Charged Higgs boson searches

This page contains approved plots and results in the order as they appear in the CSC note. Only the CSC note contains all the relevant information and should thus be consulted if one of the plots is used.

Figure 1: tt->bH⁺ bW->bτ(had)νbqq: Likelihood distribution (a) and transverse mass (b) for an H⁺ mass of 130 GeV and the corresponding background, stacked and normalized to the cross-section with tanβ=20. The hatched area shows what would be expected from a Standard Model only scenario. A cut at 0.6 is made on the likelihood and at 65 GeV on the transverse mass.

Figure 2: tt->bH⁺bW->bτ(had)νbqq: Discovery (left) and exclusion contour (right) for Scenario B (m_h^max). Systematic and statistical uncertainties are included. The systematic uncertainty is assumed to be 10% for the background, and 24% for the signal (see Sections 5.2 and 5.1). The lines indicate a 5σ significance for the discovery and a 95% CL for the exclusion contour.

Figure 3: tt->bH⁺bW->bτ(lep)νbqq: (a) cosφ distribution, (b) W transverse mass distribution, for signal and background, after selection cuts, for charged Higgs boson masses of 90 and 150 GeV.

Figure 4: tt->bH⁺bW->bτ(lep)νbqq: m_h distribution, after selection cuts, for m_T^H+=90, 120, and 150 GeV. The dotted line represents the nominal simulated mass.

Figure 5: tt->bH⁺bW->bτ(lep)νbqq: Transverse mass differential cross-section for signal and background, for tanβ=20, and for the hypothesis of (a) W, and (b) H⁺.

Figure 6: tt->bH⁺bW->bτ(lep)νbqq: Discovery (left) and exclusion contour (right) for Scenario B (m_h^max). Systematic and statistical uncertainties are included. The systematic uncertainty is assumed to be 10% for the background, and 35% for the signal (see Sections 5.2 and 5.1). The lines indicate a 5σ significance for the discovery and a 95% CL for the exclusion contour.

Figure 7: tt->bH⁺bW->bτ(had)νblν: (a) Multiplicity of jets and (b) τ jet transverse momentum (p_T^τ).

Figure 8: tt->bH⁺bW->bτ(had)νblν: E_T^miss differential cross-section after all cuts for tanβ=20. The signal contributions for the different mass hypothesis are individually stacked on top of the background distribution.

Figure 9: tt->bH⁺bW->bτ(had)νblν: Discovery (left) and exclusion contour (right) for Scenario B (m_h^max). Systematic and statistical uncertainties are included. The systematic uncertainty is assumed to be 10% for the background, and 41% for the signal (see Sections 5.2 and 5.1). The lines indicate a 5σ significance for the discovery and a 95% CL for the exclusion contour.

Figure 10: gg/gb -> t[b]H⁺ -> bqq[b]τ(had)ν: Probability density functions for tt and two signal mass points. The plots show, from the upper left to the lower right, log(p^τ_T), log (E_T^miss), and 1-cos(Δφ).

Figure 11: gg/gb -> t[b]H⁺ -> bqq[b]τ(had)ν: Likelihood distributions. The areas are normalized to unity. The background likelihood for 170 GeV does not peak at 0 because of the trigger selection (and to a smaller degree the less stringent preselection cuts for the PDF determination) which already removes most of the events in the first bins.

Figure 12: gg/gb -> t[b]H⁺ -> bqq[b]τ(had)ν: H⁺ transverse mass distributions for three signal mass points and the corresponding background for tanβ=35. The signal events are stacked on top of the background events.

Figure 13: gg/gb -> t[b]H⁺ -> bqq[b]τ(had)ν: Discovery (left) and exclusion contour (right) for Scenario B (m_h^max). Systematic and statistical uncertainties are included. The systematic uncertainty is assumed to be 10% for the background, and 44% for the signal (see Sections 5.2 and 5.1). The lines indicate a 5σ significance for the discovery and a 95% CL for the exclusion contour.

Figure 14: gg/gb -> t[b]H⁺ -> t[b]tb -> bW [b]bW b -> blν[b]bqqb: Reconstructed H⁺ mass. The value of tanβ has been chosen such that the pure statistical significance results in a value of 5.

Figure 15: tt -> bτ(lep)νbqq: Left: W -> τ(lep)ν transverse mass, both for the real and the scaled tt events. Right: The corresponding bin-by-bin ratio. The gray band represents +/-10% around a ratio of 1.

Figure 16: tt -> bτ(had)νbqq: Left: t -> bτ(had)ν momentum, both for the real and the scaled tt events. Right: The corresponding bin-by-bin ratio. The gray band represents +/-10% around a ratio of 1.

Figure 17: Scenario A: Combined Results. Left: Discovery contour, Right: Exclusion contour. Systematic and statistical uncertainties are included.

Figure 18: Scenario B (m_h^max): Combined Results. Left: Discovery contour, Right: Exclusion contour. Systematic and statistical uncertainties are included.

Figure 19: Scenario B (m_h^max): Combined Results. Left: Discovery contour, Right: Exclusion contour. Statistical errors arising from simulation statistics are neglected.

Figure 20: Model-independent: Combined light H⁺ results in the (m_H⁺, BR(t -> H⁺ b))-plane. Left: Discovery contour, Right: Exclusion contour. Systematic uncertainties and statistical uncertainties are included. BR(H⁺ -> τν) = 1 is assumed.

Figure 21: Model-independent: Heavy H⁺ results in the (m_H⁺, σ )-plane. Left: Discovery contour, Right: Exclusion contour. Systematic uncertainties and statistical uncertainties are included.

Caption: tt -> bτ(lep)νbqq: Left: Lepton transverse momentum, both for the real and the scaled tt events. Right: The corresponding bin-by-bin ratio. The gray band represents +/-10% around a ratio of 1.

Caption: tt -> bτ(had)νblν: Left: Missing transverse energy, both for the real and the scaled t t events. Right: The corresponding bin-by-bin ratio. The gray band represents +/-10% around a ratio of 1.