Search for a massive resonance decaying to qV/VV/VH in hadronic final states

CMS;heavy resonance;limit setting;Physics

Xin, YongjieMaksimovic, Petar ;

Johns Hopkins University

关键词: CMS;    heavy resonance;    limit setting;    Physics;   

Others  :  https://jscholarship.library.jhu.edu/bitstream/handle/1774.2/39536/XIN-DISSERTATION-2015.pdf?sequence=1&isAllowed=y

瑞士|英语

来源: JOHNS HOPKINS DSpace Repository

【 摘 要 】

Two searches for massive resonances decaying into qV/VV/VH final states are presented, in which V denotes W, Z bosons, and H denotes Higgs boson.The data analyzed corresponds to an integrated luminosity of 19.7 fb−1 collected by the CMS detector in proton-proton collisions at √s = 8 TeV. The cutting edge jet substructure algorithms are used to distinguish V and H boson jets from the standard model QCD quark/gluon jets background.Exclusion limits are set at a confidence level of 95% on the production cross sections of: (i) excited quark resonances q* decaying to qW and qZ for masses less than 3.2 TeV and 2.9 TeV, respectively, (ii) a Randall–Sundrum graviton decaying into WW for masses below 1.2 TeV, and (iii) a heavy partner of the W boson W′ decaying into WZ for masses less than 1.7 TeV. In HVT model scenario B, resonance masses are excluded for W′ in the interval [1.0, 1.6] TeV, for Z′ in the intervals [1.0, 1.1] and [1.3,1.5] TeV, and for mass-degenerate W′ and Z′ in the interval [1.0, 1.7] TeV. A model with a bulk gravitonthat decays into WW or ZZ bosons is also studied.