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pdf png a) pdf b) pdf c) pdf d) pdf e) pdf f) pdf |
Figure 1: Background model fit to the mgg distribution for the five event classes, together with a simulated signal (mH=120 GeV). The magnitude of the simulated signal is what would be expected if its cross section were twice the SM expectation. The sum of the event classes together with the sum of the five fits is also shown. The individual graphs (available as separate files) are as follows: a) The sum of the five event classes, b) the dijet-tagged class, c) both photons in the barrel, R9min > 0.94, d) both photons in the barrel, R9min < 0.94, e) at least one photon in the endcaps, R9min > 0.94, f) at least one photon in the endcaps, R9min < 0.94. |
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pdf png | Figure 2a: Exclusion limit on the cross section of a SM Higgs boson decaying into two photons as a function of the boson mass. |
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pdf png | Figure 2b: Exclusion limit relative to the SM Higgs boson cross section, where the theoretical uncertainties on the cross section have been included in the limit setting. On popular demand: the observed and expected limit at mH = 125 GeV are 3.14 and 1.43, respectively. |
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pdf png | Figure 3: The local p-value as a function of Higgs boson mass, calculated in the asymptotic approximation. The point at 124 GeV shows the value obtained with a pseudo-data ensemble. |
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pdf png | Figure 4: The best fit signal strength, in terms of the standard model Higgs boson cross section, for the combined fit to the five classes (vertical line) and for the individual contributing classes (points) for the hypothesis of a SM Higgs boson mass of 124 GeV. The band corresponds to +-1 sigma uncertainties on the overall value. The horizontal bars indicate +-1 sigma uncertainties on the values for individual classes. |
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pdf png | Fraction of Higgs boson vertices found within 10 mm of their true location, for a Monte Carlo signal sample (mH = 120 GeV), as a function of the Higgs boson transverse momentum. The distribution of the number of interactions per bunch crossing (nPU) in the Monte Carlo is adjusted to be the same as in the data by weighting the events. |
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pdf png | Distribution of the number of reconstructed vertices (using the deterministic annealing algorithm) for events with a Z decaying to 2 muons in the data (points) and MC after having applied the reweighting on the number of simulated in-time pile-up events (filled histogram). The distributions are shown for 2 running periods: 2011A - up until late August, during which time the average instantaneous luminosity and consequent pileup was lower, and the time after that, 2001B, when the instantaneous luminosity was higher. |
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pdf png | |
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pdf png | Diphoton mass distribution for data (data points), and Monte Carlo simulation of SM processes which constitute the background to the search (histograms). A simulated signal for a Higgs boson with a mass of 120 GeV is shown by the red outline histogram. The magnitude of the signal is what would be expected if its cross section were 10 times the SM expectation.The shaded band represents the theoretical (k-factor) uncertainty on the the MC prediction. Note that in the analysis the background is evaluated from a fit to the data without reference to the MC simulation. |
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pdf png | Invariant mass distribution of electron pairs from Z boson decay: where (top) both electrons are in the central barrel and have R9>0.94, and (below) where both electrons have R9>0.94, but one electron is in the central barrel and and the other is in the endcap. The red histogram is Monte Carlo, and the black empty histogram is the same Monte Carlo but after smearing of the energies to match the data. |
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pdf png | Photon selection efficiency for mH=120 GeV as a function of as a function of pT, for each of the four photon categories. |
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pdf png | Photon selection efficiency for mH=120 GeV as a function of as a function of pseudorapidity, for each of the four photon categories. |
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pdf png | Efficiency x Acceptance as a function of mass for selected photons (all event classes combined). The band indicates 1 sigma systematic error. |
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png | 3D display of event 625786854 in run 177201. A dijet-tagged event with diphoton mass 121.9 GeV, dijet mass 1460 GeV, photon transverse momenta 193.9 and 78.0 GeV, and jet transverse energies 288.8 and 189.1 GeV. The photon pseudorapidities are -0.405 and 0.037, and the jet pseudorapidities are -2.022 and 1.860. |
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I | Attachment | History | Action | Size | Date | Who | Comment |
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BestFit.pdf | r1 | manage | 31.2 K | 2012-02-09 - 17:26 | ChrisSeez | |
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BestFit.png | r1 | manage | 25.0 K | 2012-02-09 - 17:25 | ChrisSeez | |
