No leptoquark here

摘要

Lazy photons, leptoquarks, string balls and colorons were just some of the exotic no-shows at the world's largest particle smasher. It was the most comprehensive particle roll call to date.The Large Hadron Collider at CERN, near Geneva, Switzerland, has become synonymous with the search for the Higgs boson, predicted by the standard model of physics. But physicists are also hoping that the LHC will throw up rare particles from theories that go way beyond the standard model, such as string theory.To that end, Eva Halkiadakis and colleagues from the CMS experiment, an LHC detector, sifted through the debris from 400 trillion proton smashes. They didn't find any particle exotica, Halkiadakis told a seminar at CERN on 31 January.