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When using this data, please cite the original publication:

The CMS collaboration (2013).

Measurement of the W-Boson Helicity in Top-Quark decays from $t\bar{t}$ Production in Lepton + Jets Events in pp Collisions at $\sqrt{s} =$ 7 TeV. JHEP 10 (2013) 167.

https://doi.org/10.1007/JHEP10(2013)167

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Additionally, you should also cite the record:

The CMS collaboration (2013).

Measurement of the W-Boson Helicity in Top-Quark decays from $t\bar{t}$ Production in Lepton + Jets Events in pp Collisions at $\sqrt{s} =$ 7 TeV. HEPData.

https://doi.org/10.17182/hepdata.64900

You can also cite the 3 data tables individually:

The CMS collaboration (2013).

"Table 1" of "Measurement of the W-Boson Helicity in Top-Quark decays from $t\bar{t}$ Production in Lepton + Jets Events in pp Collisions at $\sqrt{s} =$ 7 TeV". HEPData.

https://doi.org/10.17182/hepdata.64900.v1/t1

The CMS collaboration (2013).

"Table 2" of "Measurement of the W-Boson Helicity in Top-Quark decays from $t\bar{t}$ Production in Lepton + Jets Events in pp Collisions at $\sqrt{s} =$ 7 TeV". HEPData.

https://doi.org/10.17182/hepdata.64900.v1/t2

The CMS collaboration (2013).

"Table 3" of "Measurement of the W-Boson Helicity in Top-Quark decays from $t\bar{t}$ Production in Lepton + Jets Events in pp Collisions at $\sqrt{s} =$ 7 TeV". HEPData.

https://doi.org/10.17182/hepdata.64900.v1/t3

When using this data, please cite the original publication:

The CMS collaboration (2013).

Measurement of the W-Boson Helicity in Top-Quark decays from $t\bar{t}$ Production in Lepton + Jets Events in pp Collisions at $\sqrt{s} =$ 7 TeV. JHEP 10 (2013) 167.

https://doi.org/10.1007/JHEP10(2013)167

View Inspire Record Download BibTeX from Inspire

Additionally, you should also cite the record:

@misc {
    1249595,
    title = "{Measurement of the W-Boson Helicity in Top-Quark decays from $t\bar{t}$ Production in Lepton + Jets Events in pp Collisions at $\sqrt{s} =$ 7 TeV}",
    abstract = "CERN-LHC.  The W-boson helicity fractions in top-quark decays are  measured with ttbar events in the lepton+jets final state, using proton-proton  collisions at a centre-of-mass energy of 7 TeV, collected in 2011 with the CMS  detector at the LHC. The data sample corresponds to an integrated luminosity  of 5.0 inverse femtobarns. The measured fractions of longitudinal, left-, and  right-handed helicity are F0 = 0.682 +/- 0.030 (stat.) +/- 0.033 (syst.),  FL = 0.310 +/- 0.022 (stat.) +/- 0.022 (syst.), and  FR = 0.008 +/- 0.012 (stat.) +/- 0.014 (syst.), consistent with the standard  model predictions. The measured fractions are used to probe the existence of  anomalous Wtb couplings. Exclusion limits on the real components of the  anomalous couplings gL, gR are also derived.",
    doi = "10.17182/hepdata.64900",
    url = "https://doi.org/10.17182/hepdata.64900",
    year = "2013",
    type = "Data Collection",
    collaboration = "CMS",
    authors = "Chatrchyan, Serguei and others"
}

You can also cite the 3 data tables individually:

Table 1

@misc {
    1249595/t1,
    title = "{'Table 1' of 'Measurement of the W-Boson Helicity in Top-Quark decays from $t\bar{t}$ Production in Lepton + Jets Events in pp Collisions at $\sqrt{s} =$ 7 TeV'}",
    abstract = "Measurements of the W-boson helicity fractions from the cos(theta*) (leptonic branch) distributions. The columns show the fit type, the decay...",
    doi = "10.17182/hepdata.64900.v1/t1",
    url = "https://doi.org/10.17182/hepdata.64900.v1/t1",
    year = "2013",
    type = "Data Set",
    collaboration = "CMS",
    authors = "Chatrchyan, Serguei and others"
}

Table 2

@misc {
    1249595/t2,
    title = "{'Table 2' of 'Measurement of the W-Boson Helicity in Top-Quark decays from $t\bar{t}$ Production in Lepton + Jets Events in pp Collisions at $\sqrt{s} =$ 7 TeV'}",
    abstract = "Measurements of the W-boson helicity fractions from the cos(theta*) (leptonic branch) and |cos^(had) theta*| (hadronic branch) distributions. The columns show...",
    doi = "10.17182/hepdata.64900.v1/t2",
    url = "https://doi.org/10.17182/hepdata.64900.v1/t2",
    year = "2013",
    type = "Data Set",
    collaboration = "CMS",
    authors = "Chatrchyan, Serguei and others"
}

Table 3

@misc {
    1249595/t3,
    title = "{'Table 3' of 'Measurement of the W-Boson Helicity in Top-Quark decays from $t\bar{t}$ Production in Lepton + Jets Events in pp Collisions at $\sqrt{s} =$ 7 TeV'}",
    abstract = "The combined helicity fractions and their uncertainties, including the type of fit performed, the channels (l=e,mu combination) and branches of...",
    doi = "10.17182/hepdata.64900.v1/t3",
    url = "https://doi.org/10.17182/hepdata.64900.v1/t3",
    year = "2013",
    type = "Data Set",
    collaboration = "CMS",
    authors = "Chatrchyan, Serguei and others"
}

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