Interpreting the time-dependent CP asymmetry in B0 → π0KS

Michael Gronau; Yuval Grossman; Jonathan L. Rosner

doi:10.1016/j.physletb.2003.11.015

Interpreting the time-dependent CP asymmetry in B⁰ → π⁰K_S

Michael Gronau, Yuval Grossman, Jonathan L. Rosner

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

46 Scopus citations

Abstract

Flavor SU(3) is used for studying the time-dependent CP asymmetry in B ⁰ → π⁰K_S by relating this process to B⁰ → π⁰π⁰ and B⁰ → K⁺K^-. We calculate correlated bounds on S_πK - sin2β and C_πK, with maximal magnitudes of 0.2 and 0.3, where S_πK and C_πK are coefficients of sin Δmt and cos Δmt in the asymmetry. Stronger upper limits on B⁰ → K⁺K^- are expected to reduce these bounds and to imply nonzero lower limits on these observables. The asymmetry is studied as a function of a strong phase and the weak phase γ.

Original language	English
Pages (from-to)	331-339
Number of pages	9
Journal	Physics Letters, Section B: Nuclear, Elementary Particle and High-Energy Physics
Volume	579
Issue number	3-4
DOIs	https://doi.org/10.1016/j.physletb.2003.11.015
State	Published - 22 Jan 2004
Externally published	Yes

Bibliographical note

Funding Information:
We are grateful to Jim Smith for raising a question which motivated this study. M.G. wishes to thank the SLAC theory group for its kind hospitality. The work of Y.G. is supported in part by a grant from GIF, the German–Israeli Foundation for Scientific Research and Development, by the United States–Israel Binational Science Foundation through grant No. 2000133, by the Israel Science Foundation under grant No. 237/01, by the Department of Energy, contract DE-AC03-76SF00515 and by the Department of Energy under grants No. DE-FG03-92ER40689 and No. DE-FG02-90ER40560.

Funding

We are grateful to Jim Smith for raising a question which motivated this study. M.G. wishes to thank the SLAC theory group for its kind hospitality. The work of Y.G. is supported in part by a grant from GIF, the German–Israeli Foundation for Scientific Research and Development, by the United States–Israel Binational Science Foundation through grant No. 2000133, by the Israel Science Foundation under grant No. 237/01, by the Department of Energy, contract DE-AC03-76SF00515 and by the Department of Energy under grants No. DE-FG03-92ER40689 and No. DE-FG02-90ER40560.

Funders	Funder number
U.S. Department of Energy	DE-AC03-76SF00515, DE-FG03-92ER40689, DE-FG02-90ER40560
German-Israeli Foundation for Scientific Research and Development
United States-Israel Binational Science Foundation	2000133
Israel Science Foundation	237/01

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10.1016/j.physletb.2003.11.015

Cite this

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title = "Interpreting the time-dependent CP asymmetry in B0 → π0KS",

abstract = "Flavor SU(3) is used for studying the time-dependent CP asymmetry in B 0 → π0KS by relating this process to B0 → π0π0 and B0 → K+K-. We calculate correlated bounds on SπK - sin2β and CπK, with maximal magnitudes of 0.2 and 0.3, where SπK and CπK are coefficients of sin Δmt and cos Δmt in the asymmetry. Stronger upper limits on B0 → K+K- are expected to reduce these bounds and to imply nonzero lower limits on these observables. The asymmetry is studied as a function of a strong phase and the weak phase γ.",

author = "Michael Gronau and Yuval Grossman and Rosner, {Jonathan L.}",

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