Dark Sectors at High Energy Colliders

Dark Sectors at High Energy Colliders Yuri Gershtein David Shih Scott Thomas

Standard . Model Dark Sector Messenger Interactions Portals - (Local Operators) Standard Model Portals: D=2B  , H* H D=5/2LH D=3 Q* Q , L  L ,  D=4 QHu , G  G  , H* W H ,  

Standard . Model Dark Sector Portals Into and Out of the Dark Sector Standard Model Dark Sector Standard Model

Dark Sector Production at High Energy Colliders Indirect Production with Shared Conserved . Quantum Number Direct Production Indirect Production 2 2 Standard . Model Standard . Model Dark Sector Standard . Model Dark Sector Dark Sector » O(2) Br » O(2)  ¢ Br » O(0) Which Dark Sector States Populated – Depends on Production Portals Portal »

Dark Sector Production at High Energy Colliders Indirect Production with Shared Conserved . Quantum Number Direct Production Indirect Production Resonant Dark DY Higgs, Z Decay SUSY + R-Parity 2 2 Standard . Model Standard . Model Dark Sector Standard . Model Dark Sector Dark Sector » O(2) Br » O(2)  ¢ Br » O(0) Which Dark Sector States Populated – Depends on Production Portals Portal »

Dark Sector Decay to Standard Model If No Dark Decay Mode Open – Dark Sector State Can Decay Back to Standard Model Through Portals Guaranteed for LDSP if no Conserved Quantum # 2 Standard . Model Dark Sector All, Some, or None of the Dark Sector States May Have Prompt Decays Back to the Standard Model Very Wide Range of Possibilities Depending On: Production Portal Dark Spectrum Dark Cascade Decays Dark Showering Decay Portal

Dark Sector Decay to Standard Model Classify Dark Decay Modes According to Relevant Experimental Considerations: Standard Model Dark • Dark Object Content ¾ {Leptons, Jets, MET} – • Decay Portals (No Decay = MET) 2. Dark Object Multiplicity / Isolation - Dark Cascades and/or Dark Showering . (Confined Non-Abelian or Higgsed (Non)-Abelian Large gD) High Multiplicity Low Multiplicity Non-Isolated Object Isolated Object ( “Lepton Jets” ) ( Di-muons ) . “Difficult” “Easy” * 3. Associated Objects from Production/Decay – {Leptons, Jets, MET}

Dark Sector ¾ Abelian Gauge Symmetry Standard Model PortalsDark Sector Portals D=2 B  , H*H X  , HD*HD D > 2  Marginal SM - Dark Interactions : Photon - Dark Photon - Z Boson Mixing Higgs - Dark Higgs Mixing

Higgsed Abelian Dark Sector - Decay to Standard Model 2 Standard . Model Dark Sector Leading Decay Portals:

Higgsed Abelian Dark Sector - Decay to Standard Model Dark Photon Decay Prompt Dark Photon Branching Ratio Hadrons + Leptons

Higgsed Abelian Dark Sector - Decay to Standard Model Dark Higgs Decay

Higgsed Abelian Dark Sector - Decay to Standard Model Dark Higgs Decay Most of the D* Goes Through Hadronic Resonances

Higgsed Abelian Dark Sector - Direct Production 2 Standard . Model Dark Sector Leading Direct Production Portals: O(3/2) ¢ mX/ vSM

Higgsed Abelian Dark Sector - Direct Production Direct Dark Photon Production AssumeD SM : Resonance Search in +- DY(Background – Data) Tevatron Sensitivity for m » few GeV » 10-3

Higgsed Abelian Dark Sector - Indirect Production 2 Standard . Model Dark Sector Leading Indirect Production Portals  Two Universal Dark Portals (Focus on These Portals )

Higgsed Abelian Dark Sector - Indirect Production Z Boson  Dark Higgs + Dark Photon AssumeD SM : InclusiveIsolatedl+ l- + +- Resonance Search in Z Decays LEP: O(107) Z’s Ell, ' mZ/2(Veto l+l- ) Tevatron: O(106) Z’s LHC: …

Higgsed Abelian Dark Sector - Indirect Production Higgs Boson  Dark Photon + Dark Photon AssumeD SM : High pTIsolated ( l+ l- )(l+ l-) + (l+ l-)(+-) ? Di-Resonance Search Tevatron: h  (+-)(+-) Search LHC: h ( l+ l- )(l+ l-) + (l+ l-)(+-) ? Search (c.f. h  ) For mh' 120 GeV ’'

Higgsed Abelian Dark Sector - Indirect Production . With Shared Conserved Quantum Number 2 Standard . Model Dark Sector Supersymmetry with Conserved R-Parity

SUSY Dark Sector ¾ SUSY Abelian Gauge Symmetry Standard Model PortalsDark Sector Portals D=3/2 BD D=2 B  , H*H X  , HD*HD D=5/2 *DD*  Leading Indirect Production Portal  Universal Dark Portal BD GD (Focus on This Portal)

Higgsed Abelian Dark Sector - Indirect Production . With Shared Conserved Quantum Number Bino  Darkino + Dark Photon AssumeD SM , D  Blocked : Inclusive High pTIsolated ( l+ l- )(l+ l-) + (l+ l-)(+-) ? . Di-Resonance Search in Association with MET Inclusive High pTIsolated ( l+ l- )(l+ l-*) + (l+ l-)(+- *) ? Di-Resonance Search in Association with MET Assume D , hD , D , D SM + MET Dark Object Search in Association with SUSY Cascade . (Non-Isolated MET) 

SM Singlet + Higgsed Abelian Dark Sector - Indirect . Production With Shared Conserved Quantum Number Standard Model PortalsDark Sector Portals D=3/2 B , SD D=2 B  , H*H X  , HD*HD D=5/2 *DD* D=7/2 S FD X  Leading Indirect Production Portal  Dark Portal SD X S  F D

SM Singlet + Higgsed Abelian Dark Sector - Indirect . Production With Shared Conserved Quantum Number Singletino  Darkino + Photon , Dark Photon AssumeD SM , D Blocked : Inclusive High pTIsolated ( l+ l- )  + (+-)  ? . Resonance Search in Association with MET 

Di-Lepton Resonance Spin + Polarization Goldstone Portals - Longitudinal Transition Dipole Portals – Transverse

Dark Sectors at High Energy Colliders Three production Mechanisms Available Direct . Indirect . Indirect with Quantum Number Very Wide Range of Signatures … (Examples) Dark Object Content {Jets, Leptons, MET} . Dark Object Multiplicity / Isolation . Associated Objects{Jets, Leptons, MET} Dark Sector ¾ Higgsed Abelian Gauged Symmetry Universal Portals  High pT Low Multiplicity Isolated Objects . (In Association with Other Objects) Di-Lepton Resonance - Spin + Polarization *

Dark Sectors at High Energy Colliders