University of Minnesota
School of Physics & Astronomy

Physics and Astronomy Calendar

Friday, March 4th 2016
11:15 am:
Speaker:  Dr. Rajan Gupta, Los Alamos National Lab
Subject: Nucleon Matrix Elements: From Charges to nEDM

In this talk I will present the progress we have made in the calculation of the matrix elements of quark bilinear operators within nucleons using lattice QCD. These are needed to probe many phenomenologically interesting quantities including (i) the isovector and flavor diagonal charges g_A, g_S and g_T; (ii) the electric, magnetic and axial vector form factors; (iii) generalized parton distribution functions (GPDs); (iv) the nucleon sigma term; (v) strangeness of the nucleon and (vi) the matrix elements of novel CP violating operators and their contributions to the neutron electric dipole moment. Strategies for obtaining high statistics results using the all-mode-averaging method and for for mitigating excited-state contamination will be discussed. I will present high statistics results for the charges and quark electric dipole moments and their implications for Split SUSY. I will also describe a new method for calculating the quark chromo electric dipole moments.

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