Search for heavy metastable particles decaying to jet pairs in $p\overline{p}$ collisions at $\sqrt{s}=1.96\text{ }\text{ }\mathrm{TeV}$

Search for heavy metastable particles decaying to jet pairs in $p \bar{p}$ collisions at $\sqrt{s} = 1.96 TeV$

T. Aaltonen et al. (CDF Collaboration)

Phys. Rev. D 85, 012007 – Published 24 January 2012

Abstract

A search is performed for heavy metastable particles that decay into jet pairs with a macroscopic lifetime ( $c τ \sim 1 cm$ ) in $p \bar{p}$ collisions at $\sqrt{s} = 1.96 TeV$ using data from the CDF II detector at Fermilab corresponding to an integrated luminosity of $3.2 {fb}^{- 1}$ . To estimate the standard model background, a data-driven approach is used. Probability-density functions are constructed to model secondary vertices from known processes. No statistically significant excess is observed above the background. Limits on the production cross section in a hidden valley benchmark phenomenology are set for various Higgs boson masses as well as metastable particle masses and lifetimes.