• Open Access

Nonleptonic decays of ΞccΞcπ with ΞcΞc mixing

Chia-Wei Liu and Chao-Qiang Geng
Phys. Rev. D 107, 013006 – Published 19 January 2023

Abstract

Aiming on testing the ΞcΞc mixing, we study the decays of ΞccΞcπ with Ξcc=(Ξcc++,Ξcc+), Ξc=(Ξc()+,Ξc()0) and π=(π+,π0). The soft-meson limit is considered along with the pole model, and the baryon matrix elements are evaluated by the bag model with and without removing the center-of-mass motion (CMM). We find that the four-quark operator matrix elements are about two times larger once the unwanted CMM is removed. We obtain that R=B(Ξcc+Ξc+π+)/B(Ξcc+Ξc+π+)=0.870.11+0.17 and 1.45 with and without removing the CMM, where the former is close to the lower bound and the later is well consistent with R=1.41±0.17±0.10 measured at LHCb. In addition, we show that after including the mixing the up-down asymmetry of α(Ξcc+Ξc()0π+) flips sign. Explicitly, we obtain that α(Ξcc+Ξc+π0)=0.52 and α(Ξcc+Ξc0π+)=0.31 with and without the CMM corrections, respectively, which are all negative if the mixing is absence. As a bonus, a positive value of α(Ξcc+Ξc0π+) in experiments can also serve as the evidence of the W-exchange contributions.

  • Figure
  • Received 15 December 2022
  • Accepted 4 January 2023

DOI:https://doi.org/10.1103/PhysRevD.107.013006

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.

Published by the American Physical Society

Physics Subject Headings (PhySH)

Particles & Fields

Authors & Affiliations

Chia-Wei Liu* and Chao-Qiang Geng

  • School of Fundamental Physics and Mathematical Sciences, Hangzhou Institute for Advanced Study, UCAS, Hangzhou 310024, China and University of Chinese Academy of Sciences, 100190 Beijing, China

  • *chiaweiliu@ucas.ac.cn

Article Text

Click to Expand

References

Click to Expand
Issue

Vol. 107, Iss. 1 — 1 January 2023

Reuse & Permissions
Author publication services for translation and copyediting assistance advertisement

Authorization Required


×
×

Images

×

Sign up to receive regular email alerts from Physical Review D

Reuse & Permissions

It is not necessary to obtain permission to reuse this article or its components as it is available under the terms of the Creative Commons Attribution 4.0 International license. This license permits unrestricted use, distribution, and reproduction in any medium, provided attribution to the author(s) and the published article's title, journal citation, and DOI are maintained. Please note that some figures may have been included with permission from other third parties. It is your responsibility to obtain the proper permission from the rights holder directly for these figures.

×

Log In

Cancel
×

Search


Article Lookup

Paste a citation or DOI

Enter a citation
×