Kyo Beum Lee

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F. Boehm, J. Busenitz, B. Cook, G. Gratta, H. Henrikson, J. Kornis, D. Lawrence, K. B. Lee, K. McKinny, L. Miller, V. Novikov, A. Piepke, B. Ritchie, D. Tracy, P. Vogel, Y-F. Wang, and J. Wolf Department of Physics and Astronomy, University of Alabama, Tuscaloosa, Alabama 35487 Department of Physics and Astronomy, Arizona State University, Tempe, Arizona(More)
F. Boehm,3 J. Busenitz,1 B. Cook,3 G. Gratta,4 H. Henrikson,3 J. Kornis,1 D. Lawrence,2 K. B. Lee,3 K. McKinny,1 L. Miller,4 V. Novikov,3 A. Piepke,1,3 B. Ritchie,2 D. Tracy,4 P. Vogel,3 Y-F. Wang,4 and J. Wolf1 1Department of Physics and Astronomy, University of Alabama, Tuscaloosa, Alabama 35487 2Department of Physics and Astronomy, Arizona State(More)
Using data from the FOCUS experiment we analyze the D+π− and D0π+ invariant mass distributions. We measure the D∗0 2 mass MD∗0 2 = (2464.5 ± 1.1 ± 1.9)MeV/c2 and width ΓD∗0 2 = (38.7±5.3±2.9)MeV/c2, and theD 2 massMD∗+ 2 = (2467.6± 1.5± 0.76)MeV/c2 and width ΓD∗+ 2 = (34.1± 6.5± 4.2)MeV/c2. We find evidence for broad structures over background in both the(More)
We apply a genetic programming technique to search for the doubly Cabibbo suppressed decays Λc → pKπ− and Ds → KKπ−. We normalize these decays to their Cabibbo favored partners and find BR(Λc → pKπ)/BR(Λc → pKπ+) = (0.05 ± 0.26 ± 0.02)% and BR(Ds → KKπ)/BR(Ds → KKπ+) = (0.52 ± 0.17 ± 0.11)% where the first errors are statistical and the second are(More)
The molecular mechanisms of the carcinogenic process of gastric cancer have not been fully understood yet. In order to know whether c-Ha-ras gene is being involved in the process of gastric carcinogenesis, 8 gastric cancer cell lines, 8 cases of gastric cancer and same number of adjacent dysplasia were analyzed for the presence of mutation at codon 12, 13(More)
We review genetic programming principles, their application to FOCUS data samples, and use the method to study the doubly Cabibbo suppressed decay D → Kπ+π− relative to its Cabibbo favored counterpart, D → Kππ. We find that this technique is able to improve upon more traditional analysis methods. To our knowledge, this is the first application of the(More)
We present a Kπ mass spectrum analysis of the four-body semileptonic charm decay D+ → K−π+μ+ν in the range of 0.65 GeV/c2 < mKπ < 1.5 GeV/c 2. We observe a non-resonant contribution of 5.30 ± 0.74 − 0.96% with respect to the total D+ → K−π+μ+ν decay. For the K∗(892)0 resonance, we obtain a mass of 895.41 ± 0.32 − 0.43 MeV/c 2, a width of 47.79 ± 0.86 − 1.06(More)