RECORD
Disentangling weak and strong interactions in $B\to K^*(\to K\pi)\pi$ Dalitz-plot analyses
High Energy Physics - Phenomenology · Submitted 5 Apr 2017
abstract compiled · 2026-09-23 · no language-model review
The authors' main claim The current data yields several solutions, which do not fully support the hierarchy of hadronic amplitudes usually expected from theoretical arguments (colour suppression, suppression of electroweak penguins), as illustrated from computations within QCD factorisation.
The compiled record
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.
Open the compiled record
The abstract, sentence by sentence
Dalitz-plot analyses of $B\rightarrow K\pi\pi$ decays provide direct access to decay amplitudes, and thereby weak and strong phases can be disentangled by resolving the interference patterns in phase space between intermediate resonant states. A phenomenological isospin analysis of $B\rightarrow K^*(\rightarrow K\pi)\pi$ decay amplitudes is presented exploiting available amplitude analyses performed at the Babar, Belle and LHCb experiments. A first application consists in constraining the CKM parameters thanks to an external hadronic input. A method, proposed some time ago by two different groups and relying on a bound on the electroweak penguin contribution, is shown to lack the desired robustness and accuracy, and we propose a more alluring alternative using a bound on the annihilation contribution. A second application consists in extracting information on hadronic amplitudes assuming the values of the CKM parameters from a global fit to quark flavour data. The current data yields several solutions, which do not fully support the hierarchy of hadronic amplitudes usually expected from theoretical arguments (colour suppression, suppression of electroweak penguins), as illustrated from computations within QCD factorisation. Some prospects concerning the impact of future measurements at LHCb and Belle II are also presented. Results are obtained with the CKMfitter analysis package, featuring the frequentist statistical approach and using the Rfit scheme to handle theoretical uncertainties.
background contribution method result interpretation main claim
| # | sentence | role | the authors' own work | states the main conclusion | strength |
|---|---|---|---|---|---|
| s0 | Dalitz-plot analyses of $B\rightarrow K\pi\pi$ decays provide direct access to decay amplitudes, and thereby weak and strong phases can be disentangled by resolving the interference patterns in phase space between intermediate resonant states. | background 1.00 | 0.07 | 0.06 | asserted 0.98 |
| s1 | A phenomenological isospin analysis of $B\rightarrow K^*(\rightarrow K\pi)\pi$ decay amplitudes is presented exploiting available amplitude analyses performed at the Babar, Belle and LHCb experiments. | contribution 0.88 | 0.79 | 0.05 | asserted 1.00 |
| s2 | A first application consists in constraining the CKM parameters thanks to an external hadronic input. | contribution 0.98 | 0.74 | 0.07 | asserted 0.95 |
| s3 | A method, proposed some time ago by two different groups and relying on a bound on the electroweak penguin contribution, is shown to lack the desired robustness and accuracy, and we propose a more alluring alternative using a bound on the annihilation contribution. | contribution 0.78 | 0.68 | 0.22 | asserted 1.00 |
| s4 | A second application consists in extracting information on hadronic amplitudes assuming the values of the CKM parameters from a global fit to quark flavour data. | contribution 0.96 | 0.77 | 0.06 | asserted 0.85 |
| s5 | The current data yields several solutions, which do not fully support the hierarchy of hadronic amplitudes usually expected from theoretical arguments (colour suppression, suppression of electroweak penguins), as illustrated from computations within QCD factorisation. | result 0.88 | 0.82 | 0.42 | asserted 0.96 |
| s6 | Some prospects concerning the impact of future measurements at LHCb and Belle II are also presented. | future work 1.00 | 0.61 | 0.03 | hedged possibility 0.52 |
| s7 | Results are obtained with the CKMfitter analysis package, featuring the frequentist statistical approach and using the Rfit scheme to handle theoretical uncertainties. | method 1.00 | 0.75 | 0.02 | asserted 1.00 |
What was examined, and what was not
- arXiv listing abstract v2
- full text
- figures and tables
- references and citing sentences
- relations to other papers
- P abstract
- S sections
- T body sentences
- C citations
- R cross-paper relations
The paper
Original abstract
Dalitz-plot analyses of $B\rightarrow K\pi\pi$ decays provide direct access to decay amplitudes, and thereby weak and strong phases can be disentangled by resolving the interference patterns in phase space between intermediate resonant states. A phenomenological isospin analysis of $B\rightarrow K^*(\rightarrow K\pi)\pi$ decay amplitudes is presented exploiting available amplitude analyses performed at the Babar, Belle and LHCb experiments. A first application consists in constraining the CKM parameters thanks to an external hadronic input. A method, proposed some time ago by two different groups and relying on a bound on the electroweak penguin contribution, is shown to lack the desired robustness and accuracy, and we propose a more alluring alternative using a bound on the annihilation contribution. A second application consists in extracting information on hadronic amplitudes assuming the values of the CKM parameters from a global fit to quark flavour data. The current data yields several solutions, which do not fully support the hierarchy of hadronic amplitudes usually expected from theoretical arguments (colour suppression, suppression of electroweak penguins), as illustrated from computations within QCD factorisation. Some prospects concerning the impact of future measurements at LHCb and Belle II are also presented. Results are obtained with the CKMfitter analysis package, featuring the frequentist statistical approach and using the Rfit scheme to handle theoretical uncertainties.
