Update on phenomenological extraction of the proton tensor charge

Apr 9, 2019, 4:49 PM
Rettorato - Aula Principi d'Acaja

Rettorato - Aula Principi d'Acaja

via Verdi, 8 Turin
Parallel Session Talk WG6: Spin and 3D structure WG6: Spin and 3D structure


Marco Radici


The tensor charge, namely the first Mellin moment of the chiral-odd transversity parton distribution, is not connected to operators entering the Standard Model Lagrangian at tree level. It could represent a low-energy footprint of new physics happening at much higher scales, hence it is important to know it with very high precision. I will present the latest results obtained by extracting the transversity distribution from a global analysis of pion-pair production in deep-inelastic scattering and in proton-proton collisions. In particular, I will discuss the impact of pseudodata connected to future more precise measurements at both medium-low and high parton fractional momenta, and I will compare the projected results with recent lattice calculations of the valence and isovector components of the tensor charge.

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Presentation materials