Zobrazeno 1 - 10
of 426
pro vyhledávání: '"Falcioni, G"'
We have computed the even-N moments N =< 20 of the gluon-gluon splitting function P_{gg} at the fourth order of perturbative QCD via the renormalization of off-shell operator matrix elements. Our results, derived analytically for a general compact si
Externí odkaz:
http://arxiv.org/abs/2410.08089
Parton evolution equations in QCD are controlled by the anomalous dimensions of gauge-invariant twist-two spin-$N$ quark and gluon operators. Under renormalization, these mix with gauge-variant operators of the same quantum numbers, referred to as al
Externí odkaz:
http://arxiv.org/abs/2409.02870
We present the even-N moments N =< 20 of the fourth-order (N^3LO) contribution P_{gq}^(3)(x) to the quark-to-gluon splitting function in perturbative QCD. These moments, obtained by analytically computing off-shell operator matrix elements for a gene
Externí odkaz:
http://arxiv.org/abs/2404.09701
We have computed the first 30 even-N moments for the double fermionic (nf^2) part of the quark-to-gluon splitting function P_{gq} at the fourth order of perturbative QCD via the renormalization of off-shell operator matrix elements. From these result
Externí odkaz:
http://arxiv.org/abs/2310.01245
Publikováno v:
Phys.Lett.B 846 (2023) 138215
We have computed the even-$N$ moments $N \leq 20$ of the gluon-to-quark splitting function $P_{\rm qg}$ at the fourth order of perturbative QCD via the renormalization of off-shell operator matrix elements. Our results, derived analytically for a gen
Externí odkaz:
http://arxiv.org/abs/2307.04158
We have computed the even-$N$ moments $N\leq 20$ of the pure-singlet quark splitting function $P_{\,\rm ps}$ at the fourth order of perturbative QCD via the anomalous dimensions of off-shell flavour-singlet operator matrix elements. Our results, deri
Externí odkaz:
http://arxiv.org/abs/2302.07593
The global R* operation is a powerful method for computing renormalisation group functions. This technique, based on the principle of infrared rearrangement, allows to express all the ultraviolet counterterms in terms of massless propagator integrals
Externí odkaz:
http://arxiv.org/abs/1801.03024
Autor:
Ablinger, J., Behring, A., Blümlein, J., Falcioni, G., De Freitas, A., Marquard, P., Rana, N., Schneider, C.
Publikováno v:
Phys. Rev. D 97, 094022 (2018)
We compute the two-loop QCD corrections to the heavy quark form factors in case of the vector, axial-vector, scalar and pseudo-scalar currents up to second order in the dimensional parameter $\epsilon = (4-D)/2$. These terms are required in the renor
Externí odkaz:
http://arxiv.org/abs/1712.09889
Autor:
Ablinger, J., Behring, A., Blümlein, J., Falcioni, G., De Freitas, A., Marquard, P., Rana, N., Schneider, C.
We present the results for heavy quark form factors at two-loop order in perturbative QCD for different currents, namely vector, axial-vector, scalar and pseudo-scalar currents, up to second order in the dimensional regularization parameter. We outli
Externí odkaz:
http://arxiv.org/abs/1711.04880
Publikováno v:
JHEP 1710 (2017) 179
We present the complete set of vertex, wave function and charge renormalisation constants in QCD in a general simple gauge group and with the complete dependence on the covariant gauge parameter $\xi$ in the minimal subtraction scheme of conventional
Externí odkaz:
http://arxiv.org/abs/1709.08541