Determining the quantum numbers of simplified models in tt¯X production at the LHC

Dolan, Matthew J.; Spannowsky, Michael; Wang, Qi; Yu, Zhao-Huan

Abstract

Simplified models provide an avenue for characterizing and exploring new physics for large classes of UV theories. In this article we study the ability of the LHC to probe the spin and parity quantum numbers of a new light resonance X which couples predominantly to the third generation quarks in a variety of simplified models through the t¯tX channel. After evaluating the LHC discovery potential for X, we suggest several kinematic variables sensitive to the spin and CP properties of the new resonance. We show how an analysis exploiting differential distributions in the semileptonic channel can discriminate among various possibilities. We find that the potential to discriminate a scalar from a pseudoscalar or (axial) vector to be particularly promising.

Citation

Dolan, M. J., Spannowsky, M., Wang, Q., & Yu, Z. (2016). Determining the quantum numbers of simplified models in tt¯X production at the LHC. Physical Review D, 94(1), Article 015025. https://doi.org/10.1103/physrevd.94.015025

• Journal Article Type: Article
• Acceptance Date: Jun 13, 2016
• Online Publication Date: Jul 21, 2016
• Publication Date: Jul 21, 2016
• Deposit Date: Nov 10, 2016
• Publicly Available Date: Jan 26, 2017
• Journal: Physical Review D
• Print ISSN: 2470-0010
• Electronic ISSN: 2470-0029
• Publisher: American Physical Society
• Peer Reviewed: Peer Reviewed
• Volume: 94
• Issue: 1
• Article Number: 015025
• DOI: https://doi.org/10.1103/physrevd.94.015025
• Public URL: https://durham-repository.worktribe.com/output/1400980