Angularity in DIS at next-to-next-to-leading log accuracy

Understand

Angularity is a class of event-shape observables that can be measured in deep-inelastic scattering.

• With its continuous parameter $a$ one can interpolate angularity between thrust and broadening and further access beyond the region.
• Providing such systematic way to access various observables makes angularity attractive in analysis with event shapes.
• We give the definition of angularity for DIS and factorize the cross-section by using soft-collinear effective theory.