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- J. A. Aguilar-Saavedra, A. Ali, +93 authors S.-H. Zhu
- 2005

High-precision analyses of supersymmetry parameters aim at reconstructing the fundamental supersymmetric theory and its breaking mechanism. A well defined theoretical framework is needed when higher-order corrections are included. We propose such a scheme, Supersymmetry Parameter Analysis SPA, based on a consistent set of conventions and input parameters. A… (More)

1 Abstract We present a utilitarian review of the family of matrix groups Sp(2n, ℜ), in a form suited to various applications both in optics and quantum mechanics. We contrast these groups and their geometry with the much more familiar Eu-clidean and unitary geometries. Both the properties of finite group elements and of the Lie algebra are studied, and… (More)

- E Accomando, R Arnowitt, B Dutta, Y Santoso
- 2000

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)

- R Arnowitt, B Dutta, Y Santoso
- 2001

Coannihilation effects in neutralino relic density calculations are examined for a full range of supersymmetry parameters including large tan β and large A 0 for stau, chargino, stop and sbottom coannihilation with the neutralino. Supergravity models possessing grand unification with universal soft breaking (mSUGRA), models with nonuniversal soft breaking… (More)

- R Arnowitt, B Dutta
- 2002

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)

A general analysis of squeezing transformations for two mode systems is given based on the four dimensional real symplectic group Sp(4, ℜ). Within the framework of the unitary metaplectic representation of this group, a distinction between compact photon number conserving and noncompact photon number nonconserving squeezing transformations is made. We… (More)

- R Arnowitt, B Dutta, Y Santoso
- 2000

The range of neutralino-proton cross sections for R-parity preserving super-gravity models with GUT scale unification of the gauge coupling constants is examined. The models considered here are mSUGRA, models with non universal soft breaking and D-brane models. It is found that the current dark matter detectors are sampling significant parts of the SUSY… (More)

- R Arnowitt, B Dutta, Y Santoso
- 2001

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)

- R Arnowitt, B Dutta, B Hu, Y Santoso
- 2001

We examine the recently observed deviation of the muon g − 2 from the Standard Model prediction within the framework of gravity mediated SUGRA models with R parity invariance. Universal soft breaking (mSUGRA) models , and models with non-universal Higgs and third generation squark/slepton masses at M G are considered. All relic density constraints from… (More)

We consider the implications of an extended color group, SU (3) I × SU (3) II , spontaneously broken to SU (3) c at a TeV or lower scale, for the hadronic colliders. The associated massive color octet gauge bosons (the colorons) can enhance the tt pair production at the Tevatron collider. At the LHC, the colorons can be pair produced, each decaying to a tt… (More)