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Search for the Decay $K^+ \to \pi^+ \nu \overline{\nu}$

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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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S. Adler, M. S. Atiya, I-H. Chiang, J. S. Frank, J. S. Haggerty, T. F. Kycia, K. K. Li, L. S. Littenberg
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A. Sambamurti, A. Stevens, R. C. Strand, C. Witzig (Brookhaven National Laboratory), W. C. Louis (Medium Energy Physics Division, Los Alamos National Laboratory) D. S. Akerib, M. Ardebili, M. R. Convery, M. M. Ito, D. R. Marlow, R. A. McPherson, P. D. Meyers, M. A. Selen, F. C. Shoemaker, A. J. S. Smith (Princeton University) E. W. Blackmore, D. A. Bryman, L. Felawka, P. Kitching, A. Konaka, V. A. Kujala, Y. Kuno, J. A. Macdonald, T. Nakano, T. Numao, P. Padley, J-M. Poutissou, R. Poutissou, J. Roy, R. Soluk, A. S. Turcot (TRIUMF)

High Energy Physics - Experiment · Submitted 18 Oct 1995

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

The authors' main claim \pi^+ \nu \overline{\nu}$ is set at $2.4 \times 10^{-9}$ at the 90\% C.L. using pions in the kinematic region $214~{\rm MeV}/c < P_\pi < 231~{\rm MeV}/c$.

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arXiv IDhep-ex/9510006 (version 1)
Pith IDNCN3HIE3, Pith's permanent record of this paper and its review
CitationA. J. S. Smith (Princeton University) E. W. Blackmore, A. Konaka, A. Sambamurti, A. Stevens, A. S. Turcot (TRIUMF), C. Witzig (Brookhaven National Laboratory), D. A. Bryman, D. R. Marlow, F. C. Shoemaker, I-H. Chiang, J. A. Macdonald, J-M. Poutissou, J. Roy, J. S. Frank, J. S. Haggerty, K. K. Li, L. Felawka, Los Alamos National Laboratory) D. S. Akerib, L. S. Littenberg, M. Ardebili, M. A. Selen, M. M. Ito, M. R. Convery, M. S. Atiya, P. D. Meyers, P. Kitching, P. Padley, R. A. McPherson, R. C. Strand, R. Poutissou, R. Soluk, S. Adler, T. F. Kycia, T. Nakano, T. Numao, V. A. Kujala, W. C. Louis (Medium Energy Physics Division, Y. Kuno. "Search for the Decay $K^+ \to \pi^+ \nu \overline{\nu}$." arXiv:hep-ex/9510006 (1995). https://pith.science/paper/NCN3HIE3
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, 4,328 input tokens, $0.0002 reported.

What the abstract itself states, as probabilities: claims first 0.03 · states limitation 0.45 · human participants 0.02 · controlled comparison 0.03 · randomized assignment 0.01 · states quantitative result 0.99 · compares with prior results 0.07 · mentions code or data availability 0.02.

The abstract, sentence by sentence

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

An upper limit on the branching ratio for the decay $K^+ \! \rightarrow \! \pi^+ \nu \overline{\nu}$ is set at $2.4 \times 10^{-9}$ at the 90\% C.L. using pions in the kinematic region $214~{\rm MeV}/c < P_\pi < 231~{\rm MeV}/c$. An upper limit of $5.2 \times 10^{-10}$ is found on the branching ratio for decays $K^+ \! \rightarrow \! \pi^+ X^0$, where $X^0$ is any massless, weakly interacting neutral particle. Limits are also set for cases where $M_{X^0}>0$.

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 An upper limit on the branching ratio for the decay $K^+ \! \rightarrow \! result 0.89 0.82 0.15 unclear 0.58
s1 \pi^+ \nu \overline{\nu}$ is set at $2.4 \times 10^{-9}$ at the 90\% C.L. using pions in the kinematic region $214~{\rm MeV}/c < P_\pi < 231~{\rm MeV}/c$. result 1.00 0.91 0.68 asserted 1.00
s2 An upper limit of $5.2 \times 10^{-10}$ is found on the branching ratio for decays $K^+ \! \rightarrow \! result 1.00 0.93 0.22 asserted 1.00
s3 \pi^+ X^0$, where $X^0$ is any massless, weakly interacting neutral particle. result 0.92 0.85 0.18 asserted 0.91
s4 Limits are also set for cases where $M_{X^0}>0$. result 0.96 0.89 0.05 asserted 0.99

What kind of paper the classifier reports this is: empirical study 1.00 · evidence from observation or experiment 0.97.

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

An upper limit on the branching ratio for the decay $K^+ \! \rightarrow \! \pi^+ \nu \overline{\nu}$ is set at $2.4 \times 10^{-9}$ at the 90\% C.L. using pions in the kinematic region $214~{\rm MeV}/c < P_\pi < 231~{\rm MeV}/c$. An upper limit of $5.2 \times 10^{-10}$ is found on the branching ratio for decays $K^+ \! \rightarrow \! \pi^+ X^0$, where $X^0$ is any massless, weakly interacting neutral particle. Limits are also set for cases where $M_{X^0}>0$.

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