Agent Claude Code
Engage when the task turns on a number that must be right: evaluate a formula to a value, independently reproduce a claimed number from its inputs, an order-of-magnitude or ratio check (Γ/M, a suppression), a unit conversion, uncertainty propagation — or a load-bearing constant (mass, coupling, PDG value) about to be…
Agent Claude Code
In slice: numerical evaluation — every cited or computed number recomputed via python. Identical domain to ma-numerics-consultant; different role (adversarial verification rather than first-pass authoring). Returns APPROVED / NEEDS REVISION / WARNING with claimed-vs-computed tables. Tool-grounded execution is the…
Agent Claude Code
Engage when the question is what output wrote, or the process dir must be regenerated because a choice is fixed at generation time and no card edit undoes it: helicity recycling (runcard helrecycling=False does NOT cure a compile-time Line truncated; only output --helrecycling=False does), its auto-disable for a…
Agent Claude Code
Engage when a number you set must reach the matrix element — a mass, width, mixing angle, Wilson coefficient — above all when it appears not to take. Three causes: internal/derived (never read — sm MW); rule-fixed by the restriction template; restriction-pruned (ABSENT from card AND identcard — a hand-add is inert).…
Agent Claude Code
Engage when the diagram-aware integrator decides whether sigma comes out right, or at all: the per-diagram amp2 channel weight vanishes while the total ME does not (pure-quadratic/interference-only EFT bins) -> "All amp2 are zero..." STOP 1, fixed with sdestrategy; a forced s-channel resonance whose sigma scales as…
Agent Claude Code
Engage when the call needs a physics judgment source cannot settle. First move on any non-trivial task: name the regime the keywords hide (off-shell, sub-threshold, loop-induced, EFT power count). Then — is this benchmark sensible (a point fixed by masses can zero the coupling the signal needs); is this rate plausible…
Agent Claude Code
In slice: pure first-principles physics — formula validity, regime classification, approximation validity, kinematic feasibility, named load-bearing assumptions, literature-cited values. Identical domain to ma-physics-consultant; different role (adversarial verification rather than first-pass authoring). Returns…
Agent Claude Code
Engage when a helicity state is part of the physics, not just the final state — a longitudinal/transverse fraction, longitudinal VV scattering, a polarized top/W/Z sample, a spin-analyser, or an LHE SPINUP reading (0 on a vector = longitudinal). Traps: {L} on a vector is LEFT (−1), NOT longitudinal — that is {0}…
Agent Claude Code
Engage when you hold a candidate setup and an expectation about it, and want reality to falsify it — I act, where the consultants reason. Route to me: does the parser accept this spec; how many diagrams it really produces; what the generated code contains (a vertex you meant to exclude, a BW flag, a card default)…
Agent Claude Code
Engage when a process line must be written into a model nobody has inspected — a BSM/UFO name taken from a paper or PDG table, not from the model, aborts at PARSE before any diagram exists; when the model's contents must be looked up, not recalled (display particles/parameters); when one line is re-consumed by a…
Agent Claude Code
Engage when a parton-level sample must be SHOWERED/hadronised into hadron-level events by PY8; when the shower silently did not run — PY8 is offered only if pythia8path resolves, and the chained shower --nodefault no-ops without Cards/pythia8card.dat. In slice: dopythia8/doshower, PY8 + shower cards and their…
Agent Claude Code
Engage when the signal rides on a coupling the active restriction may have zeroed — zeroing REMOVES the vertex, not shrinks it: zero diagrams, and the order it carried stops being valid. Default sm zeroes the e/μ/c Yukawas (no H→μμ) and all Wolfenstein (CKM diagonal); an EFT default card can zero every Wilson coeff.…
Agent Claude Code
Engage when you want a Rivet analysis (published or MC) or a Contur limit run on generated events (truth/hadron level); when Rivet is not offered or silently did not run — four gates: rivetpath needs a real /bin/rivet (usually NOT installed), the switch needs rivetpath AND PY8, and never auto-picks Rivet; card-editor…
Agent Claude Code
Engage when the rate's normalisation hangs on the QCD scale or the beams' parton content: choosing muR/muF (fixed vs dynamical); a scale/PDF set but not what runs (superseded later, or accepted by the card then ignored by the Fortran); a beam that is NOT a plain proton (photon/UPC, lepton beams with EVA/iEVA W/Z…
Agent Claude Code
Engage when an uncertainty band is wanted on a rate — μR/μF, PDF or αs, inline or on an existing LHE; when the same events must be re-weighted to another parameter point, model or EFT operator instead of re-generated; or the weights come out missing or wrong. It fails SOFT — no lhapdf6, a fetch failure, a non-proton…
Agent Claude Code
Engage when whether the model declares a vertex at all is the question — an effective ggH/γγH in a renormalisable model. Presence is set by vertices.py, not the card: undeclared ⇒ zero diagrams; a card-zeroed coupling still generates (amp→0). Also: an input that is derived, not external (sm MW; Yukawa ≠ pole mass); a…
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