A fast track towards the `Higgs' spin and parity

Ellis, John, Hwang, Dae Sung, Sanz, Ver and You, Tevong (2012) A fast track towards the `Higgs' spin and parity. Journal of High Energy Physics, 2012 (11). p. 134. ISSN 1029-8479

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The LHC experiments ATLAS and CMS have discovered a new boson that resembles the long-sought Higgs boson: it cannot have spin one, and has couplings to other particles that increase with their masses, but the spin and parity remain to be determined. We show here that the `Higgs' + gauge boson invariant-mass distribution in `Higgs'-strahlung events at the Tevatron or the LHC would be very different under the J P = 0+;0 and 2+ hypotheses. Our analysis is based on simulations of the experimental event selections and cuts using PYTHIA and Delphes, and incorporates statistical samples of `toy' experiments. The observation of `Higgs'-strahlung at the Tevatron and the expected peaking of backgrounds at low invariant masses suggest that this process could provide a fast-track indicator of the `Higgs' spin and parity.

Item Type: Article
Schools and Departments: School of Mathematical and Physical Sciences > Physics and Astronomy
Subjects: Q Science > QC Physics > QC0770 Nuclear and particle physics. Atomic energy. Radioactivity > QC0793 Elementary particle physics
Depositing User: Veronica Sanz
Date Deposited: 24 May 2013 09:12
Last Modified: 07 Mar 2017 12:13
URI: http://srodev.sussex.ac.uk/id/eprint/44852

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