On the flavour dependence of the $\mathcal{O}(α_s^4)$ correction to the relation between running and pole heavy quark masses

Kataev, A. L.; Molokoedov, V. S.

doi:10.48550/arxiv.1511.06898

Cited by 7 publications

(30 citation statements)

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“…In our work of [7] we raised the question on the reason of the coincidence of the numerical errors in the presented in [3] results of the numerical calculations of the O(a 4 s ) corrections to the relations between running and pole heavy masses of c, b and t-quarks (see Eq. (21).…”

Section: Discussion Of the Theoretical Errorsmentioning

confidence: 98%

“…(21). The proposed in [7] explanation of the flavour-independence of the numerical error is that this error corresponds to the uncertainty of the n l -independent contribution to (18), namely of the coefficient z (40) m . If this explanation is correct, then the error of the numerical calculations of the coefficient z (41) m should be negligibly small.…”

Section: Discussion Of the Theoretical Errorsmentioning

confidence: 99%

“…Using the same computer code one of the authors of [6] improved recently the numerical precision of the second term in (7), which now reads 1 :…”

Section: The Static Potential In Perturbative Qcdmentioning

confidence: 99%

“…m at fixed n l were calculated in [3] with the help of computer program FIESTA, created in [17], [18]. The obtained in [3] results read: They were recently used by us in [7] to get the numerical expressions for the analytically unknown terms z…”

Section: The Four-loop Relation Between Ms Running and Pole Heavy Qua...mentioning

confidence: 99%

“…Special attention is paid to the discussions of theoretical errors in the existing numerical calculations of the O(α 4 s ) contributions to the static potential [4], [5], [6] and to the ratio of the running and pole heavy quark masses [3]. The determination of the dependence of the this QCD correction on the number of lighter quarks flavours n l by means of the ordinary least squares (OLS) mathematical method [7] is described.…”

Section: Introductionmentioning

confidence: 99%

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From perturbative calculations of the QCD static potential towards four-loop pole-running heavy quarks masses relation

Kataev

Molokoedov

2016

J. Phys.: Conf. Ser.

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The summary of the available semi-analytical results for the three-loop corrections to the QCD static potential and for the O(α 4 s ) contributions to the ratio of the running and pole heavy quark masses are presented. The procedure of the determination of the dependence of the four-loop contribution to the pole-running heavy quarks mass ratio on the number of quarks flavours, based on application of the least squares method is described. The necessity of clarifying the reason of discrepancy between the numerical uncertainties of the α 4 s coefficients in the mass ratio, obtained by this mathematical method by the direct numerical calculations is emphasised.

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Section: Discussion Of the Theoretical Errorsmentioning

confidence: 98%

Section: Discussion Of the Theoretical Errorsmentioning

confidence: 99%

“…Using the same computer code one of the authors of [6] improved recently the numerical precision of the second term in (7), which now reads 1 :…”

Section: The Static Potential In Perturbative Qcdmentioning

confidence: 99%

Section: The Four-loop Relation Between Ms Running and Pole Heavy Qua...mentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

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From perturbative calculations of the QCD static potential towards four-loop pole-running heavy quarks masses relation

Kataev

Molokoedov

2016

J. Phys.: Conf. Ser.

Self Cite

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Top-Yukawa contributions to bbH production at the LHC

Deutschmann

Maltoni

Wiesemann

et al. 2019

J. High Energ. Phys.

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We study the production of a Higgs boson in association with bottom quarks (bbH) in hadronic collisions at the LHC, including the different contributions stemming from terms proportional to the top-quark Yukawa coupling (y 2 t ), to the bottom-quark one (y 2 b ), and to their interference (y b y t ). Our results are accurate to next-to-leading order in QCD, employ the four-flavour scheme and the (Born-improved) heavy-top quark approximation. We find that next-to-leading order corrections to the y 2 t component are sizable, making it the dominant production mechanism for associated bbH production in the Standard Model and increasing its inclusive rate by almost a factor of two. By studying final-state distributions of the various contributions, we identify observables and selection cuts that can be used to select the various components and to improve the experimental sensitivity of bbH production on the bottom-quark Yukawa coupling.

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Electroweak precision tests of the Standard Model after the discovery of the Higgs boson

Erler

Schott

2019

Progress in Particle and Nuclear Physics

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The global fit of the Standard Model predictions to electroweak precision data, which has been routinely performed in the past decades by several groups, led to the prediction of the top quark and the Higgs boson masses before their respective discoveries. With the measurement of the Higgs boson mass at the Large Hadron Collider (LHC) in 2012 by the ATLAS and CMS collaborations, the last free parameter of the Standard Model of particle physics has been fixed, and the global electroweak fit can be used to test the full internal consistency of the electroweak sector of the Standard Model and constrain models beyond. In this article, we review the current state-of-the-art theoretical calculations, as well as the precision measurements performed at the LHC, and interpret them within the context of the global electroweak fit. Special focus is drawn in the impact of the Higgs boson mass on the fit.

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On the flavour dependence of the $\mathcal{O}(α_s^4)$ correction to the relation between running and pole heavy quark masses

Cited by 7 publications

References 0 publications

From perturbative calculations of the QCD static potential towards four-loop pole-running heavy quarks masses relation

From perturbative calculations of the QCD static potential towards four-loop pole-running heavy quarks masses relation

Top-Yukawa contributions to bbH production at the LHC

Electroweak precision tests of the Standard Model after the discovery of the Higgs boson

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