Determination of spin and parity of the Higgs boson in the $WW^*\rightarrow e \nu \mu \nu $ decay channel with the ATLAS detector

Philip James Clark, Christos Leonidopoulos, Victoria Jane Martin, Corrinne Mills, Atlas Collaboration

Research output: Contribution to journalArticlepeer-review

Abstract

Studies of the spin and parity quantum numbers of the Higgs boson in the $WW^\ast \to e \nu \mu \nu$ final state are presented, based on proton-proton collision data collected by the ATLAS detector at the Large Hadron Collider, corresponding to an integrated luminosity of 20.3 fb$^{-1}$ at a centre-of-mass energy of $\sqrt{s}=8$ TeV. The Standard Model spin-parity $J^{CP} = 0^{++}$ hypothesis is compared with alternative hypotheses for both spin and CP. The case where the observed resonance is a mixture of the Standard-Model-like Higgs boson and CP-even ($J^{CP} = 0^{++}$) or CP-odd ($J^{CP} = 0^{+-}$) Higgs boson in scenarios beyond the Standard Model is also studied. The data are found to be consistent with the Standard Model prediction and limits are placed on alternative spin and CP hypotheses, including CP mixing in different scenarios.
Original languageEnglish
Article numberAad:2015rwa
Pages (from-to)231
JournalEuropean Physical Journal C
VolumeC75
Issue number5
DOIs
Publication statusPublished - 27 May 2015

Fingerprint

Dive into the research topics of 'Determination of spin and parity of the Higgs boson in the $WW^*\rightarrow e \nu \mu \nu $ decay channel with the ATLAS detector'. Together they form a unique fingerprint.

Cite this