English (United Kingdom)

https://curated-unify.zendy.io/wp-json/zendy-region/v1/featured_content/oa?rat=en

https://curated-unify.zendy.io/wp-json/zendy-region/v1/highlighted_journal/

Global: Zendy Plus annual

Presents the access of premium content as premium feature

Premium Content

Presents the keyphrase highlighting as premium feature

Keyphrase Highlighting

Presents the summarisation as premium feature

Summarisation

Insights

Presents the pdf analysis as premium feature

PDF Analysis

Presents the zaia usage as premium feature

ZAIA

Global: Zendy Tools annual

Global: Zendy Free Plan

Global: Zendy Tools monthly

Global: Zendy Plus monthly

We investigate the possibility of testing supergravity unified models withscalar masses in the range 50-100 TeV and much lighter gaugino masses at theLarge Hadron Collider. The analysis is carried out under the constraints thatmodels produce the Higgs boson mass consistent with experiment and also producedark matter consistent with WMAP and PLANCK experiments. A set of benchmarks inthe supergravity parameter space are investigated using a combination of signalregions which are optimized for the model set. It is found that some of themodels with scalar masses in the 50-100 TeV mass range are discoverable with aslittle as 100 fb$^{-1}$ of integrated luminosity and should be accessible atthe LHC RUN II. The remaining benchmark models are found to be discoverablewith less than 1000 fb$^{-1}$ of integrated luminosity and thus testable in thehigh luminosity era of the LHC, i.e., at HL-LHC. It is shown that scalar massesin the 50-100 TeV range but gaugino masses much lower in mass produceunification of gauge coupling constants, consistent with experimental data atlow scale, with as good an accuracy (and sometimes even better) as models withlow ($\mathcal{O}(1)$ TeV) weak scale supersymmetry. Decay of the gravitinosfor the supergravity model benchmarks are investigated and it is shown thatthey decay before the Big Bang Nucleosynthesis (BBN). Further, we investigatethe non-thermal production of neutralinos from gravitino decay and it is foundthat the non-thermal contribution to the dark matter relic density isnegligible relative to that from the thermal production of neutralinos forreheat temperature after inflation up to $10^9$ GeV. An analysis of the directdetection of dark matter for SUGRA models with high scalar masses is alsodiscussed.

Supergravity Models with 50-100 TeV Scalars, SUSY Discovery at the LHC and Gravitino Decay Constraints