High Energy Physics - Phenomenology · arXiv:1207.4483 v3 · submitted 18 Jul 2012
On the origin of the D0 like-sign dimuon charge asymmetry
The paper says
“The D0, measurement could be reconciled with the Standard Model expectations for neutral-meson mixings, provided that the CP asymmetry in semileptonic b (c) decays reaches 0.3 % (1%).”
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The paper
Abstract
We reconsider the recent observation by the D0 experiment of a sizable like-sign dimuon charge asymmetry, highlighting that it could be affected by CP-violating New Physics contributions not only in Bd- and Bs-meson mixings, but also in semileptonic decays of b and c quarks producing muons. The D0, measurement could be reconciled with the Standard Model expectations for neutral-meson mixings, provided that the CP asymmetry in semileptonic b (c) decays reaches 0.3 % (1%). Such effects, which lie within the available (rather loose) experimental bounds, would be clear indications of New Physics and should be investigated experimentally.
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abstract compiled · 2026-09-23 · no language-model review
How the main claim is stated: hedged possibility 0.96
What the abstract itself states, as probabilities: claims first 0.03 · states limitation 0.31 · human participants 0.02 · controlled comparison 0.14 · randomized assignment 0.01 · states quantitative result 0.92 · compares with prior results 0.70 · mentions code or data availability 0.02
The abstract, sentence by sentence
This table labels the abstract only (arXiv listing abstract v3). The number is the probability the classifier gave the label.
| Sentence | Role | The authors' own work | States the main conclusion | Strength |
|---|---|---|---|---|
| We reconsider the recent observation by the D0 experiment of a sizable like-sign dimuon charge asymmetry, highlighting that it could be affected by CP-violating New Physics contributions not only in Bd- and Bs-meson mixings, but also in semileptonic decays of b and c quarks producing muons. | contribution 0.60 | 0.28 | 0.27 | hedged possibility 1.00 |
| The D0, measurement could be reconciled with the Standard Model expectations for neutral-meson mixings, provided that the CP asymmetry in semileptonic b (c) decays reaches 0.3 % (1%). | result 0.69 | 0.39 | 0.49 | hedged possibility 0.96 |
| Such effects, which lie within the available (rather loose) experimental bounds, would be clear indications of New Physics and should be investigated experimentally. | interpretation 0.58 | 0.10 | 0.39 | hedged possibility 0.68 |
What kind of paper the classifier reports this is: position or commentary 0.82 · evidence from argument 0.60
What was examined, and what was not
Sources read
- arXiv listing abstract v3
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- full text
- figures and tables
- references and citing sentences
- relations to other papers
Levels run
- P abstract
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- S sections
- T body sentences
- C citations
- R cross-paper relations
How the labels were made
Compiled by classifier-1.13-20260917 via OpenRouter, question bank abstract-p1-20260923, 2026-09-23: 1 request, 3,106 input tokens, $0.0001 reported.
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
Cited by 5 Pith papers
Reviewed papers on Pith that cite this one. The full citation record
- Measurement of the semileptonic $CP$ asymmetry in $B^0-\overline{B}{}^0$ mixing hep-ex · Sep 2014
- Averages of $b$-hadron, $c$-hadron, and $\tau$-lepton properties as of 2021 hep-ex · Jun 2022
- Averages of $b$-hadron, $c$-hadron, and $\tau$-lepton properties as of 2018 hep-ex · Sep 2019
- Averages of $b$-hadron, $c$-hadron, and $\tau$-lepton properties as of summer 2016 hep-ex · Dec 2016
- Averages of $b$-hadron, $c$-hadron, and $\tau$-lepton properties as of 2023 hep-ex · Nov 2024
How the literature uses it
7 arXiv papers cite this in 12 sentences
Papers citing it · 8 sentences without a confident label
Uses its data or values 1 paper
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Within the SM, the latter two are $A^bℓ_dir( SM )∼10^-7$ and $A^cℓ_dir( SM )∼10^-11$ [ref] .
Top B Physics at the LHC · Introduction · 0.81
Compares with it 1 paper
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The first two bounds above are stronger than existing bounds of 1.2% and 6%, respectively [ref] .
Top B Physics at the LHC · Introduction · 0.92
Cites it as background 2 papers
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The possibility to explain the D0 anomaly by allowing not only CPV in $$ mixing but also direct CPV in $b$ and $c$ semi-leptonic decays was discussed in [ref] .
Top B Physics at the LHC · Introduction · 0.86
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New Physics in $$ has also been explored through model independent analyses [ref] or through NP modifying highly suppressed (within the SM) additional contributions [ref] .
Mixing asymmetries in B meson systems, the D0 like-sign dimuon asymmetry and generic New Physics · Introduction · 0.96
What it cites · 22 sentences without a confident label
Builds on 1 paper
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[ref] must be adapted to take into account that the intermediate state consists of massless quarks, whereas the integration over phase space is unchanged: [equation] where the absorptive part of the $𝒜_L$ amplitude reads $G(z,m_q=0)=2z$ and the expression of the phase space $F(z,r_c)$ can be found in eq.
Second order direct CP asymmetry in B_(s) -> X l nu · SM Expectations for $$ and $$ · 0.98
Uses data or values from 7 papers
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We have reconsidered the recent measurement made by the DØ collaboration of a like-sign dimuon asymmetry [ref] .
Measurement of the anomalous like-sign dimuon charge asymmetry with 9 fb^-1 of p pbar collisions · Conclusions · 0.80
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We have reconsidered the recent measurement made by the DØ collaboration of a like-sign dimuon asymmetry [ref] .
Evidence for an anomalous like-sign dimuon charge asymmetry · Conclusions · 0.80
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We have reconsidered the recent measurement made by the DØ collaboration of a like-sign dimuon asymmetry [ref] .
Evidence for an anomalous like-sign dimuon charge asymmetry · Conclusions · 0.80
Compares with 1 paper
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In the limiting case where $==0$ and $w_4b=w_4c=0$, the resulting expressions coincide with the corresponding expressions in Ref. [ref] .
Measurement of the anomalous like-sign dimuon charge asymmetry with 9 fb^-1 of p pbar collisions · The role of the semileptonic CP asymmetries · 0.92
Cites as background 1 paper
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[ref] for recent work along these lines).
FCNC portals to the dark sector · SM Expectations for $$ and $$ · 0.83
Challenges and discussion
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