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IFAE07

IFAE07. VBS and gluon-gluon fusion to test EWSB at the LHC. E. Accomando INFN and Università di Torino. LNF. the most deep mystery in QFT. The EW symmetry breaking. TIM. 2007 43th birthday of the Higgs.

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IFAE07

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  1. IFAE07 VBS and gluon-gluon fusion to test EWSB at the LHC E. Accomando INFN and Università di Torino

  2. LNF the most deep mystery in QFT The EW symmetry breaking

  3. TIM 2007 43th birthday of the Higgs Returning from the Cairngorns scottish mountains to my lab, I had my „one big idea“ (1964)

  4. LNF still...the Higgs is a real particle or a way of thinking? A possible working hypotesis: a Higgsless scenario SM is lost SUSY as well

  5. LNF Where do we get clues on EWSB? Looking at the same place w/wo the Higgs Thus at the LHC

  6. LNF Where do we get clues on EWSB? VBS GGF

  7. LNF VBS at the LHC If no Higgs SM VBS violates unitarity W and Z strongly interacting at the TeV scale New Physics lies beyond the SM!

  8. LNF VBS at the LHC

  9. LNF VBS at the LHC Different ways of constructing UNITARY AMPLITUDES Common signal: increased production of WL and ZL Benchmark worst VBS scenario: The LET Model

  10. LNF VBS at the LHC Extracting VBS from six-fermion final states Full Amplitude = +

  11. LNF VBS at the LHC Going from Exp. to Th. needs a complete Event Generator now extended in the newPHANTOM code [Ballestrero, Belhouari, Bevilacqua, Maina] Outcome: fully representative Event Sample where detection startegies can be studied

  12. LNF LET Model vs SM with PHASE how to extract the VBS signal? Barger suggestion [`94] (VBS)=(no Higgs)-(light Higgs)

  13. LNF PHASE vs PYTHIA All O(1000) processes: q1q2 q3q4q5q6 Pythia heavily underestimates the background

  14. LNF LET Model vs SM with PHASE With CMS Torino [Mariotti and Bolognesi]

  15. LNF Neural Network Winning strategy to Strongly Interacting VBS in the benchmark worst scenario

  16. LNF GGF: a new channel to probe EWSB gi~ s gi~s gi + gh~ const. Unitarity violation in absence of Higgs

  17. LNF GGF: a new channel to probe EWSB Very preliminary pp ee+- Minv(e) LET SM LET vs SM GeV

  18. LNF GGF: a new channel to probe EWSB Very preliminary LET vs SM 100 fb-1 Significance 5 Evidence already in the first year of running 3 10 fb-1 GeV

  19. LNF Conclusions • TeV-scale physics will be probed at the LHC • a window to understand the EWSB dynamics • and reveal the underlying theory Testing ground VBS: the gold-plated channel GGF: a new silver-plated channel Great improvement from simultaneous analyses

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