Search for narrow resonance in b tagged high mass dijet distributions in proton-proton collisions at √s= 13.6 TeV

This analysis presented a search for narrow resonances in high-mass dijet events with masses above 1.4 TeV. The search was performed using Run 3 data collected by the CMS experiment at the LHC from proton-proton collisions at √s= 13.6$ TeV, corresponding to an integrated luminosity of 90 fb^-1 . The analysis targeted heavy resonances that decayed into quark pairs, which hadronized into jets and were reconstructed as high-mass dijet systems. Jets containing b-hadrons were identified using the Unified Particle Transformer algorithm, a state-of-the-art deep learning b-tagger that improved discrimination between b-quark jets and lighter-flavor jets. The improved identification of b-quark jets enhanced the sensitivity of the search to potential heavy resonance signals. Using this b-tagged dijet data we are able to search for models of excited bottom quarks (b*) and heavy vector bosons (Z').