Search for ZZ Resonances in the 2ℓ2ν Final State in Proton-Proton Collisions at 13 TeV
Journal of High Energy Physics 2018
Viesturs Veckalns, CERN international group of authors

A search for heavy resonances decaying to a pair of Z bosons is performed using data collected with the CMS detector at the LHC. Events are selected by requiring two oppositely charged leptons (electrons or muons), consistent with the decay of a Z boson, and large missing transverse momentum, which is interpreted as arising from the decay of a second Z boson to two neutrinos. The analysis uses data from proton-proton collisions at a center-of-mass energy of 13 TeV, corresponding to an integrated luminosity of 35.9 fb−1. The hypothesis of a spin-2 bulk graviton (X) decaying to a pair of Z bosons is examined for 600 ≤ mX ≤ 2500 GeV and upper limits at 95% confidence level are set on the product of the production cross section and branching fraction of X → ZZ ranging from 100 to 4 fb. For bulk graviton models characterized by a curvature scale parameter k˜ = 0.5 in the extra dimension, the region mXOpenSPiltSPi 800 GeV is excluded, providing the most stringent limit reported to date. Variations of the model considering the possibility of a wide resonance produced exclusively via gluon-gluon fusion or q q ¯ annihilation are also examined.[Figure not available: see fulltext.].


Atslēgas vārdi
Beyond Standard Model, Hadron-Hadron scattering (experiments)
DOI
10.1007/JHEP03(2018)003
Hipersaite
https://link.springer.com/article/10.1007%2FJHEP03%282018%29003

Veckalns, V., international group of authors, C. Search for ZZ Resonances in the 2ℓ2ν Final State in Proton-Proton Collisions at 13 TeV. Journal of High Energy Physics, 2018, Vol.2018, Iss.3, 1.-10.lpp. ISSN 1126-6708. e-ISSN 1029-8479. Pieejams: doi:10.1007/JHEP03(2018)003

Publikācijas valoda
English (en)
RTU Zinātniskā bibliotēka.
E-pasts: uzzinas@rtu.lv; Tālr: +371 28399196