A multi-dimensional search for new heavy resonances decaying to boosted , , or boson pairs in the dijet final...

Area of Science:

• High Energy Physics
• Particle Physics
• Collider Physics

Background:

• Searches for new physics beyond the Standard Model are crucial.
• Resonances decaying to W, Z, or Higgs boson pairs are predicted by various theories.
• Previous searches have limitations in sensitivity and mass reach.

Purpose of the Study:

• To search for new massive resonances decaying into W, Z, or Higgs boson pairs.
• To improve sensitivity in the all-jet final state using a novel analysis method.
• To set exclusion limits on new resonances in specific theoretical models.

Main Methods:

• Analysis of proton-proton collision data at 13 TeV center-of-mass energy.
• Utilized an integrated luminosity of 77.3 fb⁻¹ from the CMS experiment.
• Employed a novel three-dimensional maximum likelihood fit of jet masses and dijet invariant mass for signal extraction.

Main Results:

• No significant excess was observed above the Standard Model background.
• Exclusion limits were set on spin-1 W' and Z' resonances up to 3.5 and 3.8 TeV, respectively.
• Upper limits on cross sections were established for bulk graviton resonances between 1.2 and 5.2 TeV.

Conclusions:

• The study achieved improved sensitivity of up to 30% compared to previous methods.
• The obtained limits are the most stringent to date for resonances in the dijet final state.
• The results constrain new physics models, including heavy vector triplet and bulk graviton models.