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  • Open Access

CP violation induced by the real part of the interference term in ρ0−ω mixing

Jin-Zhao Guo1, Gang Lü1,*, and Zhen-Hua Zhang2

  • *Contact author: ganglv66@sina.com
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Phys. Rev. D 114, 013013 – Published 30 July, 2026

DOI: https://doi.org/10.1103/yrj8-pmjp

Abstract

To circumvent the severe numerical cancellations in the standard integrated CP asymmetry (ACP) near the ω mass mω, we propose a modified CP-violating observable ACPℜ, which explicitly highlights the contribution of the real part of the interference term. Subsequently, we employ the three-body hadronic decay B−→π+π−π− within the perturbative QCD approach as a primary case study to validate this theoretical framework. Furthermore, this method naturally eliminates the smooth, sign-preserving continuum background originating from broad scalar resonances like the f0(500). This generalized framework provides clean and robust theoretical guidance for recovering localized CP-violation signals that might otherwise be masked by coarse experimental binning at future high-luminosity colliders.

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Phys. Rev. D 114, 013013– Published 30 July, 2026
  • Received 8 June 2026
  • Accepted 13 July 2026
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Published by the American Physical Society under the terms of the Creative Commons Attribution 4.0 International license. Further distribution of this work must maintain attribution to the author(s) and the published article’s title, journal citation, and DOI. Funded by SCOAP3.

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