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: http://zebu.uoregon.edu/~uochep/seminars/seminars-wint10.html
Дата изменения: Thu Mar 11 23:43:09 2010 Дата индексирования: Tue Oct 2 09:11:21 2012 Кодировка: Поисковые слова: jet |
January 8, 2010 (Friday) Eugene Lim, Columbia University
February 5, 2010 (Friday) Christopher Lee, UC, Berkeley
February 12, 2010 (Friday) Sergei Dubovsky, Stanford CANCELLED
February 15, 2010 Mariangela Lisanti, Stanford
March 1, 2010 (Monday) Johan Alwall, SLAC
March 5, 2010 (Friday) Spencer Chang
March 8, 2010 (Friday) Rouven Essig, Stanford
4:00pm, 472 Willamette Hall
Refreshments served at 3:45
Jets of hadrons are produced both by decays of strongly-interacting new particles beyond the Standard Model and by ordinary Standard Model interactions in high-energy collisions. Discovering new physics at the Tevatron or LHC will require reliable identification of the underlying high-energy particles that produce different jets. Jet shapes are a measure of how a jet's constituents are distributed and encode information about what underlying energetic particle initiated the jet. Calculating shapes of jets defined with a jet algorithm to high precision is a challenging theoretical task in quantum chromodynamics. I describe our recent progress in applying effective field theory to the precision calculation of jet shapes, achieving a consistent factorization theorem for jet shape cross-sections and resumming perturbation series containing large logarithms of the jet shape in the limit of highly-collimated jets. As an initial demonstration of the utility of jet shapes, I illustrate how to distinguish quark-initiated and gluon-initiated jets in three-jet events in electron-positron collisions.
4:00pm, 472 Willamette Hall
Refreshments served at 3:45
4:00pm, 472 Willamette Hall
4:00pm, 472 Willamette Hall
Refreshments served at 3:45
4:00pm, 472 Willamette Hall
Refreshments served at 3:45
4:00pm, 472 Willamette Hall
Refreshments served at 3:45
4:00pm, 472 Willamette Hall
Refreshments served at 3:45