Richard L. Arnowitt

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The neutralino-proton cross section is examined for supergravity models with R-parity invariance with universal and non-universal soft breaking. The region of parameter space that dark matter detectors are currently (or will be shortly) sensitive i.e. (0.1 − 10) × 10 −6 pb, is examined. For universal soft breaking (mSUGRA), detectors with sensitivity σ ˜ χ(More)
We consider here the constraints in SUGRA models on the SUSY parameter space due to current experimental bounds on the light Higgs mass m h , the b → sγ decay, the amount of neutralino cold dark matter Ωh 2 , and the muon magnetic moment. Models with universal soft breaking (mSUGRA) and non-universal gaugino or Higgs masses at M G are examined. For mSUGRA,(More)
This talk summarizes work by the ATLAS Collaboration at the CERN Large Hadron Collider on the search SUSY particles and Higgs bosons and on possible measurements of their properties. This talk summarizes work by the ATLAS Collaboration at the CERN Large Hadron Collider on the search SUSY particles and Higgs bosons and on possible measurements of their(More)
This dissertation is devoted to deriving the bosonic sectors of certain gauged supergravities in various dimensions from reducing eleven-dimensional supergravity, type IIA and type IIB supergravities in ten dimensions on certain spherical spaces. Explicit non-linear Kaluza-Klein ansätze for reductions of eleven-dimensional super-gravity and of type IIA and(More)
It is a great pleasure to present this work in honor of Pran Nath, whose many important contributions to quantum field theory, supergravity grand unification, and their consequences have been on the forefront of modern particle physics. We examine the gravitational forces in a brane-world scenario felt by point particles on two 3-branes bounding a(More)
We study the feasibility of detecting the stau neutralino (˜ τ 1-˜ χ 0 1) coannihilation region at the LHC using tau (τ) leptons. The signal is characterized by multiple low energy τ leptons from˜χ 0 2 → τ ˜ τ 1 → τ τ ˜ χ 0 1 decays, where the˜τ 1 and˜χ 0 1 mass difference (∆M) is constrained to be 5-15 GeV by current experimental bounds including the bound(More)
The electron electric dipole moment (d e) and the muon magnetic moment anomaly (a µ) recently observed at BNL are analyzed within the framework of SUGRA models with CP violating phases at the GUT scale. It is seen analytically that even if d e were zero, there can be a large Bino mass phase (ranging from 0 to 2π) with a corresponding large B soft breaking(More)