Results 21 to 30 of about 2,451 (241)

Mechanics of infinitesimal gyroscopes on helicoid-catenoid deformation family of minimal surfaces [PDF]

open access: yesBulletin of the Polish Academy of Sciences: Technical Sciences, 2021
In this paper we explore the mechanics of infinitesimal gyroscopes (test bodies with internal degrees of freedom) moving on an arbitrary member of the helicoid-catenoid family of minimal surfaces.
Vasyl Kovalchuk   +2 more
doaj   +1 more source

Two-loop integrals for CP-even heavy quarkonium production and decays: elliptic sectors

open access: yesJournal of High Energy Physics, 2018
By employing the differential equations, we compute analytically the elliptic sectors of two-loop master integrals appearing in the NNLO QCD corrections to CP-even\ heavy quarkonium exclusive production and decays, which turns out to be the last and ...
Long-Bin Chen, Jun Jiang, Cong-Feng Qiao
doaj   +1 more source

One-loop open-string integrals from differential equations: all-order α′-expansions at n points

open access: yesJournal of High Energy Physics, 2020
We study generating functions of moduli-space integrals at genus one that are expected to form a basis for massless n-point one-loop amplitudes of open superstrings and open bosonic strings.
Carlos R. Mafra, Oliver Schlotterer
doaj   +1 more source

Yangian Ward identities for fishnet four-point integrals

open access: yesJournal of High Energy Physics, 2022
We derive and study Yangian Ward identities for the infinite class of four-point ladder integrals and their Basso-Dixon generalisations. These symmetry equations follow from interpreting the respective Feynman integrals as correlation functions in the ...
Luke Corcoran   +2 more
doaj   +1 more source

Inequalities of Some Trigonometric Functions [PDF]

open access: yes, 2003
By using two identities and two inequalities relating to Bernoulli’s and Euler’s numbers and power series expansions of cotangent function, secant function, cosecant function and logarithms of functions involving sine function, cosine function and ...
Qi, Feng, Chen, Chao-Ping
core   +6 more sources

All orders structure and efficient computation of linearly reducible elliptic Feynman integrals

open access: yesJournal of High Energy Physics, 2019
We define linearly reducible elliptic Feynman integrals, and we show that they can be algorithmically solved up to arbitrary order of the dimensional regulator in terms of a 1-dimensional integral over a polylogarithmic integrand, which we call the inner
Martijn Hidding, Francesco Moriello
doaj   +1 more source

Open-string integrals with multiple unintegrated punctures at genus one

open access: yesJournal of High Energy Physics, 2022
We study integrals appearing in intermediate steps of one-loop open-string amplitudes, with multiple unintegrated punctures on the A-cycle of a torus. We construct a vector of such integrals which closes after taking a total differential with respect to ...
André Kaderli, Carlos Rodriguez
doaj   +1 more source

Numerical Evaluation of Elliptic Functions, Elliptic Integrals and Modular Forms [PDF]

open access: yes, 2019
International audienceWe describe algorithms to compute elliptic functions and their relatives (Jacobi theta functions, modular forms, elliptic integrals, and the arithmetic-geometric mean) numerically to arbitrary precision with rigorous error bounds ...
Johansson, Fredrik
core   +2 more sources

Three-loop contributions to the ρ parameter and iterated integrals of modular forms

open access: yesJournal of High Energy Physics, 2020
We compute fully analytic results for the three-loop diagrams involving two different massive quark flavours contributing to the ρ parameter in the Standard Model.
Samuel Abreu   +3 more
doaj   +1 more source

On-shell Z boson production at hadron colliders through 𝒪(αα s )

open access: yesJournal of High Energy Physics, 2022
The analytical expressions of the mixed QCD-EW corrections to on-shell Z boson inclusive production cross section at hadron colliders are presented, together with computational details.
Roberto Bonciani   +3 more
doaj   +1 more source

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