pith. machine review for the scientific record. sign in

arxiv: 2605.03908 · v1 · submitted 2026-05-05 · ✦ hep-ex

Recognition: unknown

Searching for long-lived particles with the ILD experiment

Jan Klamka , Aleksander Filip \.Zarnecki
Authors on Pith no claims yet

Pith reviewed 2026-05-07 04:41 UTC · model grok-4.3

classification ✦ hep-ex
keywords searchestracksdisplacedlong-livedanalysesbackgroundsbeam-inducedboosted
0
0 comments X

The pith

A simulation study shows the ILD detector can search for long-lived particles via displaced signatures and provides expected exclusion limits across a range of lifetimes for model-independent and Higgs-decay scenarios.

A machine-rendered reading of the paper's core claim, the machinery that carries it, and where it could break.

Long-lived particles are new particles that travel a measurable distance inside the detector before decaying, creating tracks or vertices that start away from the main collision point. The ILD's gaseous time projection chamber is particularly good at tracking these displaced or kinked tracks, even when they are very soft or nearly collinear. The study simulates realistic backgrounds from the collider beam and known Standard Model processes, then calculates what upper limits could be placed on the production of such particles if none are observed. Separate limits are given for particles coming from Higgs boson decays and for a more general search.

Core claim

We present expected exclusion limits for a model-independent analyses, as well as for Higgs boson decays to LLPs, for a range of LLP lifetimes.

Load-bearing premise

The full detector simulation accurately reproduces tracking performance for soft displaced tracks and boosted collinear tracks, and that background rates from beam-induced interactions and Standard Model processes are correctly modeled without significant unaccounted systematics.

read the original abstract

Future e$^+$e$^-$ colliders provide a unique opportunity for long-lived particle (LLP) searches. We present a full simulation study of LLP searches using the International Large Detector (ILD), where a gaseous time projection chamber as the main tracking device provides excellent prospects for LLP searches. Signatures of displaced vertices and kinked tracks are explored. We study challenging final states involving both very soft displaced tracks and boosted, nearly collinear tracks. Backgrounds from beam-induced interactions and other Standard Model processes are considered. We present expected exclusion limits for a model-independent analyses, as well as for Higgs boson decays to LLPs, for a range of LLP lifetimes.

Editorial analysis

A structured set of objections, weighed in public.

Desk editor's note, referee report, simulated authors' rebuttal, and a circularity audit. Tearing a paper down is the easy half of reading it; the pith above is the substance, this is the friction.

Axiom & Free-Parameter Ledger

0 free parameters · 2 axioms · 0 invented entities

The central claims rest on standard assumptions about detector performance and background modeling that are typical for collider simulation studies but are not independently verified here.

axioms (2)
  • domain assumption The ILD detector response, including tracking efficiency for displaced and kinked tracks, is accurately modeled in the simulation.
    This assumption directly determines the projected sensitivity and exclusion limits.
  • domain assumption Background contributions from beam-induced interactions and Standard Model processes are correctly estimated and do not contain unmodeled components that would degrade the search.
    Background modeling is critical for setting reliable exclusion limits in the absence of signal.

pith-pipeline@v0.9.0 · 5402 in / 1446 out tokens · 80239 ms · 2026-05-07T04:41:12.607250+00:00 · methodology

discussion (0)

Sign in with ORCID, Apple, or X to comment. Anyone can read and Pith papers without signing in.