{"id":"5c2e2c53-1fcd-4980-93f5-e68196ca4727","arxiv_id":"2508.03770","paper_version":2,"verdict":"ACCEPT","confidence":"MODERATE","novelty_score":3.0,"correctness_risk":"low","formal_verification":"none","parameter_count":0,"one_line_summary":"CRESST provides the lithium aluminate data and a simplified method that reproduces its official spin-dependent dark matter exclusion limits to within a few percent.","lead":"CRESST releases the lithium aluminate detector data used for its 2022 spin-dependent dark matter limits, and shows how to compute those limits from simplified files. The release and method let other groups reproduce or extend the strongest sub-GeV spin-dependent limits.","discovery_kind":"review","skeptic_critique":{"model":"deepseek-v4-flash","headline":"Simplified-method validation is a self-consistency check against the same collaboration's official limits, so the standalone reproducibility claim is not independently established and the low-mass residuals are not quantified.","rationale":"The reader's ACCEPT verdict is reasonable for a data-release note: the paper is clear, the files are released, the method is described, and the visible agreement in Fig. 2 supports the central claim. I partially agree with the reader's weakest_assumption, which correctly flags the self-consistency of the validation. However, I elevate this to a load-bearing concern because the central claim is quantitative ('almost identical', '%-level residuals') and the only evidence is a qualitative visual comparison with an admitted low-mass deviation, which is precisely the region of the paper's headline sensitivity. A conditional verdict is proportionate: the paper's purpose — enabling reproduction of the CRESST limits from the released files — is served well, but the evidence as presented does not yet let an independent reader verify the claim without re-running the full calculation. Adding a residual table and a binning-sensitivity test would close the gap without changing the paper's scope. I do not see grounds for rejection: the method is plausible, the comparison is explicit, and the self-consistency limitation is openly acknowledged in the text.","tokens_in":4099,"tokens_out":1621,"duration_ms":20422,"concrete_test":"Recompute the lightest-mass rows of Fig. 2 (DM masses 0.25–0.5 GeV/c^2) with a finer binning of the released cut efficiency and acceptance-region overlap files (e.g., 0.05 keV bins instead of the released bin width) and compare the resulting spin-dependent proton and neutron limits to the official limits. If the simplified limits shift by more than a few percent, the binned representation is the source of the low-mass deviation and the central claim should be qualified. Additionally, produce a numeric table of residuals (sigma_simplified / sigma_official − 1) for every mass point and both modules to make the '%-level' statement quantitative.","verdict_should_be":"CONDITIONAL","load_bearing_attack":"The central claim (Sec. III) is that the released simplified data files can be used to obtain 'almost identical results' to the official CRESST limits. The validation in Fig. 2 compares the simplified method against the collaboration's own published limits from Ref. [2]; both curves are derived from the same detector response, selection, and efficiency model, so the agreement is a self-consistency check rather than an independent test of the released files. Concretely, the paper states residuals are 'at the %-level over most of the region of interest' with deviations 'mainly for the lightest DM masses', but no numerical residual table, maximum deviation, or per-mass breakdown is provided, and no quantitative sensitivity to the binning of the cut efficiency and acceptance-region overlap is shown. For Li1, the acceptance-region overlap is a binned average over events in each energy bin; the official analysis treats events as integer accept/reject, whereas the simplified method assigns fractional weights to boundary events. If this binning effect is large near threshold, the good agreement at higher masses does not guarantee agreement at the lowest masses, where the paper admits deviations appear and where the experiment claims world-leading sensitivity (0.25–1.5 GeV/c^2). The concern is not that the method is wrong; it is that the evidence as presented does not quantitatively establish the claim in the regime where residuals concentrate. A quantitative residual analysis and a binning-sensitivity test would settle whether the simplified method is robust or whether the low-mass deviations reflect a real limitation of the released representation.","agreement_with_reader":"partial"},"referee_report":{"model":"deepseek-v4-flash","summary":"This paper describes the public release of data from two CRESST-III detector modules with lithium aluminate (LiAlO2) targets, which were used to set the currently strongest spin-dependent dark matter cross-section limits in the mass range 0.25–1.5 GeV/c^2. The released files contain event recoil energies, binned cut efficiencies, and acceptance-region overlaps. The paper introduces a simplified method to compute exclusion limits from these files by convolving the expected DM recoil spectrum with a Gaussian resolution model and multiplying by the binned efficiencies and acceptance overlaps. The limits obtained with this simplified method are compared with the