Browse Physics

Published December 22, 2008

Cosmology Particles & Fields

Mounting evidence seems to rule out weakly interacting massive particles (WIMPs ) as the source of a so-far unexplained signal in the DAMA/LIBRA experiments.

Published October 27, 2008

Particles & Fields

Researchers propose that the supersymmetric partners of the top and bottom quarks are spin 1 instead of spin 0.

Scott Pratt, Physics 1, 29 (2008) – Published October 13, 2008

Particles & Fields Nuclear Physics Interdisciplinary Physics

Energetic particle jets created in relativistic heavy-ion collisions might create detectable shock waves as they travel through the quark-gluon plasma.

Michael E. Peskin, Physics 1, 14 (2008) – Published August 18, 2008

Particles & Fields Astrophysics Accelerators

New arguments based on astrophysical phenomena constrain the possibility that dangerous black holes will be produced at the CERN Large Hadron Collider.

Stephen Godfrey, Physics 1, 11 (2008) – Published August 11, 2008

Particles & Fields

The BABAR collaboration at SLAC has observed the radiative decay of an excited state of bottomonium (the bound state of a bottom quark and its antiparticle) to its ground state ηb. Observing this long-sought ground state should enable better tests of quantum chromodynamic calculations of quark interactions and the computational approach called lattice quantum chromodynamics.

Michael L. Cherry, Physics 1, 9 (2008) – Published August 4, 2008

Particles & Fields Astrophysics

Forty years ago, it was predicted that there would be a sharp cutoff in the intensity of the very-high-energy cosmic rays that strike the earth’s surface. Two collaborations—the HiRes and Auger telescopes—are providing compelling evidence for this so-called “GZK effect.”