A search for GMSB sleptons with lifetime at ALEPH

Details A search for GMSB sleptons with lifetime at ALEPH A search for GMSB sleptons with lifetime at ALEPH

2001-10-12

arxiv.org/abs/hep-ex/0110022v2

Physics

High Energy Physics

High Energy Physics - Experiment

PhD thesis, more than 100 pages. V2: minor grammatical changes and added references

Scientific paper

A search for slepton production via the decay of pair-produced neutralinos has been performed under the assumption that the sleptons have observable lifetime in the detector before each decays to a lepton and a gravitino. Sleptons, neutralinos and gravitinos are particles predicted by the theory of supersymmetry, and are the supersymmetric partners of the Standard Model leptons, neutral bosons and of the graviton respectively. The search was performed in 628 inverse picobarns of data taken by the ALEPH detector at LEP centre-of-mass energies from 189 to 208 GeV. It was motivated by general predictions of Gauge-Mediated Supersymmetry Breaking (GMSB) models in which the lightest supersymmetric particle is always the gravitino. No evidence of the process was found. Model-independent cross-section limits are quoted as a function of neutralino mass, slepton mass and slepton lifetime in the case that the neutralino branching ratios to each slepton are equal at one third (the so-called slepton co-NLSP scenario, where NLSP stands for `Next-to-Lightest Supersymmetric Particle') and in the case that the neutralino decays exclusively to the stau (the stau-NLSP scenario). Excluded regions in the neutralino-stau mass plane are shown for four gravitino masses under model-specific assumptions.

Affiliated with

Also associated with

No associations

Rating

A search for GMSB sleptons with lifetime at ALEPH does not yet have a rating. At this time, there are no reviews or comments for this scientific paper.

If you have personal experience with A search for GMSB sleptons with lifetime at ALEPH, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and A search for GMSB sleptons with lifetime at ALEPH will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFWR-SCP-O-327785