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Prospects for the Measurement of the Unitarity Triangle Angle gamma from B0 to DK+pi- Decays
High Energy Physics - Phenomenology · Submitted 8 Sep 2009
abstract compiled · 2026-09-23 · no language-model review
The authors' main claim This approach appears to be a highly attractive addition to the family of methods that can be used to determine $\gamma$.
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The paper's own sentences, arranged. Each label is drawn from a closed vocabulary; the number beside it is the probability the classifier gave that label. Numbers in the tables are the authors', checked by code. No sentence in this record was written by a model.
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The abstract, sentence by sentence
The potential for a precise measurement of the Unitarity Triangle angle $\gamma$ in future experiments from the decay $B^0 \to DK^{*0}$ is well-known. It has recently been suggested that the sensitivity can be significantly enhanced by analysing the $B^0 \to DK^+\pi^-$ Dalitz plot to extract amplitudes relative to those of the flavour-specific decay $B^0 \to D_2^{*-}K^+$. An extension to this method which includes the case where the neutral $D$ meson is reconstructed in suppressed final states is presented. The sensitivity to $\gamma$ is estimated using this method and compared to that obtained using the $B^0 \to DK^{*0}$ decay alone. Experimental effects, such as background contamination, are also considered. This approach appears to be a highly attractive addition to the family of methods that can be used to determine $\gamma$.
background contribution method result interpretation main claim
| # | sentence | role | the authors' own work | states the main conclusion | strength |
|---|---|---|---|---|---|
| s0 | The potential for a precise measurement of the Unitarity Triangle angle $\gamma$ in future experiments from the decay $B^0 \to DK^{*0}$ is well-known. | background 1.00 | 0.05 | 0.05 | asserted 0.90 |
| s1 | It has recently been suggested that the sensitivity can be significantly enhanced by analysing the $B^0 \to DK^+\pi^-$ Dalitz plot to extract amplitudes relative to those of the flavour-specific decay $B^0 \to D_2^{*-}K^+$. | background 0.60 | 0.06 | 0.17 | hedged possibility 0.94 |
| s2 | An extension to this method which includes the case where the neutral $D$ meson is reconstructed in suppressed final states is presented. | contribution 0.93 | 0.78 | 0.08 | asserted 0.96 |
| s3 | The sensitivity to $\gamma$ is estimated using this method and compared to that obtained using the $B^0 \to DK^{*0}$ decay alone. | method 0.46 | 0.86 | 0.15 | asserted 0.93 |
| s4 | Experimental effects, such as background contamination, are also considered. | method 0.83 | 0.66 | 0.03 | asserted 0.96 |
| s5 | This approach appears to be a highly attractive addition to the family of methods that can be used to determine $\gamma$. | interpretation 1.00 | 0.32 | 0.60 | hedged possibility 0.93 |
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The paper
Original abstract
The potential for a precise measurement of the Unitarity Triangle angle $\gamma$ in future experiments from the decay $B^0 \to DK^{*0}$ is well-known. It has recently been suggested that the sensitivity can be significantly enhanced by analysing the $B^0 \to DK^+\pi^-$ Dalitz plot to extract amplitudes relative to those of the flavour-specific decay $B^0 \to D_2^{*-}K^+$. An extension to this method which includes the case where the neutral $D$ meson is reconstructed in suppressed final states is presented. The sensitivity to $\gamma$ is estimated using this method and compared to that obtained using the $B^0 \to DK^{*0}$ decay alone. Experimental effects, such as background contamination, are also considered. This approach appears to be a highly attractive addition to the family of methods that can be used to determine $\gamma$.
Human review
References
How the literature uses it
12 arXiv papers cite this in 15 sentences
Papers citing it · 12 sentences without a confident label
Cites it as background 3 papers
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Other possibilities include the decays of neutral $B$ mesons, $B^0$ and $B_s$, [ref] , multibody $B$ decays [ref] and $D^*$ or $D^**$ decays [ref] (see also the reviews in [ref] and the current combination of LHCb measurements in [ref] ).
