Study of Vector Boson Scattering and Search for New Physics in Events with Two Same-Sign Leptons and Two Jets

Title
Study of Vector Boson Scattering and Search for New Physics in Events with Two Same-Sign Leptons and Two Jets
Authors
김태정
Keywords
HIGGS-BOSON; WEAK INTERACTIONS; HIGH-ENERGIES; MASS; LHC
Issue Date
2015-02
Publisher
AMER PHYSICAL SOC
Citation
PHYSICAL REVIEW LETTERS, v. 114, NO 5, Page. 1-10
Abstract
A study of vector boson scattering in pp collisions at a center-of-mass energy of 8 TeV is presented. The data sample corresponds to an integrated luminosity of 19.4 fb(-1) collected with the CMS detector. Candidate events are selected with exactly two leptons of the same charge, two jets with large rapidity separation and high dijet mass, and moderate missing transverse energy. The signal region is expected to be dominated by electroweak same-sign W-boson pair production. The observation agrees with the standard model prediction. The observed significance is 2.0 standard deviations, where a significance of 3.1 standard deviations is expected based on the standard model. Cross section measurements for (WW +/-)-W-+/- and WZ processes in the fiducial region are reported. Bounds on the structure of quartic vector-boson interactions are given in the framework of dimension-eight effective field theory operators, as well as limits on the production of doubly charged Higgs bosons.
URI
http://journals.aps.org/prl/abstract/10.1103/PhysRevLett.114.051801http://hdl.handle.net/20.500.11754/22329
ISSN
0031-9007; 1079-7114
DOI
http://dx.doi.org/10.1103/PhysRevLett.114.051801
Appears in Collections:
COLLEGE OF NATURAL SCIENCES[S](자연과학대학) > PHYSICS(물리학과) > Articles
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