MAV-MCC 4S+4T UGT — LHCb Request #84 G-perp P1 Frozen-Protocol Result

This record reports the execution of the publicly frozen protocol MAV-UGT-LHCb-GPERP-P1-v0.1-R0 on LHCb Request #84. The parent prediction freeze was published before the present G_perp execution at DOI 10.5281/zenodo.23083567. Request #84 corresponds to the 2015 BHADRON.MDST MagUp and MagDown samples for the decay Lambda_b0 -> p K- pi+ pi- and charge-conjugate mode. Request #84 had previously been analysed under a different MAV-MCC Step-3 protocol based on the N1/N2 observables. It is therefore not classified here as an unseen-data blind validation. The methodological status of the present execution is: EX-ANTE FOR THE NEW G_perp STATISTIC / PREVIOUSLY ANALYSED CORPUS / NOT UNSEEN-DATA BLIND VALIDATION. The present test was executed using the D1, D3, G_perp and Q_G observables frozen in DOI 10.5281/zenodo.23083567. The frozen signal selection was |M_parent - 5619.6 MeV| <= 25 MeV and the frozen LOW selector was m²(p_same pi_same) <= 2.011466 GeV². The primary statistic was Q_G = median(G_perp | LOW) / median(G_perp | REST), with the frozen requirement Q_G <= 0.60. The frozen directional requirements were: D1_LOW < D1_REST, D3_LOW > D3_REST, G_perp_LOW < G_perp_REST, with the same LOW-versus-REST G_perp direction required independently in MagUp and MagDown data. The complete Request #84 sample contained 76,309 candidates. The frozen ±25 MeV signal selection retained 7,260 candidates, of which 1,640 were classified as LOW and 5,620 as REST. The primary combined result was Q_G = 0.434849, which satisfies the frozen Q_G <= 0.60 requirement. The corresponding median values were: D1_LOW = 0.182691D1_REST = 0.281270 D3_LOW = 0.102920D3_REST = 0.075323 so both frozen directional conditions were satisfied. The polarity-separated primary results were: Q_G(MagUp) = 0.443624 Q_G(MagDown) = 0.432409 and both satisfy the frozen requirement Q_G < 1. The frozen bootstrap procedure used 10,000 resamples with RNG seed 670087, independently preserving the MagUp LOW, MagUp REST, MagDown LOW and MagDown REST stratum sizes. The resulting central 99% bootstrap interval was [0.402391, 0.471658]. The upper endpoint remains below Q_G = 1, satisfying the frozen statistical requirement. All six predeclared P1 conditions were therefore satisfied. PRIMARY CLASSIFICATION: PASS. The primary result was locked before inspection of the non-judging secondary diagnostics. As an implementation cross-check, the same execution code was reapplied to the historical LHCb Request #67 calibration data and reproduced the previously frozen G_perp calibration anchor: Q_G,67 = 0.440701. The Request #84 value Q_G,84 = 0.434849 is approximately 1.33% lower than the Request #67 calibration value. The LOW G_perp median was also highly stable between the two datasets: Request #67:median(G_perp | LOW) = 1.628420 Request #84:median(G_perp | LOW) = 1.627890. No observable definition, numerical threshold, signal window, LOW selector, polarity requirement, bootstrap configuration, RNG seed or PASS/FAIL rule was modified after P1-relevant unblinding. The PASS classification means that the predeclared LOW-selected G_perp four-body geometry transferred to LHCb Request #84 under the frozen P1 protocol. This result does not by itself constitute unique validation of MAV-MCC/UGT. Request #84 is a previously analysed corpus and the present prospective status applies only to the newly frozen D1, D3, G_perp and Q_G statistics. Hadronic resonance structure, strong-phase interference, four-body phase-space correlations, detector acceptance and reconstruction effects remain viable conventional competing explanations. The present result does not claim direct observation of an upstream native frequency, direct observation of coherence, direct observation of T1, T3 or T4, new CP violation, an antiuniverse or antimatter-escape effect, extra physical spacetime dimensions, or exclusion of standard hadronic resonance physics. Historical results for LHCb Requests #67, #80 and the previous Request #84 Step-3 N1/N2 analysis remain unchanged. Any subsequent resonance- or phase-space-preserving Standard-Model null test must be defined under a separately frozen protocol before its judging dataset is inspected.