University of Colorado High Energy Experimental Physics

BaBar

Ford and Smith lead one CU effort on BaBar. Their group concentrates on the discovery and CP analysis of charmless B decays. Recent results include a 5-sigma CP violating effect observed in B->eta' K0 and the discovery of B->b1(1235)X decays. Through the use of CU HEP computing, they also make significant contributions to Monte Carlo production.

Nauenberg leads the other CU effort on BaBar. His group has recently been working on the installation and commissioning of the muon LST system, drift chamber readout upgrades, and studies of beam induced backgrounds. The group is also investigating B->omega ell nu and B->rho ell nu decays.

BooNE

Zimmerman leads the MiniBooNE effort at CU. MiniBooNE excludes at the 98\% confidence level two-neutrino appearance oscillations as an explanation of the LSND anomaly. His group is responsible for the beam simulation and also built and operates the LMC (Little Muon Counter) part of the experiment.

CMS

Four faculty members are currently working on CMS with Ford and Smith expected to start working in 2009. Cumalat and Stenson are leading an effort to commission the forward pixel detector. Wagner is developing tracking software in addition to managing the tracking software group. Nauenberg is working on SUSY studies and assisting with the forward pixel effort. The group is interested in many physics topics including SUSY, electroweak, B-decays, and Upsilon production. CMS will start taking data when the LHC turns on in 2008.

FOCUS

Cumalat and Stenson lead the CU effort on FOCUS, a Fermilab fixed-target charm experiment. As co-spokesperson, Cumalat has guided the collaboration through construction, data-taking (in 1996-7), analysis, and publication (more than 60 papers to date). This effort is declining as the data analysis finishes and CMS responsibilities increase.

ILC

Nauenberg is leading the CU effort on the ILC. For many years, he has involved undergraduates in conducting simulations of various experimental configurations and their response to SUSY physics signals. Some of these results have been collected on a web page. Other students have worked on understanding a new detector technology, SiPD.

Wagner has worked on tracking studies for the ILC.

KTeV

The CU effort on KTeV is currently headed by Zimmerman and is in the process of winding down. KTeV provided the conclusive proof of direct CP violation in the kaon system and has made searches for neutral kaon rare decays as well as providing precise measurements of various K0 and pi0 branching ratios.

T2K

The T2K effort at CU is lead by Zimmerman. T2K is a long baseline neutrino oscillation experiment in Japan which will start data taking in 2009. The CU group is assembling horn 2 and working on other beam related issues.