Transverse parton momenta in single inclusive hadron production in <i>e<sup>+</sup> e<sup>-</sup></i> annihilation processes [electronic resource]
Here, we study the transverse momentum distributions of single inclusive hadron production in <i>e<sup>+</sup>e<sup>-</sup></i> annihilation processes. Although the only available experimental data are scarce and quite old, we find that the fundamental features of...
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Online Access (via OSTI) |
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| Format: | Government Document Electronic eBook |
| Language: | English |
| Published: |
Washington, D.C. : Oak Ridge, Tenn. :
United States. Department of Energy. ; distributed by the Office of Scientific and Technical Information, U.S. Department of Energy,
2017.
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| Subjects: |
| Summary: | Here, we study the transverse momentum distributions of single inclusive hadron production in <i>e<sup>+</sup>e<sup>-</sup></i> annihilation processes. Although the only available experimental data are scarce and quite old, we find that the fundamental features of transverse momentum dependent (TMD) evolution, historically addressed in Drell-Yan processes and, more recently, in Semi-inclusive deep inelastic scattering processes, are visible in <i>e<sup>+</sup>e<sup>-</sup></i> annihilations as well. Interesting effects related to its non-perturbative regime can be observed. We test two different parameterizations for the p<sub>$\perp$</sub> dependence of the cross section: the usual Gaussian distribution and a power-law model. We find the latter to be more appropriate in describing this particular set of experimental data, over a relatively large range of p<sub>$\perp$</sub> values. We use this model to map some of the features of the data within the framework of TMD evolution, and discuss the caveats of this and other possible interpretations, related to the one-dimensional nature of the available experimental data. Non-Perturbative Qcd; Transverse Momentum Dependent Fragmentation Functions; Tmd Evolution. |
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| Item Description: | Published through SciTech Connect. 06/17/2017. ": S0370269317305105" Physics Letters. Section B 772 C ISSN 0370-2693 AM. M. Boglione; J. O. Gonzalez-Hernandez; R. Taghavi. |
| Physical Description: | p. 78-86 : digital, PDF file. |