Search for leptophobic Z bosons decaying into four-lepton final states in proton-proton collisions at root s=8 TeV

Autor: Khachatryan, V., Adžić, Petar, Ćirković, Predrag, Devetak, Damir, Đorđević, Miloš, Milošević, Jovan, Reković, Vladimir, Milenović, Predrag
Přispěvatelé: CMS Collaboration (ukupan broj autora: 2256)
Rok vydání: 2017
Předmět:
Zdroj: Physics Letters B
Popis: A search for heavy narrow resonances decaying into four-lepton final states has been performed using proton-proton collision data at root s= 8 TeVcollected by the CMS experiment, corresponding to an integrated luminosity of 19.7fb(-1). No excess of events over the standard model background expectation is observed. Upper limits for a benchmark model on the product of cross section and branching fraction for the production of these heavy narrow resonances are presented. The limit excludes leptophobic Z bosons with masses below 2.5 TeV within the benchmark model. This is the first result to constrain a leptophobic Z resonance in the four-lepton channel. (C) 2017 The Author(s). Published by Elsevier B.V.
Databáze: OpenAIRE