A search is performed for heavy metastable particles that decay into jet pairs with a macroscopic lifetime (c tau similar to 1 cm) in p (p) over bar collisions at root 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. RI St.Denis, Richard/C-8997-2012; Robson, Aidan/G-1087-2011; Prokoshin, Fedor/E-2795-2012
Search for heavy metastable particles decaying to jet pairs in p(p)over-bar collisions at root s=1.96 TeV
PIACENTINO, Giovanni Maria;
2012-01-01
Abstract
A search is performed for heavy metastable particles that decay into jet pairs with a macroscopic lifetime (c tau similar to 1 cm) in p (p) over bar collisions at root 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. RI St.Denis, Richard/C-8997-2012; Robson, Aidan/G-1087-2011; Prokoshin, Fedor/E-2795-2012I documenti in IRIS sono protetti da copyright e tutti i diritti sono riservati, salvo diversa indicazione.
