First Extraction of Transversity from a Global Analysis of Electron-Proton and Proton-Proton Data - INSPIRE

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First Extraction of Transversity from a Global Analysis of Electron-Proton and Proton-Proton Data

Marco Radici
(
- INFN, Pavia
)
,
Alessandro Bacchetta
(
- INFN, Pavia and
- Pavia U.
)

Feb 14, 2018

5 pages

Published in:

Phys.Rev.Lett. 120 (2018) 19, 192001

Published: May 11, 2018

e-Print:

1802.05212 [hep-ph]

DOI:

10.1103/PhysRevLett.120.192001

View in:

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Abstract: (APS)

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 and in proton-proton collisions with a 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 transversity is extracted from a global analysis similar to what is usually done for the spin-averaged and helicity distributions. The knowledge of transversity is important for, among other things, detecting possible signals of new physics in high-precision low-energy experiments.

Note:

version identical to published one; supplemental material available at http://link.aps.org/supplemental/10.1103/PhysRevLett.120.192001

13.87.Fh
11.80.Et
13.60.Hb
electron p: scattering
p p: scattering
p: polarization
polarization: transverse
factorization: collinear
parton: distribution function
generalized parton distribution: transversity

References(49)

Figures(2)

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