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Sergei Shmatov Joint Institute for Nuclear Research, Dubna on behalf of CMS Collaboration

Searches for Physics Beyond the Standard Model (Exotica) in pp collisions at 7 TeV at the CMS Experiment. Sergei Shmatov Joint Institute for Nuclear Research, Dubna on behalf of CMS Collaboration The NPD RAS Conference "The Physics of Fundamental Interactions”

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Sergei Shmatov Joint Institute for Nuclear Research, Dubna on behalf of CMS Collaboration

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  1. Searches for Physics Beyond the Standard Model (Exotica) in pp collisions at 7 TeV at the CMS Experiment Sergei Shmatov Joint Institute for Nuclear Research, Dubna on behalf of CMS Collaboration The NPD RAS Conference "The Physics of Fundamental Interactions” 21-25 Nov 2011, ITEP, Moscow

  2. Sergei Shmatov, Searches for Physics Beyond the Standard Model at the CMS Experiment, NPD RAS Conference 2011, Moscow OUTLINE • Exotica at LHC is Physics beyond SM/SUSY/Higgs • Heavy Resonances (extended gauge models, extra dimensions, • technicolor)  dileptons, dijets, diphotons, ttbar, WZ • Non-Resonant Signals • Mono-particle + Missing ET (extended gauge models, extra • dimensions, technicolor) mono-jet + MET, mono-photon + MET, • mono-lepton + MET • Black Holes (extra dimensions) high-multiplicity events • Leptoquarks • 4th Generation  lepton + jet, dilepton • CMS Exotica Public Physics Results • https://twiki.cern.ch/twiki/bin/view/CMSPublic/PhysicsResultsEXO

  3. Compact Muon Solenoid Large general-purpose particle physics detector LHC provided 5.7 fb-1 at a 7 TeV center-of-mass energy for this year 5.2 fb-1 was recorded by CMS The results covered by this talk were produced with ~ 1fb-1 Total weight 12 500 t Overall diameter 15.00 m Overall length 21.6 m Magnetic field 3.8 Tesla Detector subsystems are designed to measure: the energy and momentum of photons, electrons, muons, jets, missing ET up to a few TeV Sergei Shmatov, Searches for Physics Beyond the Standard Model at the CMS Experiment, NPD RAS Conference 2011, Moscow 3

  4. Heavy Resonances • Extra gauge bosons predicted by extended gauge models (left-right symmetric models and GUT-inspired models) • Kaluza-Klein graviton excitations arising in extra dimensions models with curved bulk space (Randall-Sundrum model) • Small extra spatial dimensions, Curved • bulk space (AdS5 - slice) • Well separated graviton mass spectrum • Kaluza-Klein excitations of SM gauge • bosons in large flat extra-dimensions (TeV-1 Models) • Bosons could also propagate in the bulk • Fermions are localized at the same (opposite) orbifold point: destructive (constructive) interference between SM gauge bosons and KK excitations • Technicolor • Signals: di-leptons/di-jets/di-photons resonance states in high (~TeV) invariant mass range  new particles would be observed as a bump, excess in the mass spectrum • Excellent momentum and energy resolutions are required !! Sergei Shmatov, Searches for Physics Beyond the Standard Model at the CMS Experiment, NPD RAS Conference 2011, Moscow 4

  5. Dileptons: Spectra New Physics (Z/ZKK/GKK) contributions to SM processes: CMS PAS EXO-11-019 Part. of Russian Inst.: JINR Sergei Shmatov, Searches for Physics Beyond the Standard Model at the CMS Experiment, NPD RAS Conference 2011, Moscow 5

  6. Dileptons: Limits CMS PAS EXO-11-019 Part. of Russian Inst.: JINR A Z’ with standard-model-like couplings can be excluded below 1940 GeV, the superstring-inspired Z’ below 1620 GeV, and RS Kaluza–Klein gravitons below1450 (1780) GeV for couplings of 0.05 (0.10) Sergei Shmatov, Searches for Physics Beyond the Standard Model at the CMS Experiment, NPD RAS Conference 2011, Moscow 6

