20190620 13:20 
[PUBDB201902521]
Preprint/Report
Dubovyk, I. ; Freitas, A. ; Gluza, J. ; et al
Chapter B: Theory status of Zboson physics
[DESY18122]
OpenAccess: PDF PDF (PDFA);
Detailed record  Similar records

20190618 10:35 
[PUBDB201902490]
Preprint/Report
Ablinger, J. ; Blümlein, J. ; Marquard, P. ; et al
Three loop heavy quark form factors and their asymptotic behavior
[DESY19096, DOTH 19/09, SAGEX201913]
A summary of the calculation of the colorplanar and complete light quark contributions to the massive threeloop form factors is presented. Here a novel calculation method for the Feynman integrals is used, solving general univariate first order factorizable systems of differential equations. [...]
OpenAccess: PDF PDF (PDFA);
Detailed record  Similar records

20190617 14:58 
[PUBDB201902485]
Journal Article
Ablinger, J. ; Blümlein, J. ; Round, M. ; et al
Numerical implementation of harmonic polylogarithms to weight w = 8
We present the FORTRANcode HPOLY.f for the numerical calculation of harmonic polylogarithms up to w = 8 at an absolute accuracy of $\sim 10^{15}$ or better. Using algebraic and argument relations the numerical representation can be limited to the range $x \epsilon [0,\sqrt{2}  {1}]$ . [...]
ddc:530
Detailed record  Similar records

20190617 14:51 
[PUBDB201902484]
Journal Article
Blümlein, J. ; De Freitas, A. ; Raab, C. G. ; et al
The unpolarized twoloop massive pure singlet Wilson coefficients for deepinelastic scattering
We calculate the massive two–loop pure singlet Wilson coefficients for heavy quark production in the unpolarized case analytically in the whole kinematic region and derive the threshold and asymptotic expansions. We also recalculate the corresponding massless two–loop Wilson coefficients. [...]
OpenAccess: PDF PDF (PDFA);
ddc:530
Detailed record  Similar records

20190514 14:08 
[PUBDB201902271]
Report/Journal Article
Andersen, J. R. ; Cockburn, J. D. ; Heil, M. ; et al
Finite quarkmass effects in Higgs boson production with dijets at large energies
[arXiv:1812.08072; DESY18217; DCPT/18/204; IPPP/18/102; MCnet1833]
The production of a Higgs boson in association with at least two jets receives contributions both from the fusion of weak vector bosons (VBF) and from QCD processes, especially gluon fusion (GF). The former process is important for measuring the coupling of the Higgs boson to weak bosons, whereas the latter process plays an important role in determining any CPadmixtures in the Higgs sector [...]
OpenAccess: PDF PDF (PDFA);
ddc:530
Detailed record  Similar records

20190513 14:27 
[PUBDB201902238]
Preprint/Report
Ablinger, J. ; Blümlein, J. ; Marquard, P. ; et al
Three loop QCD corrections to heavy quark form factors
[DESY19078; DOTH 19/06; arXiv:1905.03728]
Higher order calculations in perturbative Quantum Field Theories often produce coupled linear systems of differential equations which factorize to first order. Here we present an algorithm to solve such systems in terms of iterated integrals over an alphabet the structure of which is implied by the coefficient matrix of the given system. [...]
OpenAccess: PDF PDF (PDFA);
Detailed record  Similar records

20190508 16:48 
[PUBDB201902222]
Book
Blümlein, J. ; Schneider, C. ; Paule, P.
Elliptic integrals, elliptic functions and modular forms in quantum field theory
2019KMPB Conference : Elliptic Integrals, Elliptic Functions and Modular Forms in Quantum Field Theory, ZeuthenZeuthen, Germany, 23 Oct 2017  26 Oct 20172017102320171026 Contributions / Info
Cham : Springer, Texts & monographs in symbolic computation 509 pages (2019) [10.1007/9783030044800]2019
This book includes review articles in the field of elliptic integrals, elliptic functions and modular forms intending to foster the discussion between theoretical physicists working on higher loop calculations and mathematicians working in the field of modular forms and functions and analytic solutions of higher order differential and difference equations..
HH
Konf.
2017
Zeuthen
1 available
ZEU
Konf.
2017
Zeuthen
1 available
Detailed record  Similar records

20190507 16:57 
[PUBDB201902177]
Preprint/Report
Blümlein, J.
Large scale analytic calculations in quantum field theories
[DESY18216; DOTH 18/28; arXiv:1905.02148]
We present a survey on the mathematical structure of zero and single scale quantities and the associated calculation methods and function spaces in higher order perturbative calculations in relativistic renormalizable quantum field theories..
OpenAccess: PDF PDF (PDFA);
Detailed record  Similar records

20190401 10:15 
[PUBDB201901787]
Preprint/Report
Blümlein, J. ; De Freitas, A. ; Raab, C. G. ; et al
The unpolarized twoloop massive pure singlet Wilson coefficients for deepinelastic scattering
[arXiv:1903.06155; DESY19038; DOTH18/25]
We calculate the massive twoloop pure singlet Wilson coefficients for heavy quark production in the unpolarized case analytically in the whole kinematic region and derive the threshold and asymptotic expansions. We also recalculate the corresponding massless twoloop Wilson coefficients. [...]
OpenAccess: PDF PDF (PDFA);
Detailed record  Similar records

20190318 11:32 
[PUBDB201901570]
Report/Journal Article
Phan, K. H. ; Riemann, T.
Scalar 1loop Feynman integrals as meromorphic functions in spacetime dimension d
[DESY17079; HCMUS1901; KW18004; arXiv:1812.10975]
The longstanding problem of representing the general massive oneloop Feynman integral as a meromorphic function of the spacetime dimension d has been solved for the basis of scalar one to fourpoint functions with indices one. In 2003 the solution of difference equations in the spacetime dimension allowed to determine the necessary classes of special functions: selfenergies need ordinary logarithms and Gauss hypergeometric functions $_{2}F_1$, vertices need additionally Kampé de FérietAppell functions $F_1$, and box integrals also LauricellaSaran functions $F_S$. [...]
OpenAccess: PDF PDF (PDFA);
ddc:530
Detailed record  Similar records


