Search for new phenomena with the variable in the all-hadronic final state produced in proton-proton collisions at

Area of Science:

• High Energy Physics
• Particle Physics
• Supersymmetry Searches

Background:

• Searches for new physics phenomena are crucial for understanding the universe.
• The Standard Model of particle physics has limitations and may be extended by theories like supersymmetry.
• Proton-proton collisions provide a high-energy environment to probe for new particles.

Purpose of the Study:

• To search for new phenomena beyond the Standard Model.
• To set exclusion limits on the masses of supersymmetric particles within simplified models.
• To provide data for re-interpretation of results in various theoretical frameworks.

Main Methods:

• Analysis of proton-proton collision data collected by the CMS detector in 2016.
• Utilizing events with jets and significant transverse momentum imbalance.
• Applying a 95% confidence level statistical analysis to observed event yields.

Main Results:

• No significant excess of events was observed above the Standard Model background prediction.
• Exclusion limits were placed on the masses of gluino, squarks (light-flavor, top, bottom) in R-parity conserving supersymmetry models.
• Lower limits on gluino and light-flavor squark masses reached up to 2025 (1550) GeV.
• Mass limits as high as 1070 (1175) GeV were set for top (bottom) squarks.

Conclusions:

• The absence of new phenomena supports the current Standard Model within the analyzed parameter space.
• The stringent exclusion limits constrain theories of supersymmetry, guiding future experimental and theoretical efforts.
• The provided model-independent limits enhance the utility of the results for broader phenomenological studies.