Measurement of the doubly Cabibbo suppressed decay $D^0 \to K^+\pi^-$ and a search for charm mixing

et al; FOCUS collaboration; J.M. Link

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Measurement of the doubly Cabibbo suppressed decay $D^0 \to K^+\pi^-$ and a search for charm mixing

FOCUS Collaboration, J.M. Link, et al

High Energy Physics - Experiment · Submitted 12 Dec 2004

abstract compiled · 2026-09-23 · no language-model review

The authors' main claim From a sample of 234 signal events, we find a branching ratio of $\frac{\Gamma(D^0 \to K^+\pi^-)}{\Gamma(D^0 \to K^-\pi^+)} = (0.429^{+0.063}_{-0.061}\pm 0.027)%$ under the assumptions of no mixing and no CP violation.

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arXiv IDhep-ex/0412034 (version 2)

Pith IDOMXBQ2A3, Pith's permanent record of this paper and its review

Citationet al, FOCUS collaboration, J.M. Link. "Measurement of the doubly Cabibbo suppressed decay $D^0 \to K^+\pi^-$ and a search for charm mixing." arXiv:hep-ex/0412034 (2004). https://pith.science/paper/OMXBQ2A3

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What the abstract itself states, as probabilities: claims first 0.02 · states limitation 0.56 · human participants 0.02 · controlled comparison 0.18 · randomized assignment 0.01 · states quantitative result 0.99 · compares with prior results 0.24 · mentions code or data availability 0.02.

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arXiv listing abstract v2. Results and the main claim are underlined; show every role.

We present an analysis of the decay $D^0 \to K^+\pi^-$ based on FOCUS data. From a sample of 234 signal events, we find a branching ratio of $\frac{\Gamma(D^0 \to K^+\pi^-)}{\Gamma(D^0 \to K^-\pi^+)} = (0.429^{+0.063}_{-0.061}\pm 0.027)%$ under the assumptions of no mixing and no CP violation. Allowing for CP violation, we find a branching ratio of $(0.429 \pm 0.063 \pm 0.028)%$ and a \textit{CP} asymmetry of $0.18 \pm 0.14 \pm 0.04$. The branching ratio for the case of mixing with no CP violation is $(0.381^{+0.167}_{-0.163} \pm 0.092)%$. We also present limits on charm mixing.

background contribution method result interpretation main claim

What the classifier reports for each sentence. The number is the probability it gave the label.
#	sentence	role	the authors' own work	states the main conclusion	strength
s0	We present an analysis of the decay $D^0 \to K^+\pi^-$ based on FOCUS data.	contribution 0.99	0.93	0.04	asserted 0.96
s1	From a sample of 234 signal events, we find a branching ratio of $\frac{\Gamma(D^0 \to K^+\pi^-)}{\Gamma(D^0 \to K^-\pi^+)} = (0.429^{+0.063}_{-0.061}\pm 0.027)%$ under the assumptions of no mixing and no CP violation.	result 1.00	0.97	0.42	asserted 1.00
s2	Allowing for CP violation, we find a branching ratio of $(0.429 \pm 0.063 \pm 0.028)%$ and a \textit{CP} asymmetry of $0.18 \pm 0.14 \pm 0.04$.	result 1.00	0.97	0.25	asserted 1.00
s3	The branching ratio for the case of mixing with no CP violation is $(0.381^{+0.167}_{-0.163} \pm 0.092)%$.	result 1.00	0.94	0.12	asserted 1.00
s4	We also present limits on charm mixing.	contribution 0.82	0.90	0.10	asserted 0.81

What kind of paper the classifier reports this is: empirical study 1.00 · evidence from analysis of existing data 0.89.

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arXiv listing abstract v2

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full text
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P abstract

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T body sentences
C citations
R cross-paper relations

Every quoted sentence on this record is the authors'. Every label is from Pith's closed vocabulary, with the probability shown beside it. Every number in the measurements table is the authors', checked by code. Record as JSON

The paper

Original abstract

We present an analysis of the decay $D^0 \to K^+\pi^-$ based on FOCUS data. From a sample of 234 signal events, we find a branching ratio of $\frac{\Gamma(D^0 \to K^+\pi^-)}{\Gamma(D^0 \to K^-\pi^+)} = (0.429^{+0.063}_{-0.061}\pm 0.027)%$ under the assumptions of no mixing and no CP violation. Allowing for CP violation, we find a branching ratio of $(0.429 \pm 0.063 \pm 0.028)%$ and a \textit{CP} asymmetry of $0.18 \pm 0.14 \pm 0.04$. The branching ratio for the case of mixing with no CP violation is $(0.381^{+0.167}_{-0.163} \pm 0.092)%$. We also present limits on charm mixing.

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References

Forward citations

Cited by 2 Pith papers

Reviewed papers in the Pith corpus that reference this work. Sorted by Pith novelty score. Full citation record

PHOTOS Monte Carlo: a precision tool for QED corrections in Z and W decays
hep-ph 2005-06 conditional novelty 6.0 of 10

PHOTOS reproduces dedicated QED generators for Z and W decays to within roughly 0.1% across zero-, one-, and two-photon final states, as measured by automated histogram comparisons.
D0D0bar Quantum Correlations, Mixing, and Strong Phases
hep-ex 2006-03 conditional novelty 5.0 of 10

Quantum-correlated D0 D0bar decays at CLEO-c give a first, low-precision strong phase measurement cos(delta_Kpi) = 1.09 +/- 0.66 and a charm mixing limit y = -0.058 +/- 0.066.

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3 arXiv papers cite this in 3 sentences

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Papers whose main result relates to this one's

Found among the papers closest to this one by title and main claim. Pith's classifier compared each pair's main results and a second model family confirmed the relation; checked against two further families, shown conflicts agreed 118 times in 120 and shown same results 218 times in 239. The quoted sentence is the other paper's main claim.

States the same result 1 paper

From a sample of 234 events we find a branching ratio of $\frac{\Gamma(D^0 \to K^+\pi^-)}{\Gamma(D^0 \to K^-\pi^+)} = (0.430^{+0.062}_{-0.061}\pm 0.031)%$ under the assumption of no mixing and no CP violation.

$D^0$--$\bar{D}{}^0$ hadronic mixing and DCS decays from FOCUS · 0.98

Papers citing it · 2 sentences without a confident label

Uses its data or values 1 paper

Charm-mixing is by now experimentally well established and HFLAV [ref] finds as an average of [ref] : [equation] where $ΔM_D$ is the mass difference of the two mass eigenstates of the neutral $D^0$ mesons and $ΔΓ_D$ the corresponding decay rate difference.

Renormalisation scale setting for D-mixing · Introduction · 0.99

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