Future High-Energy Colliders: Theoretical Vision Juan Rojo VU Amsterdam & Theory Group, Nikhef Nikhef Topical Lectures on Future Colliders Nikhef, Amsterdam, June 2018 Juan Rojo Nikhef Topical Lectures on Future Colliders, June 2018
Lecture Schedule High-Energy Physics in the Higgs Boson Era: where do we stand? Standard Model calculations for precision phenomenology at hadron colliders Lepton colliders : ILC, CLIC, FCC-ee, …. Hadron colliders : High-Luminosity LHC, High-Energy LHC, FCC-hh,… Lepton-hadron colliders : EIC, LHeC, FCC-eh, ….. The cosmic connection : neutrino telescopes, cosmic rays, gravitational waves Building on material in talks/lectures from Michelangelo Mangano, Josh Ruderman, Max and Uta Klein, Matthias Neubert, …, as well as in the various CDRs / Yellow Reports (apologies for any missing references) 2 Juan Rojo Nikhef Topical Lectures on Future Colliders, June 2018
High-energy physics in the Higgs Boson era 3 Juan Rojo Nikhef Topical Lectures on Future Colliders, June 2018
Outstanding questions in Particle Physics The Higgs boson 10 17 GeV (Planck scale) Huge gap, 10 17 , between Higgs and Plank scales With radiative corrections, Elementary or composite ? Additional Higgs the natural value of the bosons? Higgs mass is Planck scale Coupling to Dark Matter ? Role in cosmological 125 GeV (Higgs mass) phase transitions? 1 GeV (Proton mass) Is the vacuum state of the Universe stable? Degrassi et al 12 4 Juan Rojo Nikhef Topical Lectures on Future Colliders, June 2018
Outstanding questions in Particle Physics The Higgs boson Dark Matter Huge gap, 10 17 , between Higgs and Plank scales Weakly interacting massive particles ? Sterile Elementary or composite ? Additional Higgs neutrinos? Extremely light particles (axions)? bosons? Interactions with Standard Model particles? Coupling to Dark Matter ? Role in cosmological What is the structure of the Dark Sector ? Is phase transitions? Dark Matter self-interacting? Is the vacuum state of the Universe stable? 5 Juan Rojo Nikhef Topical Lectures on Future Colliders, June 2018
Outstanding questions in Particle Physics The Higgs boson Dark Matter Huge gap, 10 17 , between Higgs and Plank scales Weakly interacting massive particles ? Sterile Elementary or composite ? Additional Higgs neutrinos? Extremely light particles (axions)? bosons? Interactions with Standard Model particles? Coupling to Dark Matter ? Role in cosmological What is the structure of the Dark Sector ? Is phase transitions? Dark Matter self-interacting? Is the vacuum state of the Universe stable? Quarks and leptons Why three families? Can we explain masses and mixings ? Origin of Matter-Antimatter asymmetry in the Universe? Are neutrinos Majorana or Dirac ? CP violation in the lepton sector? 6 Juan Rojo Nikhef Topical Lectures on Future Colliders, June 2018
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The triumph of the Standard Model Standard Model Total Production Cross Section Measurements Status: March 2018 σ [pb] 500 µ b − 1 10 11 ATLAS Preliminary 80 µ b − 1 Theory Run 1,2 √ s = 7,8,13 TeV LHC pp √ s = 7 TeV 10 6 Data 4.5 − 4.9 fb − 1 LHC pp √ s = 8 TeV 10 5 Data 20.2 − 20.3 fb − 1 10 4 LHC pp √ s = 13 TeV Data 3.2 − 36.1 fb − 1 10 3 10 2 total 10 1 2.0 fb − 1 VBF VH 1 t ¯ tH 10 − 1 pp t¯ t¯ tW t¯ tZ tZj t t W Z t WW H Wt WZ ZZ t -chan s -chan Extremely powerful, validated in thousands of different measurements We should be proud of it: perhaps the most successful physical theory ever formulated! 8 Juan Rojo Nikhef Topical Lectures on Future Colliders, June 2018
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