Global analysis of fragmentation functions for eta mesons

Fragmentation functions for eta mesons are extracted at next-to-leading order accuracy of QCD in a global analysis of data taken in electron-positron annihilation and proton-proton scattering experiments. The obtained parametrization is in good agreement with all data sets analyzed and can be utiliz...

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Detalles Bibliográficos
Autores principales: Aidala, C.A., Ellinghaus, F., Sassot, R., Seele, J.P., Stratmann, M.
Formato: Artículo publishedVersion
Publicado: 2011
Acceso en línea:http://hdl.handle.net/20.500.12110/paper_15507998_v83_n3_p_Aidala
https://repositoriouba.sisbi.uba.ar/gsdl/cgi-bin/library.cgi?a=d&c=artiaex&d=paper_15507998_v83_n3_p_Aidala_oai
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Sumario:Fragmentation functions for eta mesons are extracted at next-to-leading order accuracy of QCD in a global analysis of data taken in electron-positron annihilation and proton-proton scattering experiments. The obtained parametrization is in good agreement with all data sets analyzed and can be utilized, for instance, in future studies of double-spin asymmetries for single-inclusive eta production. The Lagrange multiplier technique is used to estimate the uncertainties of the fragmentation functions and to assess the role of the different data sets in constraining them. © 2011 American Physical Society.