Author
K. Schönwald
Bio: K. Schönwald is an academic researcher from Karlsruhe Institute of Technology. The author has contributed to research in topics: Physics & Quantum chromodynamics. The author has an hindex of 12, co-authored 34 publications receiving 279 citations.
Topics: Physics, Quantum chromodynamics, Order (ring theory), Quark, Charm quark
Papers
More filters
TL;DR: In this paper, the authors calculate all contributions √ T F to the polarized three-loop anomalous dimensions in the M-scheme using massive operator matrix elements and compare to results in the literature.
39 citations
TL;DR: In this article, the unpolarized and polarized three-loop anomalous dimensions and splitting functions were calculated in the MS scheme by using the traditional method of space-like off shell massless operator matrix elements.
37 citations
TL;DR: In this paper, the authors presented the two-mass QCD contributions to the pure singlet operator matrix element at three-loop order in x-space, which is relevant for calculating the structure function F 2 ( x, Q 2 ) at O( α s 3 ) as well as for the matching relations in the variable flavor number scheme and the heavy quark distribution functions at the same order.
33 citations
TL;DR: In this paper, the non-singlet, the pure singlet contribution, and their interference term, at O ( α 2 ) due to electron-pair initial state radiation to e + e − annihilation into a neutral vector boson in a direct analytic computation without any approximation were calculated.
33 citations
TL;DR: Three-loop corrections to the relation between the heavy quark masses defined in the pole and kinetic schemes are computed and precise relations between the kinetic and MS[over ¯] charm and bottom masses are established.
Abstract: We compute three-loop corrections to the relation between the heavy quark masses defined in the pole and kinetic schemes. Using known relations between the pole and $\overline{\mathrm{MS}}$ quark masses, we can establish precise relations between the kinetic and $\overline{\mathrm{MS}}$ charm and bottom masses. As compared to two loops, the precision is improved by a factor of 2 to 3. Our results constitute important ingredients for the precise determination of the Cabibbo-Kobayashi–Maskawa matrix element |V$_{cb}$| at Belle II.
31 citations
Cited by
More filters
18 Sep 2019
TL;DR: Sherpa as discussed by the authors is a general-purpose Monte Carlo event generator for the simulation of particle collisions in high-energy collider experiments, which is heavily used for event generation in the analysis and interpretation of LHC Run 1 and Run 2 data.
Abstract: Sherpa is a general-purpose Monte Carlo event generator for the simulation of particle collisions in high-energy collider experiments. We summarize essential features and improvements of the Sherpa 2.2 release series, which is heavily used for event generation in the analysis and interpretation of LHC Run 1 and Run 2 data. We highlight a decade of developments towards ever higher precision in the simulation of particle-collision events.
297 citations
01 Jan 1992
TL;DR: In this article, the prescription for the γ5 matrix within dimensional regularization in multiloop calculations is elaborated and the three-loop anomalous dimension of the singlet axial current is calculated.
Abstract: The prescription for the γ5 matrix within dimensional regularization in multiloop calculations is elaborated. The three-loop anomalous dimension of the singlet axial current is calculated.
257 citations
TL;DR: Sherpa as discussed by the authors is a general-purpose Monte Carlo event generator for the simulation of particle collisions in high-energy collider experiments, which is heavily used for event generation in the analysis and interpretation of LHC Run 1 and Run 2 data.
Abstract: Sherpa is a general-purpose Monte Carlo event generator for the simulation of particle collisions in high-energy collider experiments. We summarize essential features and improvements of the Sherpa 2.2 release series, which is heavily used for event generation in the analysis and interpretation of LHC Run 1 and Run 2 data. We highlight a decade of developments towards ever higher precision in the simulation of particle-collision events.
203 citations
TL;DR: In this paper, a review of the field of electroweak corrections is presented, focusing on renormalization, one-loop techniques, modern amplitude methods and tools, separation of infrared singularities in real-emission corrections, electroweak issues connected with hadronic initial or final states in collisions, and the issue of unstable particles in quantum field theory together with corresponding practical solutions.
156 citations