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“QCD at Cosmic Energies” workshop Erice 29/8 - 5 /9/2004

SEARCHING FOR EXOTICS AT THE LHC. “QCD at Cosmic Energies” workshop Erice 29/8 - 5 /9/2004 Apostolos D. Panagiotou University of Athens apanagio@phys.uoa.gr. CENTAURO EVENT EXPERIMENTAL CHARACTERISTICS

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“QCD at Cosmic Energies” workshop Erice 29/8 - 5 /9/2004

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  1. SEARCHING FOR EXOTICS AT THE LHC “QCD at Cosmic Energies” workshop Erice 29/8 - 5/9/2004 Apostolos D. Panagiotou University of Athens apanagio@phys.uoa.gr Apostolos D. Panagiotou, UoA

  2. CENTAURO EVENT EXPERIMENTAL CHARACTERISTICS  1. No Electromagnetic component“No” πο  “No” pions if isospin conserved  2. Very small hadronic multiplicitybaryons 3. Very high: pT > 1.5 GeV/c 4. Event at fragmentation rapidity Long penetrating (hadronic) component Apostolos D. Panagiotou, UoA

  3. (Strangelet ??) Long penetrating hadronic component in CR events Apostolos D. Panagiotou, UoA

  4. Nucleus – Nucleus Collision “A ~ 60” “A ~ 15” Zeit. Phys. A333 (1989) 355 Phys. Rev. D45 (1992) 3134Astrop. Phys. 2 (1994) 167 J. Phys. G: Nucl. Part. Phys. 23(1997)2069 EPJ direct C9(2000)1 Astrop. Phys. 13 (2000) 173 Physics Atomic Nuclei 67(2004) 396 ~10 km <Mcn>~ 180 GeV <εcn>~ 7 GeV/fm-3 <Vcn>~ 27 fm3<μq> ~ 600 MeV <Tcn> ~ 130 MeV Apostolos D. Panagiotou, UoA

  5. Net Peak of baryon distribution (BRAHMS) η ~ ηbeam - 2.4 ~ 6.3 Apostolos D. Panagiotou, UoA

  6. Baryon free y t ‘Pb’ ‘Pb’ Baryon rich t ~ (2-3)x10-22 sec Long lived “to” > 10-9 sec Apostolos D. Panagiotou, UoA Strangelet: A= n(u+d+s)

  7. Apostolos D. Panagiotou, UoA

  8. CASTOR Apostolos D. Panagiotou, UoA Physics Atomic Nuclei 67(2004)396

  9. CASTOR Apostolos D. Panagiotou, UoA

  10. CASTOR “tSQM” ~ 10-9 sec Apostolos D. Panagiotou, UoA

  11. Astropart. Phys. 13(2000)173 (8/45)π2T4 + μq2Τ2 + μq4/(2π2) = (2.043Nq /4π)(1/R4) μq μq = DQM-bag stability curves: T as a function of R with μq = 600 + Δμqand μq = 600 - Δμq, corresponding to C-R Centauro fireball values. Apostolos D. Panagiotou, UoA

  12. μq μq DQM-bag stability curves:T as a function of R with μq = 600 + Δμqand μq = 600 - Δμq, corresponding to Pb+Pb Centauro fireball values at the LHC. Apostolos D. Panagiotou, UoA

  13. EPJ direct C9(2000)1 s Apostolos D. Panagiotou, UoA

  14. Simulation of the passage of a Strangelet through CASTOR READING UNIT Apostolos D. Panagiotou, UoA READING UNIT

  15. CASTOR at CMS H CASTOR A L Air-core Light Guide Reading Unit APDs • EM = 2 RU • H = 18 RU Beam Apostolos D. Panagiotou, UoA

  16. DEPOSITED ENERGY GeV HIJING HIJING HIJING Apostolos D. Panagiotou, UoA Sampling Unit Sampling Unit

  17. Apostolos D. Panagiotou, UoA

  18. SUMMARY Exotic C-R events may be observed and studied under controlled experiment at the LHC. CASTOR is designed to study such events. Soon we will check the correctness of the Centauro model and the existence of the so-called “CR Exotic events. Apostolos D. Panagiotou, UoA

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