Abstract (data abstract)

CERN-LHC. The differential cross section for the process Z/gamma*->ll (l=e,mu) as a function of dilepton invariant mass is measured in pp collisions at sqrt(s) = 7 TeV at the LHC using the ATLAS detector. The measurement is performed in the e and mu channels for invariant masses between 26 GeV and 66 GeV using an integrated luminosity of 1.6 fb^-1 collected in 2011 and these measurements are combined. The analysis is extended to invariant masses as low as 12 GeV in the muon channel using 35 pb^-1 of data collected in 2010. The cross sections are determined within fiducial acceptance regions and corrections to extrapolate the measurements to the full kinematic range are provided. Next-to-next-to-leading-order QCD predictions provide a significantly better description of the results than next-to-leading-order QCD calculations, unless the latter are matched to a parton shower calculation.

Table 1

Data from Table 1, Page 13 of preprint

10.17182/hepdata.64183.v1/t1

The nominal electron-channel differential Born-level fiducial cross section. The statistical and systematic uncertainties are given for each invariant mass bin....
Table 2

Data from Table 2, Page 14 of preprint

10.17182/hepdata.64183.v1/t2

The systematic uncertainties of the nominal electron-channel cross-section measurement. Some sources of uncertainty have both correlated and uncorrelated components. Correlated...
Table 3

Data from Table 3, Page 14 of preprint

10.17182/hepdata.64183.v1/t3

The nominal muon-channel differential Born-level fiducial cross section. The statistical, systematic, and total uncertainties are given for each invariant mass...
Table 4

Data from Table 4, Page 15 of preprint

10.17182/hepdata.64183.v1/t4

The systematic uncertainties for the nominal muon-channel cross-section measurement. Some sources of uncertainty have both correlated and uncorrelated components. Correlated...
Table 5

Data from Table 5, Page 21 of preprint

10.17182/hepdata.64183.v1/t5

The combined Born-level fiducial differential cross section dsigma/dm_ll, statistical delta(stat), total correlated delta(cor), uncorrelated delta(unc), and total delta(total) uncertainties, as...
Table 6

Data from Table 6, Page 22 of preprint

10.17182/hepdata.64183.v1/t6

The extended muon channel Born-level fiducial differential cross section dsigma/dm_ll, with the statistical delta(stat), systematic delta(syst), and total delta(tot) uncertainties...
Table 7

Data from Table 7, Page 22 of preprint

10.17182/hepdata.64183.v1/t7

The systematic uncertainties for the extended muon channel cross-section measurement in each invariant mass bin. Correlated uncertainties come from the...
Table 8

Data from Table 8, Page 23 of preprint

10.17182/hepdata.64183.v1/t8

Theory predictions for NLO+LLPS and for fixed-order calculations at NLO and NNLO including higher-order electroweak corrections, for the nominal analysis...
Table 9

Data from Table 9, Page 23 of preprint

10.17182/hepdata.64183.v1/t9

Theory predictions for NLO+LLPS and for fixed-order calculations at NLO and NNLO including higher-order electroweak corrections, for the extended analysis...
Table 10

Data from Table 10, Page 24 of preprint

10.17182/hepdata.64183.v1/t10

Higher-order electroweak corrections in nominal analysis, Delta(HOEW), and the correction for the Photon Induced process, Delta(PI), together with its uncertainty...
Table 11

Data from Table 11, Page 24 of preprint

10.17182/hepdata.64183.v1/t11

Higher-order electroweak corrections in extended analysis, Delta(HOEW), and the correction for the Photon Induced process, Delta(PI), together with its uncertainty...
Table 12

Data from Table 12, Page 24 of preprint

10.17182/hepdata.64183.v1/t12

Values of chi^2 for the nominal and extended DY cross-section measurements for predictions based from Fewz at NLO and NNLO...
Table 13

Data from Table 13, Page 25 of preprint

10.17182/hepdata.64183.v1/t13

The chi^2 values from NLO and NNLO QCD fits made using the ATLAS nominal and extended Drell--Yan cross-section measurements and...

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