Comment on "constraints on proton structure from precision atomic-physics measurements".

Constraints on Proton Structure from Precision Atomic-Physics Measurements

Stanley J. Brodsky,1, ∗ Carl E. Carlson,2, † John R. Hiller,3, ‡ and Dae Sung Hwang4, § Stanford Linear Accelerator Center, Stanford University, Stanford, CA 94309 Particle Theory Group, Physics Department, College of William and Mary, Williamsburg, VA 23187-8795 Department of Physics, University of Minnesota-Duluth, Duluth, MN 55812 Department of Physics, Sejong University, Seoul 143-747, Kore...

Laboratory Limits on Temporal Variations of Fundamental Constants: An Update. arXiv preprint physics/0611088

Precision comparisons of different atomic frequency standards over a period of a few years can be used for a sensitive search for temporal variations of fundamental constants. We present recent frequency measurements of the 688 THz transition in the 171 Yb + ion. For this transition frequency a record over six years is now available, showing that a possible frequency drift relative to a cesium ...

Precision tests of QCD with jets and vector bosons at HERA and TevaTron

Recent results from HERA and TevaTron on precision tests of QCD with jets, W and Z bosons and photons associated with jets and heavy flavours are presented. The measurements were used to probe QCD at the highest energies, to provide experimental constraints on SM processes that constitute background to new physics, to extract values of the coupling of the strong interaction and to constrain the...

Comment on "Constraints on biological effects of weak extremely-low-frequency electromagnetic fields"

Nuclear Muon Capture on the Proton and He within the Standard Model and Beyond

Nuclear muon capture on the proton and He is considered both within and beyond the Standard Model in terms as general as is possible. Explicit and precise analytic expressions for all possible observables are given, assuming only a Dirac neutrino in the limit of vanishing mass. These results allow both for precision tests of the Standard Model and new physics, as well as for the assessment of t...