Usha Mallik, University of Iowa (image) University of Iowa Share Print E-Mail Caption University of Iowa physicist Usha Mallik is at the forefront in the search to confirm the existence of a particle believed to give mass to all matter. Her group helped build and operates a sub-detector at the Large Hadron Collider, a particle accelerator in Switzerland, to search for bottom quarks, which are thought to appear when a Higgs boson decays. Credit Tim Schoon, University of Iowa Usage Restrictions None Share Print E-Mail Disclaimer: AAAS and EurekAlert! are not responsible for the accuracy of news releases posted to EurekAlert! by contributing institutions or for the use of any information through the EurekAlert system.