Helicity Flip in Diffractive DIS
classification
✦ hep-ph
keywords
diffractivehelicitybelievedbreakingburkhardt-cottinghamdemisedeuterondiscuss
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I review new results on s-channel helicity nonconservation (SCHNC) in diffractive DIS. I discuss how by virtue of unitarity diffractive DIS gives rise to spin structure functions which were believed to vanish at x << 1. These include tensor polarization of sea quarks in the deuteron, strong breaking of the Wandzura-Wilczek relation and demise of the Burkhardt-Cottingham sum rule.
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