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DESY Theory Seminar

Effective field theory of unstable top

Name: Effective field theory of unstable top
Start: 2013-06-25T14:30:00+02:00
End: 2013-06-25T15:30:00+02:00
Location: DESY Hamburg

by Alexander Penin (U of Alberta)

Tuesday 25 Jun 2013, 14:30 → 15:30 Europe/Berlin

DESY Hamburg

Description

We develop a new nonrelativistic effective field theory to describe the finite lifetime effects in the threshold production of top quark- antiquark pairs. The theory is based on the expansion in a parameter rho=1-m_W/m_t characterizing the dynamics of the top-quark decay. The approach is applied to high-order analysis of the top quark-antiquark production at an electron-positron collider.