ATLAS Higgs Candidate Events

ATLAS plots
Higgs boson decaying into two Z bosons each of which subsequently decays into two muons (red lines).
ATLAS plots
Higgs boson decaying into two photons (yellow cones).
ATLAS plots
Higgs boson decaying into two W bosons, where one W decays into two jets (yellow cones) and the other one into a muon (red line) and a muon neutrino (yellow dashed line).
ATLAS plots
Higgs boson decaying into two τs, each of which subsequently decay into either an electron (blue line) or a muon (red line).
Download

 

Lo resolution

 

Hi resolution
Higgs boson decaying into two photons (yellow cones).
Photo #: vp1_Hgg_run191426_evt86694500
Download

 

Lo resolution

 

Hi resolution
Higgs boson decaying into two Z bosons each of which subsequently decays into two muons (red lines).
Photo #: fig_33

More Higgs event displays here!

ATLAS Higgs Mass Plots

Our current situation. Having analyzed two and a half times more data than was available for the discovery announcement in July 2012, the confidence of observation, looking for a Higgs boson decaying into two photons and into two Z bosons has risen to 10 sigma. We also now see evidence for the Higgs boson decaying into two W bosons and into two τs (fermions).

ATLAS plots
Higgs boson decaying into two Z bosons each of which subsequently decays into two muons.
ATLAS plots
Higgs boson decaying into two photons
ATLAS plots
Higgs boson decaying into two W bosons
ATLAS plots
Higgs boson decaying into two τs
Download

 

 

Download
Higgs boson decaying into two Z bosons each of which subsequently decays into two muons.
Photo #: fig_03
Download

 

 

Download
Higgs boson decaying into two photons.
Photo #: fig_02
Download

 

 

Download
Higgs boson decaying into two W bosons.
Photo #: fig_05a
Download

 

 

Download
Higgs boson decaying into two τs.
Photo #: fig_12b

ATLAS Higgs Animated Mass Plots

Time lapse showing how we discovered the Higgs boson.

ATLAS plots
Higgs boson decaying into four leptons
ATLAS plots
Higgs boson decaying into two photons
ATLAS plots
Higgs boson decaying into two W bosons
Download

 

 

Download
Higgs boson decaying into four leptons.
Photo #: 4l-FixedScale-NoMuProf2
Download

 

 

Download
Higgs boson decaying into two photons.
Photo #: Hgg-FixedScale-Short2
Download

 

 

Download
Higgs boson decaying into two W bosons.
Photo #: WW-FixedScale
Download

 

 

Download
Higgs boson decaying into two W bosons, where one W decays into two jets (yellow cones) and the other one into a muon (red line) and a muon neutrino (yellow dashed line).
Photo #: vp1_HWW_run191933_ev44097939
Download

 

 

Download
Higgs boson decaying into two τs, each of which subsequently decay into either an electron (blue line) or a muon (red line).
Photo #: vp1_Htautau_1muon1electron_run204153_evt35369265

ATLAS Higgs Spin Plot

One example of evidence that the discovered boson is indeed a Higgs boson, which is expected to have spin J=0 and parity P+. The properties of the new particle, as well as the ways it interacts with other particles, were found to be well-matched with those of a Higgs boson.

ATLAS plots
One example illustrating that the data look more like a spin-0 particle (like a Higgs boson) than one with a different spin (spin-2).
Download

 

 

Download
One example illustrating that the data look more like a spin-0 particle (like a Higgs boson) than one with a different spin (spin-2).
Photo #: figaux_12

More ATLAS Higgs Results

All ATLAS Higgs results here.

Explanation of the ATLAS Higgs boson exclusion plots here.

ATLAS Higgs Poster

Poster targeted to general public, explaining the Brout-Englert-Higgs mechanism and why it is important. It also explains the role of the Higgs Boson, how we look for it, the journey of the discovery and what comes after the discovery. Available in English and French (Size A0).

ATLAS Higgs poster (English)
Dimensions: 841mm × 1189mm

PDF Version

ATLAS Higgs poster (French)
Dimensions: 841mm × 1189mm

PDF Version

About the ATLAS Experiment

The ATLAS experiment: [What is ATLAS] [ATLAS Photos] [ATLAS videos] [ATLAS Logos]

The ATLAS detector: [Description] [Photos]

Follow ATLAS

ATLAS links: [ATLAS Home Page] [ATLAS Blog]

ATLAS on social media: [Twitter] [Google +] [Facebook] [YouTube]

Contact us: [Contact Form] [Press]

About the Higgs Boson

What is the Higgs boson and why is it important?