Professor. Ph.D. Columbia University, 1963. Fellow, American Physical
Society. Member American Association for the Advancement of Science.
My group has made accurate tests of the Standard Model
using polarized electron annihilations with positrons in the Z energy scale at
the Stanford Linear Accelerator Center. I am now a member of the BaBar
Collaboration that is studying the CP violation phenomena in the b quark
sector. In particular I and my students have determined the decay B->
Psi(2S)Ks branching ratio and developed a method to associate photons into
pi-zeros in such a manner that we reduce the background. I am involved in the
study of the science potential of the International high energy Linear
Collider (ILC). The purpose of the collider is to study, in detail, the physics
beyond the Standard Model and the possibility of uncovering signals related to
supersymmetry. My group has proposed and is studying, both via hardware and
simulation efforts, a new geometric design of a scintillator based
electromagnetic calorimeter that maintains its excellent energy resolution
but improves substantially the determination of the photon direction. I am a
member of the international POWER group studying the
usefulness of positron polarization in such a collider. I am a co-leader of
the Supersymmetry study group in the American Linear Collider Physics
ConferencesWe and collaborators are hosting a meeting of the Deep Underground Science
and Engineering Laboratory (DUSEL) collaboration during January, 2005 in
Boulder. The purpose
is to continue our study on how to build such a Laboratory that the NSF is
considering to fund its construction in the near future. Colorado's Henderson
mine in the Rockies will be proposed (by a collaboration of the Colorado
Arapahoe Project, the Colorado School of Mines, Colorado State University, and
the University of Colorado Boulder) as such a site.
My group and collaborators are hosting a workshop, in August 2005, in
Snowmass, Colorado, of the International Linear Collider Collaboration. The
purpose is to continue to develop the detector and associated accelerator
Return to the index of Research Summaries
"Direct Measurement of Parity Violation in the Coupling of Z0
Bosons to b quarks Using a Mass Tag and Momentum Weighted Track Charge,"
The SLD Collaboration, Phys. Rev. Lett. 81, 942 (1998).
"An Improved Test of the Flavor Independence of Strong Interactions,"
The SLD Collaboration, Phys. Rev. D. 59, (1999).
"Measurement of the CP Asymmetry Amplitude sin(2&beta) with B0
Mesons," The BaBar Collaboration, Phys. Rev. Lett.89, 201802
"Study of the Time Dependent Asymmetry in Neutral B Decays to J/&psi
pi0." The BaBar Collaboration, Phys. Rev. Lett.91
"Measurement of the B0&rarr&psi(2S)K0 Branching Ratio."
BaBar note #823. August, 2004. To be published.
"Study of Supersymmetry Simulations and Calorimeter Development, Work on the
Return to the Department of Physics Home