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Determination of the strong coupling constant $\alpha_s$ from transverse energy-energy correlations in multijet events at $\sqrt{s} = 8$ TeV using the ATLAS detector

The ATLAS collaboration
No Journal Information, 2017

Abstract (data abstract)
CERN-LHC. Measurements of transverse energy-energy correlations and their associated asymmetries in multi-jet events using the ATLAS detector at the LHC are presented. The data used correspond to an integrated luminosity of 20.3 fb$^{-1}$. The results are presented in bins of the scalar sum of the transverse momenta of the two leading jets, unfolded to the particle level and compared to the expectations from Monte Carlo simulations. A comparison with next-to-leading order perturbative QCD is also performed, showing an excellent agreement within the uncertainties. From this comparison, the value of the strong coupling constant is extracted for different energy regimes, thus testing the running of $\alpha_s(\mu)$ predicted in QCD up to scales over 1 TeV. From a global fit to the transverse energy-energy correlation distributions, we obtain $\alpha_s(m_Z) = 0.1162 \pm 0.0011 \mbox{ (exp.)}^{+0.0084}_{-0.0070} \mbox{ (theo.)}$, while the global fit to the asymmetry distributions yields a value of $\alpha_s(m_Z) = 0.1196 \pm 0.0013 \mbox{ (exp.)}^{+0.0075}_{-0.0045} \mbox{ (theo.)}$.

  • Table 1

    Data from Table 1 of appendix

    10.17182/hepdata.77269.v1/t1

    TEEC function for 800 GeV < HT2 < 850 GeV

  • Table 2

    Data from Table 2 of appendix

    10.17182/hepdata.77269.v1/t2

    ATEEC function for 800 GeV < HT2 < 850 GeV

  • Table 3

    Data from Table 3 of appendix

    10.17182/hepdata.77269.v1/t3

    TEEC function for 850 GeV < HT2 < 900 GeV

  • Table 4

    Data from Table 4 of appendix

    10.17182/hepdata.77269.v1/t4

    ATEEC function for 850 GeV < HT2 < 900 GeV

  • Table 5

    Data from Table 5 of appendix

    10.17182/hepdata.77269.v1/t5

    TEEC function for 900 GeV < HT2 < 1000 GeV

  • Table 6

    Data from Table 6 of appendix

    10.17182/hepdata.77269.v1/t6

    ATEEC function for 900 GeV < HT2 < 1000 GeV

  • Table 7

    Data from Table 7 of appendix

    10.17182/hepdata.77269.v1/t7

    TEEC function for 1000 GeV < HT2 < 1100 GeV

  • Table 8

    Data from Table 8 of appendix

    10.17182/hepdata.77269.v1/t8

    ATEEC function for 1000 GeV < HT2 < 1100 GeV

  • Table 9

    Data from Table 9 of appendix

    10.17182/hepdata.77269.v1/t9

    TEEC function for 1100 GeV < HT2 < 1400 GeV

  • Table 10

    Data from Table 10 of appendix

    10.17182/hepdata.77269.v1/t10

    ATEEC function for 1100 GeV < HT2 < 1400 GeV

  • Table 11

    Data from Table 11 of appendix

    10.17182/hepdata.77269.v1/t11

    TEEC function for HT2 > 1400 GeV

  • Table 12

    Data from Table 12 of appendix

    10.17182/hepdata.77269.v1/t12

    ATEEC function for HT2 > 1400 GeV

  • Table 13

    Data from Table 2

    10.17182/hepdata.77269.v1/t13

    alphaS(mZ) values from TEEC fits

  • Table 14

    Data from Table 3

    10.17182/hepdata.77269.v1/t14

    alphaS(Q) values from TEEC fits

  • Table 15

    Data from Table 5

    10.17182/hepdata.77269.v1/t15

    alphaS(mZ) values from ATEEC fits

  • Table 16

    Data from Table 6

    10.17182/hepdata.77269.v1/t16

    alphaS(Q) values from ATEEC fits

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