cdms-ii - CDMS Experiment - University of California, Berkeley

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List of Figures 1.1 Fermion loop correction to the Higgs self energy. There are also corrections from loops with the gauge bosons and the Higgs itself. In the Standard Model, the t, W , and h loops give the largest contributions. 3 1.2 Galactic rotation curve for galaxy NGC3198 [4]. The non-Keplerian behavior of the flat rotation curve (instead of 1/ √ r) indicates a large fraction of the galactic mass is non-luminous. The dashed line corresponds to the mass distribution of visible matter. The dotted line corresponds to the distribution of gas. The dot-dashed line corresponds to the mass distribution of the non-luminous halo. . . . . . . . . . . . 4 1.3 Average rotation curves for ∼1000 spiral galaxies. Each plot shows the average rotation curve (solid line) for galaxies with the indicated luminosities (in absolute magnitude). The dotted lines corresponds to the contribution from the visible disc and the dashed lines correspond to the contribution from a dark halo. Figure from [5]. . . . . . . . . . 5 1.4 Exclusion limits for combined data from EROS and MACHO [8]. The top figure shows exclusion curves for five models considered by EROS [7] and the bottom figure shows exclusion curves for the eight models considered by MACHO [6]. . . . . . . . . . . . . . . . . . . . . . . . . 6 1.5 Excluded regions in the (ω b , ω d ) plane for combined SDSS and WMAP analysis. ω b = Ω b h 2 is the baryonic density and ω d = Ω d h 2 is the nonbaryonic matter density [11]. . . . . . . . . . . . . . . . . . . . . . 8 xvi
1.6 The number density of a stable particle versus time. When 〈σ A v〉 = H, the particle freezes out and the number density remains constant. The solid line corresponds to the equilibrium density. The dashed lines indicate the relic abundance for particles with different annihilation rates. Particles with larger annihilation rates freeze out later leaving a smaller relic abundance. Figure from [20]. . . . . . . . . . . . . . . 10 1.7 A boson loop contribution to the Higgs self energy that would exactly cancel the contribution from its fermion superpartner shown in Fig. 1.1. 12 1.8 Exclusion plot of various MSSM theories for parameters in the (m 0 , m 1/2 ) plane for tanβ=10 (left) and tanβ=55 (right). m 1,2 is the GUT gaugino unification mass, m 0 is the mass of the pseudoscalar Higgs. For both plots µ > 0. Note the light green region indicating the relic abundance constraints [32]. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 16 1.9 Some of the Feynman diagrams contributing to the spin independent neutralino nucleon cross section. For some models, couplings of the neutralino to gluons through quark and squark loops becomes important. 18 1.10 (a) The Woods-Saxon form factor for Ge, Si, and Xe. (b) The differential WIMP elastic scattering rate for Ge, Si, and Xe. (c) The integrated WIMP elastic scattering rate for Ge, Si, and Xe. Figure from [37]. . . 20 1.11 Plot of σ SI per nucleon versus WIMP mass. Exclusion curves for EDELWEISS (black dashed) [40], CDMS I - SUF (blue dashed) [41, 43], CDMS II - SUF (blue solid) [42, 37], ZEPLIN (magenta solid), and CRESST (magenta dashed). Cyan region corresponds to allowed models from Fig. 1.8[32]. Red region is the DAMA detection claim [39]. Limitplot courtesy of [44]. . . . . . . . . . . . . . . . . . . . . . . . . 24 xvii
Page 1 and 2: THE CRYOGENIC DARK MATTER SEARCH (C
Page 3: I certify that I have read this dis
Page 7 and 8: In loving memory of Helena Hsu. vii
Page 9: Acknowledgements It goes without sa
Page 12 and 13: 2.2 The Ionization Measurement . .
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136 BIBLIOGRAPHY [56] R. P. Welty a
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