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Boost to h→Zγ : from LHC to future e+e− colliders.

No, Jose Miguel and Spannowsky, Michael (2017) 'Boost to h→Zγ : from LHC to future e+e− colliders.', Physical review D., 95 (1). 075027.


A precise measurement of the Higgs h→Zγ decay is very challenging at the LHC, due to the very low %SM h→Zγ(Z→ℓℓ) branching fraction and the shortage of kinematic handles to suppress the large SM Zγ background. We show how such a measurement would be significantly improved by considering Higgs production in association with a hard jet. We compare the prospective HL-LHC sensitivity in this channel with other Higgs production modes where h is fairly boosted, e.g.~weak boson fusion, and also to the potential h→Zγ measurement achievable with a future e+e− circular collider ({\sl fcc-ee}). Finally, we discuss new physics implications of a precision measurement of h→Zγ.

Item Type:Article
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Publisher statement:Reprinted with permission from the American Physical Society: Physical Review D 95, 075027 © (2017) 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.
Date accepted:No date available
Date deposited:26 May 2017
Date of first online publication:21 April 2017
Date first made open access:26 May 2017

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