DVCS at 6/12 GeV, and ideas for the EIC

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Introduction Initial results Dedicated experiments Future 6 GeV 12 GeV EIC Conclusion 0.3 0.2 0.1 0 0 0.5 1 1.5 0.3 0.2 0.1 0 0.3 0.2 0.1 0 0 0.5 1 1.5 0 0.5 1 1.5 0.3 0.2 0.1 0 0.3 0.2 0.1 0 0.3 0.2 0.1 0 0 0.5 1 1.5 0 0.5 1 1.5 0 0.5 1 1.5 0.3 0.2 0.1 0 0.3 0.2 0.1 0 0.3 0.2 0.1 0 0.3 0.2 0.1 0 0 0.5 1 1.5 0 0.5 1 1.5 0 0.5 1 1.5 0 0.5 1 1.5 0.3 0.2 0.1 0 0.3 0.2 0.1 0 0.3 0.2 0 0.5 1 1.5 0 0.5 1 1.5 0.1 0 0 0.5 1 1.5 Hall B E1-DVCS BSA in a large kinematic domain (Hall B) 0.3 0.10 < x < 0.15 B ) 2 (GeV 2 α(t) 0.2 0.1 Q 0 4 0 0.5 1 1.5 2 |t| (GeV ) 3 A = → σ − ← σ → σ + ← σ ≈ α sin φ 1 + β cos φ 2 Simple models do not reproduce the data 1 0.1 0.2 0.3 0.4 0.5 x B Carlos Muñoz Camacho Analysis of cross sections underway LPC Clermont-Ferrand, CNRS/IN2P3 DVCS at 6/12 GeV and ideas for EIC 15
Introduction Initial results Dedicated experiments Future 6 GeV 12 GeV EIC Conclusion Hall B Target spin asymmetry A UL (Hall B) Not dedicated result: 0.4 0.2 A UL 0 -0.2 -0.4 -0.6 0 50 100 150 200 250 300 350 φ Degree Dedicated experiment took data in Hall B earlier this year Sensitivity to GPD ˜H Other upcoming experiments (at 6 GeV): ◮ More DVCS on unpolarized proton ◮ DVCS on a transversely polarized target (conditionally approved) ◮ DVCS on nuclei (He 4 ) Carlos Muñoz Camacho LPC Clermont-Ferrand, CNRS/IN2P3 DVCS at 6/12 GeV and ideas for EIC 16
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DVCS at 6/12 GeV, and ideas for the EIC

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