Twisted 2HDM Phenomenology

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

See the LightPseudo topic.

• ttJJ_tautau_inv_mass.eps​: bbtautau invariant mass for tt bkg to h>AA
• ttJJ_llbb_inv_mass.eps​: invariant mass plot for llbb, for all bkgrds

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!!!)

• LHE events, Root events both Zs into l+l- (50k, xsec=2.09 fb)

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!!!)

• LHE events, Root events both Zs into l+l- (50k, xsec=1.33 fb)

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

Backgrounds (two b-tags)

• ZZbbbb to come euhhhh... 40ab!
• ZZbbjj to come, not feasable with ME... BUT: ZZbbj is 30fb (pt>15,eta<2.5 and dR>0.4 on all jets), so ZZbbjj is probably negligible.

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)

• ​LHE events, ​Root events (200k, xsec=268fb)

Backgrounds (one b-tag)

• Zj to come -> hopeless
• Zb
• Zbb (where b's are closed together)

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)

• ​LHE events, ​Root events (~100k, xsec=3,1fb)

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

• l+l- tau+ tau-
• l+l- l+l-

• ​LHE events, ​Root events (~50k, xsec=34,5fb)

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!!!)

• LHE events, Root events W+ into jj, w- into l-vl (e,mu) and tau>e,mu (20k, xsec=5.2 fb)
• LHE events, Root events W- into jj, w+ into l+vl (e,mu) and tau>e,mu (20k, xsec=5.2 fb)

Background

• ttl+l- (104fb with only a cut of 5 GeV for m_ll, to avoid gamma divergence)
• LHE events, Root events ttl+l- (l incl tau), with t going to (w+>jj)b and tx going to (w->l-vl)b (l=e,mu), tau's decayed to e, mu (50k, 10.5fb)
• LHE events, Root events ttl+l- (l incl tau), with t going to (w+>lvl)b (l=e,mu) and tx going to (w->jj)b, tau's decayed to e, mu (50k,10.5fb)
• wl+l-jj, l includes tau's, (pt>20 for jets, >10 for leptons, eta jets & leptons < 2.5, dR for jj, jl and ll >0.4), w is going to e or mu
• LHE events, Root events for l=tau, with tau decay into leptons (100k, xsec=8.2fb)
• LHE events, Root events for l=e,mu (100k, xsec=127fb)
• Same as previous, but w/o pt>10 and mll>5 instead (only e and mu) : LHE events, Root events for l=e,mu (20k, xsec=157fb)

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)

• LHE Events,Root Events (10k) for w+>l+vl and w->jj, tau in l vl, xsec=11.5 fb
• LHE Events,Root Events (7.7k) for w->l-vl and w+>jj, tau in l vl, xsec=11.5 fb

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}

• LHE events, Root events (~15k) for w+>l+vl and w->jj, xsec=11.2 fb
• LHE events, Root events (~15k) for w->l-vl and w+>jj, xsec=11.2 fb

Background is ttll, see WAWA

Hopeless signals with $A^{0\trightarrow bb$}

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!!!)

• LHE events, Root events both Ws into l,vl (100k, xsec=56.1 fb)

Background (three b-tags)

• tt -> hopeless

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!!!)

• LHE events, Root events both Ws into l,vl (100k, xsec=36.1 fb)

Background (three b-tags)

• ttbb -> maybe, only 3pb before W decay (cuts on extra b's only, pt>15, eta<2.5, dR>0.2), ​LHE Events,​Root events both Ws into l,vl (67k, xsec=143 fb)
• ttjj, one mistag... At the end, hopeless

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)}

• ​LHE events, ​Root events (~100k) for w+>l+vl and w->jj, xsec=189.1 fb
• LHE events, Root events (~100k) for w->l-vl and w+>jj, xsec=189.2 fb

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)}

• LHE Events,Root Events (100k) for w+>l+vl and w->jj, xsec=22.2 fb
• LHE Events,Root Events (~90k) for w->l-vl and w+>jj, xsec=22.2 fb

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)}

• LHE Events,Root Events (56k) for w+>l+vl and w->jj, xsec=363 fb
• LHE Events,Root Events (53k) for w->l-vl and w+>jj, xsec=363 fb