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Jet-associated resonance spectroscopy

Englert, Christoph; Ferretti, Gabriele; Spannowsky, Michael

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Christoph Englert

Gabriele Ferretti


We present a model-independent study aimed at characterising the nature of possible resonances in the jetphoton or jet-Z final state at hadron colliders. Such resonances are expected in many models of compositeness and would be a clear indication of new physics. At leading order, in the narrow width approximation, the matrix elements are parameterised by just a few constants describing the coupling of the various helicities to the resonance. We present the full structure of such amplitudes up to spin 2 and use them to simulate relevant kinematic distributions that could serve to constrain the coupling structure. This also generalises the signal generation strategy that is currently pursued by ATLAS and CMS to the most general case in the considered channels. While the determination of the P/CP properties of the interaction seems to be out of reach within this framework, there is a wealth of information to be gained about the spin of the resonance and the relative couplings of the helicities.


Englert, C., Ferretti, G., & Spannowsky, M. (2017). Jet-associated resonance spectroscopy. The European Physical Journal C, 77(12), Article 842.

Journal Article Type Article
Acceptance Date Nov 25, 2017
Online Publication Date Dec 7, 2017
Publication Date Dec 1, 2017
Deposit Date Jun 19, 2017
Publicly Available Date Jan 4, 2018
Journal European Physical Journal C: Particles and Fields
Print ISSN 1434-6044
Electronic ISSN 1434-6052
Publisher SpringerOpen
Peer Reviewed Peer Reviewed
Volume 77
Issue 12
Article Number 842


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Copyright Statement
© The Author(s) 2017.<br /> This article is distributed under the terms of the Creative Commons Attribution 4.0 International License (, which permits unrestricted use, distribution, and reproduction in any medium, provided you give appropriate credit to the original author(s) and the source, provide a link to the Creative Commons license, and indicate if changes were made.

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