Searches for Extra Dimensions, Leptoquarks, and Technicolor at the LHC Sergio Grancagnolo Humboldt-Universitaet zu Berlin Rencontres de Blois on "Particle Physics and Cosmology" 26-31 May 2013

Sergio Grancagnolo - HU-Berlin Extra Dimensions Arkani-Hamed, Dimopoulos, Dvali (ADD) Gravity propagate in (4+n)-dimensional space, SM confined Fundamental MD Planck scale Size of extra dimensions R Randall-Sundrum invokes extra dim with curvature k Predicts excited Kaluza-Klein modes of the graviton Appear as spin-2 resonances, first excitation G* Intrinsic narrow G* width when k=k/MPl<0.1 Quantum black holes with n=1 Narrow intrinsic width when k/MPl<0.1 Curvature of the warped extra-dimension k Reduced Plank mass MPl = MPl/sqrt(8) 26-31 May 2013 Sergio Grancagnolo - HU-Berlin

Sergio Grancagnolo - HU-Berlin Extra Dimensions Resonant diboson production WW, ZZ Dilepton resonances ee, μμ tt resonances in lepton+jets final states Resonances in bb and bg final states Monojet and missing energy Microscopic black holes in multiparticle events 26-31 May 2013 Sergio Grancagnolo - HU-Berlin

Resonant diboson k=0.1 G*→WW (bulk) MG*<940 (710) GeV ATLAS 4.7fb-1@7TeV arXiv:1305.0125 Bulk: the fermion and boson fields of the SM are free to propagate into the extra dimension k=1 bulk G*→ZZ MG*<850 GeV k=0.1 G*→ZZ (bulk) MG*<945 (720) GeV CMS 4.9fb-1@7TeV 10.1016/j.physletb.2012.11.063 ATLAS 7.2fb-1@8TeV ATLAS-CONF-2012-150 26-31 May 2013 Sergio Grancagnolo - HU-Berlin

Sergio Grancagnolo - HU-Berlin Dilepton resonances ATLAS-CONF-2013-017 20fb-1@8TeV lk=0.1 MG*<2.47TeV CMS Kaluza–Klein gravitons lighter than 2390 (2030) GeV, assuming that the coupling parameter k/MPl is 0.10 (0.05) k=0.1 MG*<2.39TeV CMS 5.3fb-1@7TeV+4.1fb-1@8TeV 10.1016/j.physletb.2013.02.003 26-31 May 2013 Sergio Grancagnolo - HU-Berlin

Monojet and missing energy CMS 19.5fb-1@8TeV CMS-PAS-EXO-12-048 qg→qG, gg→gG, qq→gG Not interacting gravitons ATLAS 4.7fb-1@7TeV arXiv:1210.4491 26-31 May 2013 Sergio Grancagnolo - HU-Berlin

Microscopic black holes CMS 12fb-1@8TeV arXiv:1303.5338 26-31 May 2013 Sergio Grancagnolo - HU-Berlin

Sergio Grancagnolo - HU-Berlin Resonances in bb and bg CMS 19.6fb-1@8TeV CMS-PAS-EXO-12-023 Lk=0.1, fbb=0.1 1.42<MG*<1.57TeV 26-31 May 2013 Sergio Grancagnolo - HU-Berlin

tt resonances (l+jets) ATLAS 4.7fb-1@7TeV arXiv:1305.2756 to be updated if approved ГgKK/mgKK=15.3% 0.7<mgKK<2.07TeV ГgKK/mgKK=15.3% 0.7<mgKK<2.07TeV CMS-PAS-EXO-11-093 5.0fb-1@7TeV 1.0<mgKK<1.98TeV 26-31 May 2013 Sergio Grancagnolo - HU-Berlin

Same-sign dilepton searches ATLAS 14.3fb-1@8TeV ATLAS-CONF-2013-051 2UED/RPP MgKK<0.9TeV two universal extra dimension under the real projective plane geometry (2UED/RPP) In this model both extradimensions have same size R4=R5 This model predicts the pair production of Kaluza- Klein excitations of the photon with mass √2mKK, each of them decaying to tt, with a branching fraction assumed to be 100%. Cosmological observations constrain mKK to lie approximately between 600 GeV and 1000 GeV. CMS 19.6fb-1@8TeV CMS-PAS-B2G-12-012 26-31 May 2013 Sergio Grancagnolo - HU-Berlin

Sergio Grancagnolo - HU-Berlin Leptoquarks Second generation scalar leptoquark Two muons and at least two jets One muon, at least two jets and missing energy Third generation leptoquark b-jet and τ lepton Pair production assumed One τ decaying hadronically, the other leptonically One lepton (e or μ), large missing energy, 2 jets 26-31 May 2013 Sergio Grancagnolo - HU-Berlin

Second generation Channels: μμ + ≥2jets μ + ET + ≥2jets CMS 19.6fb-1@8TeV CMS-PAS-EXO-12-042 Assuming BR(LQ→μq)=100% (50%) MLQ<1070 (785) GeV Assuming BR(LQ→μq)=100% (50%) MLQ<685 (594) GeV ATLAS 1.03fb-1@7TeV EPJ C72 (2012) 2151 26-31 May 2013 Sergio Grancagnolo - HU-Berlin

Third generation ATLAS 4.7fb-1@7TeV arXiv:1303.0526 Assuming BR(LQ→τb)=100% : MLQ<534 GeV Assuming BR(LQ→τb)=100% : MLQ<525 GeV Assuming SU(5) vector leptoquarks : MVLQ<760 GeV CMS 4.8fb-1@7TeV 10.1007/JHEP12(2012)055 26-31 May 2013 Sergio Grancagnolo - HU-Berlin

Sergio Grancagnolo - HU-Berlin Technicolor Resonant WZ Low Scale Technicolor (LSCT) viable option for EWSB Narrow widths technimesons to WZ Lightest vector technirho, axial-vector techni-a Specific assumptions on mass hierarchy and mixing with electroweak gauge bosons Leptophobic topcolor, narrow resonance Z' BR(Z'→tt)=33% for masses > 700 GeV 26-31 May 2013 Sergio Grancagnolo - HU-Berlin

Resonant WZ ATLAS 13fb-1@8TeV ATLAS-CONF-2013-015 MρT<920 GeV CMS 5fb-1@7TeV 10.1103/PhysRevLett.109.141801 Assuming MπT=3/4MρT-25GeV : 167<MρT<687 GeV Assuming MρT<MπT+MW : 180<MρT<938 GeV 26-31 May 2013 Sergio Grancagnolo - HU-Berlin

Sergio Grancagnolo - HU-Berlin topcolor ATLAS 4.7fb-1@7TeV arXiv:1305.2756 CMS 5fb-1@7TeV CMS-PAS-EXO-11-093 to be updated if approved 0.5<MZ'<1.74 TeV 1.0<MZ'<1.98 TeV 26-31 May 2013 Sergio Grancagnolo - HU-Berlin