Year: 2026
Type: preprint
Abstract: We reconstruct the continuum electron-recoil contribution to the LZ background expectation from the collaboration's released simulation configuration. The released model specifies a definite response tail, but the published calibration information supplies no bound on how far the physical tail may depart from it at the probabilities the expectation depends on. Distributions reproducing the executable model's mean, variance, and standardised skewness exactly, and its event-conditioned 10, 50, and 90\% \(N_e\) quantiles to about one per cent, differ in the relevant tail probability by more than five orders of magnitude. The ladder is short: a tail agreeing with that central characterisation to 0.14\% in the quantiles lifts the electron-recoil contribution out of the negligible range, and one agreeing to 0.47\% makes it comparable to the entire background quoted for the comparison region. We go on to identify the measurements that would settle it.
Source: arXiv (Cornell University)
Institution: SRM Institute of Science and Technology
Language: English
Topic: Neutrino Physics Research
Subfield: Nuclear and High Energy Physics
Field: Physics and Astronomy
Domain: Physical Sciences
Open Access status: green
OpenAlex ID: W7223153747