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VERSION:2.0
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CALSCALE:GREGORIAN
METHOD:PUBLISH
BEGIN:VEVENT
DTSTAMP:20260921T031005Z
LAST-MODIFIED:20121116T203436Z
DTSTART:20101025T163000Z
DTEND:20101025T173000Z
UID:event685@bu.edu
URL:http://physics.bu.edu/internal/events/show/685
SUMMARY:Systematic Improvement of Parton Showers with Effective Theory
DESCRIPTION:Featuring Matt Baumgart\, Johns Hopkins University\n\nPart of t
	he HET Seminar Series.\n\nAbstract:\nWe carry out a systematic classificati
	on and computation of next-to-leading order kinematic power corrections to 
	the fully differential cross section in the parton shower.  To do this we d
	evise a map between ingredients in a parton shower and operators in a tradi
	tional effective field theory framework using a chain of soft-collinear eff
	ective theories. Our approach overcomes several difficulties including avoi
	ding double counting and distinguishing approximations that are coordinate 
	choices from true power corrections. Branching corrections can be classifie
	d as hard-scattering\, that occur near the top of the shower\, and jet-stru
	cture\, that can occur at any point inside it. Hard-scattering corrections 
	include matrix elements with additional hard partons\, as well as power sup
	pressed contributions to the branching for the leading jet. Jet-structure c
	orrections require simultaneous consideration of potential $1\to 2$ and $1\
	to 3$ branchings.  The interference structure induced by collinear terms wi
	th subleading powers remains localized in the shower.
LOCATION:PRB 595\, 3 Cummington Mall\, 02215
STATUS:CONFIRMED
CLASS:PUBLIC
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