145 citations · 3k across the 88 of their papers we have counts for
11 papers · 1 filter
Massive Two-Loop Integrals and Higgs Physics
A. Frink, J. G. Körner, J. B. Tausk
We describe in some detail the present features of an automatic loop calculation program as well as the integration techniques that go into it. The program, called XLOOPS 1.0, allo…
Exclusive Nonleptonic Decays of Bottom and Charm Baryons in a Relativistic Three-Quark Model: Evaluation of Nonfactorizing Diagrams
M. A. Ivanov, J. G. Korner, V. E. Lyubovitskij +1
Exclusive nonleptonic decays of bottom and charm baryons are studied within a relativistic three-quark model with a Gaussian shape for the momentum dependence of the baryon-three-q…
Exclusive nonleptonic bottom to charm baryon decays including nonfactorizable contributions
M. A. Ivanov, J. G. Korner, V. E. Lyubovitskij +1
Exclusive nonleptonic decays of bottom baryons to charm baryons and pseudoscalar light mesons are analyzed within a relativistic three-quark model. We include factorizing as well a…
O(α_s) Corrections to Longitudinal Spin-Spin Correlations in e+e- -> q qbar
S. Groote, J. G. Körner, J. A. Leyva
We calculate the corrections to longitudinal spin-spin correlations in . For top quark pair production the corrections to the longitudinal spin…
An Analysis of Diagonal and Non-diagonal QCD Sum Rules for Heavy Baryons at Next-to-Leading Order in α_S
S. Groote, J. G. Körner, O. I. Yakovlev
We consider diagonal and non-diagonal QCD sum rules for the ground state heavy baryons to leading order in and at next-to-leading order in . In the non-diagonal case w…
Calculation of Infrared-Divergent Feynman Diagrams with Zero Mass Threshold
J. Fleischer, V. A. Smirnov, A. Frink +4
Two-loop vertex Feynman diagrams with infrared and collinear divergences are investigated by two independent methods. On the one hand, a method of calculating Feynman diagrams from…
Inclusive Semileptonic Decays of Polarized Baryons into Polarized -Leptons
S. Balk, J. G. Körner, D. Pirjol
We employ OPE techniques within HQET to calculate the inclusive semileptonic decays of polarized baryons. Lepton mass effects are included which enables us to also discuss ra…
Gluon Polarization in
S. Groote, J. G. Körner, J. A. Leyva
We calculate the linear polarization of gluons radiated off top quarks produced in e^+e^- annihilations. For typical top pair production energies at the Next-Linear-Collider (NLC)…
Resummation analysis of the decay width using the four-loop -function
S. Groote, J. G. Körner, A. A. Pivovarov
We extract the strong coupling constant from the semileptonic decay width taking into account resummation effects from the running of the strong coupling constant.…
New high order relations between physical observables in perturbative QCD
S. Groote, J. G. Körner, A. A. Pivovarov +1
We exploit the fact that within massless perturbative QCD the same Green's function determines the hadronic contribution to the decay width and the moments of the cros…
Infinite Momentum Frame Calculation of Semileptonic Heavy Λ_b\toΛ_c Transitions Including HQET Improvements
B. König, J. G. Körner, M. Krämer +1
We calculate the transition form factors that occur in heavy -type baryon semileptonic decays as e.g. in . We use Bauer-Stech-Wirbel ty…