ZEU-THEO

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2018-11-12
14:39
DBCoverage [PUBDB-2018-04425] Journal Article/Report/Contribution to a conference proceedings
; ; ; et al
The $\rho$ parameter at three loops and elliptic integrals
[DESY-18-117; DO-TH-18-15; arXiv:1807.05287]
Loops and Legs in Quantum Field Theory, St. GoarSt. Goar, Germany, 29 Apr 2018 - 4 May 20182018-04-292018-05-04 Proceedings of Science / International School for Advanced Studies (LL2018), 017 () [10.22323/1.303.0017]  GO
We describe the analytic calculation of the master integrals required to compute the two-mass three-loop corrections to the $\rho$ parameter. In particular, we present the calculation of the master integrals for which the corresponding differential equations do not factorize to first order. [...]
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2018-11-12
11:14
[PUBDB-2018-04386] Report/Contribution to a conference proceedings/Contribution to a book
; ; ; et al
Two-mass three-loop effects in deep-inelastic scattering
[DESY 18-119, DO-TH 18/16]
Proceedings of Loops and Legs in Quantum Field Theory — PoS(LL2018) - Sissa Medialab Trieste, Italy, 2018. - ISBN - doi:10.22323/1.303.0051
Loops and Legs in Quantum Field Theory, LL 2018, St. GoarSt. Goar, Germany, 29 Apr 2018 - 4 May 20182018-04-292018-05-04
Trieste, Italy : Sissa Medialab 051 pp. () [10.22323/1.303.0051]  GO
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2018-11-12
11:08
[PUBDB-2018-04383] Report/Contribution to a conference proceedings/Contribution to a book
; ; ; et al
Massive three loop form factor in the planar limit
[DESY 18–118, DO–TH 18/14]
Proceedings of Loops and Legs in Quantum Field Theory — PoS(LL2018) - Sissa Medialab Trieste, Italy, 2018. - ISBN - doi:10.22323/1.303.0009
Loops and Legs in Quantum Field Theory, LL2018, St. GoarSt. Goar, Germany, 29 Apr 2018 - 4 May 20182018-04-292018-05-04
Trieste, Italy : Sissa Medialab 009 pp. () [10.22323/1.303.0009]  GO
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2018-11-12
10:58
DBCoverage [PUBDB-2018-04382] Journal Article

Muon g – 2 theory: The hadronic part
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2018-11-12
10:54
[PUBDB-2018-04380] Report/Journal Article

The Muon $g-2$ in Progress
[arXiv:1804.07313]
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2018-11-05
09:32
OpenAccess [PUBDB-2018-04138] Preprint/Report
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Automated Solution of First Order Factorizable Systems of Differential Equations in One Variable
[DESY-18-053; DO-TH-18-09; TIF-UNIMI-2018-8; arXiv:1810.12261]
 GO
We present an algorithm which allows to solve analytically linear systems of differential equations which factorize to first order. The solution is given in terms of iterated integrals over an alphabet where its structure is implied by the coefficient matrix of the differential equations. [...]
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2018-10-29
11:06
OpenAccess [PUBDB-2018-03991] Report/Journal Article
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Critical behavior of the $\mathrm{QED_3}$-Gross-Neveu-Yukawa model at four loops
[DESY-18-107; HU-EP-18-20; arXiv:1808.00549]
We study the universal critical properties of the QED$_3$-Gross-Neveu-Yukawa model with N flavors of four-component Dirac fermions coupled to a real scalar order parameter at four-loop order in the ε expansion below four dimensions. For $N=1$, the model is conjectured to be infrared dual to the SU$(2)$-symmetric noncompact $\mathbb{C}P^1$ model, which describes the deconfined quantum critical point of the Néel-valence-bond-solid transition of spin-1/2 quantum antiferromagnets on the two-dimensional square lattice. [...]
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2018-10-29
09:02
OpenAccess [PUBDB-2018-03984] Preprint/Report
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The asymptotic behavior of the heavy quark form factors at higher order
[DESY-18-163; DO-TH-18-24; TIF-UNIMI-2018-7; arXiv:1810.08943]
 GO
In the asymptotic limit $Q^2 \gg m^2$, the heavy quark form factors exhibit Sudakov behavior. We study the corresponding renormalization group equations of the heavy quark form factors which do not only govern the structure of infrared divergences, but also control the high energy logarithms. [...]
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2018-10-15
13:31
OpenAccess [PUBDB-2018-03793] Preprint/Report
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MBnumerics: Numerical integration of Mellin-Barnes integrals in physical regions
[DESY-18-121; KW-18-008; arXiv:1810.04580]
 GO
We introduce techniques to treat numerically Mellin-Barnes integrals in physical regions, which arise in the need of the computation of Feynman integrals for the electroweak two-loop corrections to the pseudo observables at the Z-boson resonance..
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2018-10-01
12:13
OpenAccess [PUBDB-2018-03683] Preprint/Report

The Role of Mesons in Muon $g-2$
[arXiv:1809.07413; DESY-18-152; HU-EP-18-27]
 GO
The muon anomaly $a_\mu=(g_\mu-2)/2$ showing a persisting 3 to 4 $\sigma$ deviation between the SM prediction and the experiment is one of the most promising signals for physics beyond the SM. As is well known, the hadronic uncertainties are limiting the accuracy of the Standard Model prediction. [...]
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