Zobrazeno 1 - 10
of 2 549
pro vyhledávání: '"Braun, V"'
Autor:
Bali, G. S., Braun, V. M., Bürger, S., Göckeler, M., Gruber, M., Kaiser, F., Kniehl, B. A., Veretin, O. L., Wein, P.
We present updated results on the wave function normalization constants and the first moments of the light cone distribution amplitudes for the lowest-lying baryon octet. The analysis is carried out on a large number of $n_f=2+1$ lattice gauge ensemb
Externí odkaz:
http://arxiv.org/abs/2411.19091
Autor:
Braun, V. M.
Publikováno v:
JHEP10(2023)134
We present explicit expressions for the tree-level "kinematic" twist-three contributions to the nucleon matrix elements of gauge-invariant nonlocal quark-antiquark operators which can be used in lattice calculations of generalized parton distribution
Externí odkaz:
http://arxiv.org/abs/2308.04270
Using the recent results on the contributions of descendants of the leading twist operators to the operator product expansion of two electromagnetic currents we derive explicit expressions for the kinematic finite-$t$ and target mass corrections to t
Externí odkaz:
http://arxiv.org/abs/2211.04902
Deeply-virtual Compton scattering gives access to the generalized parton distributions that encode the information on the transverse position of quarks and gluons in the proton in dependence in their longitudinal momentum. In anticipation of the high
Externí odkaz:
http://arxiv.org/abs/2207.06818
Conformal symmetry of QCD is restored at the Wilson-Fisher critical point in noninteger $4-2\epsilon$ space-time dimensions. Correlation functions of multiplicatively renormalizable operators with different anomalous dimensions at the critical point
Externí odkaz:
http://arxiv.org/abs/2205.08228
Using the approach based on conformal symmetry we calculate the two-loop coefficient function for the axial-vector contributions to two-photon processes in the $\overline{\rm MS}$ scheme. This is the last missing element for the complete next-to-next
Externí odkaz:
http://arxiv.org/abs/2106.01437
We consider the short-distance expansion of the product of two gluon field strength tensors connected by a straight-line-ordered Wilson line. The vacuum expectation value of this nonlocal operator is a common object in studies of the QCD vacuum struc
Externí odkaz:
http://arxiv.org/abs/2103.09478
Publikováno v:
Phys. Rev. D 103, 094018 (2021)
Evolution equations for leading twist operators in high orders of perturbation theory can be restored from the spectrum of anomalous dimensions and the calculation of the special conformal anomaly at one order less using conformal symmetry of QCD at
Externí odkaz:
http://arxiv.org/abs/2101.01471
Autor:
Braun, V., Zezulka, F., Marcon, P., Jirsa, J., Fiedler, P., Kaczmarczyk, V., Arm, J., Bradac, Z., Dohnal, P.
Publikováno v:
In IFAC PapersOnLine 2024 58(9):67-72
Using some techniques of conformal field theories, we find a closed expression for the contribution of leading twist operators and their descendants, obtained by adding total derivatives, to the operator product expansion (OPE) of two electromagnetic
Externí odkaz:
http://arxiv.org/abs/2011.04533