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DOE OSTI · 2477431

A data-driven method to constrain the $\bar{p}$ background in Mu2e

Chithirasreemadam, N.·Donati, S.·Murat, P.
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Abstract

The Mu2e experiment will search for the charged lepton flavour violating process of neutrinoless coherent muon to electron conversion in the field of an Al nucleus. The expected signal is a 104.97 MeV/c electron. One of the expected backgrounds is due to ¯ps produced by the proton beam at the Production Target and annihilating in the Stopping Target (ST). The background from ¯p annihilation is not a dominant one, but it has a large uncertainty and it cannot be suppressed by the timing cuts used to reduce the prompt background. However at Mu2e energies, p¯p annihilation is the only source of events with multiple simultaneous tracks coming from the ST. We exploit this unique feature and reconstruct the multi-track events to estimate the ¯p background.

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Chithirasreemadam, N., Donati, S., Murat, P.. 2024-08-05. A data-driven method to constrain the $\bar{p}$ background in Mu2e. https://doi.org/10.1393/ncc%2Fi2024-24281-x

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