HEPData

Abstract (data abstract)

First measurements of the W -> lnu and Z/gamma* -> ll (l = e, mu) production cross sections in proton-proton collisions at sqrt(s) = 7 TeV are presented using data recorded by the ATLAS experiment at the LHC. The results are based on 2250 W -> lnu and 179 Z/gamma* -> ll candidate events selected from a data set corresponding to an integrated luminosity of approximately 320 nb-1. The measured total W and Z/gamma*-boson production cross sections times the respective leptonic branching ratios for the combined electron and muon channels are sigma_W^tot * BR(W -> lnu) = 9.96 +- 0.23(stat) +- 0.50(syst) +- 1.10(lumi) nb and sigma_Z/gamma*^tot * BR(Z/gamma* -> ll) = 0.82 +- 0.06(stat) +- 0.05(syst) +- 0.09(lumi) nb (within the invariant mass window 66 < m_ll < 116 GeV). The W/Z cross-section ratio is measured to be 11.7 +- 0.9(stat) +- 0.4(syst). In addition, measurements of the W+ and W- production cross sections and of the lepton charge asymmetry are reported. Theoretical predictions based on NNLO QCD calculations are found to agree with the measurements. Numerical values supplied by M Vincter. UPDATE 06/04/2016: The tables detailing results on total cross sections had misleading phase space selections quoted, these are removed now.

Table 1

Data from T 11

10.17182/hepdata.56744.v1/t1

Measured fiducial cross section times leptonic branching ratio for W+ production in the W+ -> e+ nu final state.
https://www.hepdata.net/record/data/49581yaml https://www.hepdata.net/record/data/49581/csvcsv
Table 2

Data from T 11

10.17182/hepdata.56744.v1/t2

Measured fiducial cross section times leptonic branching ratio for W- production in the W- -> e- nubar final state.
https://www.hepdata.net/record/data/49584yaml https://www.hepdata.net/record/data/49584/csvcsv
Table 3

Data from T 11

10.17182/hepdata.56744.v1/t3

Measured fiducial cross section times leptonic branching ratio for W+/- production in the combined W+ -> e+ nu and W-...
https://www.hepdata.net/record/data/49588yaml https://www.hepdata.net/record/data/49588/csvcsv
Table 4

Data from T 11

10.17182/hepdata.56744.v1/t4

Measured fiducial cross section times leptonic branching ratio for Z/gamma* production in the Z/gamma* -> e+e- final state.
https://www.hepdata.net/record/data/49590yaml https://www.hepdata.net/record/data/49590/csvcsv
Table 5

Data from T 11

10.17182/hepdata.56744.v1/t5

Measured fiducial cross section times leptonic branching ratio for W+ production in the W+ -> mu+ nu final state.
https://www.hepdata.net/record/data/49593yaml https://www.hepdata.net/record/data/49593/csvcsv
Table 6

Data from T 11

10.17182/hepdata.56744.v1/t6

Measured fiducial cross section times leptonic branching ratio for W- production in the W- -> mu- nubar final state.
https://www.hepdata.net/record/data/49595yaml https://www.hepdata.net/record/data/49595/csvcsv
Table 7

Data from T 11

10.17182/hepdata.56744.v1/t7

Measured fiducial cross section times leptonic branching ratio for W+/- production in the combined W+ -> mu+ nu and W-...
https://www.hepdata.net/record/data/49600yaml https://www.hepdata.net/record/data/49600/csvcsv
Table 8

Data from T 11

10.17182/hepdata.56744.v1/t8

Measured fiducial cross section times leptonic branching ratio for Z/gamma* production in the Z/gamma* -> mu+ mu- final state.
https://www.hepdata.net/record/data/49602yaml https://www.hepdata.net/record/data/49602/csvcsv
Table 9

Data from T 13,F 11

10.17182/hepdata.56744.v1/t9

Measured total cross section times leptonic branching ratio for W+ production in the W+ -> e+ nu final state.
https://www.hepdata.net/record/data/49604yaml https://www.hepdata.net/record/data/49604/csvcsv
Table 10

