless (Euclidean) 2-point functions as well as in generic anomalous dimensions (ADs) and β-functions. We extend the considerations of [1] by tw
Externí odkaz:
https://doaj.org/article/910780594382440d9e2b3eb948fd89f3
Publikováno v:
Journal of High Energy Physics, Vol 2017, Iss 4, Pp 1-15 (2017)
Abstract We extend the O α s 5 $$ \mathcal{O}\left({\alpha}_s^5\right) $$ result of the analytic calculation of the quark mass anomalous dimension in pQCD [1] to the case of a generic gauge group. We present explicit formulas which express the relev
Externí odkaz:
https://doaj.org/article/e18f9cca6247409ebabc9f82fb4f285f
Akademický článek
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Autor:
P.A. Baikov, K. G. Chetyrkin
Publikováno v:
Journal of High Energy Physics, Vol 2018, Iss 6, Pp 1-25 (2018)
Journal of High Energy Physics
Journal of High Energy Physics
Extending an argument of [Baikov:2010hf] for the case of 5-loop massless propagators we prove a host of new exact model-independent relations between contributions proportional to odd and even zetas in generic \MSbar\ anomalous dimensions as well as
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::16da6224a9717f4aa39a5173e84998f7
http://link.springer.com/article/10.1007/JHEP06(2018)141
http://link.springer.com/article/10.1007/JHEP06(2018)141
Publikováno v:
Journal of High Energy Physics, Vol 2017, Iss 4, Pp 1-15 (2017)
Journal of High Energy Physics
Journal of high energy physics, 119, Art. Nr. 119
Journal of High Energy Physics
Journal of high energy physics, 119, Art. Nr. 119
We extend the ${\cal O}(\alpha_s^5)$ result of the analytic calculation of the quark mass anomalous dimension in pQCD [1] to the case of a generic gauge group. We present explicit formulas which express the relevant renormalization constants in terms
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::97c77ba8e775f8fac31177fd5038d165
http://link.springer.com/article/10.1007/JHEP04(2017)119
http://link.springer.com/article/10.1007/JHEP04(2017)119
Publikováno v:
Proceedings of alphas-2019: Workshop on precision measurements of the QCD coupling constant — PoS(ALPHAS2019).
The Higgs-boson decay rates into $bb$ and into $gg$ have been evaluated in N4LO, corresponding to order $α4s$ for $bb$ and order $α6s$ for $gg$ final states. After inclusion of the four-loop term, nice stabilization of the series is observed. In a
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::c77b50765edd58a9f791297324ba95c9
https://doi.org/10.22323/1.365.0007
https://doi.org/10.22323/1.365.0007
Autor:
K.G. Chetyrkin, P.A. Baikov
Publikováno v:
Proceedings of Loops and Legs in Quantum Field Theory — PoS(LL2018).
We provide the reader with a (very) short review of recent advances in our understanding of the $\pi$-dependent terms in massless (Euclidean) 2-point functions as well as in generic anomalous dimensions and $\beta$-functions. We extend the considerat
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::e79a0be5c94489e06435aedded29e222
https://doi.org/10.22323/1.303.0008
https://doi.org/10.22323/1.303.0008
Autor:
P.A. Baikov, K.G. Chetyrkin
Publikováno v:
Proceedings of 13th International Symposium on Radiative Corrections (Applications of Quantum Field Theory to Phenomenology) — PoS(RADCOR2017).
We report about analytic calculation of the five-loop contribution to theanomalous dimension of the QCD vacuum energy. The result completes recent series of works [1-7] devoted to the renormalization of QCD at the five-loop level.
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::b7c5fa9b7a731d56bb4c6b692a7ac53e
https://doi.org/10.22323/1.290.0025
https://doi.org/10.22323/1.290.0025
Recent developments in perturbative QCD, leading to the beta function in five-loop approximation are presented. In a first step the two most important decay modes of the Higgs boson are discussed: decays into a pair of gluons and, alternatively, deca
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::b34b4eb474763ddb807adbc5c098bb37
http://arxiv.org/abs/1711.05592
http://arxiv.org/abs/1711.05592
We analytically compute the five-loop term in the beta function which governs the running of $\alpha_s$ --- the quark-gluon coupling constant in QCD. The new term leads to a reduction of the theory uncertainty in $\alpha_s$ taken at the Z-boson scale
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::d3cbd826807ef1461185de5032417764
http://arxiv.org/abs/1606.08659
http://arxiv.org/abs/1606.08659