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BkgFit.pdf | r1 | manage | 157.2 K | 2012-02-09 - 17:25 | ChrisSeez | |
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BkgFit.png | r1 | manage | 65.0 K | 2012-02-09 - 17:24 | ChrisSeez | |
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Hgg_vtxIdEfficiencyMVA_vs_bosonPt_Run2011.pdf | r1 | manage | 17.4 K | 2012-02-10 - 08:54 | ChrisSeez | |
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Hgg_vtxIdEfficiencyMVA_vs_bosonPt_Run2011.png | r1 | manage | 107.4 K | 2012-02-10 - 08:55 | ChrisSeez | |
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Limit_GL_combXSxBR.pdf | r1 | manage | 23.7 K | 2012-02-09 - 17:25 | ChrisSeez | |
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Limit_GL_combXSxBR.png | r1 | manage | 76.8 K | 2012-02-09 - 17:24 | ChrisSeez | |
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Limit_GL_fullCLs.pdf | r1 | manage | 22.1 K | 2012-02-09 - 17:25 | ChrisSeez | |
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Limit_GL_fullCLs.png | r1 | manage | 57.8 K | 2012-02-09 - 17:24 | ChrisSeez | |
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Limit_GL_pvalue.pdf | r1 | manage | 18.2 K | 2012-02-09 - 17:26 | ChrisSeez | |
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Limit_GL_pvalue.png | r1 | manage | 56.1 K | 2012-02-09 - 17:24 | ChrisSeez | |
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MD_vtx_2011A.pdf | r1 | manage | 25.9 K | 2012-02-10 - 08:56 | ChrisSeez | |
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MD_vtx_2011A.png | r1 | manage | 34.0 K | 2012-02-10 - 08:56 | ChrisSeez | |
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MD_vtx_2011B.pdf | r1 | manage | 25.2 K | 2012-02-10 - 08:56 | ChrisSeez | |
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MD_vtx_2011B.png | r1 | manage | 32.9 K | 2012-02-10 - 08:56 | ChrisSeez | |
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Table1.pdf | r1 | manage | 60.1 K | 2012-02-18 - 13:43 | ChrisSeez | |
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Table1.png | r1 | manage | 58.8 K | 2012-02-18 - 13:44 | ChrisSeez | |
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Table15.pdf | r1 | manage | 42.7 K | 2012-02-18 - 13:45 | ChrisSeez | |
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Table15.png | r1 | manage | 43.4 K | 2012-02-18 - 13:45 | ChrisSeez | |
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Table2.pdf | r1 | manage | 77.2 K | 2012-02-18 - 13:44 | ChrisSeez | |
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Table2.png | r1 | manage | 72.1 K | 2012-02-18 - 13:44 | ChrisSeez | |
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Table3.pdf | r1 | manage | 199.9 K | 2012-02-18 - 13:44 | ChrisSeez | |
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Table3.png | r1 | manage | 200.4 K | 2012-02-18 - 13:45 | ChrisSeez | |
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effAcc_vs_mass.pdf | r1 | manage | 14.4 K | 2012-02-10 - 09:03 | ChrisSeez | |
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effAcc_vs_mass.png | r1 | manage | 81.1 K | 2012-02-10 - 09:03 | ChrisSeez | |
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eff_eta.pdf | r1 | manage | 19.5 K | 2012-02-10 - 09:05 | ChrisSeez | |
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eff_eta.png | r1 | manage | 107.2 K | 2012-02-10 - 09:05 | ChrisSeez | |
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eff_pt.pdf | r1 | manage | 22.4 K | 2012-02-10 - 09:05 | ChrisSeez | |
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eff_pt.png | r1 | manage | 131.4 K | 2012-02-10 - 09:05 | ChrisSeez | |
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mass.pdf | r1 | manage | 25.8 K | 2012-02-10 - 08:55 | ChrisSeez | |
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mass.png | r1 | manage | 32.8 K | 2012-02-10 - 08:55 | ChrisSeez | |
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out-abs_eta_R9_EB-Histos-9999_region_0_0.pdf | r1 | manage | 14.1 K | 2012-02-10 - 08:56 | ChrisSeez | |
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out-abs_eta_R9_EB-Histos-9999_region_0_0.png | r1 | manage | 16.6 K | 2012-02-10 - 08:57 | ChrisSeez | |
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out-abs_eta_R9_EE-Histos-9999_region_0_3.pdf | r1 | manage | 14.3 K | 2012-02-10 - 08:57 | ChrisSeez | |
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out-abs_eta_R9_EE-Histos-9999_region_0_3.png | r1 | manage | 16.7 K | 2012-02-10 - 08:57 | ChrisSeez | |
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plot0.pdf | r1 | manage | 36.4 K | 2012-02-18 - 14:42 | ChrisSeez | |
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plot1.pdf | r1 | manage | 37.0 K | 2012-02-18 - 14:41 | ChrisSeez | |
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plot2.pdf | r1 | manage | 36.9 K | 2012-02-18 - 14:42 | ChrisSeez | |
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plot3.pdf | r1 | manage | 36.3 K | 2012-02-18 - 14:42 | ChrisSeez | |
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plot4.pdf | r1 | manage | 31.0 K | 2012-02-18 - 14:41 | ChrisSeez | |
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plot_all.pdf | r1 | manage | 37.9 K | 2012-02-18 - 14:41 | ChrisSeez | |
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run177201event625786854.png | r1 | manage | 326.6 K | 2012-02-18 - 10:32 | ChrisSeez |