Data from T 13,F 11

10.17182/hepdata.56744.v1/t10

Measured total cross section times leptonic branching ratio for W- production in the W- -> e- nubar final state.
https://www.hepdata.net/record/data/49607yaml https://www.hepdata.net/record/data/49607/csvcsv
Table 11

Data from T 13,F 11

10.17182/hepdata.56744.v1/t11

Measured total cross section times leptonic branching ratio for W+/- production in the combined W+ -> e+ nu and W-...
https://www.hepdata.net/record/data/49610yaml https://www.hepdata.net/record/data/49610/csvcsv
Table 12

Data from T 13,F 11

10.17182/hepdata.56744.v1/t12

Measured total cross section times leptonic branching ratio for Z/gamma* production in the Z/gamma* -> e+ e- final state.
https://www.hepdata.net/record/data/49613yaml https://www.hepdata.net/record/data/49613/csvcsv
Table 13

Data from T 13,F 11

10.17182/hepdata.56744.v1/t13

Measured total cross section times leptonic branching ratio for W+ production in the W+ -> mu+ nu final state.
https://www.hepdata.net/record/data/49616yaml https://www.hepdata.net/record/data/49616/csvcsv
Table 14

Data from T 13,F 11

10.17182/hepdata.56744.v1/t14

Measured total cross section times leptonic branching ratio for W- production in the W- -> mu- nubar final state.
https://www.hepdata.net/record/data/49621yaml https://www.hepdata.net/record/data/49621/csvcsv
Table 15

Data from T 13,F 11

10.17182/hepdata.56744.v1/t15

Measured total cross section times leptonic branching ratio for W+/- production in the combined W+ -> mu+ nu and W-...
https://www.hepdata.net/record/data/49623yaml https://www.hepdata.net/record/data/49623/csvcsv
Table 16

Data from T 13,F 11

10.17182/hepdata.56744.v1/t16

Measured total cross section times leptonic branching ratio for Z/gamma* production in the Z/gamma* -> mu+ mu- final state.
https://www.hepdata.net/record/data/49625yaml https://www.hepdata.net/record/data/49625/csvcsv
Table 17

Data from P 25 (C=PREPRINT)

10.17182/hepdata.56744.v1/t17

Measured total cross section times leptonic branching ratio for W+ production in the W+ -> l+ nu (l = e,...
https://www.hepdata.net/record/data/49628yaml https://www.hepdata.net/record/data/49628/csvcsv
Table 18

Data from P 25 (C=PREPRINT)

10.17182/hepdata.56744.v1/t18

Measured total cross section times leptonic branching ratio for W- production in the W- -> l- nubar (l = e,...
https://www.hepdata.net/record/data/49631yaml https://www.hepdata.net/record/data/49631/csvcsv
Table 19

Data from P 26 (C=PREPRINT)

10.17182/hepdata.56744.v1/t19

Measured total cross section times leptonic branching ratio for W+/- production in the combined W+ -> l+ nu and W-...
https://www.hepdata.net/record/data/49634yaml https://www.hepdata.net/record/data/49634/csvcsv
Table 20

Data from P 26 (C=PREPRINT)

10.17182/hepdata.56744.v1/t20

Measured total cross section times leptonic branching ratio for Z/gamma* production in the combined Z/gamma* -> l+ l- (l =...
https://www.hepdata.net/record/data/49637yaml https://www.hepdata.net/record/data/49637/csvcsv
Table 21

Data from T 14,F 14

10.17182/hepdata.56744.v1/t21

Measured total cross-section ratio R_{W+/Z} = sigma (W+ -> e+ nu) / sigma (Z/gamma^* -> e+ e-).
https://www.hepdata.net/record/data/49640yaml https://www.hepdata.net/record/data/49640/csvcsv
Table 22

Data from T 14,F 14

10.17182/hepdata.56744.v1/t22

Measured total cross-section ratio R_{W-/Z} = sigma (W- -> e- nubar) / sigma (Z/gamma^* -> e+ e-).
https://www.hepdata.net/record/data/49643yaml https://www.hepdata.net/record/data/49643/csvcsv
Table 23

Data from T 14,F 14

10.17182/hepdata.56744.v1/t23

Measured total cross-section ratio R_{W+-/Z} = sigma (W+/- -> e+/- nu/nubar) / sigma (Z/gamma^* -> e+ e-).
https://www.hepdata.net/record/data/49646yaml https://www.hepdata.net/record/data/49646/csvcsv
Table 24

