# Study on space-time structure of Higgs boson decay using HBT correlation Method in e$^+$e$^-$ collision at $\sqrt{s}$=250 GeV

## TL;DR

This study investigates the space-time structure of Higgs boson decay using HBT correlation in simulated e+e- collisions at 250 GeV, measuring its radius and lifetime with results aligning with CMS data.

## Contribution

It introduces a novel application of HBT correlation to determine Higgs decay properties in e+e- collisions at 250 GeV.

## Key findings

- Higgs boson radius upper bound: 1.03±0.05 fm
- Higgs decay lifetime upper bound: (1.29±0.15)×10^{-7} fs
- Results are consistent with CMS experimental data.

## Abstract

The space-time structure of the Higgs boson decay are carefully studied with the HBT correlation method using e$^+$e$^-$ collision events produced through Monte Carlo generator PYTHIA 8.2 at $\sqrt{s}$=250GeV. The Higgs boson jets (Higgs-jets) are identified by H-tag tracing. The measurement of the Higgs boson radius and decay lifetime are derived from HBT correlation of its decay final state pions inside Higgs-jets in the e$^+$e$^-$ collisions events with an upper bound of $R_H \le 1.03\pm 0.05$ fm and $\tau_H \le (1.29\pm0.15)\times 10^{-7}$ fs. This result is consistent with CMS data.