official limits from Ref. [2] in Fig. 2, showing visual agreement over most of the mass range with deviations at the lowest DM masses. The central claim is that the released data can be used to reproduce the official results in a simplified way.","tokens_in":4359,"tokens_out":7118,"duration_ms":81356,"significance":"If the claim holds, this data release enables the community to reproduce and extend CRESST's world-leading spin-dependent limits without reimplementing the full analysis chain, which is a valuable contribution for dark matter phenomenology. The paper provides the data files and a concrete simplified method, and the comparison with the official limits is a useful validation. However, the validation is presented only visually, and the paper does not specify the statistical recipe for the limit calculation. These gaps currently limit the independent usability of the release and the quantitative support for the central claim.","major_comments":[{"comment":"The central claim that the simplified method reproduces the official limits 'almost identically' is supported only by visual inspection of Fig. 2. The text states that residuals are 'at the %-level over most of the region of interest' but gives no numerical residual values, and the deviations are admitted to concentrate at the lowest DM masses, which is precisely the region where the result is claimed to be world-leading. Please provide a quantitative comparison, e.g., a table or figure of the relative difference between the simplified and official limits as a function of DM mass, and state the maximum deviation in the 0.25–1.5 GeV/c^2 range.","section":"Sec. III, Fig. 2"},{"comment":"The paper does not specify the statistical procedure used to compute the limits shown in Fig. 2 from the released data. It describes only the signal modeling (Gaussian convolution and multiplication by cut efficiency and acceptance-region overlap), not the construction of the likelihood or test statistic, the treatment of the observed events (e.g., how the events in C3_Li1_AR.txt are used), the background model, or the method for setting the 90% CL upper limit. Without this information, a reader cannot independently reproduce the reported limits from the released files, and the central claim is not fully substantiated. Please provide the complete limit-setting recipe, or explicitly state that the identical statistical procedure of Ref. [2] is used with the simplified signal model, and make available any additional necessary inputs such as the background model.","section":"Sec. III (and Sec. II)"},{"comment":"The simplified method uses binned acceptance-region overlaps and binned cut efficiencies, whereas the official analysis treats events individually with an accept/reject criterion. The paper does not test the sensitivity of the results to the binning of these quantities. Since the residual deviations are concentrated at low energies/masses, where the binning may have the largest effect, a robustness check is needed to establish that the binned approximation is not the dominant source of the deviations. For example, varying the bin width or comparing with an event-by-event calculation for Li1 would demonstrate whether the released binned files are sufficient for the claimed accuracy.","section":"Sec. III / Sec. II, item 4"}],"minor_comments":[{"comment":"The right panel of Fig. 2(b) contains a typo in the axis label: 'Neuton' should be 'Neutron'.","section":"Fig. 2(b)"},{"comment":"The phrase 'residuals at the %-level' should be qualified as relative residuals (i.e., the ratio of the simplified limit to the official limit) to avoid ambiguity.","section":"Sec. III"},{"comment":"The phrase 'The ground truth spectrum expected from DM scattering' is imprecise; suggest rephrasing as 'The predicted DM recoil spectrum'.","section":"Sec. III"},{"comment":"The phrase 'no operating light channel for Li2' should read 'no operating light channel in Li2' for grammatical correctness.","section":"Sec. II, item 2"},{"comment":"The file descriptions do not state the units for the recoil energies; specifying that the energies are in keV would improve clarity.","section":"Sec. II"},{"comment":"The term 'weight' for the target mass is colloquial; 'mass' is the standard physics term.","section":"Sec. I"}],"recommendation":"major_revision","confidential_remarks":"This is a data-release note rather than a new physics result. The core idea—releasing simplified data files that reproduce official limits—is sound and useful, but the validation is not yet quantitative enough for the central claim to be fully supported. The authors should provide a residual analysis and a complete recipe for the limit calculation. I see no reason to doubt the correctness of the method, but the manuscript's current form leaves the reproducibility claim under-specified."},"author_rebuttal":null,"desk_editor":{"model":"deepseek-v4-flash","letter":"Dear colleague,\n\nThis is a data-release note, and the authors are upfront about that. The new content is the public dataset plus a simplified binned-efficiency method that reproduces the official CRESST spin-dependent limits at the percent level. There is no new physics claim, and the paper says so.