Eram Rizvi is a member of the ATLAS Collaboration at the LHC, and is studying the process of quark & anti-quark annihilation and the subsequent decay to muon and anti-muon. This process is sensitive to the distribution of quarks and gluons inside the proton, and therefore tells us about the dynamics of QCD - one of the four fundamental forces of nature. At high energies, this process is one of the main decay mechanisms for some new particles like a heavy Z' boson, or so-called Kaluza-Klein excitations of particles moving in hidden extra-dimensions.
Eram is also studying QCD in the Deep Inelastic Scattering of high energy electrons off the quark constituents of the proton at the H1 experiment in Hamburg, Germany. Precision measurements of the inclusive neutral and charged current cross sections provide complementary information about the quark and gluon content of the proton and his measurements allow stringent constraints to be placed on calculated processes at the LHC. These measurements are also sensitive to the Electroweak parts of the Standard Model and can be used to place limits on the quark radius.