A novel unbinned model-independent method to measure the CKM angle gamma in B+- --> DK+- decays with optimised precision
arXiv, 2023
Online
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Zugriff:
We present a novel unbinned method to combine B+- --> DK+- and charm threshold data for the amplitude-model unbiased measurement of the CKM angle gamma in cases where the D meson decays to a three-body final state. The new unbinned approach avoids any kind of integration over the D Dalitz plot, to make optimal use the available information. We verify the method with simulated signal data where the D decays to KS pi+ pi-. Using realistic sample sizes, we find that the new method reaches the statistical precision on gamma of an unbinned model-dependent fit, i.e. as good as possible and better than the widely used model-independent binned approach, without suffering from biases induced by a mis-modeled D decay amplitude.
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A novel unbinned model-independent method to measure the CKM angle gamma in B+- --> DK+- decays with optimised precision
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Autor/in / Beteiligte Person: | Lane, Jake ; Gersabeck, Evelina ; Rademacker, Jonas |
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Veröffentlichung: | arXiv, 2023 |
Medientyp: | unknown |
DOI: | 10.48550/arxiv.2305.10787 |
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