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Accessing OAM Through TMD’s

Accessing OAM Through TMD’s. p+p and SIDIS. p+p at RHIC. Sivers Phi shift of back-to-back jets or hadrons—first results from 2006 data A N jets—midrapidity + forward—2006-2007 Separate Sivers and Collins A N direct photons—forward/backward for q or g Sivers—2007?

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Accessing OAM Through TMD’s

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  1. Accessing OAM Through TMD’s p+p and SIDIS C. Aidala, QCD-N06

  2. p+p at RHIC • Sivers • Phi shift of back-to-back jets or hadrons—first results from 2006 data • AN jets—midrapidity + forward—2006-2007 • Separate Sivers and Collins • AN direct photons—forward/backward for q or g Sivers—2007? • AN open charm—gluon—first results 2006 (high statistics but not event-by-event), displaced vertex tagging possible ~2009 • AN photon+jet—x dependence—midrapidity ~2007 • AN W’s—Sivers flavor separation—2011?? C. Aidala, QCD-N06

  3. SIDIS • Sivers moment (HERMES, COMPASS, JLab) • HERMES data-taking finished, analysis ongoing • COMPASS has proton target now—unknown for transverse spin physics beyond 2006. Possible future high-intensity muon beam? • JLab approved proposal for transverse target in Hall A. Would be great if CLAS could put in transverse target as well—large acceptance. Transverse target experiments after 12 GeV upgrade? • EIC—broad Q2-x coverage C. Aidala, QCD-N06

  4. Other ideas • Spin dependence of <kT> • (Doug Fields unable to attend) • Look for additive or cancelling effects for same-spin vs. opposite-spin collisions, depending also on impact parameter • No good handle on impact parameter yet • See hep-ex/0605039 for unpolarized method of <kT> measurement • Hyperon polarization in unpolarized p+p to access Boer-Mulders?? • ? C. Aidala, QCD-N06

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