[Jlab-seminars] Theory Center Seminar

[Mary Fox]

Theory Center Seminar
Mon., Aug. 8, 2016
1:00 p.m. (coffee at 12:45 p.m.)
CEBAF Center, Room L102

*Hadron Structure from the Feynman-Hellmann Theorem in Lattice QCD

*Alexander Chambers
University of Adelaide

There has been much experimental, theoretical and computational effort 
expended in developing
our understanding of the internal structure of hadrons. Despite this 
there are many aspects that
remain to be fully understood. The exact nature of the spin 
decomposition of the nucleon is still
unknown, as is the behaviour of electromagnetic form factors of the pion 
and nucleon at higher
momentum transfers.

 From a lattice perspective problems arise in calculations of these 
quantities because of difficulties
accessing "disconnected" contributions to matrix elements, and poor 
signal-to-noise ratios associated
with boosted hadron states.

In this talk I will discuss results obtained from an alternative lattice 
methodology motivated by the
Feynman-Hellmann theorem.
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