High Energy Physics - Phenomenology · arXiv:1704.04529 v1 · submitted 14 Apr 2017
Penguin pollution in β and βs
The paper says
“Although the "penguin pollution" is doubly Cabibbo-suppressed, it could compete in size with current experimental errors.”
from the abstract · picked out as the main claim by a classifier
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The paper
Abstract
The mixing-induced CP asymmetries in Bd → J/ψKS and Bs → J/ψφ are essential to detect or constrain new physics in the $B_d\! - \overline{\!B}{}_d$ and $B_s\! - \overline{\!B}{}_s$ mixing amplitudes, respectively. To this end one must control the penguin contributions to the decay amplitudes, which affect the extraction of fundamental CP phases from the measured CP asymmetries. Although the "penguin pollution" is doubly Cabibbo-suppressed, it could compete in size with current experimental errors. In this talk I present a calculation of the penguin contributions treating QCD effects with soft-collinear factorisation and compare method and results with the alternative approach employing flavour-SU(3) symmetry. As a novel feature, I present results for the penguin pollution in b → cc̄d modes.
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abstract compiled · 2026-09-23 · no language-model review
How the main claim is stated: hedged possibility 1.00
What the abstract itself states, as probabilities: claims first 0.25 · states limitation 0.26 · human participants 0.01 · controlled comparison 0.13 · randomized assignment 0.01 · states quantitative result 0.06 · compares with prior results 0.94 · mentions code or data availability 0.02
The abstract, sentence by sentence
This table labels the abstract only (arXiv listing abstract v1). The number is the probability the classifier gave the label.
| Sentence | Role | The authors' own work | States the main conclusion | Strength |
|---|---|---|---|---|
| The mixing-induced CP asymmetries in $B_d \to J/\psi K_S$ and $B_s \to J/\psi \phi$ are essential to detect or constrain new physics in the $B_d\! - \overline{\!B}{}_d$ and $B_s\! - \overline{\!B}{}_s$ mixing amplitudes, respectively. | background 1.00 | 0.05 | 0.05 | asserted 0.97 |
| To this end one must control the penguin contributions to the decay amplitudes, which affect the extraction of fundamental CP phases from the measured CP asymmetries. | background 0.99 | 0.06 | 0.05 | asserted 1.00 |
| Although the "penguin pollution" is doubly Cabibbo-suppressed, it could compete in size with current experimental errors. | background 0.83 | 0.12 | 0.09 | hedged possibility 1.00 |
| In this talk I present a calculation of the penguin contributions treating QCD effects with soft-collinear factorisation and compare method and results with the alternative approach employing flavour-SU(3) symmetry. | contribution 0.52 | 0.93 | 0.09 | asserted 0.98 |
| As a novel feature, I present results for the penguin pollution in $b\to c\overline c d$ modes. | contribution 0.89 | 0.93 | 0.15 | asserted 0.98 |
What kind of paper the classifier reports this is: theoretical result 0.98 · evidence from simulation or computation 0.61
What was examined, and what was not
Sources read
- arXiv listing abstract v1
Not examined
- full text
- figures and tables
- references and citing sentences
- relations to other papers
Levels run
- P abstract
Not run
- S sections
- T body sentences
- C citations
- R cross-paper relations
How the labels were made
Compiled by classifier-1.13.0 via TypeSafe API, question bank abstract-p1-20260923, 2026-09-23: 1 request, 4,437 input tokens.
Every quoted sentence on this record is the authors'. Every label is from Pith's closed vocabulary, with the probability shown beside it. This record as JSON
How the literature uses it
What this paper does with the arXiv papers it cites
What it cites · 10 sentences without a confident label
Uses data or values from 5 papers
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The situation is similar with the experimental value $2 β_s+Δϕ_s=1.7^∘±1.9^∘$ [ref] which dominantly stems from LHCb data on $B_s→J/ψK^+ K^-$ and $B_s→J/ψf_0[→π^+π^-]$, with an experimental error of $2.2^∘$ on $2 β_s+Δϕ_s$ [ref] .
Measurement of CP violation and the B_s^0 meson decay width difference with B_s^0\to J/\psi K^+ K^- and B_s^0\to J/\psi\pi^+\pi^- decays · Introduction · 0.99
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In this way one finds the values $-3.9^∘≤Δϕ_d ≤-0.8^∘$ [ref] , $|Δϕ_d| ≤1.6^∘$ [ref] , $|Δϕ_d| ≤0.8^∘$ [ref] , and $Δϕ_d= -1.1^∘0.85^∘0.7^∘$ [ref] for $f=J/ψK_S$.
A Roadmap to Control Penguin Effects in $B^0_d\to J/\psi K_{\rm S}^0$ and $B^0_s\to J/\psi \phi$ · Introduction · 0.96
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In this way one finds the values $-3.9^∘≤Δϕ_d ≤-0.8^∘$ [ref] , $|Δϕ_d| ≤1.6^∘$ [ref] , $|Δϕ_d| ≤0.8^∘$ [ref] , and $Δϕ_d= -1.1^∘0.85^∘0.7^∘$ [ref] for $f=J/ψK_S$.
The Golden Modes B^0 -> J/psi K_{S,L} in the Era of Precision Flavour Physics · Introduction · 0.96
Compares with 3 papers
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As a novel feature, the method of Ref. [ref] permits the prediction of the penguin contributions to $b →c c d$ decays, for example: [equation] The first result means $-0.86≤S_J/ψπ^0 ≤-0.50$. eq:pi0 favours the Belle result [ref] $S_J/ψπ^0=-0.67±0.22$, $C_J/ψπ^0=-0.08±0.17$ over the BaBar result [ref] $S_J/ψπ^0=-1.23±0.21$, $C_J/ψπ^0=-0.20±0.19$.
Penguin contributions to CP phases in $B_{d,s}$ decays to charmonium · Matrix elements and numerical results · 0.93
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As a novel feature, the method of Ref. [ref] permits the prediction of the penguin contributions to $b →c c d$ decays, for example: [equation] The first result means $-0.86≤S_J/ψπ^0 ≤-0.50$. eq:pi0 favours the Belle result [ref] $S_J/ψπ^0=-0.67±0.22$, $C_J/ψπ^0=-0.08±0.17$ over the BaBar result [ref] $S_J/ψπ^0=-1.23±0.21$, $C_J/ψπ^0=-0.20±0.19$.
Evidence for CP violation in B0->J/Psi pi0 decays · Matrix elements and numerical results · 0.93
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As a novel feature, the method of Ref. [ref] permits the prediction of the penguin contributions to $b →c c d$ decays, for example: [equation] The first result means $-0.86≤S_J/ψπ^0 ≤-0.50$. eq:pi0 favours the Belle result [ref] $S_J/ψπ^0=-0.67±0.22$, $C_J/ψπ^0=-0.08±0.17$ over the BaBar result [ref] $S_J/ψπ^0=-1.23±0.21$, $C_J/ψπ^0=-0.20±0.19$.
Improved measurement of time-dependent CP violation in B0 -> J/Psi pi0 decays · Matrix elements and numerical results · 0.93
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