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07/06/12 - CERN to give update on Higgs search as curtain raiser to ICHEP conference

IU Professor Hal Evans comments on the CERN Higgs seminar, where both ATLAS and CMS presented their results.

Specific IU Contributions and other details:

1) The Large Hadron Collider performance exceeded expectations again in 2012. More than double the amount of data that we collected in 2011 has already been delivered to the two experiments (ATLAS and CMS) and there are still four months of running left. We have analyzed this new data in order to present updated results on our search for the Higgs boson at the International Conference on High Energy Physics (ICHEP) that is being held in Melbourne, Australia from July 4-11.

2) Staff and faculty in the IU College of Arts and Sciences' Department of Physics designed and built approximately one-half of the barrel Transition Radiation Tracker detector, a device that significantly enhances ATLAS' ability to identify electrons produced in the collisions. Because it can reconstruct trajectories of charged particles and identify produced electrons, the Transition Radiation Tracker is considered a critical detector element in ATLAS' search for the Higgs boson. The TRT has continued to perform well in 2012 even in the harsher environment produced by the high beam intensities achieved by the LHC.

3) The team also partners with the University of Chicago in managing ATLAS' Midwest Tier2 computing center, which has hardware in Bloomington, at Indiana University-Purdue University Indianapolis and in Chicago. This center is one of only five such ATLAS computing centers in the U.S., and it makes heavy use of the Open Science Grid, to which IU has made major contributions. The facility played a major role in producing the simulated data that we use to understand our new result.

4) IU scientists are also among the primary authors of 14 peer-reviewed journal publications based on ATLAS data.

The current IU ATLAS group:

  • Faculty: Hal Evans, Sabine Lammers, Harold Ogren (retired), Rick van Kooten
  • Research Scientists: Gauline Gagnon, Vivek Jain (now at SUNY Albany), Fred Luehring, Daria Zieminska Postdocs: Sylvie Brunet, Darren Price, Ximo Poveda
  • Grad Students: Aparajita Dattagupta, KyungEon Choi, John Penwell, Ben Weinert, Denver Whittington, Yi Yang (now at Ohio State U)
  • Engineers: Kirill Egorov
  • Administration: Jenny Olmes-Stevens