\n\nWhat the paper does well: the released files are clearly described — event lists, cut efficiencies, acceptance-region overlaps, and the official limit curves. The simplified method (analytic Gaussian convolution times cut efficiency times acceptance overlap) is a real convenience; it lets outsiders recompute the limits without the full simulation chain. The comparison in Fig. 2 shows the two curves overlapping over most of the mass range, which supports the central claim.\n\nThe soft spot is the validation. The agreement with the official limits is a self-consistency check: both curves come from the same collaboration, same data, same detector response. That is not a fatal problem for a data note, since the goal is reproduction, not independent confirmation. But the paper says residuals are “at the %-level” and deviations occur “mainly for the lightest DM masses” without giving any numbers. There is no residual table, no maximum deviation, and no test of how the choice of binning for cut efficiency and acceptance-region overlap affects the result. Since the lowest masses are exactly where the experiment claims world-leading sensitivity, a quantitative residual plot would have been cheap to include. This is a minor omission, not a load-bearing flaw.\n\nOne more limitation worth noting: the light-yield information is not released explicitly, so users cannot redo the acceptance-region definition themselves; they must use the binned overlap files provided. The paper is transparent about that, so it’s a design choice rather than hidden weakness.\n\nBottom line: this is a useful data release for anyone working on spin-dependent dark matter limits in the 0.25–1.5 GeV range. The central claim holds up, and the missing residual quantification is a fixable presentation issue. A serious referee should take it; it deserves peer review, not desk rejection. I’d ask the authors to add a residual table and a brief binning-sensitivity test before publication.","headline":"Honest, useful data-release note; self-consistency validation is fine but needs quantitative residuals.","tokens_in":5233,"tokens_out":3178,"would_cite":false,"duration_ms":33389,"reading_group":"maybe","serious_thinker":"yes","would_accept_peer_review":true},"rs_alignment":null,"lean_confirmation":null,"pith_extraction":{"msc":[],"pacs":[],"model":"deepseek-v4-flash","headline":"The paper claims that CRESST-III's public lithium aluminate data files can be combined with a Gaussian convolution and binned efficiencies to reproduce the official spin-dependent dark-matter exclusion limits with only percent-level…","keywords":["dark matter","spin-dependent scattering","CRESST-III","lithium aluminate","cryogenic detectors","data release","exclusion limits","low-mass dark matter"],"falsifier":"Run the released files through an independent implementation of the simplified method for a dark-matter mass near 1 GeV/$c^{2}$ and compare the resulting spin-dependent cross-section upper limit with the official curve in Fig. 2; a discrepancy of more than a few percent, or a systematic offset across the mass range, would show that the simplified files do not capture the full analysis.","tokens_in":3935,"feed_emoji":"🌌","tokens_out":4245,"duration_ms":48658,"temperature":0.7,"pith_summary":"This paper's purpose is to make the CRESST-III lithium aluminate dark-matter data set usable by the community by describing the released files and the exact recipe for turning them into exclusion limits. The central claim is that the simplified recipe—convolving the expected dark-matter recoil spectrum with a Gaussian baseline energy resolution, then multiplying by binned cut efficiencies and acceptance-region overlaps—reproduces the collaboration's official spin-dependent proton and neutron limits almost exactly. The comparison shows agreement at the few-percent level over most of the relevant mass range, with the largest deviations confined to the lightest dark-matter masses. A careful reader would care because the release reduces a demanding cryogenic-detector analysis to a small set of public files and elementary operations, making the strongest existing spin-dependent limits for this mass range independently checkable.","feed_headline":"CRESST data release reproduces dark-matter limits to percent level","feed_subtitle":"Open event files and binned efficiencies match the official spin-dependent exclusion curves within a few percent.","key_machinery":"The central object is the simplified method, which replaces the full simulation-based analysis chain with elementary operations on the released histograms. The expected dark-matter spectrum is convolved with an analytical Gaussian function for the baseline energy resolution, and then multiplied pointwise by the binned cut efficiency and, for the Li1 module, by the binned acceptance-region overlap for each contributing nucleus: aluminium, lithium, and oxygen. For Li2, which has no light channel, only the cut efficiency enters. This reduces the full simulation to a small number of arithmetic steps while preserving the detector response needed for limit setting.","core_discovery":"The paper's claim is that the simplified released data files are faithful to the full analysis: using them yields almost identical results to the official limits from Ref. [2]. Concretely, the recoil-energy event lists after data selection cuts, the binned cut efficiency, and the energy-dependent fraction of nuclear recoil bands inside the acceptance region together contain enough information to