D. Bortoletto 1 16/June/2014D. Bortoletto Final states and tool strategies Develop analysis framework and tools for specific final states allowing measurements of the Higgs, other SM phenomena, and sensitivity to new physics Two examples of a successful strategy HZZ2l2 l + l - +MET at the CMS ZH2b2 bb + MET at CDF Both modes have: High Impact Discovery potential Cover a variety of physics (SM, Higgs, BSM) D. Bortoletto 2 16/June/2014 HZZ2l2 HZZ4l golden mode for Higgs studies HZZ2l2 benefits aboutone order of magnitude large x BR (Purdue, Brussels, CERN, Northeastern) D. Bortoletto 3 Jakub Zablocki Petra Merkel Daniele Benedetti Challenge: backgrounds (Z+Jets, tt, single t, WZ, ZZ, WW) 16/June/2014 HZZ2l2 D. Bortoletto 4 Analysis optimized separately for Gluon Fusion (0+1 jets) and VBF (2 jets) Two variables chosen for final selection MET and Transverse Mass of Higgs (MT) 16/June/2014 High Mass Higgs D. Bortoletto 5 CMS Legacy combination ongoing for ICHEP (Merkel editor) HZZ2l2 yields best limits above 500 GeV also in the legacy paper 16/June/2014 Searches for Narrow width heavy scalar Electroweak Singlet partner Consider: Introduce BR to new states : Br new ( i.e., H = new heavy Higgs H hh where, h(126)) Define coupling for h(126) and H as C 2 and C 2 h(126) signal strength = C 2 Unitarity c 2 +c 2 =1 Heavy Higgs signal strength and width scale as: = C 2 (1-BR new ) =(C 2 /(1 BRnew))xSM Combine ggF and VBF results assuming SM ratio D. Bortoletto 6 Also scanned BR new 0 cases: limit on C gets weaker with Br new >0 Bowen, Cui, Wells,: arxiv:hep-ph/ v1 16/June/2014 Run 2 data necessary to extend reach to multi-TeV bosons. Invisible Higgs Decay CMS: combination of Z(ll)+ MET, Z(bb)+MET and VBF + MET searches yields Observed (expected) B(Hinv)/ SM 2m Z ] N. Kauer and G. Passarino, JHEP 08 (2012) 116 Threshold effects at 2m z and 2m t 16/June/2014 For m ZZ > 2m Z (m ZZ - m H ) >> H Width HZZ2l2 m T > 350 GeV and E T,miss > 100 GeV (2l2).GeV D. Bortoletto 9 Combined observed (expected) limit / SM < % CL < 22 (33) 95% CL = ( ) MeV N ( H = SM )N ( H =10x SM ) Observed 93.2 7.891 CDF bb + MET D. Bortoletto 10 First measurement of Single top (K. Potamianos, Purdue) First measurement of single top in the s- channel production (Cremonesi, Oxford) Searches for new physics in tt+MET, searches for new physics with Monotop final states, and SUSY (sbottom, stop searches) Observed significance 3.0 at m H = 125 GeV/c 2 HIGGS Veszpremi Apresyan Potamianos Liu BACKUP 16/June/2014D. Bortoletto 11 Invisible Higgs decays D. Bortoletto 12 Look for decays of Higgs boson to weakly interacting particles B(Hinv) using VBF and ZH production. Observed (expected)CMS B(Hinv) at 125 CL< 0.75 (0.91) 16/June/2014 Searches in tt + MET D. Bortoletto 13 Exclude the fourth generation exotic quarks T up to 400 GeV for m X < 70 GeV Search for a fourth generation exotic T which couples to a new dark particle X in events with at least 5 jets + MET 16/June/2014 Constraints Higgs boson Width from Off-shell Production D. Bortoletto 14 Off-shell H* VV (V = W, Z) enhances the H(126) cross-section at high mass [ ~8% of HZZ) found in m ZZ > 2m Z ] N. Kauer and G. Passarino, JHEP 08 (2012) /June/2014 Results for SM-like Higgs D. Bortoletto 15 VBF ggH Combination Expected: 254 898 GeV (Shape) Observed: 248 930 GeV (Shape) 16/June/2014 16 Total width: interferometry D. Bortoletto Define If is known r can be determined. Use from H ZZ 4l Expected Observed Challenges: Interference gg ZZ (gg2VV/MCFM ) Effect in VBF 10% at high mass (assume F = V, PHANTOM) Fit where P are MC- or data-derived templates 16/June/2014 Direct and indirect constraints Indirect constraint on BRinv can also be obtained from global fit of measured decay modes. Fixing unmeasured modes to SM predictions and assuming k V