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Structure of Nucleons and Nuclei Como June 14, 2013

CONCLUDING REMARKS. F. Bradamante University of Trieste, Italy. Structure of Nucleons and Nuclei Como June 14, 2013. G 1 p = 0.123  0.013  0.019 DS = 0.12  0.17. The Quark Contribution to the Nucleon Spin.  SPIN CRISIS. 25 years !. A worldwide effort since decades.

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Structure of Nucleons and Nuclei Como June 14, 2013

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  1. CONCLUDING REMARKS F. Bradamante University of Trieste, Italy Structure of Nucleons and Nuclei Como June 14, 2013

  2. G1p= 0.123  0.013  0.019DS = 0.12  0.17 The Quark Contribution to the Nucleon Spin  SPIN CRISIS Franco Bradamante

  3. 25 years ! Franco Bradamante

  4. A worldwide effort since decades SPIN CRISIS E80 E130 E142/3 E154/5 EMC SMC COMPASS HERMES CLAS/HALL-A, B Phenix/Star and Theory Franco Bradamante Experiments

  5. Spin Physics push in US for a polarized proton collider but undoubtedly the EMC result caused a phase transition record number of citations sum rules !!! QCD !!! spin sum-rule Franco Bradamante many unresolved puzzles even before transverse spin effects: Hyperon polarization E704 Krisch effect

  6. measurements of Gluon Helicity HERMES and COMPASS gave their contribution the ball is on the RHIC side Franco Bradamante

  7. measurements of Gluon Helicity Franco Bradamante

  8. measurements of ΔΣ spin sum-rule ΔΣOK Δs = 0.08 incompatible with SIDIS measurement but Franco Bradamante

  9. strange helicitypuzzle priority issue: multiplicities Franco Bradamante

  10. TRANSVERSE SPIN ! Franco Bradamante

  11. Since many years intriguing evidence of large transverse spin effects at high energy hyperon polarization high pt effects in hadronic interactions asymmetries in hadron production Transverse Spin US: pp collider Europe: HELP at LEP HERMES COMPASS Franco Bradamante Bonn, 15 December 2011

  12. and, shortly after : Franco Bradamante Collins asymmetry Sivers asymmetry

  13. unpolarised SIDIS cross-section huge ammountof data from HERMES and COMPASS Franco Bradamante

  14. azimuthal asymmetries - cos x 0.130 0.038 0.020 0.012 0.003 0.40 0.55 0.20 0.25 0.32 0.70 0.85 z Franco Bradamante

  15. azimuthal asymmetries - cos 2 x 0.130 0.038 0.020 0.012 0.003 0.40 0.55 0.20 0.25 0.32 0.70 0.85 z Franco Bradamante

  16. (transverse) spin dependent asymmetries studies of Q2 evolution Franco Bradamante Sivers asymmetry

  17. (transverse) spin dependent asymmetries Franco Bradamante Transversity

  18. (transverse) spin dependent asymmetries M. Radici Franco Bradamante Transversity

  19. INTERPLAY BETWEENCOLLINS ASYMMETRY AND TWO-HADRON ASYMMETRY X. Artru and HERMES (L. Pappalardo) Franco Bradamante

  20. test of pseudo-universality of T-odd TMD PDFs Franco Bradamante measurement of polarisedDrell-Yan COMING SOON !

  21. more on theory … Franco Bradamante

  22. Franco Bradamante

  23. GPDs and hard work ! Franco Bradamante

  24. OAM A. Bacchetta Franco Bradamante

  25. FUTURE Franco Bradamante

  26. message to the community HERMES COMPASS JLab6 to-morrow: COMPASS-II JLab12 still time to extract valuable physics from existing data but hurry up, don’t wait too long! make specific suggestions Franco Bradamante today: a lot of results / data from

  27. second message to the community to … Franco Bradamante from

  28. … Transversity 2014 ! Franco Bradamante

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