Jet-associated resonance spectroscopy

Englert, Christoph; Ferretti, Gabriele; Spannowsky, Michael

Abstract

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.

Citation

Englert, C., Ferretti, G., & Spannowsky, M. (2017). Jet-associated resonance spectroscopy. The European Physical Journal C, 77(12), Article 842. https://doi.org/10.1140/epjc/s10052-017-5416-2

• 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
• DOI: https://doi.org/10.1140/epjc/s10052-017-5416-2
• Public URL: https://durham-repository.worktribe.com/output/1355344