The shape of spins

Englert, Christoph; Gonçalves, Dorival; Nail, Graeme; Spannowsky, Michael

Abstract

After the discovery of a Higgs-like particle at the LHC, the determination of its spin quantum numbers across different channels will be the next step in arriving at a more precise understanding of the new state and its role in electroweak symmetry breaking. Event shape observables have been shown to provide extremely sensitive observables for the discrimination of the scalar Higgs boson’s CP quantum numbers as a consequence of the different radiation patterns of Higgs production via gluon fusion vs weak boson fusion in the pp→X+2j selection. We show that a similar strategy serves to constrain the spin quantum numbers of the discovered particle as a function of the involved couplings. We also discuss the prospects of applying a similar strategy to future discoveries of Higgs-like particles.

Citation

Englert, C., Gonçalves, D., Nail, G., & Spannowsky, M. (2013). The shape of spins. Physical Review D, 88(1), Article 013016. https://doi.org/10.1103/physrevd.88.013016

• Journal Article Type: Article
• Publication Date: Jul 23, 2013
• Deposit Date: Dec 12, 2014
• Publicly Available Date: May 21, 2015
• Journal: Physical Review D
• Print ISSN: 1550-7998
• Electronic ISSN: 1550-2368
• Publisher: American Physical Society
• Peer Reviewed: Peer Reviewed
• Volume: 88
• Issue: 1
• Article Number: 013016
• DOI: https://doi.org/10.1103/physrevd.88.013016