Event Displays from Collision Data

The collision event displays below are approved to be shown by ATLAS speakers at conferences and similar events. Click on the thumbnail images to access full-size displays. If you wish to use these event displays for other purposes than presentations of ATLAS results, please see the copyright statement.

This page shows events from the Run2 collisions starting in 2015. For non-collision event displays from Run2, please check here.

The main Event Display Public Page gives an overview on all available public event displays.

Heavy Ion Collisions

One of the first heavy-ion collisions with stable beams recorded by ATLAS in November 2015. Tracks reconstructed from hits in the inner tracking detector are shown as orange arcs curving in the solenoidal magnetic field. The green and yellow bars indicate energy deposits in the Liquid Argon and Scintillating Tile calorimeters respectively. The beam pipe and the inner detectors are also shown.
One of the first heavy-ion collisions with stable beams recorded by ATLAS in November 2015 can be found here.
One of the first heavy-ion collisions with stable beams recorded by ATLAS in November 2015 can be found here.

13 TeV Stable Beam Collisions

A high-mass dijet event. This event was collected in September 2015: the two central high-pT jets have an invariant mass of 8.8 TeV, the highest-pT jet has a pT of 810 GeV, and the subleading jet has a pT of 750 GeV. The missing ET for this event is 60 GeV.
The highest-mass dijet event passing the dijet mass analysis selection and the highest HT event in the multijet analysis presented at LHCP. This event was collected in August 2015 (Event 531676916, Run 276731) : the two central high-pT jets have an invariant mass of 5.2 TeV, the highest-pT jet has a pT of 2.5 TeV, and the subleading jet has a pT of 2.4 TeV. The third jet has a pT of 0.3 TeV and the HT (jet pT scalar sum) is 5.2 TeV. The missing ET and Sum ET for this event are 0.04 TeV and 5.7 TeV, respectively.
The highest-mass dijet event passing the dijet angular analysis selection presented at LHCP. This event was collected in August 2015 (Event 876578955, Run 276731): the two high-pT jets have an invariant mass of 6.9 TeV and the leading and subleading jet have a pT of 1.3 and 1.2 TeV respectively. The missing ET and Sum ET for this event are 0.1 TeV and 2.8 TeV, respectively.
A high-mass, central dijet event collected in July 2015 (Event 403602858, Run 271298): the two central high-pT jets have an invariant mass of 3.25 TeV, the highest-pT jet has a pT of 1.47 TeV, and the subleading jet has a pT of 1.40 TeV. The missing ET and Sum ET for this event are 55 GeV and 3.12 TeV, respectively. Only tracks with pT > 1 GeV are displayed.
An event display of a multi-jet event recorded on July 10th 2015. This event has 9 jets with pT > 50 GeV and |η| < 2.8. The scalar sum of the jet pT values in this event is found to be 2.93 TeV.
Display of a ZZ candidate event from proton-proton collisions recorded by ATLAS, with LHC beams at a collision energy of 13 TeV. The first Z boson candidate has a mass of 94 GeV and pT of 35 GeV. It is reconstructed from two oppositely charged muons (pT = 60 GeV, |η| = 0.62 and pT = 28 GeV, |η| = 0.49), which are shown in red. The other candidate has a mass of 86 GeV and pT of 19 GeV and is reconstructed from to two oppositely charged electrons (pT = 53 GeV, |η| = 0.18 and pT = 35 GeV, |η| = 0.17), shown as green tracks leading to energy deposits in the electromagnetic calorimeter. The four-lepton system has a mass, transverse momentum, and rapidity of 191 GeV, 24 GeV, and 0.05, respectively. Inner-detector tracks with a transverse momentum larger than 1 GeV are displayed as grey helices. A high resolution version is available here.
Display of a ZZ candidate event from proton-proton collisions recorded by ATLAS, with LHC beams at a collision energy of 13 TeV. The first Z boson candidate has a mass of 92 GeV and pT of 29 GeV. It is reconstructed from two oppositely charged electrons (pT = 51 GeV, |η| = 1.25 and pT = 45 GeV, |η| = 1.34), which are shown as green tracks leading to energy deposits in the electromagnetic calorimeter. The other candidate has a mass of 90 GeV and pT of 28 GeV and is reconstructed from to two oppositely charged muons (pT = 55 GeV, |η| = 0.53 and pT = 34 GeV, |η| = 1.24), shown in red. The four-lepton system has a mass, transverse momentum, and rapidity of 305 GeV, 4 GeV, and 0.26, respectively. Inner-detector tracks with a transverse momentum larger than 1 GeV are displayed as grey helices. A high resolution version is available here.
