Particle Physics Seminar

"Evidence for Single Top Quark Production at the tevatron"

Presented by Meenakshi Narain, Brown University

Thursday, January 11, 2007, 3:00 pm — Small Seminar Room, Bldg. 510

Scientists of the DZero collaboration at the Department of Energy's Fermi National Accelerator Laboratory announced in a seminar at Fermilab on December 8, 2006 the first evidence for single top quark production. The top quark was discovered in 1995, and still only very little is known experimentally about this elusive particle. It took about eleven years to observe its production via the electroweak interaction, which is of extreme interest because of its link to electroweak symmetry breaking. This production mode allows us to directly probe the t-W-b vertex and hence it is also a good way to look for effects beyond the Standard Model. I will present the details of the search methods which produced the recent evidence for electroweak production of single top quarks. In the longer term, the techniques employed in this analysis will allow us to search for an even more elusive particle, the Higgs boson.

Hosted by: Yannis Semertzidis

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