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Measurement of the low-mass Drell-Yan differential cross section at $\sqrt{s}$ = 7 TeV using the ATLAS detector

The ATLAS collaboration
JHEP 1406 (2014) 112, 2014

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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