Cross-channel analysis of quark and gluon generalized parton distributions with helicity flip B. Pire, K. Semenov-Tian-Shansky, L. Szymanowski and S. Wallon Eur. Phys. J. A, 50 5 (2014) 90 Published online: 28 May 2014 DOI: 10.1140/epja/i2014-14090-1