Search for anomalous couplings in boosted WW/WZ -> l upsilon q(q)over-bar production in proton-proton collisions at root s=8TeV

Thumbnail Image
Journal Title
Journal ISSN
Volume Title

This Letter presents a search for new physics manifested as anomalous triple gauge boson couplings in WW and WZ diboson production in proton-proton collisions. The search is performed using events containing a W boson that decays leptonically and a W or Z boson whose decay products are merged into a single reconstructed jet. The data, collected at (\sqrt{s}) = 8 TeV with the CMS detector at the LHC, correspond to an integrated luminosity of 19 fb⁻¹. No evidence for anomalous triple gauge couplings is found and the following 95% confidence level limits are set on their values: (\lambda([-0.011, 0.011), \Delta ᴋ_{\gamma} ([-0.044, 0.063)), and (\Delta g_{1}^{Z} ([-0.0087,0.024])). These limits are also translated into their effective field theory equivalents: (c_{WWW}/\Lambda^{2} ([-2.7, 2.7] TeV^{-2}), c_{B}/\Lambda^{2} ([-14, 17] TeV^{-2})), and (c_{W}/\Lambda^{2} ([-2.0, 5.7] TeV^{-2})).

CMS, Physics, aTGC, Astronomy & Astrophysics, Physics, Nuclear, Physics, Particles & Fields
Sirunyan, A. M., Tumasyan, A., Adam, W., Asilar, E., Bergauer, T., Brandstetter, J., Brondolin, E., Dragicevic, M., Erö, J., Flechl, M., Friedl, M., Frühwirth, R., Ghete, V. M., Hartl, C., Hörmann, N., Hrubec, J., Jeitler, M., König, A., Krätschmer, I., … Woods, N. (2017). Search for anomalous couplings in boosted WW/WZ→ℓνqq‾ production in proton–proton collisions at s=8 TeV. In Physics Letters B (Vol. 772, pp. 21–42). Elsevier BV.