Spin 2014 Report. December 16,
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1 Spin 2014 Report December 16,
2 Spin 2014 October 20-24, 2014 Peking University, Beijing, China Yingjie International Exchange Centre Main URL: Slides: December 16,
3 Topics High energy hadron experiments RHIC/COMPASS/JLab/HERMES Low energy hadron & nuclear experiments JLab/COSY/J-PARC/RIBF/etc. Form factor / etc. Precision experiments Parity violation / EDM Future experiments RHIC/EIC/ILC Theory Spin decomposition/lattice/tmd/etc. December 16,
4 High energy hadron experiments RHIC COMPASS (JLab) (HERMES) December 16,
5 RHIC/PHENIX Francesca Giordano (UIAC) W μ ± in forward rapidities preliminary results for run 2013 presented here for the first time Work in progress to reduce systematics improve signal to background extraction new data production to correct for known momentum smearing and improve the charge reconstruction December 16,
6 RHIC/PHENIX Inseok Yoon (Seoul National Univ. / RIKEN) Run13 pp 510GeV data has been taken and analyzed: Preliminary result is released ππ Larger asymmetry was observed (c.f. Run09 AA 0 LLLL at s=200gev) December 16,
7 RHIC/PHENIX Haiwang Yu (PKU/NMSU/LANL) The J/ψ A LL measurements at forward rapidity provide access to the small-x region ( 10-3 ) where the gluon polarization is poorly constrained With the large statistics longitudinal p+p data collected at RHIC in 2013, JJ/Ψ we measured AA LLLL at forward rapidity with smaller uncertainty compared with similar prior RHIC measurements December 16,
8 RHIC/PHENIX Xiaorong Wang (NMSU/RBRC) PHENIX measured the transverse single spin asymmetries consistent with zero in heavy flavor production at 200GeV in 2006, 2008 and 2012 The latest 2012 preliminary results bring down the statistical constraints on high transverse momentum bin from 20% to 7% December 16,
9 RHIC/STAR Zilong Chang (Texas A&M Univ.) STAR 2009 inclusive jet A LL results provide the first experimental evidence for positive gluon polarization in the RHIC range STAR GeV inclusive jet A LL results extend measurements at lower x g and agree well with STAR GeV data in the overlapping x T range December 16,
10 RHIC/STAR Christopher Dilks (Penn State Univ.) Forward (2.5 η < 4) π 0 A LL measurement consistent with zero December 16,
11 RHIC/STAR J. Kevin Adkins (Univ. of Kentucky) These results are the first statistically significant nonzero Collins asymmetries measured in hadronic collisions Upwards of 6σ, with very clear charge separation December 16,
12 RHIC/STAR Michael Skoby (Indiana Univ.) Preliminary STAR data show high precision pion pair correlation asymmetries at large p T and M Inv for η > 0 These results are at much higher Q 2 and sample a different mixture of quark flavors than SIDIS Results may be used to test universality of transverse polarization dependent quantities (SIDIS vs p+p) STAR results from 2012 polarized p+p collisions at s = 200 GeV coming soon (higher precision than 2006) December 16,
13 RHIC/STAR Yuxi Pan (UCLA) STAR has measured transverse single spin asymmetries for forward inclusive π 0, which can be readily compared with theory predictions Observed event topology dependence of π 0 single spin asymmetries: isolated π 0 has significantly higher asymmetries than less exclusively produced π 0 (z EM < 0.9) Both Sivers & Collins-type asymmetries are small and not enough to explain the size of inclusive π 0 A N December 16,
14 COMPASS Marcin Stolarski (LIP) December 16,
15 COMPASS Marcin Stolarski (LIP) December 16,
16 COMPASS Marcin Stolarski (LIP) December 16,
17 Low energy hadron & nuclear experiments Form factor proton charge-radius puzzle NN scattering exotic np resonance December 16,
18 Form factor measurement Gordon Cates (Univ. of Virginia) December 16,
19 Proton charge-radius puzzle Gordon Cates (Univ. of Virginia) December 16,
20 Exotic np resonance Andro Kacharava (FZ-Juelich) December 16,
21 Precision experiments Parity violation (EDM) December 16,
22 Parity violation Dave Mack (JLab) December 16,
23 Parity violation Frank Maas (Mainz) December 16,
24 Parity violation William M. Snow (Indiana Univ.) December 16,
25 Theory (Spin decomposition) Lattice QCD TMD December 16,
26 Lattice QCD Keh-Fei Liu (Univ. of Kentucky) December 16,
27 TMD Zuo-tang Liang (Shandong Univ.) December 16,
28 December 16,
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