Les Houches

This is an old revision of the document!

---

Responsible: Tevong You

Participants: Adam Falkowski, Natascia Vignaroli, Elena Venturini, Sanmay Ganguly, Giovanni Zevi, Jérémie Quevillon, Dario Buttazzo, David Marzocca, Shankha Banerjee,Biplob Bhattacherjee, Minho Son, Andrew Gilbert, Gustaaf Brooijmans, Kohsaku (Toby) Tobioka, Philippe Gras, Duc Ninh (Ninh) Le, Priscilla, Jose

4-tops (Dario, David, Sanmay, Tevong, Giovanni, Adam, Priscilla)

-Recast existing exp. bounds (Giovanni)

-Generate UFO and improve parton-level 4-top analysis (Dario, David, Giovanni, Adam)

-Showering and detector-level differential analysis + machine-learning (Sanmay, Priscilla)

-2D likelihood in k_t vs k_4t plane, with H-parameter line in this plane (Adam)

ZZ (Adam, Jeremie, Shankha, Minho, Andrew, Elena, Gustaaf, Tevong, Ninh)

-Improve ZZ analyses?

WWtj & WWcj (Toby, Natascia, Philippe, Andrew, Minho, Tevong, Sanmay, Elena)

-Background estimate

-FeynRules

-Improve on cut & count analysis

-Charm Yukawa sensitivity?

ttHZ (Shankha, Biplob, Shilpi, Tevong)

Higgs without Higgs for exotic Higgs decays (Jose, Tevong)

-k_inv in off-shell Higgs measurements

-h→Za without Higgs

CP-odd operators?

See e.g. Ref. [14]

Literature

[1] Higgs couplings without Higgs: http://arxiv.org/abs/1812.09299

[2] H parameter: http://arxiv.org/abs/1903.07725

[3] ZH differential observables: https://arxiv.org/abs/1905.02728

[4] WZ polarization measurements from ATLAS (as an example of experimental capabilities): https://atlas.web.cern.ch/Atlas/GROUPS/PHYSICS/PAPERS/STDM-2018-03/

[5] Angular differential distributions in WZ and W\gamma production: https://arxiv.org/abs/1901.04821

[6] CMS ZZ→4l anomalous couplings (w/ off-shell) https://arxiv.org/pdf/1901.00174.pdf

[7] Off-shell Higgs width in ZZ: https://arxiv.org/abs/1406.6338

[8] Constraining contact interaction with ZH production: https://arxiv.org/abs/1807.01796

[9] To generate W/Z polarised samples with MadGraph: https://twiki.cern.ch/twiki/bin/view/Main/MadgraphPolarization

[10] Rosiek SMEFT FeynRules package: https://www.fuw.edu.pl/smeft/

[11] CMS tttt: Same-sign with 137 fb-1: TOP-18-003 (http://cms-results.web.cern.ch/cms-results/public-results/preliminary-results/TOP-18-003/index.html)

[12] CMS tttt: All channels with 36 fb-1, and EFTs: https://arxiv.org/abs/1906.02805

[13] top-philic Z' and tttt: https://arxiv.org/abs/1611.05032

[14] Higgs-CP tests: https://arxiv.org/abs/1712.02350