  7. Highest Dilepton Mass at CMS CMS PAS EXO-11-019 Dimuon, M = 1203 GeV Dielectron, M = 971 GeV Part. of Russian Inst.: JINR Sergei Shmatov, Searches for Physics Beyond the Standard Model at the CMS Experiment, NPD RAS Conference 2011, Moscow 7

  8. Diphotons CMS PAS EXO-11-038 RS Kaluza–Klein gravitons below1.7 TeV for couplings of 0.10 Sergei Shmatov, Searches for Physics Beyond the Standard Model at the CMS Experiment, NPD RAS Conference 2011, Moscow 8

  9. Dijets CMS PAS EXO-11-015 arXiv:1107.4771 Phys. Lett. B, 3 (704) 2011, 123 Sergei Shmatov, Searches for Physics Beyond the Standard Model at the CMS Experiment, NPD RAS Conference 2011, Moscow 9

  10. Highest Dijets Mass at CMS CMS PAS EXO-11-015 Sergei Shmatov, Searches for Physics Beyond the Standard Model at the CMS Experiment, NPD RAS Conference 2011, Moscow 10

  11. ttbar CMS PAS EXO-11-055 CMS PAS EXO-11-006 Sub-picobarn limits on (Z ttbar  (W+b) (W-bbar)) for Z heavier than 1.35 TeV Sub-picobarn limits on (Z ttbar in the all-hadronic channel) for Z heavier than 1.1 TeV CMS excludes KK gluon with mass of 1.0-1.5 TeV CMS excludes topcolor Z in mass regions 850-935 GeV andf 960-1060 GeV Sergei Shmatov, Searches for Physics Beyond the Standard Model at the CMS Experiment, NPD RAS Conference 2011, Moscow 11

  12. WZ Resonances CMS PAS EXO-11-041 Sergei Shmatov, Searches for Physics Beyond the Standard Model at the CMS Experiment, NPD RAS Conference 2011, Moscow 12

  13. (Lepton-Lepton) + (Jet-Jet) Resonance CMS PAS EXO-11-002 • WR and heavy neutrino from LR models • for details see talk by N.V. Krasnikov Part. of Russian Inst.: INR Sergei Shmatov, Searches for Physics Beyond the Standard Model at the CMS Experiment, NPD RAS Conference 2011, Moscow 13

  14. Non-Resonant Signals • ADD-graviton contribution in the SM processes (Drell-Yan, • diphotons productions) • Compositeness • Signals: excess in di-particle spectrum d=2 SM d=4 Sergei Shmatov, Searches for Physics Beyond the Standard Model at the CMS Experiment, NPD RAS Conference 2011, Moscow 14

  15. Exclusion Limits for ADD Dimuons Diphotons CMS PAS EXO-11-039 CMS PAS EXO-11-038 Sergei Shmatov, Searches for Physics Beyond the Standard Model at the CMS Experiment, NPD RAS Conference 2011, Moscow 15

  16. Mono-Particle + MET • Extra gauge bosons (W) predicted by extended gauge • models (left-right symmetric models and GUT-inspired • models) • Kaluza-Klein graviton emission in large • flat extra-dimensions (ADD model) • Technicolor • Signals: lepton + MET, photon +MET, jet +MET Sergei Shmatov, Searches for Physics Beyond the Standard Model at the CMS Experiment, NPD RAS Conference 2011, Moscow 16

  17. Lepton + MET CMS PAS EXO-11-024 Signature is W-like at high mas Background is SM W production! W’ with SM-like coupling is exluded with MW’ = 2.27 TeV Sergei Shmatov, Searches for Physics Beyond the Standard Model at the CMS Experiment, NPD RAS Conference 2011, Moscow 17