Display of a Z to mu mu candidate event from proton-proton collisions recorded by ATLAS on 14 June 2015, with LHC stable beams at a collision energy of 13 TeV. The red lines shows the paths of two muons through the detector, with transverse momenta of 44.1 and 44.7 GeV. The green and yellow bars indicate energy deposits in the liquid argon and scintillating-tile calorimeters. Charged particle tracks reconstructed from hits in the inner tracking detector are shown as orange arcs, curving in the solenoidal magnetic field. The reconstructed dimuon invariant mass is 90.2 GeV. A high resolution version is available here.
Display of a J/Psi candidate event from proton-proton collisions recorded by ATLAS on 14 June 2015, with LHC stable beams at a collision energy of 13 TeV. The red lines show the paths of two muons through the detector, with transverse momenta of 5.6 and 8.2 GeV. The green and yellow bars indicate energy deposits in the liquid argon and scintillating-tile calorimeters. Charged particle tracks reconstructed from hits in the inner tracking detector are shown as orange arcs, curving in the solenoidal magnetic field. The reconstructed dimuon invariant mass is 3.12 GeV. A high resolution version is available here.
Display of a proton-proton collision event recorded by ATLAS on 3 June 2015, with the first LHC stable beams at a collision energy of 13 TeV. Tracks reconstructed from hits in the inner tracking detector are shown as arcs curving in the solenoidal magnetic field. The green and yellow bars indicate energy deposits in the liquid argon and scintillating-tile calorimeters, clustered in a structure typical of a di-jet event. The transverse momentum of the jets are about 200 GeV and 170 GeV. The high resolution version is available in CDS. An animated version of this image is available in CDS and youtube
Display of a proton-proton collision event recorded by ATLAS on 3 June 2015, with the first LHC stable beams at a collision energy of 13 TeV. Tracks reconstructed from hits in the inner tracking detector are shown as arcs curving in the solenoidal magnetic field. The yellow rectangles along with the red and green bars indicate energy deposits in the liquid argon and scintillating-tile calorimeters. Tracks originate from several vertices, indicating multiple proton-proton interactions (also known as pile-up ) recorded in one event. The high resolution version is available in CDS.
Display of a proton-proton collision event recorded by ATLAS on 3 June 2015, with the first LHC stable beams at a collision energy of 13 TeV. Tracks reconstructed by the tracking detector are shown as light blue lines, and hits in the layers of the silicon tracking detector are shown as colored filled circles. The four inner layers are part of the silicon pixel detector and the four outer layers are part of the silicon strip detector. The layer closest to the beam, called IBL, is new for Run 2. In the view in the bottom right it is seen that this event has multiple pp collisions. The total number of reconstructed collision vertices is 17 but they are not all resolvable on the scale of this picture.. The high resolution version is available in CDS.
Display of a proton-proton collision event recorded by ATLAS on 3 June 2015, with the first LHC stable beams at a collision energy of 13 TeV. Tracks reconstructed from hits in the inner tracking detector are shown as arcs curving in the solenoidal magnetic field. The green and yellow bars indicate energy deposits in the liquid argon and scintillating-tile calorimeters. The high resolution version is available in CDS.
Display of a proton-proton collision event recorded by ATLAS on 3 June 2015, with the first LHC stable beams at a collision energy of 13 TeV. Tracks reconstructed from hits in the inner tracking detector are shown as arcs curving in the solenoidal magnetic field. The green and yellow bars indicate energy deposits in the liquid argon and scintillating-tile calorimeters. The high resolution version is available in CDS.

