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Full-Text Articles in Physical Sciences and Mathematics
Supersymmetric Discovery Potential And Benchmarks For Early Runs At √S=7 Tev At The Lhc, Baris Altunkaynak, Michael Holmes, Pran Nath, Brent D. Nelson, Gregory Peim
Supersymmetric Discovery Potential And Benchmarks For Early Runs At √S=7 Tev At The Lhc, Baris Altunkaynak, Michael Holmes, Pran Nath, Brent D. Nelson, Gregory Peim
Pran Nath
We carry out an analysis of the potential of the Large Hadron Collider (LHC) to discover supersymmetry in runs at √s=7 TeV with an accumulated luminosity of (0.1–2) fb⁻1 of data. The analysis is done with both minimal supergravity and supergravity models with nonuniversal soft breaking. Benchmarks for early discovery with (0.1–2) fb⁻1 of data are given. We provide an update of b-tagging efficiencies in PGS 4 appropriate for LHC analyses. A large number of signature channels are analyzed, and it is shown that each of the models exhibited are discoverable at the 5σ level or more above the standard …
Low Mass Gluino Within The Sparticle Landscape, Implications For Dark Matter, And Early Discovery Prospects At Lhc-7, Ning Chen, Daniel Feldman, Zuowei Liu, Pran Nath, Gregory Peim
Low Mass Gluino Within The Sparticle Landscape, Implications For Dark Matter, And Early Discovery Prospects At Lhc-7, Ning Chen, Daniel Feldman, Zuowei Liu, Pran Nath, Gregory Peim
Pran Nath
We analyze supergravity models that predict a low mass gluino within the landscape of sparticle mass hierarchies. The analysis includes a broad class of models that arise in minimal and in nonminimal supergravity unified frameworks and in extended models with additional U(1)Xn hidden sector gauge symmetries. Gluino masses in the range (350–700) GeV are investigated. Masses in this range are promising for early discovery at the LHC at √s=7 TeV (LHC-7). The models exhibit a wide dispersion in the gaugino-Higgsino eigencontent of their lightest supersymmetric particles and in their associated sparticle mass spectra. A signature analysis is carried out and …
Wmap Dark Matter Constraints And Yukawa Unification In Supergravity Models With Cp Phases, Mario E. Gomez, Tarek Ibrahim, Pran Nath, Solveig Skadhauge
Wmap Dark Matter Constraints And Yukawa Unification In Supergravity Models With Cp Phases, Mario E. Gomez, Tarek Ibrahim, Pran Nath, Solveig Skadhauge
Pran Nath
The compatibility of producing the observed amount of dark matter, as indicated by the Wilkinson Microwave Anisotropy Probe (WMAP) data, through the relic abundance of neutralinos with Yukawa unification and with the measured rate of b→sγ is analyzed in mSUGRA and extended SUGRA unified models with the inclusion of CP phases. The CP phases affect the analysis in several ways, e.g., through the threshold corrections to the b-quark mass, via their effects on the neutralino relic density and through the supersymmetry (SUSY) contribution to the BR(b→sγ) which is sensitive to the CP phases. We present some specific models with large …