A novel unbinned model-independent method to measure the CKM angle γ in B ± → DK ± decays with optimised precision
In: Journal of High Energy Physics, Jg. 2023 (2023), Heft 9, S. 1-20
Online
academicJournal
Zugriff:
Abstract We present a novel unbinned method to combine B ± → DK ± and charm threshold data for the amplitude-model unbiased measurement of the CKM angle γ 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 K S π + π − . Using realistic sample sizes, we find that the new method reaches the statistical precision on γ 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 γ 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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Zeitschrift: | Journal of High Energy Physics, Jg. 2023 (2023), Heft 9, S. 1-20 |
Veröffentlichung: | SpringerOpen, 2023 |
Medientyp: | academicJournal |
ISSN: | 1029-8479 (print) |
DOI: | 10.1007/JHEP09(2023)007 |
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