CIPANP 2018 - Thirteenth Conference on the Intersections of Particle and Nuclear Physics

First Extraction of Transversity from Data on Lepton-Hadron Scattering and Hadronic Collisions

1 Jun 2018, 17:30

20m

South Foyer | Pinon Room (Hyatt Regency Indian Wells Conference Center)

Parallel PGDNN Parton and Gluon Distributions in Nucleons and Nuclei

Speaker

Prof. Marco Radici (INFN - Sezione di Pavia)

Description

We present the first extraction of the transversity distribution in the framework of collinear factorization based on the global analysis of pion-pair production in deep-inelastic scattering off transversely polarized targets and in proton-proton collisions with one transversely polarized proton. The extraction relies on the knowledge of dihadron fragmentation functions, which are taken from the analysis of electron-positron annihilation data. For the first time, the chiral-odd transversity is extracted from a global analysis similar to what is usually done for the chiral-even spin averaged and helicity distributions. The knowledge of transversity is important for detecting possible signals of new physics in high-precision low-energy experiments.

Presentation materials

Slides

127-0-radici.pdf