Data from T 14,F 14

10.17182/hepdata.56744.v1/t24

Measured total cross-section ratio R_{W+/Z} = sigma (W+ -> mu+ nu) / sigma (Z/gamma^* -> mu+ mu-).
https://www.hepdata.net/record/data/49649yaml https://www.hepdata.net/record/data/49649/csvcsv
Table 25

Data from T 14,F 14

10.17182/hepdata.56744.v1/t25

Measured total cross-section ratio R_{W-/Z} = sigma (W- -> mu- nubar) / sigma (Z/gamma^* -> mu+ mu-).
https://www.hepdata.net/record/data/49651yaml https://www.hepdata.net/record/data/49651/csvcsv
Table 26

Data from T 14,F 14

10.17182/hepdata.56744.v1/t26

Measured total cross-section ratio R_{W+-/Z} = sigma (W+/- -> mu+/- nu/nubar) / sigma (Z/gamma^* -> mu+ mu-).
https://www.hepdata.net/record/data/49653yaml https://www.hepdata.net/record/data/49653/csvcsv
Table 27

Data from P 28 (C=PREPRINT)

10.17182/hepdata.56744.v1/t27

Measured total cross-section ratio R_{W+/Z} = sigma (W+ -> l+ nu) / sigma (Z/gamma^* -> l+ l-) where (l =...
https://www.hepdata.net/record/data/49656yaml https://www.hepdata.net/record/data/49656/csvcsv
Table 28

Data from P 28 (C=PREPRINT)

10.17182/hepdata.56744.v1/t28

Measured total cross-section ratio R_{W-/Z} = sigma (W- -> l- nubar) / sigma (Z/gamma^* -> l+ l-) where (l =...
https://www.hepdata.net/record/data/49689yaml https://www.hepdata.net/record/data/49689/csvcsv
Table 29

Data from P 28 (C=PREPRINT)

10.17182/hepdata.56744.v1/t29

Measured total cross-section ratio R_{W+-/Z} = sigma (W+/- -> l+/- nu/nubar) / sigma (Z/gamma^* -> l+ l-) where (l =...
https://www.hepdata.net/record/data/49690yaml https://www.hepdata.net/record/data/49690/csvcsv
Table 30

Data from T 15,F16

10.17182/hepdata.56744.v1/t30

Measured lepton asymmetry from W+ -> e+ nu and W- -> e- nubar, binned as a function pseudorapidity.
https://www.hepdata.net/record/data/49691yaml https://www.hepdata.net/record/data/49691/csvcsv
Table 31

Data from T 15,F16

10.17182/hepdata.56744.v1/t31

Measured lepton asymmetry from W+ -> e+ nu and W- -> e- nubar.
https://www.hepdata.net/record/data/49692yaml https://www.hepdata.net/record/data/49692/csvcsv
Table 32

Data from T 15,F16

10.17182/hepdata.56744.v1/t32

Measured lepton asymmetry from W+ -> mu+ nu and W- -> mu- nubar, binned as a function pseudorapidity.
https://www.hepdata.net/record/data/49693yaml https://www.hepdata.net/record/data/49693/csvcsv
Table 33

Data from T 15,F16

10.17182/hepdata.56744.v1/t33

Measured lepton asymmetry from W+ -> mu+ nu and W- -> mu- nubar.
https://www.hepdata.net/record/data/49694yaml https://www.hepdata.net/record/data/49694/csvcsv
Table 34

Data from T 15,F16

10.17182/hepdata.56744.v1/t34

Measured lepton asymmetry from W+ -> l+ nu and W- -> l- nubar (l = e, mu), binned as a...
https://www.hepdata.net/record/data/49695yaml https://www.hepdata.net/record/data/49695/csvcsv
Table 35

Data from T 15,F16

10.17182/hepdata.56744.v1/t35

Measured lepton asymmetry from W+ -> l+ nu and W- -> l- nubar (l = e, mu).
https://www.hepdata.net/record/data/49696yaml https://www.hepdata.net/record/data/49696/csvcsv

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