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Supersymmetry in the Shadow of Photini

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Supersymmetry in the Shadow of Photini Photini in the UV Photini in the IR Photini at the LHC Supersymmetry in the shadow of photini Ken Van Tilburg August 24, 2012 In collaboration with: Masha Baryakhtar (Stanford), Nathaniel Craig (Rutgers, IAS) Reference: arXiv:1206.0751; JHEP 1207 (2012) 164 Arvanitaki et al: arXiv:0909:5440; Phys.Rev.D81 (2010) 075018 1/6 Photini in the UV Photini in the IR Photini at the LHC Table of contents 1 Photini in the UV 2 Photini in the IR 3 Photini at the LHC 2/6 Photini in the UV Photini in the IR Photini at the LHC Photini in the UV Main features of string theory: 1 supersymmetry assume broken at low energy to solve hierarchy problem 2 extra dimensions (6) assume small size generically complex compactification manifold to get SM very simple manifold: 6-torus ! six 1- and 5-cycles, fifteen 2- and 4-cycles, twenty 3-cycles IIB string theory: 4-form gauge field integrated over 3-cycle i R ! 4D vector gauge field without charged matter Aµ = C4 Σi string theory ! SUSY SM many extra \photon" superfields without any charged matter can in principle mix with U(1) hypercharge and among each other 3/6 Photini in the UV Photini in the IR Photini at the LHC Photini in the IR in SUSY limit, no observable effect: Z 2 L ⊃ d θ WaWa + WbWb − 2WaWb shift away mixing: W ! W − W and g ! p ga b b a a 1−2 physical effects from SUSY breaking, when gauginos get mass y µ δL ⊃ zijλi iσ @µλj − mijλi λj expect sizeable number of photini to be lighter than the bino bino-photino + interphotini cascade via emissions of h; Z; γ 4/6 gluino-bino model gluino-squark-bino model drastically weakened hadronic search limits: slightly enhanced leptonic search sensitivity: Photini in the UV Photini in the IR Photini at the LHC Photini at the LHC reduction of missing ET 1.0 bino 150 GeV L . 0.8 +photino Z u . a +photino H H 0.6 0.4 H L H L 0.2 Occurence 0.0 0 200 400 600 800 Missing ET GeV H L 5/6 gluino-bino model gluino-squark-bino model drastically weakened hadronic search limits: slightly enhanced leptonic search sensitivity: Photini in the UV Photini in the IR Photini at the LHC Photini at the LHC reduction of missing ET 1.0 bino 150 GeV L . 0.8 +1 photino Z u . a +2 photini Z H 0.6 0.4 H L H L 0.2 Occurence 0.0 0 200 400 600 800 Missing ET GeV H L 5/6 gluino-squark-bino model slightly enhanced leptonic search sensitivity: Photini in the UV Photini in the IR Photini at the LHC Photini at the LHC CMS Jets+MET 1.1 fb-1 700 reduction of missing ET bino HCMSL bino HMCL drastically weakened hadronic +photino 5 GeV HZL search limits: 600 +photino 5 GeV HhL gluino-bino model Hsquarks decoupledL 500 L GeV H 400 0 c m 300 200 100 400 500 600 700 800 900 mG HGeVL 5/6 gluino-squark-bino model slightly enhanced leptonic search sensitivity: Photini in the UV Photini in the IR Photini at the LHC Photini at the LHC -1 CMS aT 1.1 fb 700 reduction of missing ET bino HCMSL bino HMCL drastically weakened hadronic +photino 5 GeV HZL search limits: 600 +photino 5 GeV HhL gluino-bino model Hsquarks decoupledL 500 L GeV H 400 0 c m 300 200 100 400 500 600 700 800 900 mG HGeVL 5/6 slightly enhanced leptonic search sensitivity: Photini in the UV Photini in the IR Photini at the LHC Photini at the LHC ATLAS Jets+MET 4.7 fb-1 reduction of missing ET 2000 drastically weakened hadronic search limits: gluino-bino model gluino-squark-bino model 1500 L GeV H S m 1000 bino 0 GeV ATL bino 195 GeV MC +photino Z 5 GeV 500 +photino h 5 GeV H L 500 1000 H L 1500 2000 HmL GeV H LG 5/6 H L Photini in the UV Photini in the IR Photini at the LHC Photini at the LHC CMS SS dilepton 4.7fb-1 reduction of missing ET 500 bino CMS cMSSM drastically weakened hadronic bino MC search limits: photinoH 5 GeVL 450 1250 H L gluino-bino model GeV gluino-squark-bino model 1000 GeV g q L 400 slightly enhanced leptonic GeV H 2 search sensitivity: 1 350 m 750 GeV g 300 1000 750 GeV GeV q q 250 500 600 700 800 900 1000 m0 GeV H L 5/6 Photini in the UV Photini in the IR Photini at the LHC Conclusions IF supersymmetry exists at a low scale, then photini could be another signature of stringy origins; the \IF" above becomes more of an \if" if you believe there are generically many light U(1) gauginos associated with realistic SUSY models 6/6.
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