Search for high-mass exclusive γγWW and γγZZ production in proton-proton collisions at s = 13 TeV

The CMS & TOTEM collaborations
JHEP 07 (2023) 229, 2023.

Abstract (data abstract)
A search is performed for exclusive high-mass γγWW and γγZZ production in proton-proton collisions using intact forward protons reconstructed in near-beam detectors, with both weak bosons decaying into boosted and merged jets. The analysis is based on a sample of proton-proton collisions collected by the CMS and TOTEM experiments at s=13~TeV, corresponding to an integrated luminosity of 100~fb1. No excess above the standard model background prediction is observed, and upper limits are set on the pppWWp and pppZZp cross sections in a fiducial region defined by the diboson invariant mass m(VV)>1~TeV (with V=W,Z) and proton fractional momentum loss 0.04<ξ<0.20. The results are interpreted as new limits on dimension-6 and dimension-8 anomalous quartic gauge couplings.

  • a0W Limit

    Data from Figure 8

    10.17182/hepdata.135991.v1/t1

    Expected and observed upper limits on the AQGC operators a0W/Λ2, with no unitarization. The y axis shows the limit on...

  • aCW Limit

    Data from Figure 8

    10.17182/hepdata.135991.v1/t2

    Expected and observed upper limits on the AQGC operators aCW/Λ2, with no unitarization. The y axis shows the limit on...

  • a0Z Limit

    Data from Figure 8

    10.17182/hepdata.135991.v1/t3

    Expected and observed upper limits on the AQGC operators a0Z/Λ2, with no unitarization. The y axis shows the limit on...

  • aCZ Limit

    Data from Figure 8

    10.17182/hepdata.135991.v1/t4

    Expected and observed upper limits on the AQGC operators aCZ/Λ2, with no unitarization. The y axis shows the limit on...

  • Limits on LEP-like dimension-6 AQGC parameters

    Data from Table 3

    10.17182/hepdata.135991.v1/t5

    Limits on LEP-like dimension-6 anomalous quartic gauge coupling parameters, with and without unitarization via a clipping procedure.

  • Limits on dimension-8 operators - vanishing WWZγ coupling

    Data from Table 4

    10.17182/hepdata.135991.v1/t6

    Conversion of limits on a0W to dimension-8 fM,i operators, using the assumption of vanishing WWZγ couplings to eliminate some parameters....

  • Limits on dimension-8 operators - all other couplings are zero.

    Data from Table 5

    10.17182/hepdata.135991.v1/t7

    Conversion of limits on a0W and aCW to dimension-8 fM,i operators, using the assumption that all fM,i except one are...

  • WW 2D limit plot

    Data from Figure 9

    10.17182/hepdata.135991.v1/t8

    {Expected and observed limits in the two-dimensional plane of a0W/Λ2 vs. aCW/Λ2. The limits are described by analytical ellipses of...

  • WW 2D clipped limit plot

    Data from Figure 9

    10.17182/hepdata.135991.v1/t9

    {Expected and observed limits in the two-dimensional plane of a0W/Λ2 vs. aCW/Λ2 with unitarization imposed by clipping the signal model...

  • ZZ 2D limit plot

    Data from Figure 9

    10.17182/hepdata.135991.v1/t10

    {Expected and observed limits in the two-dimensional plane of a0Z/Λ2 vs. aCZ/Λ2. The limits are described by analytical ellipses of...

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