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Exotic Hadron Spectroscopy @ J-PARC

Exotic Hadron Spectroscopy @ J-PARC. Jung Keun Ahn @ PNU. HaPhy 2005.10.8. Pentaquarks. Exotic Baryon. New Searches. Quantum # cannot be matched by qq’q”. For SU f (3) , qqq generates 3 x 3 x 3 = 1 + 8s + 8a + 10 For meson-octet +baryon-octet, 8 x 8 = 1 + 8 + 8 + 10 + 10 + 27. J-PARC.

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Exotic Hadron Spectroscopy @ J-PARC

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  1. Exotic Hadron Spectroscopy@ J-PARC Jung Keun Ahn @ PNU HaPhy 2005.10.8

  2. Pentaquarks Exotic Baryon New Searches Quantum # cannot be matched by qq’q”. For SUf(3) , qqq generates 3 x 3 x 3 = 1 + 8s + 8a + 10 For meson-octet +baryon-octet, 8 x 8 = 1 + 8 + 8 + 10 + 10 + 27 J-PARC - Outlook

  3. Exotic Baryons New Searches J-PARC Outlook

  4. Exotic Baryons K+d and K+n New Searches G=20 MeV G=1 MeV J-PARC Outlook

  5. Exotic Baryons Exotic Baryons New Searches J-PARC Outlook

  6. Exotic Baryons Exotic Baryons New Searches J-PARC Outlook

  7. Exotic Baryons nK+ Pentaquark Q+ New Searches J-PARC Outlook

  8. Exotic Baryons Null Results New Searches J-PARC Outlook

  9. Exotic Baryons Null Results Need High Stat New Searches HERA-B J-PARC PHENIX Outlook

  10. Exotic Baryons Disappeared? New Searches J-PARC Outlook

  11. Exotic Baryons Very preliminary KEK-E522 KEK-PS K2 Beam Line 1.66 GeV/c K- 1.9 GeV/c p- s~2mb New Searches Q+ J-PARC Outlook

  12. Exotic Baryons N(2400)Q+K- New Searches J-PARC Outlook

  13. Exotic Baryons gd Q+ L(1520) @ LEPS γ L(1520) New Searches K+/K0 p/n Q+ n/p Q+ J-PARC Quasi-free L(1520) and non-resonant KKp Bump structure f Outlook MMd(γ,K－p) GeV/c2

  14. Exotic Baryons Possible final states: CLAS very preliminary 1) ppπ+π- (L) 2) ppπ-π+π- (p) 3) ppπ-K+ (n) (Θ→nK+) Search forγ3He→ΛΘ+p Eg = 0.8 – 1.55 GeV Decay modes studied: Θ+→K0p Λ→pπ- K0 → π+π- Θ+→K+n Λ→pπ- New Searches (n) (K+) J-PARC Outlook

  15. Exotic Baryons X-- @ NA49 @ CERN G<0.018 GeV X− − New Searches M=1.862± 0.002 GeV X0 Combined spectra J-PARC X(1530) Outlook CERN SPS hep-ex/0310014

  16. Exotic Baryons Negative Results WA89 S-+A @ 340 GeV/c. New Searches J-PARC Outlook Also not seen by CDF, BaBar, ZEUS, ALEPH and E690.

  17. Exotic Baryons Exp Evidence for N* New Searches N(1730) J-PARC N(1680) GRAAL gnhn Outlook

  18. Pentaquarks New Exotic Baryons New Searches J-PARC Outlook

  19. Pentaquarks Further exotics from STAR and CLAS New Searches Invariant Mass (GeV/c2) Invariant Mass (GeV/c2) J-PARC S. Kabana, AGS&RHIC Users Meeting M. Bttaglieri, JLAB Users Meeting June 16, 2004 Invariant Mass (GeV/c2) Outlook

  20. Pentaquarks X-(1862)? Search forQ++, S5,X 5- -in JLab • Search for Q*++ partners in ep e’K-X++ • Search for S5 in ep  eK+Xo • Search for X-ingpK+K+X- New Searches J-PARC simulation Outlook

  21. Pentaquarks 2 1 Eg < 2.2 GeV cosCM(K0) < -0.35 simulation very preliminary g p  K+p+p- (n) cos JCMK0 <- 0.35 N (1523) ~ 160 N (1573)~ 300 Mass = 1523 +/- 5 MeV FWHM ~ 9 MeV 1 Mass = 1573 +/- 5 MeV FWHM ~ 9 MeV 2 Excited States of the Q+ • Spin-flavor partners, T = 1, JP = 3/2+, to the Q+ are predicted at slightly higher masses than the Q+. New Searches g p  (K+n) K0 (p+p-) J-PARC JLab–G11 run Outlook

  22. Pentaquarks X(2000) and S(3170) New Searches J-PARC • pN X(2000)NS0K+ N @ 70 GeV • uudss pentaquark? SPHINX @ ITEP • K-p S(3170)p-  SKKpp p- @6.5, 8.25 GeV • uusss pentaquark? CERN and Argone BC Outlook

  23. Pentaquarks K-pX--(1860)K+p+ • Complete kinematics, pK > 2.63 GeV/c • K-pX-(1820)K+X-p+p-K+ @ 2.87 GeV/c BNL-HBC New Searches J-PARC Outlook

  24. Pentaquarks Hyperon Resonances 3 x 3 x 3 = 10 + 8 + 8a + 1 = (D*, S*, X*, W*) + (N*, S*, L*, X*) + (N*, S*, L*, X*) + L*  N*: D* : L* : S* : X* : W* = 2: 1: 3: 3: 3: 1 (# of N* = 14) New Searches J-PARC Low Energy Hyperon BeamS=-3 Hypernuclei Hyperon Resonances  6 GeV/c K beam for 2.5 GeV/c2 Y* Production Outlook

  25. Pentaquark J-PARC New Searches J-PARC Outlook

  26. Pentaquark Beam Intensity New Searches J-PARC Outlook

  27. Pentaquark Requirements New Searches J-PARC Outlook

  28. Pentaquark High-p Beamline New Searches J-PARC Outlook

  29. Pentaquark Spectrometer New Searches J-PARC 0 1 2 3 4 5 6 7 8 9 10 P (GeV) p/p TOF CERENKOV TOF Outlook p/k CERENKOV p/e CERENKOV SPring-8 CALORIMETER

  30. Pentaquark HARP @ CERN-PS New Searches J-PARC Outlook

  31. Pentaquark 3 2 1 4 Korea Beamline @ J-PARC New Searches K 1.1/0.8 Beamline or High-p Beamline 2005 2-year Design + 3-year Construction 2006? J-PARC $ 15M (½Beamline + ½ Experiment) ½ Cost for the Construction  Korea Outlook 3~4 Exp Proposals + Beamline Proposal 2006.3

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