reproduce the spin-dependent proton and neutron exclusion curves without releasing the raw light-yield information or per-event simulated spectra. The comparison in Fig. 2 shows agreement at the few-percent level over most of the mass range; the residual differences are attributed to details of implementation and to events near the acceptance-region edge, not to missing physics.","pith_inferences":["The simplification's success at higher masses but visible deviations at lowest masses suggests the Gaussian resolution assumption is adequate when the energy resolution is small relative to spectral features; an independent test with a non-Gaussian resolution model could quantify whether the residual comes from resolution or from binning of the efficiency curves.","Because the only validation is against the collaboration's own official analysis, an independent third-party reproduction using the released files would be a stronger test of whether the simplified dataset truly captures all detector effects.","The release format itself is a useful template: it shows how an experiment can publish reproducible dark-matter limits without exposing computationally heavy simulations, a pattern other cryogenic detector experiments might follow."],"forward_implications":["Anyone can download the released files and recompute the spin-dependent exclusion limits without access to the full simulation, enabling independent cross-checks of the published results.","The simplified pipeline accepts any predicted recoil spectrum, so the same data can be reused to test alternative dark-matter halo models, form factors, or interaction operators.","The percent-level agreement indicates that binned efficiencies and a Gaussian resolution convolution capture the detector response well enough for limit setting, suggesting similar simplified releases could be adopted for future CRESST runs.","The residual deviations at the lowest masses mark the regime where these approximations should be treated with caution when interpreting limits.","The data correspond to the runs that produced the strongest spin-dependent constraints in the 0.25–1.5 GeV/c^2 mass region, so the reproduction bears directly on a published headline result."],"supporting_citations":[{"why":"The online data repository that hosts the released event files, binned efficiencies, acceptance-region overlaps, and official limit curves used throughout the paper.","marker":"[1]"},{"why":"The 2022 paper whose official spin-dependent exclusion limits and full simulation-based analysis chain the simplified method is checked against.","marker":"[2]"},{"why":"The companion description of CRESST-III data that supplies the general cryogenic detector and analysis background assumed by this release.","marker":"[3]"}],"fun_headline_variants":["CRESST data release reproduces dark-matter limits to a few percent","Open CRESST data match spin-dependent DM limits closely","CRESST lithium aluminate data yield faithful DM exclusion curves","Reproduce CRESST dark-matter bounds with released data files","CRESST data release: dark-matter limits reproducible to percent"],"cache_read_input_tokens":3200,"weakest_assumption_plain":"The entire agreement rests on the assumption that a Gaussian energy resolution and binned efficiency and acceptance-region curves summarize everything in the full detector simulation that influences the limits, and the only evidence offered is consistency with the collaboration's own official limits.","fun_headline_variants_meta":{"raw":{"variants":["CRESST data release reproduces dark-matter limits to a few percent","Open CRESST data match spin-dependent DM limits closely","CRESST lithium aluminate data yield faithful DM exclusion curves","Reproduce CRESST dark-matter bounds with released data files","CRESST data release: dark-matter limits reproducible to percent"]},"model":"deepseek-v4-flash","effort":"low","cost_usd":0.000811,"raw_usage":{"total_tokens":3461,"prompt_tokens":753,"completion_tokens":2708,"prompt_tokens_details":{"cached_tokens":384},"prompt_cache_hit_tokens":384,"prompt_cache_miss_tokens":369,"completion_tokens_details":{"reasoning_tokens":2618}},"tokens_in":369,"tokens_out":2708,"duration_ms":23807,"temperature":1.0,"reasoning_tokens":2618,"cache_read_input_tokens":384,"cache_creation_input_tokens":0},"cache_creation_input_tokens":0},"created_at":"2026-08-06T04:40:03.331859+00:00","model_set":{"reader":"deepseek-v4-flash"},"falsifier":"Run the released files through an independent implementation of the simplified method for a dark-matter mass near 1 GeV/$c^{2}$ and compare the resulting spin-dependent cross-section upper limit with the official curve in Fig. 2; a discrepancy of more than a few percent, or a systematic offset across the mass range, would show that the simplified files do not capture the full analysis.","supporting_citations":[{"cited_title":"For Li1, these events correspond to the spectrum shown in Ref","cited_arxiv_id":null,"evidence_quote":"The online data repository that hosts the released event files, binned efficiencies, acceptance-region overlaps, and official limit curves used throughout the paper."},{"cited_title":"[2], Fig","cited_arxiv_id":null,"evidence_quote":"The companion description of CRESST-III data that supplies the general cryogenic detector and analysis background assumed by this release."}],"review_version":1}