Speaker
Daekyoung Kang
(LANL)
Description
Event shapes provide a key method of measuring jets in DIS. This was done successfully by H1 and ZEUS and compared with theoretical calculations with next-to-leading-logarithmic (NLL) resummation.
We will present a high precision calculation of a event shape called DIS thrust, with next-to-next-to-next-to-leading-logarithmic resummation and a rigorous treatment of hadronization corrections. Perturbative resummation uncertainties in the cross section are reduced to the 2% level for a significant region of the HERA phase space in $x$ and $Q$, thus allowing for new accurate measurements of $\alpha_s(m_Z)$.
Author
Daekyoung Kang
(LANL)
Co-authors
Christopher Lee
(LANL)
Iain Stewart
(MIT)
