69 citations · 946 across the 46 of their papers we have counts for
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Transverse single spin asymmetry in direct photon production in polarized pA collisions
Andreas Schäfer, Jian Zhou
We study the transverse single spin asymmetry in direct photon production in pA collisions with incoming protons being transversely polarized. To facilitate the calculation, we for…
Transverse single spin asymmetry in hadronic production
Andreas Schäfer, Jian Zhou
We study the transverse single spin asymmetry in production in polarized hadron collisions, employing the collinear twist-3 approach in combination with the color singlet…
A note on the scale evolution of the ETQS function T_F(x,x)
Andreas Schäfer, Jian Zhou
We reexamine the scale dependence of the ETQS (Efremov-Teryaev-Qiu-Sterman) twist-3 matrix element which has been studied already by the four different groups with conflicting resu…
Double spin asymmetry A_{LT} in direct photon production
Zuo-Tang Liang, Andreas Metz, Daniel Pitonyak +3
We study the longitudinal-transverse double spin asymmetry for direct photon production in nucleon-nucleon scattering by using the collinear twist-3 approach. This asymmet…
Euler-Heisenberg Lagrangian to all orders in the magnetic field and the Chiral Magnetic Effect
Simon Wolfgang Mages, Matthias Aicher, Andreas Schäfer
In high energy heavy ion collisions as well as in astrophysical objects like magnetars extreme magnetic field strengths are reached. Thus, there exists a need to calculate divers Q…
Chaotic behavior in classical Yang-Mills dynamics
T. Kunihiro, B. Müller, A. Ohnishi +3
Understanding the underlying mechanisms causing rapid thermalization deduced for high-energy heavy ion collisions is still a challenge. To estimate the thermalization time, entropy…
Implications of N=1 supersymmetry for QCD conformal operators
A. V. Belitsky, D. Muller, A. Schafer
We prove a set of identities for the anomalous dimensions of the quark and gluon conformal operators in the flavour singlet channel in QCD. These relations arise from the graded co…
Quark Propagation in a Quark-Gluon Plasma with Gluon Condensate
Andreas Schaefer, Markus H. Thoma
We present a calculation of the thermal quark propagator taking the gluon condensate above the critical temperature into account. The quark dispersion relation following from this…
Crossover to Non-universal Microscopic Spectral Fluctuations in Lattice Gauge Theory
M. E. Berbenni-Bitsch, M. Göckeler, T. Guhr +7
The spectrum of the Dirac operator near zero virtuality obtained in lattice gauge simulations is known to be universally described by chiral random matrix theory. We address the qu…
Soffer's inequality and the transversely polarized Drell-Yan process at next-to-leading order
O. Martin, A. Schaefer, M. Stratmann +1
We check numerically if Soffer's inequality for quark distributions is preserved by next-to-leading order QCD evolution. Assuming that the inequality is saturated at a low hadronic…
Effect of the Haar measure on the finite temperature effective potential of Yang-Mills theory
K. Sailer, A. Schäfer, W. Greiner
Including the Haar measure we show that the effective potential of the regularized SU(2) Yang-Mills theory has a minimum at vanishing Wilson-line for strong coupling, whereas…
QCD sum rules with finite masses
M. Meyer-Hermann, A. Schäfer, W. Greiner
The concept of QCD sum rules is extended to bound states composed of particles with finite mass such as scalar quarks or strange quarks. It turns out that mass corrections become i…
Proton spin content from skyrmions
G. Kaelbermann, J. M. Eisenberg, Andreas Schaefer
It is well known that in lowest order the skyrmion model of the nucleon gives vanishing spin content. With new data indicating a proton spin content it is an in…