When using this data, please cite the original publication:

Additionally, you should cite the record:

@misc{hepdata.74337, author = "{CMS Collaboration}", title = "{Measurement of the W boson helicity fractions in the decays of top quark pairs to lepton+jets final states produced in pp collisions at sqrt(s) = 8 TeV}", howpublished = "{HEPData (collection)}", year = 2016, note = "\url{https://doi.org/10.17182/hepdata.74337}" }

or, if you prefer, a specific version of the record:

@misc{hepdata.74337.v1, author = "{CMS Collaboration}", title = "{Measurement of the W boson helicity fractions in the decays of top quark pairs to lepton+jets final states produced in pp collisions at sqrt(s) = 8 TeV (Version 1)}", howpublished = "{HEPData (collection)}", year = 2016, note = "\url{https://doi.org/10.17182/hepdata.74337.v1}" }

You can also cite this table directly.

@misc{hepdata.74337.v1/t1, author = "{CMS Collaboration}", title = "{``Table 1'' of ``Measurement of the W boson helicity fractions in the decays of top quark pairs to lepton+jets final states produced in pp collisions at sqrt(s) = 8 TeV'' (Version 1)}", howpublished = "{HEPData (dataset)}", year = 2016, note = "\url{https://doi.org/10.17182/hepdata.74337.v1/t1}" }