[Jlab-seminars] Theory Center Seminar

[Mary Fox]

Theory Center Seminar
Monday, March 24, 2014
4:00 p.m. (coffee at 3:45 p.m.)
CEBAF Center, Room L102

Mikhail Gorshteyn
University of Mainz

*The Low-Energy Frontier of the Standard Model: From Hadrons to New 
Physics *

The Standard Model (SM) has been tremendously successful in explaining 
all particle physics observations so far. However, there are strong 
indications that yet unknown particles and/or interactions have to 
exist. The Precision, or Low-Energy frontier of the Standard Model aims 
at detecting effects of this New Physics as deviations from the SM 
predictions in low-energy observables, and the precision of measurements 
and calculations of these observables is in direct correspondence with 
the scale at which the New Physics emerges. This requires understanding 
the SM at low energies, most notably the Quantum Chromodynamics (QCD), 
the theory of strong interactions. QCD explains the strongly interacting 
matter and its properties in terms of quarks and gluons, and it is a 
complicated multi-scale problem. The detailed understanding of the QCD 
in the non-perturbative regime is lacking, and a joined effort from 
Lattice, Effective Field Theories and Phenomenology is necessary. On the 
example of the parity-violating electron scattering and light muonic 
atoms I will review how state-of-the-art calculations helped improve the 
precision of the SM predictions in the kinematics of running and 
upcoming experiments, and motivated new dedicated experiments.

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