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Experimental search for the decay mode K_L -> pi^0 gamma e^+ e^-

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Paper breakdownThe authors' claims, conditions and measurements, as JSON Signed receiptProof this review has not been altered
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K. Murakami, Y. Hemmi, H. Kurashige, Y. Matono, T. Nomura, H. Sakamoto, N. Sasao, M. Suehiro
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Y. Takeuchi, Y. Fukushima, Y. Ikegami, T. T. Nakamura, T. Taniguchi, M. Asai

High Energy Physics - Experiment · Submitted 8 Jul 1999

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

The authors' main claim We observed no events and set a 90% confidence level upper limit of Br(K_L -> pi^0 gamma e^+ e^-)< 7.1x10^{-7} for its branching ratio.

how it is stated · asserted 1.00 read the record →

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arXiv IDhep-ex/9907007 (version 1)
Pith IDQNJOXTJA, Pith's permanent record of this paper and its review
CitationH. Kurashige, H. Sakamoto, K. Murakami, M. Asai, M. Suehiro, N. Sasao, T. Nomura, T. Taniguchi, T. T. Nakamura, Y. Fukushima, Y. Hemmi, Y. Ikegami, Y. Matono, Y. Takeuchi. "Experimental search for the decay mode K_L -> pi^0 gamma e^+ e^-." arXiv:hep-ex/9907007 (1999). https://pith.science/paper/QNJOXTJA
Claim paper

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

Compiled by classifier-1.13-20260917 via OpenRouter, question bank abstract-p1-20260923, 2026-09-23: 1 request, 2,940 input tokens, $0.0001 reported.

What the abstract itself states, as probabilities: claims first 0.97 · states limitation 0.48 · human participants 0.02 · controlled comparison 0.03 · randomized assignment 0.01 · states quantitative result 0.99 · compares with prior results 0.13 · mentions code or data availability 0.02.

The abstract, sentence by sentence

arXiv listing abstract v1. Results and the main claim are underlined; .

We report on results of a search for the decay mode K_L -> pi^0 gamma e^+ e^- conducted by the E162 experiment at KEK. We observed no events and set a 90% confidence level upper limit of Br(K_L -> pi^0 gamma e^+ e^-)< 7.1x10^{-7} for its branching ratio. This is the first published experimental result on this decay mode.

background contribution method result interpretation main claim

What the classifier reports for each sentence. The number is the probability it gave the label.
#sentencerolethe authors' own workstates the main conclusionstrength
s0 We report on results of a search for the decay mode K_L -> pi^0 gamma e^+ e^- conducted by the E162 experiment at KEK. contribution 0.98 0.95 0.05 asserted 0.95
s1 We observed no events and set a 90% confidence level upper limit of Br(K_L -> pi^0 gamma e^+ e^-)< 7.1x10^{-7} for its branching ratio. result 1.00 0.97 0.91 asserted 1.00
s2 This is the first published experimental result on this decay mode. gap 0.53 0.47 0.07 asserted 1.00

What kind of paper the classifier reports this is: empirical study 1.00 · evidence from observation or experiment 1.00.

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

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 report on results of a search for the decay mode K_L -> pi^0 gamma e^+ e^- conducted by the E162 experiment at KEK. We observed no events and set a 90% confidence level upper limit of Br(K_L -> pi^0 gamma e^+ e^-)< 7.1x10^{-7} for its branching ratio. This is the first published experimental result on this decay mode.

Human review

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How the literature uses it

2 arXiv papers cite this in 2 sentences

Each citing sentence is taken from the citing paper's LaTeX source and typed by Pith's classifier. A label appears at probability 0.8 or more (0.95 for support), a contest at 0.7 or more; the quoted words are the citing authors'. How each label was checked · JSON

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