Spin-flavor entanglement in Lambda_b to Lambda D decays supplies a method to extract the CKM weak phase gamma with uncertainty scaling as 1 over the Wootters concurrence.
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The ultimate theoretical error on gamma from B -> D K decays
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abstract
The angle gamma of the standard CKM unitarity triangle can be determined from B -> D K decays with a very small irreducible theoretical error, which is only due to second-order electroweak corrections. We study these contributions and estimate that their impact on the gamma determination is to introduce a shift |delta gamma| <~ O(10^-7), well below any present or planned future experiment.
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Normalizing flows trained on D decay data create a continuous unbinned model of Dalitz plot amplitudes, allowing extraction of gamma from B decay data with successful recovery of injected values in Monte Carlo tests.
A joint fit to LHCb B to D h decays and BESIII quantum-correlated D Dbar data yields gamma = 71.3 plus or minus 5.0 degrees, the most precise measurement to date.
A novel model-independent approach with per-event phase-space weights on combined BESIII and LHCb data measures the CKM angle γ as (71.3 ± 5.0)° in B± → D(→ K0S h'+h'-) h± decays.
BESIII provides an updated model-independent measurement of strong-phase differences in D0 and bar{D}0 decays to K_S/L^0 pi^+ pi^- using quantum-correlated data, claimed to be the most precise.
The CKM angle γ is measured to be (68.1 ± 6.7)° from CP violation observed in the Dalitz plots of B± → DK± and B± → Dπ± decays with D → KS0π+π− and KS0K+K−.
The FCC feasibility study describes how a staged electron-positron and hadron collider could deliver precision measurements on the Higgs, electroweak bosons, and top quark while searching for physics beyond the Standard Model.
citing papers explorer
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Spin-flavor entanglement in $\Lambda_b \to \Lambda D$ and weak phase extraction
Spin-flavor entanglement in Lambda_b to Lambda D decays supplies a method to extract the CKM weak phase gamma with uncertainty scaling as 1 over the Wootters concurrence.
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Unbinned extraction of $\gamma$ from $B\to DK$ with normalizing flows
Normalizing flows trained on D decay data create a continuous unbinned model of Dalitz plot amplitudes, allowing extraction of gamma from B decay data with successful recovery of injected values in Monte Carlo tests.
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Precise measurement of the CKM angle $\gamma$ with a novel approach
A joint fit to LHCb B to D h decays and BESIII quantum-correlated D Dbar data yields gamma = 71.3 plus or minus 5.0 degrees, the most precise measurement to date.
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Measurement of the CKM angle $\gamma$ in $B^{\pm} \rightarrow D(\rightarrow K^{0}_{\rm S} h^{\prime+}h^{\prime-})h^{\pm}$ decays with a novel approach
A novel model-independent approach with per-event phase-space weights on combined BESIII and LHCb data measures the CKM angle γ as (71.3 ± 5.0)° in B± → D(→ K0S h'+h'-) h± decays.
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Updated model-independent measurement of the strong-phase differences between $D^0$ and $\bar{D}^0 \to K^{0}_{S/L}\pi^+\pi^-$ decays
BESIII provides an updated model-independent measurement of strong-phase differences in D0 and bar{D}0 decays to K_S/L^0 pi^+ pi^- using quantum-correlated data, claimed to be the most precise.
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Measurement of $\gamma$ using $B^{\pm}\rightarrow DK^{\pm}$ and $B^{\pm}\rightarrow D\pi^{\pm}$ decays with $D\rightarrow K_{\rm S}^{0}\pi^{+}\pi^{-}$ and $D\rightarrow K_{\rm S}^{0}K^{+}K^{-}$
The CKM angle γ is measured to be (68.1 ± 6.7)° from CP violation observed in the Dalitz plots of B± → DK± and B± → Dπ± decays with D → KS0π+π− and KS0K+K−.
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Future Circular Collider Feasibility Study Report: Volume 1, Physics, Experiments, Detectors
The FCC feasibility study describes how a staged electron-positron and hadron collider could deliver precision measurements on the Higgs, electroweak bosons, and top quark while searching for physics beyond the Standard Model.