Higgs: 2012 data


Working sonifications of Higgs candidates from data collected in 2012:

https://soundcloud.com/h-gg-1/sets/mgg120-130-ptt-40/s-M5Cwm

https://soundcloud.com/h-gg-1/sets/categories/s-VtUij

The event properties used in the sonifications:

Invariant diphoton mass

The photons themselves are massless. But their energy and momenta combined together can give us the mass of the particle that decayed to produce them, if they were produced by the decay of a massive particle. If they were produced by the decay of a Higgs boson, then this number is a measurement of the mass of the Higgs boson, if not, then this quantity is not meaningful and can take on any value.

Diphoton opening angle: delta R

This is the angle between the two photons in radians. 1 radian =57.3 degrees.

The categories explained:

See the reference conference note from ATLAS for a proper description of the categories:

A vague description of the categories is as follows:

Categories 1-4: Unconverted photons
1: Central part of detector, low pTt (pTt = transverse momentum along the ‘thrust axis’)
2: Central part of detector, high pTt
3: Non-central, low pTt
4: Non-central, high pTt

Categories 5-9: Converted photons
5: Central part of detector, low pTt
6: Central part of detector, high pTt
7: Non-central, low pTt
8: Non-central, high pTt
9: Transition region, any pTt

Categories 10-11: Selection for an additional vector boson which decays to quarks
10: Loose requirement of W/Z boson candidate based on dijet mass
11: Tight requirement of W/Z boson candidate based on dijet mass

Category 12: Selection for sensitivity to the production mode where the Higgs is produced by fusion of Ws (“vector boson fusion”):
12: Low mass dijet

Categories 13-14: Selection for an additional vector boson which decays to leptons
13: Missing energy (neutrino(s))
14: High pT lepton

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