Effects of K0-K̄0 mixing on determining γ from B± → DK±

Yuval Grossman; Michael Savastio

doi:10.1007/JHEP03(2014)008

Effects of K⁰-K̄⁰ mixing on determining γ from B^± → DK^±

Yuval Grossman, Michael Savastio

Cornell University

Research output: Contribution to journal › Article › peer-review

14 Scopus citations

Abstract

The decay B ^± → DK ^± followed by the subsequent decay of the D meson into final states involving a neutral kaon can be used to determine the CKM angle γ. We study CP violation effects due to mixing and decay of the final state kaon. We find that ignoring these effects produces a shift in γ of order Ïμ _K /r _B, an enhancement of 1/r _B compared to the naive expectation. We then show how to take these effects into account such that, in principle, they will not introduce any theoretical error in the extraction of γ.

Original language	English
Article number	8
Journal	Journal of High Energy Physics
Volume	2014
Issue number	3
DOIs	https://doi.org/10.1007/JHEP03(2014)008
State	Published - Mar 2014
Externally published	Yes

Keywords

B-Physics
CP violation
Kaon Physics

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10.1007/JHEP03(2014)008

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abstract = "The decay B ± → DK ± followed by the subsequent decay of the D meson into final states involving a neutral kaon can be used to determine the CKM angle γ. We study CP violation effects due to mixing and decay of the final state kaon. We find that ignoring these effects produces a shift in γ of order {\"I}μ K /r B, an enhancement of 1/r B compared to the naive expectation. We then show how to take these effects into account such that, in principle, they will not introduce any theoretical error in the extraction of γ.",

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AB - The decay B ± → DK ± followed by the subsequent decay of the D meson into final states involving a neutral kaon can be used to determine the CKM angle γ. We study CP violation effects due to mixing and decay of the final state kaon. We find that ignoring these effects produces a shift in γ of order Ïμ K /r B, an enhancement of 1/r B compared to the naive expectation. We then show how to take these effects into account such that, in principle, they will not introduce any theoretical error in the extraction of γ.

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KW - CP violation

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Effects of K⁰-K̄⁰ mixing on determining γ from B^± → DK^±

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Keywords

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