HEPData

Abstract (data abstract)

CERN-LHC. The production of a W boson in association with a single charm quark is studied using 4.6 fb^-1 of pp collision data at sqrt(s) = 7 TeV collected in 2011 with the ATLAS detector at the Large Hadron Collider. In events in which a W boson decays to an electron or muon, the charm quark is tagged either by its semileptonic decay to a muon or by the presence of a charmed meson. The integrated and differential cross sections as a function of the pseudorapidity of the lepton from the W-boson decay are measured. Results are compared to the predictions of next-to-leading-order QCD calculations obtained from various parton distribution function parameterisations. The ratio of the strange-to-down sea quark distributions is determined to be 0.96 +0.26,-0.30 at Q^2 = 1.9 GeV^2 which supports the hypothesis of an SU(3) symmetric composition of the light quark sea. Additionally, the cross-section ratio sigma(W^+ + cbar)/sigma(W^- + c) is compared to the predictions obtained using parton distribution function parameterisations with different assumptions on the s-sbar asymmetry.

Table 1

Data from T 8, F 10

10.17182/hepdata.63197.v1/t1

Measured integrated cross sections of the production of a W boson with a single c-jet, a D meson or a...
https://www.hepdata.net/record/data/55571yaml https://www.hepdata.net/record/data/55571/csvcsv
Table 2

Data from F 12

10.17182/hepdata.63197.v1/t2

Measured integrated cross section ratios of the production of W+ and W- bosons associated with a single c-jet, a D...
https://www.hepdata.net/record/data/55572yaml https://www.hepdata.net/record/data/55572/csvcsv
Table 3

Data from F 13

10.17182/hepdata.63197.v1/t3

Measured differential cross sections as function of the lepton pseudo-rapidity of the production of a W boson with a single...
https://www.hepdata.net/record/data/55573yaml https://www.hepdata.net/record/data/55573/csvcsv
Table 4

Data from F 13

10.17182/hepdata.63197.v1/t4

Measured differential cross sections as function of the lepton pseudo-rapidity of the production of a W boson with a D...
https://www.hepdata.net/record/data/55574yaml https://www.hepdata.net/record/data/55574/csvcsv
Table 5

Data from T 10

10.17182/hepdata.63197.v1/t5

Measured cross section ratios of the production of a W boson with a D meson or a D* meson and...
https://www.hepdata.net/record/data/55575yaml https://www.hepdata.net/record/data/55575/csvcsv
Table 6

Data from F 15

10.17182/hepdata.63197.v1/t6

Measured differential cross section ratios of the production of a W boson with a D meson or a D* meson...
https://www.hepdata.net/record/data/55576yaml https://www.hepdata.net/record/data/55576/csvcsv
Table 7

Data from T 11, F 16

10.17182/hepdata.63197.v1/t7

Measured integrated cross sections of the production of a W boson in association with a single c-jet and exactly zero...
https://www.hepdata.net/record/data/55577yaml https://www.hepdata.net/record/data/55577/csvcsv
Table 8

Data from T 11, F 16

10.17182/hepdata.63197.v1/t8

Measured integrated cross sections ratio of the production of a W+ and W- bosons in association with a single c-jet...
https://www.hepdata.net/record/data/55578yaml https://www.hepdata.net/record/data/55578/csvcsv
Table 9

Data from T 11

10.17182/hepdata.63197.v1/t9

Measured integrated cross sections of the production of a W boson in association with a single c-jet decaying into a...
https://www.hepdata.net/record/data/55579yaml https://www.hepdata.net/record/data/55579/csvcsv
Table 10

Data from T 8, F 10

10.17182/hepdata.63197.v1/t10

Correlation matrix corresponding to the total uncertainties of measured integrated cross sections of the production of a W boson with...
https://www.hepdata.net/record/data/55580yaml https://www.hepdata.net/record/data/55580/csvcsv
Table 11

Data from T 8, F 10

10.17182/hepdata.63197.v1/t11

Systematic uncertainties after the averaging procedure of the inclusive cross sections in different channels. The first row (labeled Uncorr.) represents...
https://www.hepdata.net/record/data/55581yaml https://www.hepdata.net/record/data/55581/csvcsv
Table 12

Data from F 13

10.17182/hepdata.63197.v1/t12

Systematic uncertainties after the averaging procedure of the differential cross sections as function of the lepton pseudo-rapidity in different channels....
https://www.hepdata.net/record/data/55582yaml https://www.hepdata.net/record/data/55582/csvcsv
Table 13

Data from F 13

10.17182/hepdata.63197.v1/t13

Systematic uncertainties after the averaging procedure of the differential cross sections as function of the lepton pseudo-rapidity in different channels....
https://www.hepdata.net/record/data/55583yaml https://www.hepdata.net/record/data/55583/csvcsv
Table 14

Data from F 13

10.17182/hepdata.63197.v1/t14

Systematic uncertainties after the averaging procedure of the differential cross sections as function of the lepton pseudo-rapidity in different channels....
https://www.hepdata.net/record/data/55584yaml https://www.hepdata.net/record/data/55584/csvcsv
Table 15

Data from F 13

10.17182/hepdata.63197.v1/t15

Systematic uncertainties after the averaging procedure of the differential cross sections as function of the lepton pseudo-rapidity in different channels....
https://www.hepdata.net/record/data/55585yaml https://www.hepdata.net/record/data/55585/csvcsv
Table 16

Data from F 10

10.17182/hepdata.63197.v1/t16

Theoretical Predictions for the integrated cross section of the production of W+ and W- bosons associated with a single c-jet,...
https://www.hepdata.net/record/data/55586yaml https://www.hepdata.net/record/data/55586/csvcsv
Table 17

Data from F 10

10.17182/hepdata.63197.v1/t17

PDF uncertainty for each of the used PDF sets as well as the combined parton shower, fragmentation and scale uncertainties...
https://www.hepdata.net/record/data/55587yaml https://www.hepdata.net/record/data/55587/csvcsv

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