Long-lived neutral particles have been proposed in many models of physics beyond the Standard Model, among them the Hidden-Valley scenario. These long-lived neutral particles may provide a novel path to a Higgs rare-decay discovery at the Large Hadron Collider. This note describes a search for neutral, long-lived particles produced in Higgs boson decays in pp collisions, at a center-of-mass energy of 8 TeV, which have a displaced decay mainly to bottom quarks. This analysis uses 20.3 fb−1 of data recorded with the ATLAS detector during 2012. The search focuses on decays in the Hadronic Calorimeter for Higgs masses between mH=100 GeV and 140 GeV and for πv masses between mπv=10 GeV and 40 GeV. No excess over background is observed and limits are set.
Searches for long-lived neutral particles decaying into Heavy Flavors In the Hadronic Calorimeter of ATLAS at sqrt{s} = 8 TeV
MASTROBERARDINO, Anna;
2013-01-01
Abstract
Long-lived neutral particles have been proposed in many models of physics beyond the Standard Model, among them the Hidden-Valley scenario. These long-lived neutral particles may provide a novel path to a Higgs rare-decay discovery at the Large Hadron Collider. This note describes a search for neutral, long-lived particles produced in Higgs boson decays in pp collisions, at a center-of-mass energy of 8 TeV, which have a displaced decay mainly to bottom quarks. This analysis uses 20.3 fb−1 of data recorded with the ATLAS detector during 2012. The search focuses on decays in the Hadronic Calorimeter for Higgs masses between mH=100 GeV and 140 GeV and for πv masses between mπv=10 GeV and 40 GeV. No excess over background is observed and limits are set.I documenti in IRIS sono protetti da copyright e tutti i diritti sono riservati, salvo diversa indicazione.
