Measurements of Masses in SUGRA Models at LHC

Details Measurements of Masses in SUGRA Models at LHC Measurements of Masses in SUGRA Models at LHC

1999-07-27

arxiv.org/abs/hep-ph/9907518v1

Phys.Rev.D62:015009,2000

Physics

High Energy Physics

High Energy Physics - Phenomenology

30 pages, 22 figures

Scientific paper

10.1103/PhysRevD.62.015009

This paper presents new measurements in a case study of the minimal SUGRA model with m_0=100 GeV, mhalf=300 GeV, A_0=0, tan(beta)=2.1, and mu=+1 based on four-body distributions from three-step decays and on minimum masses in such decays. These measurements allow masses of supersymmetric particles to be determined without relying on a model. The feasibility of testing slepton universality at the ~0.1% level at high luminosity is discussed. In addition, the effect of enlarging the parameter space of the minimal SUGRA model is discussed. The direct production of left handed sleptons and the non-observation of additional structure in the dilepton invariant mass distributions is shown to provide additional constraints.

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