Search for $${text {Z}{}{}} {text {Z}{}{}} $$ and $${text {Z}{}{}} {text {H}{}{}} $$ production in the $${text {b}{}{}} {bar{{text {b}{}{}}}{}{}} {text {b}{}{}} {bar{{text {b}{}{}}}{}{}} $$ final state using proton-proton collisions at $$sqrt{s}=13,text {Te}hspace{-.08em}text {V} $$ Journal Article uri icon

Overview

abstract

  • AbstractA search for $${text {Z}{}{}} {text {Z}{}{}} $$; ; ; Z; ; ; ; ; Z; ; ; ; ; and $${text {Z}{}{}} {text {H}{}{}} $$; ; ; Z; ; ; ; ; H; ; ; ; ; production in the $${text {b}{}{}} {bar{{text {b}{}{}}}{}{}} {text {b}{}{}} {bar{{text {b}{}{}}}{}{}} $$; ; ; b; ; ; ; ; ; ; ; b; ; ; ; ; ; ¯; ; ; ; ; ; ; b; ; ; ; ; ; ; ; b; ; ; ; ; ; ¯; ; ; ; ; ; ; final state is presented, where H is the standard model (SM) Higgs boson. The search uses an event sample of proton-proton collisions corresponding to an integrated luminosity of 133$$,text {fb}^{-1}$$; ; ; ; fb; ; -; 1; ; ; ; collected at a center-of-mass energy of 13$$,text {Te}hspace{-.08em}text {V}$$; ; ; Te; ; V; ; with the CMS detector at the CERN LHC. The analysis introduces several novel techniques for deriving and validating a multi-dimensional background model based on control samples in data. A multiclass multivariate classifier customized for the $${text {b}{}{}} {bar{{text {b}{}{}}}{}{}} {text {b}{}{}} {bar{{text {b}{}{}}}{}{}} $$; ; ; b; ; ; ; ; ; ; ; b; ; ; ; ; ; ¯; ; ; ; ; ; ; b; ; ; ; ; ; ; ; b; ; ; ; ; ; ¯; ; ; ; ; ; ; final state is developed to derive the background model and extract the signal. The data are found to be consistent, within uncertainties, with the SM predictions. The observed (expected) upper limits at 95% confidence level are found to be 3.8 (3.8) and 5.0 (2.9) times the SM prediction for the $${text {Z}{}{}} {text {Z}{}{}} $$; ; ; Z; ; ; ; ; Z; ; ; ; ; and $${text {Z}{}{}} {text {H}{}{}} $$; ; ; Z; ; ; ; ; H; ; ; ; ; production cross sections, respectively.

publication date

  • July 19, 2024

has restriction

  • gold

Date in CU Experts

  • July 24, 2024 3:03 AM

Full Author List

  • Hayrapetyan A; Tumasyan A; Adam W; Andrejkovic JW; Bergauer T; Chatterjee S; Damanakis K; Dragicevic M; Hussain PS; Jeitler M

author count

  • 2345

Other Profiles

Electronic International Standard Serial Number (EISSN)

  • 1434-6052

Additional Document Info

volume

  • 84

issue

  • 7

number

  • 712