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The shape of spins

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

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Christoph Englert

Dorival Gonçalves

Graeme Nail


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.


Englert, C., Gonçalves, D., Nail, G., & Spannowsky, M. (2013). The shape of spins. Physical Review D, 88(1), Article 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


Published Journal Article (1.3 Mb)

Copyright Statement
Reprinted with permission from the American Physical Society: Physical Review D 88, 013016 © 2013 by the American Physical Society. Readers may view, browse, and/or download material for temporary copying purposes only, provided these uses are for noncommercial personal purposes. Except as provided by law, this material may not be further reproduced, distributed, transmitted, modified, adapted, performed, displayed, published, or sold in whole or part, without prior written permission from the American Physical Society.

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