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Title Transversity distributions and tensor charges of the nucleon: extraction from dihadron production and their universal nature
Authors Christopher Cocuzza, Andreas Metz, Daniel Pitonyak, Alexei Prokudin, Nobuo Sato, Ralf Seidl
JLAB number JLAB-THY-23-3859
LANL number arXiv:2306.12998
Other number DOE/OR/23177-6444
Document Type(s) (Journal Article) 
Associated with EIC: No
Supported by Jefferson Lab LDRD Funding: No
Funding Source: Nuclear Physics (NP)
Other Funding:NSF, DOE

Compiled for Physical Review Letters
Volume 132
Page(s) 091901
Publication Abstract: We perform the first global quantum chromodynamics (QCD) analysis of dihadron production data in electron-positron annihilation, semi-inclusive deep-inelastic scattering, and proton-proton collisions, from which we extract simultaneously the transversity distributions of the nucleon and $\pi^+\pi^-$ dihadron fragmentation functions. We incorporate in our fits known theoretical constraints on transversity, namely, its small-$x$ asymptotic behavior and the Soffer bound. We furthermore show that lattice-QCD results for the tensor charges can be successfully included in the analysis. This resolves the previously reported incompatibility between the tensor charges extracted from dihadron production data and lattice QCD. We also find agreement with results for the transversity and tensor charges obtained from measurements on single-hadron production. Overall, our work demonstrates for the first time the universal nature of all available information for the transversity distributions and the tensor charges of the nucleon.
Experiment Numbers: other
Document: pdf
Accepted Manuscript: PhysRevLett.132.091901.pdf
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