• Browse all
Measurement of double-differential cross sections for top quark pair production in pp collisions at $\sqrt{s} = 8$ $\,\text {TeV}$ and impact on parton distribution functions

The CMS collaboration
Eur.Phys.J.C 77 (2017) 459, 2017.

Abstract
Normalized double-differential cross sections for top quark pair (t t-bar) production are measured in pp collisions at a centre-of-mass energy of 8 TeV with the CMS experiment at the LHC. The analyzed data correspond to an integrated luminosity of 19.7 inverse femtobarns. The measurement is performed in the dilepton e+/- mu-/+ final state. The t t-bar cross section is determined as a function of various pairs of observables characterizing the kinematics of the top quark and t t-bar system. The data are compared to calculations using perturbative quantum chromodynamics at next-to-leading and approximate next-to-next-to-leading orders. They are also compared to predictions of Monte Carlo event generators that complement fixed-order computations with parton showers, hadronization, and multiple-parton interactions. Overall agreement is observed with the predictions, which is improved when the latest global sets of proton parton distribution functions are used. The inclusion of the measured t t-bar cross sections in a fit of parametrized parton distribution functions is shown to have significant impact on the gluon distribution.

  • Table 5

    Data from Table 5 of preprint arXiv:1703.01630

    10.17182/hepdata.77008.v1/t1

    The measured normalized $t\bar{t}$ double-differential cross sections in different bins of $y(t)$ and $p_{T}(t)$, along with their relative statistical and...

  • Table 6

    Data from Table 6 of preprint arXiv:1703.01630

    10.17182/hepdata.77008.v1/t2

    The correlation matrix of statistical uncertainties for the normalized $t\bar{t}$ double-differential cross sections as a function of $y(t)$ and $p_{T}(t)$....

  • Table 7

    Data from Table 7 of preprint arXiv:1703.01630

    10.17182/hepdata.77008.v1/t3

    Sources and values of the relative systematic uncertainties in percent of the measured normalized $t\bar{t}$ double-differential cross sections as a...

  • Table 8

    Data from Table 8 of preprint arXiv:1703.01630

    10.17182/hepdata.77008.v1/t4

    The measured normalized $t\bar{t}$ double-differential cross sections in different bins of $M(t\bar{t})$ and $y(t)$, along with their relative statistical and...

  • Table 9

    Data from Table 9 of preprint arXiv:1703.01630

    10.17182/hepdata.77008.v1/t5

    The correlation matrix of statistical uncertainties for the normalized $t\bar{t}$ double-differential cross sections as a function of $M(t\bar{t})$ and $y(t)$....

  • Table 10

    Data from Table 10 of preprint arXiv:1703.01630

    10.17182/hepdata.77008.v1/t6

    Sources and values of the relative systematic uncertainties in percent of the measured normalized $t\bar{t}$ double-differential cross sections as a...

  • Table 11

    Data from Table 11 of preprint arXiv:1703.01630

    10.17182/hepdata.77008.v1/t7

    The measured normalized $t\bar{t}$ double-differential cross sections in different bins of $M(t\bar{t})$ and $y(t\bar{t})$, along with their relative statistical and...

  • Table 12

    Data from Table 12 of preprint arXiv:1703.01630

    10.17182/hepdata.77008.v1/t8

    The correlation matrix of statistical uncertainties for the normalized $t\bar{t}$ double-differential cross sections as a function of $M(t\bar{t})$ and $y(t\bar{t})$....

  • Table 13

    Data from Table 13 of preprint arXiv:1703.01630

    10.17182/hepdata.77008.v1/t9

    Sources and values of the relative systematic uncertainties in percent of the measured normalized $t\bar{t}$ double-differential cross sections as a...

  • Table 14

    Data from Table 14 of preprint arXiv:1703.01630

    10.17182/hepdata.77008.v1/t10

    The measured normalized $t\bar{t}$ double-differential cross sections in different bins of $M(t\bar{t})$ and $\Delta \eta(t, \bar{t})$, along with their relative...

  • Table 15

    Data from Table 15 of preprint arXiv:1703.01630

    10.17182/hepdata.77008.v1/t11

    The correlation matrix of statistical uncertainties for the normalized $t\bar{t}$ double-differential cross sections as a function of $M(t\bar{t})$ and $\Delta...

  • Table 16

    Data from Table 16 of preprint arXiv:1703.01630

    10.17182/hepdata.77008.v1/t12

    Sources and values of the relative systematic uncertainties in percent of the measured normalized $t\bar{t}$ double-differential cross sections as a...

  • Table 17

    Data from Table 17 of preprint arXiv:1703.01630

    10.17182/hepdata.77008.v1/t13

    The measured normalized $t\bar{t}$ double-differential cross sections in different bins of $M(t\bar{t})$ and $p_{T}(t\bar{t})$, along with their relative statistical and...

  • Table 18

    Data from Table 18 of preprint arXiv:1703.01630

    10.17182/hepdata.77008.v1/t14

    The correlation matrix of statistical uncertainties for the normalized $t\bar{t}$ double-differential cross sections as a function of $M(t\bar{t})$ and $p_{T}(t\bar{t})$....

  • Table 19

    Data from Table 19 of preprint arXiv:1703.01630

    10.17182/hepdata.77008.v1/t15

    Sources and values of the relative systematic uncertainties in percent of the measured normalized $t\bar{t}$ double-differential cross sections as a...

  • Table 20

    Data from Table 20 of preprint arXiv:1703.01630

    10.17182/hepdata.77008.v1/t16

    The measured normalized $t\bar{t}$ double-differential cross sections in different bins of $M(t\bar{t})$ and $\Delta \phi(t, \bar{t})$, along with their relative...

  • Table 21

    Data from Table 21 of preprint arXiv:1703.01630

    10.17182/hepdata.77008.v1/t17

    The correlation matrix of statistical uncertainties for the normalized $t\bar{t}$ double-differential cross sections as a function of $M(t\bar{t})$ and $\Delta...

  • Table 22

    Data from Table 22 of preprint arXiv:1703.01630

    10.17182/hepdata.77008.v1/t18

    Sources and values of the relative systematic uncertainties in percent of the measured normalized $t\bar{t}$ double-differential cross sections as a...

Loading Data...

Ask a Question


Your question will be emailed to those involved with the submission. Please mention the relevant table.


Please log in to HEPData to send a question.