TY - JOUR
T1 - Role of the Soffer bound in determination of transversity and the tensor charge
AU - D'Alesio, Umberto
AU - Flore, Carlo
AU - Prokudin, Alexei
N1 - Funding Information:
We would like to thank F. Murgia and D. Pitonyak for helpful discussions and careful reading of the manuscript. This paper was supported in part by the National Science Foundation under Grant No. PHY-1623454 (A.P., C.F.), the DOE Contract No. DE-AC05-06OR23177 (A.P.), under which Jefferson Science Associates, LLC operates Jefferson Lab, by the European Union's Horizon 2020 research and innovation programme under grant agreement No. 824093 (C.F.), and by Regione Autonoma della Sardegna , Legge 7/2007 Premialità 2013 (C.F.). C.F. is thankful to Penn State Berks for hospitality and support for his visit during which part of the project was done.
Publisher Copyright:
© 2020 The Authors
PY - 2020/4/10
Y1 - 2020/4/10
N2 - The transversity and the tensor charge of the nucleon, currently under active investigation experimentally and theoretically, are fundamental quantities in hadron physics as well as for our comprehension of the nucleon structure. Some tension between the values of the tensor charge, as computed on the basis of phenomenological extractions and lattice QCD calculations, has been observed. In this letter, by means of an explicit example, we study the role of assumptions, usually adopted in phenomenological parametrizations, and we show that, by relaxing some of them, such a tension could be eased.
AB - The transversity and the tensor charge of the nucleon, currently under active investigation experimentally and theoretically, are fundamental quantities in hadron physics as well as for our comprehension of the nucleon structure. Some tension between the values of the tensor charge, as computed on the basis of phenomenological extractions and lattice QCD calculations, has been observed. In this letter, by means of an explicit example, we study the role of assumptions, usually adopted in phenomenological parametrizations, and we show that, by relaxing some of them, such a tension could be eased.
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U2 - 10.1016/j.physletb.2020.135347
DO - 10.1016/j.physletb.2020.135347
M3 - Article
AN - SCOPUS:85081217465
SN - 0370-2693
VL - 803
JO - Physics Letters, Section B: Nuclear, Elementary Particle and High-Energy Physics
JF - Physics Letters, Section B: Nuclear, Elementary Particle and High-Energy Physics
M1 - 135347
ER -