Changes between Version 9 and Version 10 of Korea2017-02-CMS-EXO-16-012
- Timestamp:
- Aug 16, 2017, 11:18:18 AM (8 years ago)
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Korea2017-02-CMS-EXO-16-012
v9 v10 8 8 == 1. Analysis summary == 9 9 10 Mono-Higgs 10 Mono-Higgs. 11 12 A search for dark matter is performed using events with large missing transverse momentum and a Higgs boson decaying either to a pair of bottom quarks or to a pair of photons. We are only interested in the photon pair final state. This analysis searches for excesses over the background-only prediction in events with large pTmiss and a diphoton system that has a reconstructed invariant mass close to the mass of the SM-like Higgs boson h. 11 13 12 14 == 2. Analysis global information == … … 25 27 === 3.1 Trigger selection === 26 28 29 Diphoton triggers with asymmetric transverse energy thresholds (30/18 GeV) are used to select events with the diphoton invariant mass above 95 GeV. The trigger selection uses a very loose photon identification based on the cluster shower shape and loose isolation requirements and a requirement that the ratio of hadronic-to-electromagnetic energy (H/E) of the photon candidates is less than 0.1. 30 27 31 PS: This part cannot usually be described by the fast-simulation of detector. 28 32 29 33 === 3.2 Object definition === 30 34 31 Explained here how the objects are defined. 35 * Photons: Two categories (the barrel–endcap transition region of 1.44 < |eta| < 1.57, where photon reconstruction is not optimal is excluded) 36 * Photons with |eta| < 1.44 37 * Photons with 1.566 < |eta| < 2.5 32 38 33 39 === 3.3 Cut-flow chart === … … 64 70 65 71 == 6. Questions / issues == 66