Results 51 to 60 of about 138 (86)

The three-loop Adler D-function for N = 1 $$ \mathcal{N}=1 $$ SQCD regularized by dimensional reduction

Journal of High Energy Physics, 2019
The three-loop Adler D-function for N = 1 $$ \mathcal{N}=1 $$ SQCD in the D R ¯ $$ \overline{\mathrm{DR}} $$ scheme is calculated starting from the three-loop result recently obtained with the higher covariant derivative regularization. For this purpose,
S. S. Aleshin, A. L. Kataev, K. V. Stepanyantz   +2 more
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Two-loop renormalization of the Faddeev-Popov ghosts in N=1 $$ \mathcal{N}=1 $$ supersymmetric gauge theories regularized by higher derivatives

Journal of High Energy Physics, 2018
For the general renormalizable N=1 $$ \mathcal{N}=1 $$ supersymmetric gauge theory we investigate renormalization of the Faddeev-Popov ghosts using the higher covariant derivative regularization. First, we find the two-loop anomalous dimension defined in
A. E. Kazantsev, M. D. Kuzmichev, N. P. Meshcheriakov, S. V. Novgorodtsev, I. E. Shirokov, M. B. Skoptsov, K. V. Stepanyantz   +6 more
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Toward massless and massive event shapes in the large-β 0 limit

Journal of High Energy Physics, 2021
We present results for SCET and bHQET matching coefficients and jet functions in the large-β 0 limit. Our computations exactly predict all terms of the form α s n + 1 n f n $$ {\alpha}_s^{n+1}{n}_f^n $$ for any n ≥ 0, and we find full agreement with the ...
N. G. Gracia, V. Mateu
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Renormalization group properties in the conformal sector: towards perturbatively renormalizable quantum gravity

Journal of High Energy Physics, 2018
The Wilsonian renormalization group (RG) requires Euclidean signature. The conformal factor of the metric then has a wrong-sign kinetic term, which has a profound effect on its RG properties.
Tim R. Morris
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Bion non-perturbative contributions versus infrared renormalons in two-dimensional ℂP N − 1 models

Journal of High Energy Physics, 2019
We derive the semiclassical contributions from the real and complex bions in the two-dimensional ℂP N − 1 sigma model on ℝ×S 1 with a twisted boundary condition. The bion configurations are saddle points of the complexified Euclidean action, which can be
Toshiaki Fujimori, Syo Kamata, Tatsuhiro Misumi, Muneto Nitta, Norisuke Sakai   +4 more
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Hyperasymptotic approximation to the plaquette and determination of the gluon condensate

Journal of High Energy Physics, 2020
We give the hyperasymptotic expansion of the plaquette with a precision that includes the terminant associated to the leading renormalon. Subleading effects are also considered.
Cesar Ayala, Xabier Lobregat, Antonio Pineda   +2 more
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Factorization at subleading power and endpoint-divergent convolutions in h → γγ decay

Journal of High Energy Physics, 2020
It is by now well known that, at subleading power in scale ratios, factorization theorems for high-energy cross sections and decay amplitudes contain endpoint-divergent convolution integrals.
Ze Long Liu, Matthias Neubert
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Testing the Bethe ansatz with large N renormalons. [PDF]

Eur Phys J Spec Top, 2021
Mariño M, Miravitllas R, Reis T.
europepmc   +1 more source

Field theoretic renormalization study of interaction corrections to the universal ac conductivity of graphene

Journal of High Energy Physics, 2018
The two-loop interaction correction coefficient to the universal ac conductivity of disorder-free intrinsic graphene is computed with the help of a field theoretic renormalization study using the Bogoliubov-Parasiuk-Hepp-Zimmermann prescription.
S. Teber, A. V. Kotikov
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On the difference between FOPT and CIPT for hadronic tau decays. [PDF]

Eur Phys J Spec Top, 2021
Hoang AH, Regner C.
europepmc   +1 more source