Human review
References
How the literature uses it
3 arXiv papers cite this in 3 sentences
What it cites · 40 sentences without a confident label
Uses the method or tool of 3 papers
-
We use the Rfit scheme to handle theoretical uncertainties [ref] (in particular for the hadronic parameters and the $1/m_b$ power-suppressed contributions), and we compute only ratios of hadronic amplitudes using QCD factorisation.
Modelling theoretical uncertainties in phenomenological analyses for particle physics · Comparison with theoretical expectations · 0.94
-
We use the Rfit scheme to handle theoretical uncertainties [ref] (in particular for the hadronic parameters and the $1/m_b$ power-suppressed contributions), and we compute only ratios of hadronic amplitudes using QCD factorisation.
Current status of the Standard Model CKM fit and constraints on $\Delta F=2$ New Physics · Comparison with theoretical expectations · 0.94
-
We use the Rfit scheme to handle theoretical uncertainties [ref] (in particular for the hadronic parameters and the $1/m_b$ power-suppressed contributions), and we compute only ratios of hadronic amplitudes using QCD factorisation.
CP Violation and the CKM Matrix: Assessing the Impact of the Asymmetric B Factories · Comparison with theoretical expectations · 0.94
Uses data or values from 12 papers
-
We take the semileptonic $B→π$ and $B→Kπ$ form factors from computations based on Light-Cone Sum Rules [ref] .
$B\to V\ell^+\ell^-$ in the Standard Model from Light-Cone Sum Rules · Two-body non leptonic amplitudes in QCD factorisation · 0.98
-
The direct $CP$ asymmetry $A_CP(B^0→K^⋆+π^-)$ has been measured by in both modes [ref] and by Belle in the $B^0→K^0_Sπ^+π^-$ mode [ref] .
Time-dependent Dalitz Plot Measurement of CP Parameters in B0 --> Ks Pi+ Pi- Decays · Direct $CP$ violation in $B^0→K^⋆+π^-$ · 0.93
-
The direct $CP$ asymmetry $A_CP(B^0→K^⋆+π^-)$ has been measured by in both modes [ref] and by Belle in the $B^0→K^0_Sπ^+π^-$ mode [ref] .
Time-dependent amplitude analysis of B0 --> K0S pi+ pi- · Direct $CP$ violation in $B^0→K^⋆+π^-$ · 0.93
Compares with 1 paper
-
This result is to be compared with the $0.23±0.06$ value provided by HFLAV [ref] .
Averages of $b$-hadron, $c$-hadron, and $\tau$-lepton properties as of summer 2016 · Direct $CP$ violation in $B^0→K^⋆+π^-$ · 0.96
Cites as background 12 papers
-
Several methods (QCD factorisation [ref] , perturbative QCD approach [ref] , Soft-Collinear Effective Theory [ref] ) were devised more than a decade ago to compute hadronic contributions for non-leptonic decays.
Introduction to Soft-Collinear Effective Theory · Introduction · 0.86
-
Several methods (QCD factorisation [ref] , perturbative QCD approach [ref] , Soft-Collinear Effective Theory [ref] ) were devised more than a decade ago to compute hadronic contributions for non-leptonic decays.
Quantum Chromodynamics (CERN-2014-001) · Introduction · 0.86
-
Several methods (QCD factorisation [ref] , perturbative QCD approach [ref] , Soft-Collinear Effective Theory [ref] ) were devised more than a decade ago to compute hadronic contributions for non-leptonic decays.
Quasi-two-body decays $B\to K\rho\to K\pi\pi$ in perturbative QCD approach · Introduction · 0.86
Discussion
Know something about this paper? Leave a comment, or highlight any passage above to comment on it.