In:
The European Physical Journal C, Springer Science and Business Media LLC, Vol. 80, No. 1 ( 2020-01)
Abstract:
A measurement is presented of electroweak (EW) production of a $$\mathrm{W} $$ W boson in association with two jets in proton–proton collisions at $$\sqrt{s}=13\,\text {Te}\text {V} $$ s = 13 Te . The data sample was recorded by the CMS Collaboration at the LHC and corresponds to an integrated luminosity of 35.9 $$\,\text {fb}^{-1}$$ fb - 1 . The measurement is performed for the $$\ell \nu $$ ℓ ν jj final state (with $$\ell \nu $$ ℓ ν indicating a lepton–neutrino pair, and j representing the quarks produced in the hard interaction) in a kinematic region defined by invariant mass $$m_\mathrm {jj} 〉 120\,\text {Ge}\text {V} $$ m jj 〉 120 Ge and transverse momenta $$p_\mathrm {T j} 〉 25\,\text {Ge}\text {V} $$ p T j 〉 25 Ge . The cross section of the process is measured in the electron and muon channels yielding $$\sigma _\mathrm {EW}(\mathrm{W} \mathrm {jj})= 6.23 \pm 0.12 \,\text {(stat)} \pm 0.61 \,\text {(syst)} \,\text {pb} $$ σ EW ( W jj ) = 6.23 ± 0.12 (stat) ± 0.61 (syst) pb per channel, in agreement with leading-order standard model predictions. The additional hadronic activity of events in a signal-enriched region is studied, and the measurements are compared with predictions. The final state is also used to perform a search for anomalous trilinear gauge couplings. Limits on anomalous trilinear gauge couplings associated with dimension-six operators are given in the framework of an effective field theory. The corresponding 95% confidence level intervals are $$-2.3 〈 c_{{\mathrm{W} \mathrm{W} \mathrm{W}}}/\varLambda ^2 〈 2.5\,\text {Te}\text {V} ^{-2}$$ - 2.3 〈 c W W W / Λ 2 〈 2.5 Te - 2 , $$-8.8 〈 c_{\mathrm{W}}/\varLambda ^2 〈 16\,\text {Te}\text {V} ^{-2}$$ - 8.8 〈 c W / Λ 2 〈 16 Te - 2 , and $$-45 〈 c_{\mathrm{B}}/\varLambda ^2 〈 46\,\text {Te}\text {V} ^{-2}$$ - 45 〈 c B / Λ 2 〈 46 Te - 2 . These results are combined with the CMS EW $$\mathrm{Zjj} $$ Zjj analysis, yielding the constraint on the $$c_{{\mathrm{W} \mathrm{W} \mathrm{W}}}$$ c W W W coupling: $$-1.8 〈 c_{{\mathrm{W} \mathrm{W} \mathrm{W}}}/\varLambda ^2 〈 2.0\,\text {Te}\text {V} ^{-2}$$ - 1.8 〈 c W W W / Λ 2 〈 2.0 Te - 2 .
Type of Medium:
Online Resource
ISSN:
1434-6044
,
1434-6052
DOI:
10.1140/epjc/s10052-019-7585-7
Language:
English
Publisher:
Springer Science and Business Media LLC
Publication Date:
2020
detail.hit.zdb_id:
1397769-6
detail.hit.zdb_id:
1459069-4
