Bibcode
Sirunyan, A. M.; Tumasyan, A.; Adam, W.; Ambrogi, F.; Asilar, E.; Bergauer, T.; Brandstetter, J.; Brondolin, E.; Dragicevic, M.; Erö, J.; Flechl, M.; Friedl, M.; Frühwirth, R.; Ghete, V. M.; Grossmann, J.; Hrubec, J.; Jeitler, M.; König, A.; Krammer, N.; Krätschmer, I.; Liko, D.; Madlener, T.; Mikulec, I.; Pree, E.; Rabady, D.; Rad, N.; Rohringer, H.; Schieck, J.; Schöfbeck, R.; Spanring, M.; Spitzbart, D.; Waltenberger, W.; Wittmann, J.; Wulz, C.-E.; Zarucki, M.; Chekhovsky, V.; Mossolov, V.; Suarez Gonzalez, J.; De Wolf, E. A.; Di Croce, D.; Janssen, X.; Lauwers, J.; Van Haevermaet, H.; Van Mechelen, P.; Van Remortel, N.; Abu Zeid, S.; Blekman, F.; D'Hondt, J.; De Bruyn, I.; De Clercq, J.; Deroover, K.; Flouris, G.; Lontkovskyi, D.; Lowette, S.; Moortgat, S.; Moreels, L.; Python, Q.; Skovpen, K.; Tavernier, S.; Van Doninck, W.; Van Mulders, P.; Van Parijs, I.; Brun, H.; Clerbaux, B.; De Lentdecker, G.; Delannoy, H.; Fasanella, G.; Favart, L.; Goldouzian, R.; Grebenyuk, A.; Karapostoli, G.; Lenzi, T.; Luetic, J.; Maerschalk, T.; Marinov, A.; Randle-conde, A.; Seva, T.; Vander Velde, C.; Vanlaer, P.; Vannerom, D.; Yonamine, R.; Zenoni, F.; Zhang, F.; Cimmino, A.; Cornelis, T.; Dobur, D.; Fagot, A.; Gul, M.; Khvastunov, I.; Poyraz, D.; Roskas, C.; Salva, S.; Tytgat, M.; Verbeke, W.; Zaganidis, N.; Bakhshiansohi, H.; Bondu, O.; Brochet, S.; Bruno, G.; Caputo, C. et al.
Bibliographical reference
Physics Letters B, Volume 774, p. 682-705.
Advertised on:
11
2017
Citations
69
Refereed citations
43
Description
A measurement of vector boson scattering and constraints on anomalous
quartic gauge couplings from events with two Z bosons and two jets are
presented. The analysis is based on a data sample of proton-proton
collisions at √{ s } = 13 TeV collected with the CMS detector and
corresponding to an integrated luminosity of 35.9 fb-1. The
search is performed in the fully leptonic final state ZZ →
ℓℓℓ‧ℓ‧, where ℓ
,ℓ‧ = e or μ. The electroweak production of two
Z bosons in association with two jets is measured with an observed
(expected) significance of 2.7 (1.6) standard deviations. A fiducial
cross section for the electroweak production is measured to be
σEW (pp → ZZ jj →
ℓℓℓ‧ℓ‧ jj)
=0.40-0.16+0.21(stat)
-0.09+0.13 (syst) fb, which is consistent with the
standard model prediction. Limits on anomalous quartic gauge couplings
are determined in terms of the effective field theory operators T0, T1,
T2, T8, and T9. This is the first measurement of vector boson scattering
in the ZZ channel at the LHC.