Assistant Professor
Ph.D., University of Mainz

Research Interests:

My research interests mainly comprise:

a) the physics of the strong interaction from the low to the  high energy regime.

b) the quark and gluon (spin) structure of hadrons (most notably of the nucleon) as expressed through different kinds of parton distributions.

c) form factors of the nucleon.

d) single spin asymmetries in hard scattering processes.

e) partonic structure of hadrons beyond the collinear approximation.

f) QCD-factorization and universality of parton correlation functions.

Recent Publications:

J.C. Collins, A. Metz, Universality of soft and collinear factors in hard-scattering factorization, Phys. Rev. Lett. 93, 252001 (2004).

A. Metz, M. Schlegel, Recent progress in the understanding of single spin asymmetries, Annalen Phys. 13, 699 (2004).

A.V.~Efremov, K. Goeke, S. Menzel, A. Metz, P. Schweitzer, Sivers effect in semi-inclusive DIS and in the Drell-Yan process, Phys. Lett. B612, 233 (2005).

D. Amrath, A. Bacchetta, A. Metz, Reviewing model calculations of the Collins fragmentation function, Phys. Rev. D71, 114018 (2005).

K. Goeke, A. Metz, M. Schlegel, Parameterization of the quark-quark correlator of a spin-1/2 hadron, Phys. Lett. B618, 90 (2005).

J.C. Collins, A.V. Efremov, K. Goeke, S. Menzel, A. Metz, P. Schweitzer, Sivers effect in semi-inclusive deeply inelastic scattering, Phys. Rev. D73, 014021 (2006).

J.C. Collins, A.V. Efremov, K. Goeke, M. Grosse Perdekamp, S. Menzel, B. Meredith, A. Metz, P. Schweitzer, Sivers effect in Drell Yan at RHIC, Phys. Rev. D73, 094023 (2006).

K. Goeke, S. Meissner, A. Metz, M. Schlegel, Checking the Burkardt sum rule for the Sivers function by model calculations, Phys. Lett. B637, 241 (2006).

L.P. Gamberg, D.S. Hwang, A. Metz, M. Schlegel, Light-cone divergence in twist-3 correlation functions, Phys. Lett. B639, 508 (2006).

A. Metz, M. Schlegel, K. Goeke, Transverse single spin asymmetries in inclusive deep-inelastic scattering, Phys. Lett. B643, 319 (2006).

A. Bacchetta, M. Diehl, K. Goeke, A. Metz, P.J. Mulders, M. Schlegel, Semi-inclusive deep inelastic scattering at small transverse momentum, JHEP 0702, 093 (2007).

S. Meissner, A. Metz, K. Goeke, Relations between generalized and transverse momentum dependent parton distributions, Phys. Rev. D76, 034002 (2007).

H. Avakian, A.V. Efremov, K. Goeke, A. Metz, P. Schweitzer, T. Teckentrup, Are there approximate relations among transverse momentum dependent distribution functions?, Phys. Rev. D77, 014023 (2008).

S. Meissner, A. Metz, M. Schlegel, K. Goeke, Generalized parton correlation functions for a spin-0 hadron, JHEP 0808, 038 (2008).

S. Arnold, A. Metz, M. Schlegel, Dilepton production from polarized hadron hadron collisions, Phys. Rev. D79, 034005 (2009).

A. Metz, P. Schweitzer, T. Teckentrup, Lorentz invariance relations between parton distributions and the Wandzura-Wilczek approximation, arXiv:0810.5212 [hep-ph], to appear in Phys. Lett. B.

S. Meissner, A. Metz, Partonic pole matrix elements for fragmentation, Phys. Rev. Lett. 102, 172003 (2009).

S. Meissner, A. Metz, M. Schlegel, Generalized parton correlation functions for a spin-1/2 hadron, JHEP 0908, 056 (2009).