期刊
JOURNAL OF PHYSICS G-NUCLEAR AND PARTICLE PHYSICS
卷 44, 期 8, 页码 -出版社
IOP PUBLISHING LTD
DOI: 10.1088/1361-6471/aa75a5
关键词
CP violation; general statistical methods; multi-body decays; flavour physics
资金
- STFC [ST/J004332/1, ST/K003410/1, ST/N000374/1]
- Science and Technology Facilities Council [ST/J004332/1, ST/K001396/1, ST/K003410/1] Funding Source: researchfish
- STFC [ST/K003410/1, ST/J004332/1, ST/K001396/1] Funding Source: UKRI
Techniques for performing model-independent searches for direct CP violation in three and four-body decays are discussed. Comments on the performance and the optimisation of a binned chi(2) approach and an unbinned approach, known as the energy test, are made. The use of the energy test in the presence of background is also studied. The selection and treatment of the coordinates used to describe the phase-space of the decay are discussed. The conventional model-independent techniques, which test for P-even CP violation, are modified to create a new approach for testing for P-odd CP violation. An implementation of the energy test using graphical processing units. is described.
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