A fast track towards the ‘Higgs’ spin and parity Open Access Article First Online: 23 November 2012 Received: 18 September 2012 Revised: 26 October 2012 Accepted: 06 November 2012 DOI :
10.1007/JHEP11(2012)134

Cite this article as: Ellis, J., Hwang, D.S., Sanz, V. et al. J. High Energ. Phys. (2012) 2012: 134. doi:10.1007/JHEP11(2012)134
Abstract 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. Ouranalysisisbasedonsimulationsoftheexperimental 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.

Keywords Higgs Physics Beyond Standard Model Download to read the full article text

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