Paul E. Reimer

Physicist, Argonne National Laboratory

Research group: Medium Energy Physics

Phone: 630-252-4037

FAX: 630-252-3903

e-mail: reimer@anl.gov

Research interests

My research involves the study of the properties of the nucleon and of nuclei at the quark level. In this research, the Drell-Yan process is exploited to probe selectively the antiquark distributions of the target nuclei. In Fermilab E866/NuSea , this technique was used to determine the ratio of anti-d to anti-u quarks in the proton, which showed a surprisingly large flavor asymmetry in the sea quark distributions. I am one of the co-spokespersons of Fermilab E906 which will use a proton beam extracted from the Fermilab Main Injector to extend this measurement with significantly better statistical precision to larger values of x_Bj. E906 will also examine the antiquark distributions in nuclei, looking for an antiquark excess which would signal the presence of nuclear pions; absolute Drell-Yan cross sections as a measurement of the absolute magnitude of the sea quark distributions; and partonic energy loss in cold nuclear matter. As a member of the HERMES collaboration, I participate in the study of the longitudinal and transverse spin distributions of quarks in the nucleon.

I am also interested in studies of fundamental electroweak symmetries. These can be accessed at “low” energies using the CEBAF accelerator at the Thomas Jefferson National Accelerator Facility (JLab). I am co-spokesperson on two proposals, the 6 GeV PV-DIS E05-007 and the 12 GeV PVDIS (E12-07-102) that will together use Parity Violating Deep Inelastic Scattering to measure sin²θ_W and the quark-electron C_2q coupling constants.

Biographical sketch

2004-present Physicist, Argonne National Laboratory, Argonne, IL

1999-2004 Assistant Physicist, Argonne National Laboratory, Argonne, IL

1996-1999 Postdoctoral Research Appointee, Los Alamos National Laboratory, Los Alamos, NM

1996 Ph.D. Physics, University of Illinois, Urbana, IL

Selected Publications

• Exploring the Partonic Structure of Hadrons through the Drell-Yan Process, P.E. Reimer, J. Phys. G34, S107 (2007), arXiv:0704.3621.
• Measurement of Angular Distributions of Drell-Yan Dimuons in p + d interactions at 800 GeV/c, L.Y. Zhu et al. (Fermilab E866/NuSea Collaboration) Phys. Rev. Lett. 99, 082301 (2007), arXiv:hep-ex/0609005.
• The Pion Parton Distribution Function in the Valence Region, K. Wijesooriya, P.E. Reimer and R.J. Holt, Phys. Rev. C 72 065203 (2005), arXiv:nucl-ex/0509012.
• J/ψ Polarization in 800 GeV p-Cu Interactions, T.H. Chang et al. (Fermilab E866/NuSea Collaboration) Phys. Rev. Lett. 91, 211801 (2003), arXiv:hep-ex/0308001.
• Observation of the Polarization in Bottomonium Production at sqrt(s) = 38.8 GeV, C.N. Brown et al. (Fermilab E866/NuSea Collaboration) Phys. Rev. Lett. 86, 2529 (2001), arXiv:hep-ex/0011030.
• Improved Measurement of the anti-d/anti-u Asymmetry in the Nucleon Sea, R.S. Towell et al. (Fermilab E866/NuSea Collaboration) Phys. Rev. D 64, 052002 (2001), arXiv:hep-ex/0103030.
• Measurement of J/ψ and ψ' Suppression in p-A Collisions at 800 GeV/c, M.J. Leitch et al. (Fermilab E866/NuSea Collaboration) Phys. Rev. Lett. 84, 3256 (2000), arXiv:nucl-ex/9909007.
• Parton Energy Loss Limits and Shadowing in Drell-Yan Dimuon Production, M.A. Vasilev et al. (Fermilab E866/NuSea Collaboration) Phys. Rev. Lett. 83, 2304 (1999), arXiv:hep-ex/9906010.
• Anti-d/anti-u Asymmetry and the Origin of the Nucleon Sea, J.C. Peng et al. (Fermilab E866/NuSea Collaboration) Phys. Rev. D 58, 092004 (1998), arXiv:hep-ph/9804288.
• Measurement of the Flavor Asymmetry in the Nucleon Sea, E.A. Hawker et al. (Fermilab E866/NuSea Collaboration) Phys. Rev. Lett. 80 3715 (1998), arXiv:hep-ex/9803011.

Paul E. Reimer

27 September 2007