ATLAS searches for MSSM Higgs bosons decaying into SUSY cascades

This page contains approved plots and results as they appear in the ATL-PHYS-PUB-2009-079 note. Only the note contains all the relevant information and should thus be consulted if one of the plots is used. Click on an image to download in eps format.

Figure 1: Example of

decay ( $A/H\rightarrow{}\tilde{\chi{}}^{0}_{2}\tilde{\chi{}}^{0}_{2}$ ) with final state containing four leptons and undetectable particles.

Figure 2: Results at the generator level for Set1, as a function of

at tanβ = 8, 10, 20, 30. On the left, the Higgs boson

production cross section $\sigma$ . On the right, the effective four lepton branching ratio, Br x ε.

Figure 3: Results at the generator level for Set1, as a function of $m_{A}$ , at tanβ = 8, 10, 20, 30: the production cross section $\sigma$ times the four lepton effective branching ratio Br x $\epsilon$ for A events (top left);

events (top right); ( $\tilde{q}$ , $\tilde{g}$ ), ( $\tilde{\ell}$ , $\tilde{\nu}$ ),( $\tilde{\chi}\tilde{\chi}$ , $\tilde{q}$ / $\tilde{g}\tilde{\chi}$ ) events (bottom left); $tH^{\pm}$ events (bottom right).

Figure 4: Results at the generator level for Set2, as a function of $m_{A}$ , at tanβ = 5, 15, 25, 35, 45: the production cross section σ times the four lepton effective branching ratio Br x ε for

events (left); $tH^{\pm}$ events (right).

Figure 5: Point2 selection results. Reconstructed transverse impact parameter significance, $d0/\sigma_{d0}$ , distributions after cut 1, Section 7, for muons in

(top left) and $t\bar{t}$ (top right) events; for electrons in

(bottom left) and $Zb\bar{b}$ (bottom right) events. All distributions are normalized at $\int\mathcal{L} = 300 fb^{-1}$ .

Figure 6: Point2 selection results. Reconstructed dilepton invariant mass, $M^{\ell\ell}_{inv}$ , distributions after cuts 1,2, Section 7, for

(top left),

(top right),

(bottom left) and $Zb\bar{b}$ (bottom right) events. All distributions are normalized at $\int\mathcal{L} = 300 fb^{-1}$ . Bin width = 3 GeV.

Figure 7: Point2 selection results. Reconstructed transverse missing energy, $E^{miss}_{T}$ , after cuts 1,2,3, Section 7, for

(top left),

(top right), $Zb\bar{b}$ (bottom left), ( $\tilde{q},\tilde{g}$ ) (bottom right) events. All distributions are normalized at $\int\mathcal{L} = 300 fb^{-1}$ . Bin width = 1.5 GeV.

Figure 8: Point2 selection results. Reconstructed lepton transverse momentum ( $p_{T}^{\mu},p_{T}^{e}$ ) distributions after cuts1,2,3,4, Section 7, for muons in

(top left) and $t\bar{t}$ (top right) events; for electrons in

(bottom left) and ( $\tilde{q},\tilde{g}$ ) events (bottom right) events. All distributions are normalized at $\int\mathcal{L} = 300 fb^{-1}$ . Bin width = 1.5 GeV.

Figure 9: Point2 selection results. Reconstructed number of jets, $N^{jet}$ , distributions after cuts 1,2,3,45, Section 7, in

(top left) and ( $\tilde{q},\tilde{g}$ ) (bottom right) events. All distributions are normalized at $\int\mathcal{L} = 300 fb^{-1}$ . Bin width = 1 GeV.

Figure 10: Set1. Discovery potential for a neutral Higgs boson

of mass

decaying to four leptons accompanied by missing transverse energy, as a function of

: contours are drawn for a search significance $\frac{S}{\sqrt{B}}=5$ (left) and $\frac{S}{\sqrt{B}}=2$ (right), with an integrated luminosity of $\int\mathcal{L} = 300 fb^{-1}$ (top) and $100 fb^{-1}$ (bottom). No discovery region is found for this latter luminosity.

is the number of signal events,

is the number of background events.

Figure 11: Set2. Discovery potential for a neutral Higgs boson

of mass

decaying to four leptons accompanied by missing transverse energy, as a function of

is the number of signal events,

is the number of background events.

Figure 12: Set2 including $H^{\pm}$ . Discovery potential for a Higgs boson $A/H/H^{\pm}$ of mass

decaying to four leptons accompanied by missing transverse energy, as a function of

is the number of signal events,

is the number of background events.

Figure 13: SetA, SetB. Discovery potential for a Higgs boson

of mass

decaying to four leptons accompanied by missing transverse energy, as a function of

, for mSUGRA SetA (right) and SetB (left): values of the search significance, $\frac{S}{\sqrt{B}}$ , with an integrated luminosity of $\int\mathcal{L} = 300 fb^{-1}$ (blue bulet) and $100 fb^{-1}$ (red triangle). The blue and green lines correspond to a search significance $\frac{S}{\sqrt{B}}=5$ and $\frac{S}{\sqrt{B}}=2$ , respectively.

is the number of signal events,

is the number of background events.

Major updates:
-- CalebLampen - 29-May-2010

Responsible: CalebLeeParnellLampenExCern
Last reviewed by: Never reviewed