SUSY analysis idea twiki page

The SUSY analysis ideas live here.

We aim to maintain a list of analysis ideas that could be interesting to the SUSY group. Itís very possible that some are already being pursued in one form or another, or were previously investigated at some point and discarded for one reason or another. Some are clearly suited to high-luminosity running and may only now be starting to become interesting. Ideas are in no particular order and may partially overlap.

Areas of interest

GMSB signatures

In GMSB models, a nearly-massless Gravitino G is the LSP, leading to signatures where the lightest electroweakino N1 may decay via $\chi_{1}^{0} \to (\gamma/Z/h) \tilde{G}$.

Higgs decays

Decays of the Higgs boson into invisible particles is a key target at the LHC, with direct bounds currently at the level of O(10%). In SUSY this is realized in the process $h\to \chi_{1}^{0} \chi_{1}^{0}$, e.g. for a Bino-like LSP that may have mass less than $m_{h}/2$. However, such decays of the Higgs may be explored in scenarios where $\chi_{1}^{0}$ is unstable.

Complex EWK SUSY sectors

So far, have mostly have focused on general searches (2LOS, 2LSS / 3L) focusing on simplified models with decoupled sparticles (e.g. heavy Wino and light Bino, or heavy sleptons and light Bino). New signatures may arise from scenarios with mixed sparticles (e.g. nearby Higgsino/Wino or Higgsino/Bino) or non-minimal models (e.g. nMSSM).

Compressed scenarios

Scenarios involving sparticles whose mass differences are coincidentally small or near another SM particle mass.

Other motivations

B physics anomalies, muon g-2, etc.

R-parity violation

Novel decays, lack of MET, unconventional LSP (e.g. the stop, or chargino).

Stealth SUSY

For signatures where the usual LSP would lead to final states with large MET, the presence of a SM singlet S and its nearly mass-degenerate superpartner $\tilde{S}$ can lead instead to events with extra jets, for example via $\chi_{1}^{0}\to (\gamma/Z/h)\tilde{S}$ with $\tilde{S}\to S(gg/bb)\tilde{G}$

Mono-sparticle production

At very high masses, production of a single heavy sparticle may provide better sensitivity than standard pair production. E.g. $\tilde{q}\chi_{1}^{0}$ production instead of squark pairs.

SUSY Higgs

If the extra Higgs bosons predicted in SUSY do not decay dominantly to SM particles they may be uncovered. Similarly, could sparticles targeted by standard searches decay dominantly via SUSY Higgs (e.g. $\chi_{2}^{0}\to A(\tau\tau)\chi_{1}^{0}$)?

Novel objects

Large-radius jets. Soft leptons. Forward protons. Scouting.

Search ideas

Higgs decays to MET+X

Natural to target the VBF or VH channels. Interesting topologies include:

  • (Di)Photon + MET
  • 2/3/4-lepton + MET
  • Dijet(s) + MET

-- TheodorHerwig - 2021-05-03

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Topic revision: r2 - 2021-05-04 - TheodorHerwig
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