Maximizing the physics potential of B±→π±μ+μ− decays

Marshall, Alexander Mclean; McCann, Michael Andrew; Patel, Mitesh; Petridis, Konstantinos A.; Reboud, Méril; van Dyk, Danny

Abstract

We present a method that maximizes the experimental sensitivity to new physics contributions in 𝐵±→𝜋±⁢𝜇+⁢𝜇− decays. This method relies on performing an unbinned maximum likelihood fit to both the measured dimuon 𝑞2 distribution of 𝐵±→𝜋±⁢𝜇+⁢𝜇− decays, and theory calculations at spacelike 𝑞2, where QCD predictions are most reliable. Using known properties of the decay amplitude we employ a dispersion relation to describe the nonlocal hadronic contributions across spacelike and time like 𝑞2 regions. The fit stability and the sensitivity to new physics couplings and new sources of 𝐶⁢𝑃-violation are studied for current and future data-taking scenarios, with the LHCb experiment as an example. The proposed method offers a precise and reliable way to search for new physics in these decays.

Citation

Marshall, A. M., McCann, M. A., Patel, M., Petridis, K. A., Reboud, M., & van Dyk, D. (2024). Maximizing the physics potential of B±→π±μ+μ− decays. Physical Review D, 109(11), Article 116013. https://doi.org/10.1103/physrevd.109.116013

• Journal Article Type: Article
• Acceptance Date: May 9, 2024
• Online Publication Date: Jun 12, 2024
• Publication Date: Jun 12, 2024
• Deposit Date: Jul 31, 2024
• Publicly Available Date: Jul 31, 2024
• Journal: Physical Review D
• Print ISSN: 2470-0010
• Electronic ISSN: 2470-0029
• Publisher: American Physical Society
• Peer Reviewed: Peer Reviewed
• Volume: 109
• Issue: 11
• Article Number: 116013
• DOI: https://doi.org/10.1103/physrevd.109.116013
• Public URL: https://durham-repository.worktribe.com/output/2641996