Bulletin of the American Physical Society
2005 APS April Meeting
Saturday–Tuesday, April 16–19, 2005; Tampa, FL
Session R1: Baryons: Birth and Death |
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Sponsoring Units: DPF Chair: Chris Quigg, Fermilab Room: Marriott Tampa Waterside Grand Salon E |
Monday, April 18, 2005 10:45AM - 11:21AM |
R1.00001: Proton decay: present and future Invited Speaker: The study of nucleon decay provides one of the few approaches to the problem of confronting grand unified theories with experimental data. This program has already been a success. The simplest unification model, minimal SU(5), has been ruled out by the experimental results. Current lower limits on the lifetime of the proton are in the range of 10$^{32}$ to 10$^{33}$ years. The search for nucleon decay requires massive detectors. A search with a sensitivity of 10$^{33}$ years requires a detector with approximately 10$^{33}$ nucleons. Since there are 6 x 10$^{29}$ nucleons per ton of material, this implies detectors of kiloton scale. Over the past two decades, there have been two types of nucleon decay detectors; Water Cerenkov detectors such as IMB, Kamiokande and Super-Kamiokande, and Fine Grain Sampling detectors such as KGF, NUSEX, Frejus and Soudan. I'll review the results from these detectors and the prospects for future detectors. While the data has not yet revealed proton decay, it has been able to show that still more sensitive searches are possible. [Preview Abstract] |
Monday, April 18, 2005 11:21AM - 11:57AM |
R1.00002: Leptogenesis Invited Speaker: |
Monday, April 18, 2005 11:57AM - 12:33PM |
R1.00003: New Results in Electroweak Baryogenesis Invited Speaker: Electroweak Baryogenesis provides an attractive scenario for the generation of the baryon asymmetry, relying only on physics at the weak scale. Low energy supersymmetry models provide the right ingredients for the realization of this scenario. They also contain a natural dark matter candidate, leading to a natural explantion of the origin of matter in the Universe. In this talk, I will present recent results on the study of electroweak baryogenesis, putting particular emphasis on the possible experimental tests of this scenario in the near future. [Preview Abstract] |
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