13 TeV Test Collisions

Display of a proton-proton collision event recorded by ATLAS on 21 May 2015 at a collision energy of 13 TeV. Tracks reconstructed from hits in the inner tracking detector are shown as arcs curving in the solenoidal magnetic field and green bars are proportional to the energy deposited in the electromagnetic calorimeter. A high energy electron and positron are identified with an invariant mass consistent with that of a Z boson. The high resolution version is available in CDS.
Display of a proton-proton collision event recorded by ATLAS on 21 May 2015 at a collision energy of 13 TeV. Tracks reconstructed from hits in the inner tracking detector are shown as arcs curving in the solenoidal magnetic field and the green bars indicate hits in the Muon spectrometer. In this event two muons are identified, and their invariant mass is consistent with that of a J/Psi meson. The high resolution version is available in CDS.
Display of a proton-proton collision event recorded by ATLAS on 21 May 2015 at a collision energy of 13 TeV. Tracks reconstructed from hits in the inner tracking detector are shown as arcs curving in the solenoidal magnetic field. The green and yellow bars indicate energy deposits in the Liquid Argon and Scintillating Tile calorimeters, clustered in a structure typical of a 4-jet event. The most energetic jet has a transverse energy of more than 200 GeV. The high resolution version is available in CDS.
Display of a proton-proton collision event recorded by ATLAS on 21 May 2015 at a collision energy of 13 TeV. Tracks reconstructed from hits in the inner tracking detector are shown as arcs curving in the solenoidal magnetic field. The green, red and yellow bars indicate energy deposits in the liquid argon and scintillating-tile calorimeters, clustered in a structure typical of a di-jet event. The most energetic jet has a transverse energy of about 45 GeV. [Run 265573 Event 4417696] The high resolution version is available in CDS.
Display of a proton-proton collision event recorded by ATLAS on 21 May 2015 at a collision energy of 13 TeV. Tracks reconstructed from hits in the inner tracking detector are shown as arcs curving in the solenoidal magnetic field. The green, red and yellow bars indicate energy deposits in the liquid argon and scintillating-tile calorimeters, clustered in a structure typical of a di-jet event. The most energetic jet has a transverse energy of about 45 GeV. [Run 265573 Event 4417696] The high resolution version is available in CDS.
Display of a proton-proton collision event recorded by ATLAS on 21 May 2015, at 13 TeV collision energy. Tracks reconstructed from hits in the inner tracking detector are shown to originate from two interaction points, indicating a pile-up event. [Run 265545 Event 5720351] The high resolution version is available in CDS.
Display of a proton-proton collision event recorded by ATLAS on 21 May 2015, at 13 TeV collision energy. Tracks reconstructed from hits in the inner tracking detector are shown to originate from two interaction points, indicating a pile-up event [Run 265545 Event 5720351] The high resolution version is available in CDS.
Display of a proton-proton collision event recorded by ATLAS on 20 May 2015, at 13 TeV collision energy. Tracks are reconstructed from hits in the outer parts of the inner tracking detector which were switched on at the time. The green and red bars indicate energy deposits in the Liquid Argon and Scintillating Tile calorimeters respectively. The high resolution version is available in CDS.

900 GeV Collisions

Display of a proton-proton collision event recorded by ATLAS on 6 May 2015, at 900 GeV collision energy. Tracks reconstructed from hits in the inner tracking detector are shown as orange arcs curving in the solenoidal magnetic field. The green and yellow bars indicate energy deposits in the Liquid Argon and Scintillating Tile calorimeters respectively. The high resolution version is available in CDS.
Display of a proton-proton collision event recorded by ATLAS on 6 May 2015, at 900 GeV collision energy. Tracks are reconstructed from hits in the inner tracking detector, including the new innermost pixel detector layer, the IBL. The IBL was turned on for the first time during collisions during this data-taking. The IBL is shown as the small ring in the left-hand azimuthal view, and the innermost layers in the right-hand longitudinal view.. The high resolution version is available in CDS.
Display of one of the first proton-proton collision events recorded by ATLAS on 5 May 2015, at 900 GeV collision energy. Tracks are reconstructed from hits in two of the tracking detectors (SCT and TRT). The high resolution version is available in CDS.

Responsible: ManuellaVincter
Subject: public