Using [Formula presented] decays to determine the [Formula presented] angles α and γ

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28 Citations (Scopus)

Abstract

Dighe, Gronau, and Rosner have shown that, by assuming SU(3) flavor symmetry and first-order SU(3) breaking, it is possible to extract the (Formula presented) angles α and γ from measurements of the decay rates of (Formula presented) (Formula presented) and (Formula presented) along with their charge-conjugate processes. We extend their analysis to include the SU(3)-related decays (Formula presented) (Formula presented) and (Formula presented) There are several advantages to this extension: discrete ambiguities are removed, fewer assumptions are necessary, and the method works even if all strong phases vanish. In addition, we show that γ can be obtained cleanly, with no penguin contamination, by using the two decays (Formula presented) and (Formula presented).

Original languageEnglish
Pages (from-to)4010-4024
Number of pages15
JournalPhysical Review D - Particles, Fields, Gravitation and Cosmology
Volume57
Issue number7
DOIs
Publication statusPublished - 1998 Jan 1

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decay
ambiguity
decay rates
contamination
symmetry

All Science Journal Classification (ASJC) codes

  • Nuclear and High Energy Physics
  • Physics and Astronomy (miscellaneous)

Cite this

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title = "Using [Formula presented] decays to determine the [Formula presented] angles α and γ",
abstract = "Dighe, Gronau, and Rosner have shown that, by assuming SU(3) flavor symmetry and first-order SU(3) breaking, it is possible to extract the (Formula presented) angles α and γ from measurements of the decay rates of (Formula presented) (Formula presented) and (Formula presented) along with their charge-conjugate processes. We extend their analysis to include the SU(3)-related decays (Formula presented) (Formula presented) and (Formula presented) There are several advantages to this extension: discrete ambiguities are removed, fewer assumptions are necessary, and the method works even if all strong phases vanish. In addition, we show that γ can be obtained cleanly, with no penguin contamination, by using the two decays (Formula presented) and (Formula presented).",
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AB - Dighe, Gronau, and Rosner have shown that, by assuming SU(3) flavor symmetry and first-order SU(3) breaking, it is possible to extract the (Formula presented) angles α and γ from measurements of the decay rates of (Formula presented) (Formula presented) and (Formula presented) along with their charge-conjugate processes. We extend their analysis to include the SU(3)-related decays (Formula presented) (Formula presented) and (Formula presented) There are several advantages to this extension: discrete ambiguities are removed, fewer assumptions are necessary, and the method works even if all strong phases vanish. In addition, we show that γ can be obtained cleanly, with no penguin contamination, by using the two decays (Formula presented) and (Formula presented).

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