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Twisted 2HDM Phenomenology

Signal with $h^0\rightarrow A^0 A^0$

See the LightPseudo topic.

Signal with $H^0\rightarrow Z A^0$

Process $gg\rightarrow h^0\rightarrow H^0 H^0 \rightarrow Z A^0 Z A^0 \rightarrow l^+ l^- l^+ l^- bbbb$

Signal (BP1, only eta<2.5 for b's), xsec before Z decays 463fb (already rescaled to best NLO with 1121/388!!!)

Backgrounds:

Hopeless because too low pt ? Discuss how to group b jets, give xsec of main bkgrd ZZbb (0.3 fb with loose cuts on b's)

Plots : delta R (also BP2), pT 3rd and 4th jets (also for BP2), ptb34_zaza_bp1_bp2.eps?

Signal (BP2, only eta<2.5 for b's), xsec before Z decays 314fb (already rescaled to best NLO with 802/120!!!)

If additional cuts on b's (pt>15,eta<2.5 and dR>0.4), cross section is 157,7fb.

Backgrounds (two b-tags)

Plots: mH0's and mh0 (from Arnaud's thesis)

Process $gg\rightarrow bb H^0\rightarrow bb Z A^0 \rightarrow l^+ l^-  bbbb$

Signal (BP3, no pT, eta cuts on b's, pt>10, eta<2.5 and dR>0.4 for leptons)

Backgrounds (one b-tag)

Plot: delta R (to show that b's are colinear)

Process $gg\rightarrow bb H^0\rightarrow bb Z A^0 \rightarrow l^+ l^-  \tau\tau bb$ with taus in leptons

Signal (BP3, pT cuts on all leptons pt>20, eta<2.5)

Backgrounds (one inclusive sample), same cuts as signal, l+l- forced from Z

Plots: inv mass and delta R for leptons with
m_inv-mZ bigger, mH

Signal with $H^\pm\rightarrow W^\pm A^0$

Process $gg\rightarrow h^0\rightarrow H^+ H^- \rightarrow W^+ A^0 W^- A^0 \rightarrow l^+ \nu_l jj \tau^+\tau^-bb$

Signal (BP1, WARNING no cuts at all), xsec before W decays 304fb (already rescaled to best NLO with 1121/388!!!)

Background

Process $pp\rightarrow tH^\pm (b) \rightarrow W^- b W^+ A^0 (b)  \rightarrow W^+ W^- b\tau^+\tau^-(b) \rightarrow jj l^\pm \nu_l \tau^+\tau^-b(b)$

Signal (BP3, no cut at all), xsec total before w and tau decay 641 fb (no cuts on w decay products)

Background

Regarding the presence of at least on taggable b-jet, main bkg is ttl+l-, see WAWA

Process $gg\rightarrow tt \rightarrow W^\pm H^\mp bb \rightarrow W^+ W^- A^0 bb \rightarrow W^+ W^- \tau\tau bb \rightarrow jj l^\pm \nu_l \tau\tau bb$

Signal (BP1, no cut at all), xsec total before w+ and tau's decay 631 fb

Background is ttll, see WAWA

Hopeless signals with
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Process $gg\rightarrow h^0\rightarrow H^+ H^- \rightarrow W^+ A^0 W^- A^0 \rightarrow l^+ \nu_l l^- \nu_l bbbb$

Signal (BP1, WARNING no cuts on b's, not even eta!), xsec before W decays 1227fb (already rescaled to best NLO with 1121/388!!!)

Background (three b-tags)

Plot: delta R, pT 3rd and 4th jet

Signal (BP2, WARNING no cuts on b's, not even eta!), xsec before W decays 788fb (already rescaled to best NLO with 802/120!!!)

Background (three b-tags)

Plot: invariant mass

Process $gg\rightarrow tt \rightarrow W^\pm H^\mp bb \rightarrow W^+ W^- A^0 bb \rightarrow W^+ W^- bbbb \rightarrow jj l^\pm \nu_l bbbb$

Signal (BP1, pT cut at 15GeV and eta cut at 2.5 for b's), xsec total before w+ decay 1302 fb (no cuts on w decay products)

Process $pp\rightarrow tH^\pm (b) \rightarrow W^- b W^+ A^0 (b)  \rightarrow W^+ W^- bbb(b) \rightarrow jj l^\pm \nu_l bbb$

Signal (BP2, pT cut at 15GeV and eta cut at 2.5 for b's), xsec total before w+ decay 153 fb (no cuts on w decay products)

Signal (BP3, pT cut at 15GeV and eta cut at 2.5 for b's), xsec total before w+ decay 2504 fb (no cuts on w decay products)