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Exploring New Physics Frontiers at the LHeC Workshop

Delve into the innovative concepts and discoveries in high-energy physics presented at the LHeC workshop held in Divonne. Learn about gamma-p and gamma-A colliders, the Energy Frontier, QCD Explorer, and more exciting physics prospects.

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Exploring New Physics Frontiers at the LHeC Workshop

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  1. 2nd CERN-ECFA-NuPECC Workshop on the LHeC 1-3 September 2009, Divonne LHeC based γp &γA Colliders: Luminosity and Physics Saleh SULTANSOY TOBB University of Economics and Technology, Ankara, Turkey & AMEA Institute of Physics, Baku, Azerbaijan with A. Akay, H. Aksakal, A.K. Çiftçi, H. Karadeniz, D. Schulte, G. Ünel and F. Zimmermann • Introduction • Energy Frontier • QCD Explorer • … 01.09.2009, Divonne

  2. Special Linac 01.09.2009, Divonne

  3. Two kinds of New Physics 1. New Physics Beyond the SM (preons, SUSY and so on) 2. New Physics Within the SM structure # Electroweak: massive neutrinos, fourth family(LHC) Strong: small xg etc (LHeC/QCD Explorer) Hypothesis: QCD – Confinement EW – Flavor Democracy #In debris of the MSSM, SUGRA and so on, we forgot the SM itself. For example, MSSM-3 contains ~ 200 free parameters put by hand !!! (or infinite number of SUGRA points) 01.09.2009, Divonne

  4. Two stages of the LHeC 1. QCD Explorer: Ee = 50 – 100 GeV Mandatory • PDF’s for (s)LHC • QCD basics 2. Energy Frontier: Ee > 250 GeV Depends on LHC results γ options:impossible at RR, not feasible with ERL 01.09.2009, Divonne

  5. Few slides on Energy Frontier from Linac-Ring Type Colliders: Second Way to TeV Scale (S. Sultansoy, EPS HEP 2003, Aachen) 01.09.2009, Divonne

  6. Second Way to TeV Scale 01.09.2009, Divonne

  7. Physics targets and achievable limits (following U. Amaldi in CERN 87-07, pp. 323-352) “Comparing the physics potentialities of two* accelerators is a formidable task for at least three obvious reasons: i) the unknown cannot be predicted; ii) even after having agreed on a list of ‘expected’ new phenomena, the relative importance is subjective; iii) tomorrow’s discovery may completely modify the ‘relevance’ weights given to selected phenomena” * LHC (including LEP*LHC option) and CLIC 01.09.2009, Divonne

  8. Summary of discovery limits for 12 different processes* 1987 → 2003 pp √s= 16 TeV, L= 1033 cm-2 s-1→√s= 14 TeV, L= 1034 cm-2 s-1 e+e–√s= 2 TeV, L= (4) 1033 cm-2 s-1→√s= 0.5 TeV, L= 1034 cm-2 s-1 ep √s= 1.5 TeV, L= 1032 cm-2 s-1→√s= 3.7 TeV, L= 1032 cm-2 s-1 + γp option !! * Two principal additions during last years: • extra dimensions (serious) • infinite number of SUGRA points (curious) 01.09.2009, Divonne

  9. Discovery limits in TeV (rescaled from U. Amaldi 87) 01.09.2009, Divonne

  10. Let us turn to QCD Explorer stage γ options require a lot of R&D (even more than ep options) Therefore, we need strong physics motivation(s) With Lγp/γA = O(Lep/eA)γ options are advantageous for a lot of processes … 01.09.2009, Divonne

  11. An Example: small xg The importance of small xg region (at sufficiently high Q2 ~ 10 GeV2)exploration for strong interactions corresponds to the importance of theHiggs boson search for electro-weak interactions xg After detector cuts 1. Fixed Target 10-2 - 2. HERA 10-410-3 3. e-RHIC 10-3 ? 4. THERA 10-5 10-4 5. QCD Explorer 10-5 ? 6. NLC*LHC 10-6 ? 7. CLIC*VLHC 10-7 ? 01.09.2009, Divonne

  12. 01.09.2009, Divonne

  13. 01.09.2009, Divonne

  14. For QCD Explorer see Gökhan’s presentation (tomorrow) 01.09.2009, Divonne

  15. First (journal) paper 01.09.2009, Divonne

  16. Basic paper 01.09.2009, Divonne

  17. TESLA*HERA paper 01.09.2009, Divonne

  18. Advanced paper 01.09.2009, Divonne

  19. 01.09.2009, Divonne

  20. Laser(s) • γpis analog ofγe • advantage: larger z (CR-IP), m vs mm, disadvantage: proton beam line • conventional lasers vs ERL FEL, … 01.09.2009, Divonne

  21. Physics atγp Ankara Workshop April 1997 see presentations by A.K. Çiftçi and I.T. Çakır (tomorrow) 01.09.2009, Divonne

  22. Physics atγA Ankara Workshop April 1997 01.09.2009, Divonne

  23. Conclusion • QCD Explorer is mandatory, EF is not urgent • γ options essentially enlarge physics search potential • Laser parameters and CR&IR design depend on e-linac choice 01.09.2009, Divonne

  24. Back-up from V. Telnov, 2009 01.09.2009, Divonne

  25. from H. Aksakal et al., NIM A 2007 01.09.2009, Divonne

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