The HDMS Detector and the Measured Spectra

The HDMS (Heidelberg Dark Matter Search) project operates two ionization HPGe detectors at the Gran Sasso National Laboratory (LNGS). The unique configuration of the two crystals is shown in Fig. 3 a small p-type enriched 73Ge crystal with a mass of 202 g (enrichment 86 ) is surrounded by a welltype natural Ge crystal of 2.111kg. Both the detectors are mounted in the same copper cryostat. The coaxial configuration of the two detectors was especially designed to reduce the background of the...

Shielding

The detector towers reside in a one-cubic-foot copper-walled enclosure, evacuated and cooled to 50 mK. The set of radio-pure copper cans required for the cryogenic operation of these detectors is called the icebox and constitute the innermost layer of passive shielding for the detectors. A 2 mm thick mu-metal can (a soft-iron alloy) surrounds the icebox to screen the detectors and their cold-readout electronics from magnetic fields. For the latter part of Run 118 this can also served the...

References

Berger, Sur les groupes d'holonomie des variet s a connexion affine et des vari t s riemannienes, Bull. Soc. Math. France 83, (1955), 279-310. 2. E. Calabi, On Kahler Manifolds with Vanishing Canonical Class, in Algebraic Geometry and Topology, A Symposium in Honor of S. Lefshetz, 1955 (Princeton University Press, Princeton, NJ (1957)). 3. S.-T. Yau, Calabi's Conjecture and Some New Results in Algebraic Geometry, Proc. Nat. Acad. Sci. 74 (1977), 1798. 4. V. Batyrev, Dual Polyhedra and Mirror...

Mx GeV

A scatter plot of the spin independent LSP-proton cross section vs LSP mass for the case p > 0 when Ys and m3 2 are integrated. The region with black circles satisfies the WMAP constraint. Present limits (top three contours) and future accessibility regions are shown. Taken from 1 . Upper Limits on Sparticle Masses 555 2000 H-1-1-1-- -h 0 H 1 i 1 i 1 i 1 i 1 i 1 i 1 0 0.1 0.2 0.3 0.4 0.5 0.6 0.7 Fig. 4. Plot is given of the contours of constant tan 3 and p in the (y3 -m3 2) plane for...

The Zeplin Ii Detector

The key features of the ZEPLIN II detector are (a) A shallow cylindrical chamber using 7 PMTs covering the top surface, and with liquid depth (14.1 cm). (b) Active target mass of 30 kg, to increase the number of events and to provide a realistic module for scale-up to larger masses. (c) Due to insufficient information about ionization from low energy xenon recoils, the detector was designed using a POLYTETRAFLUOROETH-YLENE (PTFE) cone to confine the liquid xenon active volume hence eliminate...

Discovery Reach for New Particles

In order to assess the potential of the Tripler for the discovery of new particles, Dutta 6 has calculated parton luminosities with which the constituents of colliding hadrons interact. Parton luminosities 7 are calculated for gluon-gluon scattering for the cases of the Tevatron, LHC, and the Tripler. The calculations use the CTEQ4 parton distributions 8 . The results are presented in Fig. 3 as a function of s, the c.m. energy for the colliding partons. The arrows indicate the requirement to...

MSUGRA Parameter Space

The mSUGRA parameter space is determined by four parameters and one sign. These four parameters are given at the GUT (MG) scale m0 (the universal scalar soft breaking mass) m1 2 (the universal gaugino soft breaking mass at MG) A0 (the universal cubic soft breaking) mass tan3 (H2) (H1) at the electroweak scale (where H2 gives rise to u quark masses and H1 to d quark and lepton masses). The sign is associated with the p Higgs mixing parameter in the superpotential (WM pH1H2). Various experimental...

List of Participants

Dipartimento di Fisica Teorica Universita di Torino ITALY Department of Physics Texas A& M University College Station Texas 77843-4242 USA Tel 1-979-845-4341 Fax 1-979-845-2590 Email allen tamu.edu Columbia University Physics Department 550W 120th St New York, NY 10027 USA Tel 212-854-3258 Fax 212-854-8121 Email age astro.columbia.edu Department of Physics Center for Theoretical Physics Texas A& M University College Station, TX 77843-4242 USA Tel (979) 845-7746 Fax (979) 845-2590 Email...

Precise Theory of Orbits in General Relativity the Cosmological Constant and the Perihelion Precession of Mercury

Texas A amp M University, Physics Department, College Station TX 77843-4242, Abstract. We first discuss the exact solution of the timelike geodesic and the perihelion precession in the Schwarzschild gravitational field without cosmological constant A. Results for the perihelion precession of Mercury and values of perihelion and aphelion are listed for different values of the invariant parameters. By use of Jacobi's inversion theorem the influence of the cosmological constant is taken into...

New Type Baryogenesis QGenesis

School of Physics, Seoul National University, Seoul 151-747, Korea jekim phyp.snu.ac.kr It is pointed out that if vector-like heavy quarks, Q, are present at a high energy scale then they can serve toward baryogenesis. We study a few phe-nomenological constraints on Q so that this idea is implementable. The observed facts in cosmology are i cosmic microwave background radiation, ii abundant light elements, iii galaxies and inter-galactic molecules, and iv dark matter and dark energy. We present...

Ai e2u A2 e2u

The solution can be reexpressed in terms of generalized Weierstrafi functions _ Explicit expressions for the orbit in terms of genus-2 theta functions are exhibited in 2 . In the presence of the cosmological term there are five branch points for the hyperelliptic surface, 27 , which are obtained by solving the quintic polynomial that appears in the time-like geodesics, 25 . For negative A all the roots are real. For positive A and depending on its magnitude and the values of the parameters L, E...

X0 T T T T x0

Where one of the two taus is a low energy one. The q decays into where the only in the final state has low energy. The same final states have been considered in 23 for a particular choice of the mSUGRA parameter space where M 0 81 GeV, M 0 152 GeV, M 151 GeV, and Mq 132 GeV. All taus in the final states are high energy taus, so that they required pT gt 50 GeV 23 . This point, however, does not account for the WMAP observed amount of dark matter. In the narrow stau neutralino co-annihilation...