A Search for Baryon Decay: Plans for the Harvard-Purdue-Wisconsin Water Cerenkov Detector
We describe the plans for and expected sensitivity of the HPW proton decay detector. Particular emphasis is placed on reconstruction and signal/ background studies. A brief discussion of future baryon number violation experiments concludes.
KeywordsNeutrino Oscillation Pulse Height Proton Decay Pulse Height Spectrum Muon Track
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- 1.Many references are found in J. Blandino et al., “A Decay Mode Independent Search for Baryon Decay Using a Volume Cerenkov Detector” and “A Multi Kilo Ton Detector to Search for Nucleon Decay”, proposals to the Department of Energy, U. of Wisconsin preprints, 1979, 1980, and also the following references: H. Georgi and S.L. Glashow, Phys, Rev. Lett. 32, 438 (1973). “Baryon and Lepton Non Conserving Processes”, S. Weinberg, Harvard Preprint, HUTP-79/A050; “The Future of Elementary Particle Physics”, S.L. Glashow, HUTP-79/A059. “On the Effective Lagrangian for Baryon Decay”, J. Ellis, M.K. Gaillard and D.V. Nanopoulos, CERN Theory Preprint (1979) and private communication. W.J. Marciano, Rockefeller University Preprint COO-2232B-173 (1979). T.J. Goldman and D.A. Ross, Phys. Lett. 84B, 208 (1979). H. Georgi, H. Quinn, S. Weinberg, Phys. Rev. Lett. 33, 451 (1974). F. Wilczek, talk at the Fermilab Electron-Photon Conference, 1979.Google Scholar
- 2.The success of “SU(5)” depends on the success of SU(3) and SU(2) × U(l); for example: mHiggs? mW,Z? Generations mC, mb’, mt’? C-P violation? m and v oscillations? Desert? n electric dipole? confinement…? SU(5) monopoles? The successes in Reference 1 are, however, still of great encouragement.Google Scholar
- 3.Cosmological implications are reviewed by G. Steigman in “The Proceedings of the Conference on Non-Conservation of Baryon Number”, Dec. 1979, U. Wisconsin Publication and also in Reference 1.Google Scholar
- 4.For a discussion and current proton decay limits, see, for example, F. Reines in “Unification of Elementary Forces and Gauge Fields”, Ben Lee Memorial Conference, Fermilab Pub., October 1977.Google Scholar
- 5.For example, P(n)2 ≈ n-5 where n is the muon multiplicity; n has been observed as high as 13/m in 1 μsec. deep underground. The Kolar events have been ascribed to neutral heavy leptons, background or other phenomena.Google Scholar
- 6.For example, Composite Classifier, Sequential Weight Incremental Factor, and Hierarchy Segmentation Techniques.Google Scholar