On determining a weak phase from charged B decay asymmetries

Gronau, Michael; Wyler, D.

doi:10.1016/0370-2693(91)90034-n

Cited by 666 publications

(426 citation statements)

References 18 publications

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“…The study is made with data collected by the CLEO-c detector, corresponding to an integrated luminosity of 0.82 fb −1 . We determine the CP -even fraction F + of the decay which makes it potentially useful in a quasi-GLW [4,5] analysis along with other CP eigenstates [6]. Furthermore, this multibody self-conjugate decay occurs via many intermediate resonances, such as K 0 S ω and K * ± ρ ∓ , hence if the strong-phase difference variation over the phase space is known, a GGSZ-style [7,8] analysis to determine γ from this final state alone is possible.…”

Section: Jhep01(2018)082mentioning

confidence: 99%

Quantum-correlated measurements of D → K S 0 π+π−π0 decays and consequences for the determination of the CKM angle γ

Resmi

Libby

Malde

et al. 2018

J. High Energ. Phys.

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We perform quantum-correlated measurements of the decay D → K 0 S π + π − π 0 using a data sample corresponding to an integrated luminosity of 0.82 fb −1 collected at the ψ(3770) resonance by the CLEO-c detector. The value of the CP -even fraction F + is determined to be 0.238 ± 0.012 ± 0.012. The strong-phase differences are also measured in different regions of K 0 S π + π − π 0 phase space by binning around the intermediate resonances present. The potential sensitivity of the results for determining the CKM angle γ from B ± → D(K 0 S π + π − π 0 )K ± decays is also discussed.

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Section: Jhep01(2018)082mentioning

confidence: 99%

Quantum-correlated measurements of D → K S 0 π+π−π0 decays and consequences for the determination of the CKM angle γ

Resmi

Libby

Malde

et al. 2018

J. High Energ. Phys.

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“…Currently, γ is the least-well constrained angle of the UT, and can be determined, for example, using B − → DK − decays, 1 where D represents a superposition of D 0 and D 0 states [3][4][5][6][7][8]. The amplitudes B − → D 0 K − and B − → D 0 K − are overwhelmingly dominated by the tree-level transitions b → u cs and b → c us, respectively, and therefore offer an extremely clean method to measure γ.…”

Section: Jhep01(2018)144mentioning

confidence: 99%

“…3 To describe the interference of D 0 → f and D 0 → f amplitudes integrated over the region i, the bin-averaged sine and cosine are defined,…”

Section: Formalismmentioning

confidence: 99%

Model-independent determination of the strong phase difference between D0 and D ¯ 0 → π + π

Harnew

Naik

Prouvé

et al. 2018

J. High Energ. Phys.

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For the first time, the strong phase difference between D 0 and D 0 → π + π − π + π − amplitudes is determined in bins of the decay phase space. The measurement uses 818 pb −1 of e + e − collision data that is taken at the ψ(3770) resonance and collected by the CLEO-c experiment. The measurement is important for the determination of the CP -violating phase γ in B ± → DK ± (and similar) decays, where the D meson (which represents a superposition of D 0 and D 0 ) subsequently decays to π + π − π + π − . To obtain optimal sensitivity to γ, the phase space of the D → π + π − π + π − decay is divided into bins based on a recent amplitude model of the decay. Although an amplitude model is used to define the bins, the measurements obtained are model-independent. The CP -even fraction of the D → π + π − π + π − decay is determined to be F 4π + = 0.769 ± 0.021 ± 0.010, where the uncertainties are statistical and systematic, respectively. Using simulated B ± → DK ± , D → π + π − π + π − decays, it is estimated that by the end of the current LHC run, the LHCb experiment could determine γ from this decay mode with an uncertainty of (±10 ± 7) • , where the first uncertainty is statistical based on estimated LHCb event yields, and the second is due to the uncertainties on the parameters determined in this paper.

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“…In the Gronau-London-Wyler (GLW) approach [52], these are the relatively rare decays to CP eigenstates such as…”

Section: The Unitarity Angle γ(φ 3 )mentioning

confidence: 99%

CP Violation: Experimental Results in B Decays

Lanceri

2008

Springer Proceedings in Physics

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On determining a weak phase from charged B decay asymmetries

Cited by 666 publications

References 18 publications

Quantum-correlated measurements of D → K S 0 π+π−π0 decays and consequences for the determination of the CKM angle γ

Quantum-correlated measurements of D → K S 0 π+π−π0 decays and consequences for the determination of the CKM angle γ

Model-independent determination of the strong phase difference between D0 and D ¯ 0 → π + π

CP Violation: Experimental Results in B Decays

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