The ultimate theoretical error on gamma from B -> D K decays · Introduction · 0.95
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These include methods to determine the angles $α$, $β$ and $γ$ of the CKM Unitarity Triangle with low theoretical uncertainty from, respectively $→$ [ref] , $→D$ [ref] and $→D$ decays [ref] , among many other potential analyses.
Laura++ : a Dalitz plot fitter · Introduction · 0.89
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Alternatively, one can also use decays of neutral $B^0$ or $B_s^0$ mesons [ref] , multibody $B$ decays [ref] , and $D^*$ or $D^**$ decays [ref] (see also the reviews in [ref] ).
Electroweak effects in the extraction of the CKM angle $\gamma$ from $B \to D \pi$ decays · Introduction · 0.97
What it cites · 22 sentences without a confident label
Builds on 1 paper
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In this paper we extend the method proposed in Ref. [ref] to include also the case where the neutral $D$ meson is reconstructed in suppressed final states.
On the Measurement of the Unitarity Triangle Angle gamma from B^0 -> DK^{*0} Decays · Introduction · 1.00
Uses the method or tool of 4 papers
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A solution is to include doubly-Cabibbo-suppressed $D$ meson decays, as first suggested by Atwood, Dunietz and Soni (ADS) [ref] .
Improved Methods for Observing CP Violation in B+/- --> K+/- D0 and Measuring the CKM Phase gamma · Method · 0.83
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A solution is to include doubly-Cabibbo-suppressed $D$ meson decays, as first suggested by Atwood, Dunietz and Soni (ADS) [ref] .
Enhanced CP Violation with $B\to K D^0 (\overline D^0)$ Modes and Extraction of the CKM Angle gamma · Method · 0.83
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This can be handled by making the following substitutions [ref] : [equation] where $A_c$ and $A_u$ are respectively the amplitudes carrying the phase of the $b̅ →c̅ u s̅$ (Fig. [ref](left)) and of the $b̅ →u̅ c s̅$ (Fig. [ref](right)) transitions, and $δ$ is the strong phase difference between them, all as functions of the Dalitz-plot position $x⃗$.
Improving bounds on $\gamma$ in $B^{\pm} \to DK^{\pm}$ and $B^{\pm,0} \to D X_s^{\pm,0}$ · Method · 0.97
Uses data or values from 6 papers
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The strengths of the $K^*(892)$ and $D^*-_2(2460)$ amplitudes in our model were set by requiring that the fit fractions of these resonances in these regions match the published results [ref] .
Measurement of Branching Fractions and Resonance Contributions for B0 -> D0bar K+ pi- and Search for B0 -> D0 K+ pi- Decays · $B →DKπ$ Dalitz Plot Model · 0.99
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However, the value of $δ_D$ is currently not precisely measured: $δ_D = (-158 ±11)^∘$ [ref] .
Determination of the Strong Phase in D0 -> K+pi- Using Quantum-Correlated Measurements · Results with the Amplitude Analysis · 1.00
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However, the value of $δ_D$ is currently not precisely measured: $δ_D = (-158 ±11)^∘$ [ref] .
Determination of the D0 -> K+pi- Relative Strong Phase Using Quantum-Correlated Measurements in e+e- -> D0 D0bar at CLEO · Results with the Amplitude Analysis · 1.00
Cites as background 3 papers
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It also provides an excellent laboratory to search for effects of physics beyond the Standard Model (see, for example, Refs. [ref] ).
B, D and K decays · Introduction · 0.84
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It also provides an excellent laboratory to search for effects of physics beyond the Standard Model (see, for example, Refs. [ref] ).
New Physics at a Super Flavor Factory · Introduction · 0.84
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It also provides an excellent laboratory to search for effects of physics beyond the Standard Model (see, for example, Refs. [ref] ).
Flavor Physics in the Quark Sector · Introduction · 0.84
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