  18. Photon + MET CMS PAS EXO-11-058 CMS extends the current limits to be MD > 1.25-1.31 TeV for n = 2 - 6 Sergei Shmatov, Searches for Physics Beyond the Standard Model at the CMS Experiment, NPD RAS Conference 2011, Moscow 18

  19. Jet + MET CMS PAS EXO-11-059 Sergei Shmatov, Searches for Physics Beyond the Standard Model at the CMS Experiment, NPD RAS Conference 2011, Moscow 19

  20. Black Holes • for details see talk by M.V. Savina Sergei Shmatov, Searches for Physics Beyond the Standard Model at the CMS Experiment, NPD RAS Conference 2011, Moscow 20

  21. Black Holes The CMS analysis - 2010, 35 pb-1: arXiv:1012.3375v1, Phys. Lett. B V697 (2011), p. 434 The CMS analysis - 2011, 1.09 fb-1: recent CMS analysis - EXO-11-071 Part. of Russian Inst.: JINR CMS set limits on the minimum BH mass of 4.4-5.1 TeV Sergei Shmatov, Searches for Physics Beyond the Standard Model at the CMS Experiment, NPD RAS Conference 2011, Moscow 21

  22. Leptoquarks An LQ carries color, has fractional electric charge, can have spin 0 or spin 1, and couples to a lepton and a quark with coupling strength β! An LQ would decay to a charged lepton and a quark, with an unknown branching fraction λ, or a neutrino and a quark, with branching fraction 1- β Sergei Shmatov, Searches for Physics Beyond the Standard Model at the CMS Experiment, NPD RAS Conference 2011, Moscow 22

  23. Leptoquarks CERN-PH-EP-2010-052 ST is the sum of the magnitudes of the pT of the two leading electrons and two leading jets. A 95% C.L. lower limit is set on the mass of a first-generation scalar leptoquark at 384 GeV Sergei Shmatov, Searches for Physics Beyond the Standard Model at the CMS Experiment, NPD RAS Conference 2011, Moscow 23

  24. 4th Generation Recently renewed interest, since it has been shown that the EWK bounds are less constraining for a non-degenerate fourth generation! With a fourth generation, indirect bounds on the Higgs boson mass can be relaxed, and an additional generation of quarks may possess enough intrinsic matter and anti-matter asymmetry to be relevant for the baryon asymmetry of the Universe! Sergei Shmatov, Searches for Physics Beyond the Standard Model at the CMS Experiment, NPD RAS Conference 2011, Moscow 24

  25. bt + W CMS PAS EXO-11-036 Mb > 495 GeV Sergei Shmatov, Searches for Physics Beyond the Standard Model at the CMS Experiment, NPD RAS Conference 2011, Moscow 25

  26. Searching of t(1) CMS PAS EXO-11-005 CMS PAS EXO-11-050 Mt > 422 GeV Mt > 417 GeV Sergei Shmatov, Searches for Physics Beyond the Standard Model at the CMS Experiment, NPD RAS Conference 2011, Moscow 26

  27. Searching of t(2) CMS PAS EXO-11-051 Mt > 450 GeV Sergei Shmatov, Searches for Physics Beyond the Standard Model at the CMS Experiment, NPD RAS Conference 2011, Moscow 27

  28. CMS Exotica Summary Sergei Shmatov, Searches for Physics Beyond the Standard Model at the CMS Experiment, NPD RAS Conference 2011, Moscow 28

  29. Conclusions and Outlook • CMS demonstrates excellent performance • TeV leptons, photons, jets • Mono-particle + associated missing energy • Complex signatures • Physics analysis with ~ 1 fb-1 set stringent limits to many benchmarks models (more than 20 papers and public Physics Analysis Notes) • Unfortunately, no evident deviations • from Standard Model have been • seen so far • ~ 5 fb-1 are in analysis Sergei Shmatov, Searches for Physics Beyond the Standard Model at the CMS Experiment, NPD RAS Conference 2011, Moscow 29

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