Article: Latest ATLAS results from Run 2
Authors: Claudia Gemme on behalf of the ATLAS Collaboration
Reference: arXiv:1612.01987 [hep-ex]
2016 certainly has been an…interesting year. There’s been a lot of division, so as the year winds down, this seems like a perfect time to reflect on something we can all get excited about: particle physics! This has been an incredible year for the ATLAS experiment and the LHC in general. Run 2 began in 2015, but really hit its stride this year. The LHC reached a peak luminosity of 1.37 x 1034 cm-2s-1, which exceeds the design luminosity by almost 40%! Additionally, the pile up (number of interactions per bunch crossing) nearly doubled with respect to 2015. From these delivered events, ATLAS was able to record 30 fb-1 of data at 13 TeV center-of-mass energy, with a DAQ (data acquisition) efficiency above 90%.
Before discussing the many analyses being done with this amazing new data set, I’d like to highlight some of the upgrades performed during the long shutdown (2013-2014) that allowed ATLAS to perform so well during Run 2. One of the most important improvements was the addition of the Insertable B-layer (IBL). The IBL is now the ...