2018
DOI: 10.1007/jhep11(2018)193
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Resolving the ϕ2 (α) ambiguity in B → ρρ

Abstract: I propose an alternative method for measuring the CP violating phase φ 2 (α) without ambiguity in an extended SU(3) flavour symmetry analysis, which can ultimately be achieved by exploiting interference effects between B → AP and B → V V decay channels, where A, V, P indicates an axial-vector, vector and pseudo-scalar meson, respectively. Under certain assumptions on the relevant decays based on current experimental results and minimal theoretical input, I demonstrate with an idealised amplitude model that a p… Show more

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Cited by 8 publications
(20 citation statements)
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References 71 publications
(117 reference statements)
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“…However, armed with knowledge of the B 0 → π + π − π + π − amplitude as suggested in ref. [24], combined with measurements of the B + → K 0 π + π − π + and B 0 → K + π − π + π − amplitudes proposed here, a single solution for φ 2 is also attainable in B → a 1 π.…”
Section: Jhep10(2019)191supporting
confidence: 58%
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“…However, armed with knowledge of the B 0 → π + π − π + π − amplitude as suggested in ref. [24], combined with measurements of the B + → K 0 π + π − π + and B 0 → K + π − π + π − amplitudes proposed here, a single solution for φ 2 is also attainable in B → a 1 π.…”
Section: Jhep10(2019)191supporting
confidence: 58%
“…The original method creating the possibility to remove the isospin-conserving component of this contamination invokes SU(2) arguments in a triangular analysis with input coming from the three B → ππ or ρρ charge configurations for an 8-fold degeneracy in φ 2 [28]. This can be reduced to two solutions if mixing-induced CP violation can be measured in their respective colour-suppressed channels [21] and reduced further to a single solution in B → ρρ if the complex CP violating parameter of B 0 → ρ 0 ρ 0 can be measured directly in a time-dependent, flavour-tagged amplitude analysis [24]. For flavournon-specific channels such as B 0 → ρ ± π ∓ and a ± 1 π ∓ , the original idea was subsequently extended to isospin pentagonal relations [29].…”
Section: Jhep10(2019)191mentioning
confidence: 99%
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