Abstract

A search is presented for three additional operators that would lead to anomalous WW$\gamma$ or WWZ couplings with respect to those in the standard model. They are constrained by studying events with two vector bosons; a W boson decaying to e$\nu$ or $\mu\nu$, and a W or Z boson decaying hadronically, reconstructed as a single, massive, large-radius jet. The search uses a data set of proton-proton collisions at a centre-of-mass energy of 13 TeV, recorded by the CMS experiment at the CERN LHC in 2016, and corresponding to an integrated luminosity of 35.9 fb$^{-1}$. Using the reconstructed diboson invariant mass, 95% confidence intervals are obtained for the anomalous coupling parameters of $-1.58< c_\mathrm{WWW}/\Lambda^2$ $<$ 1.59 TeV$^{-2}$, $-$2.00 $<$ $c_\mathrm{W}/\Lambda^2$ $<$ 2.65 TeV$^{-2}$, and $-$8.78 $<$ $c_\mathrm{B}/\Lambda^2$ $<$ 8.54 TeV$^{-2}$, in agreement with standard model expectations of zero for each parameter. These are the strictest bounds on these parameters to date.

Table 1

Data from Table 4

10.17182/hepdata.91970.v1/t1

aTGC limits on EFT parameters in lepton + jet events in WW and WZ production
Table 2

Data from Table 4

10.17182/hepdata.91970.v1/t2

aTGC limits in LEP parametrization in lepton + jet events in WW and WZ production
Figure 1

Data from Figure 5 (left)

10.17182/hepdata.91970.v1/t3

2-dimensional aTGC limits in lepton + jet events in WW and WZ production
Figure 2

Data from Figure 5 (middle)

10.17182/hepdata.91970.v1/t4

2-dimensional aTGC limits in lepton + jet events in WW and WZ production
Figure 3

Data from Figure 5 (right)

10.17182/hepdata.91970.v1/t5

2-dimensional aTGC limits in lepton + jet events in WW and WZ production
Figure 4

Data from Figure 6 (left)

10.17182/hepdata.91970.v1/t6

2-dimensional aTGC limits in LEP paramatrization in lepton + jet events in WW and WZ production
Figure 5

Data from Figure 6 (middle)

10.17182/hepdata.91970.v1/t7

2-dimensional aTGC limits in LEP paramatrization in lepton + jet events in WW and WZ production
Figure 6

Data from Figure 6 (right)

10.17182/hepdata.91970.v1/t8

2-dimensional aTGC limits in LEP paramatrization in lepton + jet events in WW and WZ production

Table 1

Table 2

Figure 1

Figure 2

Figure 3

Figure 4

Figure 5

Figure 6

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