We propose precise and fast-track reconstruction at hadron collider experiments, for use in online trigger decisions. We describe the features of fast-track (FTK), a highly parallel processor dedicated to the efficient execution of a fast-tracking algorithm. The hardware-dedicated structure optimizes speed and size; these parameters are evaluated for the ATLAS experiment. We discuss some applications of high-quality tracks available to the trigger logic at an early stage, by using the LHC environment as a benchmark. The most interesting application is online selection of b-quarks down to very low transverse momentum, providing interesting hadronic samples: examples are Z(0) --> b (b) over bar, potentially useful for jet calibration, and multi-b final states for supersymmetric Higgs searches. The paper is generated from outside the ATLAS experiment and has not been discussed by the ATLAS collaboration.
|Autori interni:||CAVASINNI, VINCENZO|
RODA, CHIARA MARIA ANGELA
|Autori:||Annovi A; Bardi A; Campanelli M; Carosi R; Catastini P; Cavasinni V; Cerri A; Clark A; Dell'Orso M; Del Prete T; Dotti A; Ferri G; Giagu S; Giannetti P; Iannaccone G; La Malfa M; Morsani F; Punzi G; Rescigno M; Roda C; Shochet M; Spinella F; Torre S; Usai G; Vacavant L; Vivarelli L; Wu X; Zanello L|
|Titolo:||Hadron collider triggers with high-quality tracking at very high event rates RID C-4866-2008|
|Anno del prodotto:||2004|
|Digital Object Identifier (DOI):||10.1109/TNS.2004.828639|
|Appare nelle tipologie:||1.1 Articolo in rivista|