University of Maryland
Fundamental Physics and the Fifth Dimension
The central successes and puzzles of particle physics will be reviewed, at the intersection of Quantum Mechanics and Relativity. The 2012 discovery of the Higgs boson at the CERN Large Hadron Collider (LHC) will be used to illustrate both aspects. The grand principle of Naturalness will be introduced as the dominant organizing principle behind many searches for new physics beyond the Standard Model. The challenging task of testing naturalness will be summarized, especially the interplay between deep theoretical ideas, such as Extra Spacetime Dimensions, Compositeness and Supersymmetry, and experimental strategies at the LHC and even more powerful future colliders. The LHC is beginning its second phase of operations, at significantly higher energies than before, and this talk will give a satellite view of the big issues at stake in the coming years.
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