Journal
PHYSICS LETTERS B
Volume 820, Issue -, Pages -Publisher
ELSEVIER
DOI: 10.1016/j.physletb.2021.136537
Keywords
CP violation; Multi-body decay; Heavy meson; B meson; D meson
Funding
- National Natural Science Foundation of China [11705081]
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The FBI-CPA is a novel observable for measuring CP asymmetry in multi-body decays of heavy mesons. It can isolate the CP asymmetry associated with interference of different wave amplitudes and effectively double the statistics compared to conventional methods. It is suggested to perform measurements of FBI-CPA in three-body decay channels of charm and beauty mesons.
A novel observable measuring the CP asymmetry in multi-body decays of heavy mesons, which is called the forward-backward asymmetry induced CP asymmetry (FBI-CPA), A(CP)(FB), is introduced. This observable has the dual advantages that 1) it can isolate the CP asymmetry associated with the interference of the S- and P-wave amplitude from that associated with the S- or P-wave amplitude alone; 2) it can effectively almost double the statistics comparing to the conventionally defined regional CP asymmetry. We also suggest to perform the measurements of FBI-CPA in some three-body decay channels of charm and beauty mesons. (C) 2021 Published by Elsevier B.V.
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