[PDF] Top 20 Performance of b -jet identification in the ATLAS experiment

... sim b is derived, is corrected for known differences between data and simulation in the b-jet ...various b-hadron decay modes giving rise to a muon are scaled to the world average values [26], ... See full document

... the b-tagging develop- ments in ATLAS during Run 1 of the LHC in the years 2010 – ...of b jets on the small samples available at the start of Run 1 have meanwhile been abandoned in favour of more ... See full document

... identify b-jets as typically tracks originating from a b-hadron decay will have larger impact pa- rameters as they originate from a di ff erent production ... See full document

... The ATLAS experiment [1] at the LHC is a multi-purpose particle detector with a forward-backward symmetric cylindrical geometry and a near 4 π coverage in solid ...by ATLAS at center of mass energy √ ... See full document

... The ATLAS detector is composed of several sub-detectors organised in ...The ATLAS experiment is a general purpose detector designed to investigate a wide range of particle physics, which can be ... See full document

... Events accepted by the HLT are written into separate data streams. Events for physics analyses are sent to a single Main stream replacing the three separate physics streams (Egamma, Muons, JetTauEtMiss) used in Run 1. ... See full document

... Before discussing the details of event generation, it is useful to first introduce the concept of an “event.” At the LHC, beams of protons are accelerated in opposite directions, and allowed to cross at specific ... See full document

... A search for Dark Matter pair production in association with bottom or top quarks has been presented in Ref. [40]. Aside from being sensitive to three EFT operators (C1, D1 and D9), this analysis also places constraints ... See full document

... Multi-jet events were generated using fixed-order QCD matrix elements (2 → n, with n = 2, 3, 4, 5, 6) with Alpgen 2.14 [45] utilizing the CTEQ6L1 PDF set [46], interfaced to Jimmy [47] and Herwig 6.520 [48]. The ... See full document

... one in the central public library of the city of Veria (about 50km west of Thessaloniki) and a second one at the New Town Hall of Thessaloniki. The Veria public library is very popular to its citizens since it constantly ... See full document

... bb identification) relies primarily on b-tagging to suppress the large QCD back- ...the jet mass and other substructure variables can bring sensitivity improvements ...one b-tag provides a ... See full document

... D. Guest 169 , O. Gueta 158 , R. Gugel 53 , B. Gui 122 , T. Guillemin 5 , S. Guindon 35 , U. Gul 58 , C. Gumpert 35 , J. Guo 61c , W. Guo 103 , Y. Guo 61a,q , R. Gupta 43 , S. Gurbuz 12c , G. Gustavino 124 , B.J. ... See full document

... The previous results have shown that due to the correla- tions at di ff erent center-of-mass energies, it is possible to increase the precision of the data. These can then be used to constrain the PDF uncertainties in a ... See full document

... (˜ b) can thus be produced either from decays of gluinos or directly, as illustrated by the Feynman diagrams of ...the ATLAS stop mass reach for all the considered decay ... See full document

... the ATLAS and CMS experiments exploiting different signatures, ranging from abnormal energy losses, to appearing or disappearing tracks, displaced vertices, lepton-jet signatures, long time-of-flight or late ... See full document

... Four types of muon reconstruction criteria are used, based on the available information from the ATLAS sub-detectors (illustrated on Fig. 1). The type of muons that their trajectory is reconstructed using ... See full document

... In this study, in order to compare the cleaning performance of each nozzle within a short period of time, the cleaning was conducted after operating it at 40 g/min of the dust loading for 30 minutes. As can be ... See full document

... B. Stelzer 144 , H. J. Stelzer 32 , O. Stelzer-Chilton 163a , H. Stenzel 55 , G. A. Stewart 56 , J. A. Stillings 23 , M. C. Stockton 118 , M. Stoebe 90 , G. Stoicea 28b , P. Stolte 57 , S. Stonjek 103 , A. R. ... See full document

... T. Nakamura 156 , I. Nakano 113 , H. Namasivayam 43 , R. F. Naranjo Garcia 44 , R. Narayan 11 , D. I. Narrias Villar 60a , I. Naryshkin 124 , T. Naumann 44 , G. Navarro 21 , R. Nayyar 7 , H. A. Neal 91 , P. Yu. Nechaeva ... See full document

... the jet flavor dependence of the jet quenching, which is expected to depend on the flavor of the initial ...a b-jet identification algorithm for the first time in heavy ion collisions ... See full document