APS April Meeting 2019
Volume 64, Number 3
Saturday–Tuesday, April 13–16, 2019;
Denver, Colorado
Session H03: Sakurai Prize and Primakoff Award
Invited
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Sponsoring Units: DPF
Chair: Tao Han, University of Pittsburgh
Room: Sheraton Plaza E
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Sunday, April 14, 2019
10:45AM - 11:21AM
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H03.00001: Thinking Outside the Hypercube
Invited Speaker:
Lisa Randall
Model building and even creativity itself sometimes get a bad rap in
physics, either because ideas seem too out of the blue or because they
don’t seem to be derived from the rigorous mathematical deductions
present in some other types of physics fields. In this talk I explain
why both of these characterizations are misleading at best, and how
model building is designed to address real physical phenomena in a
rigorous manner. I will illustrate these claims with the history of the
ideas that went into formulating “RS1” and “RS2”, theories of a warped
extra dimension that were motivated by physical problems but tied into a
wide variety of theoretical frameworks and even led to upending some
commonly accepted theoretical wisdom. |
Sunday, April 14, 2019
11:21AM - 11:57AM
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H03.00002: From Higgs Compositeness to Higher Dimensions
Invited Speaker:
Raman Sundrum
While the Standard Model posits that the Higgs boson is an elementary particle, there are good reasons to explore the possibility that it is a composite of more fundamental constituents. However, the paradigm of Higgs compositeness is notoriously difficult to model theoretically as the basis for experimental tests, necessarily involving new strong binding forces that go beyond perturbative analysis, and bringing in the complex structure of couplings to the other known particles. I will review the surprising manner in which the Randall-Sundrum I model has evolved to address these challenges, trading a frontal attack on strong coupling for a weakly-coupled description set in higher-dimensional “warped” spacetime, in which the extra-dimensional excitations secretly describe new composites beyond the Higgs itself. We thereby obtain a theoretically controlled and comprehensive framework for particle physics and compositeness, with implications ranging from LHC searches to flavor/neutrino physics to dark matter to gravitational wave cosmology. |
Sunday, April 14, 2019
11:57AM - 12:33PM
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H03.00003: Boosting searches for new physics at the LHC
Invited Speaker:
Nhan Tran
Beyond the ground-breaking discovery of the Higgs boson at the Large Hadron Collider (LHC), deep and fundamental mysteries of physics persist. As we continue to pursue new physics at the LHC, we are faced with extremely challenging experimental environments, and yet, new technologies and techniques to make the most of the LHC data in novel ways. I will talk discuss how we have pushed the bounds of reconstruction with jet substructure to unearth potential signals at the LHC once thought to be hopeless. We have continued to push our sensitivity in the face of ever-increasing event complexity from growing pileup collision rates by inventing new pileup mitigation methods. I will conclude by describing how we will take such advanced reconstruction techniques and deploy them in all levels of event processing down to the sub-microsecond scale in the fast hardware trigger.
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