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  • Design and performance of the LHCb trigger and full real-time reconstruction in Run 2 of the LHC
    Aaij, R; Albrecht, J; Alexander, M; A Alfonso Albero; Anderlini, L; d'Argent, P; Baranov, A; Barter, W; Bobulska, D; Boettcher, T; Bowen, E E; Brarda, L; Burr, C; J -P Cachemiche; M Calvo Gomez; Chanal, H; Ciambrone, P; Cogan, J; S -G Chitic; Clemencic, M; Couturier, B; Daoudi, M; De Bruyn, K; De Cian, M; Deschamps, O; Dordei, F; Douglas, L; Dreimanis, K; Dujany, G; Dziurda, A; Esen, S; Fitzpatrick, C; Fontanna, M; Frank, M; M Van Veghel; Gerstel, D; Ghez, Ph; Gizdov, K; Guz, I; J He; Hill, D; W Hu; Hulsbergen, W; Y Li; Linn, C P; Lupton, O; Johnson, D; Jones, C R; Jost, B; R Le Gac; Lefèvre, R; Leroy, O; Machefert, F; Marchand, J F; C Marin Benito; Martinelli, M; D Martinez Santos; Matev, R; Michielin, E; Mohamed, H; Morello, M J; Naik, P; Neubert, S; Neufeld, N; Niel, E; Perret, P; Polci, F; Prisciandaro, J; Prouve, C; A Puig Navarro; Raven, G; Rethore, F; V Rives Molina; Robbe, P; Sarpis, G; Schiller, M; Schwemmer, R; Sciascia, B; Seyfert, P; M -H Schune; Smith, M; Sokoloff, M; Spradlin, P; Stahl, M; Stahl, S; Stracka, S; Szymanski, M; Traill, M; Vesterinen, M; Voneki, B; Wang, M; Weisser, C; Whitehead, M; Williams, M; Winn, M; Xiang, Z; A Xu; Z Xu; Zhang, Y; Zhou, Y

    arXiv.org, 06/2019
    Paper, Journal Article

    The LHCb collaboration has redesigned its trigger to enable the full offline detector reconstruction to be performed in real time. Together with the real-time alignment and calibration of the detector, and a software infrastructure to make persistent the high-level physics objects produced during real-time processing, this redesign enabled the widespread deployment of real-time analysis during Run 2. We describe the design of the Run 2 trigger and real-time reconstruction, and present data-driven performance measurements for a representative sample of LHCb's physics programme.

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