Oct 24 – 29, 2022
Hoam Faculty House at Seoul National University, Seoul, KOREA
Asia/Seoul timezone

A substandard candle: the low-nu method at few-GeV neutrino energies

Oct 25, 2022, 3:10 PM
20m
Convention Center (Hoam Faculty House at Seoul National University, Seoul, KOREA)

Convention Center

Hoam Faculty House at Seoul National University, Seoul, KOREA

Seoul National University Hoam Faculty House 1 Gwanak-ro, Gwanak-Gu, Seoul, Korea

Speaker

Callum David Wilkinson (Lawrence Berkeley National Lab. (US))

Description

The low-nu method has been discussed as a "standard candle" in the context of accelerator neutrino beam experiments which require a precise understanding of the neutrino flux. The method utilizes a sub-sample of events where there is low energy-transfer to the nucleus, and requires that the interaction cross section is approximately constant for this sub-sample as a function of neutrino energy. However, it is unclear how reliable that assumption is due to the presence of nuclear and form-factor effects inherent in the interaction models.

This talk describes the low-nu method in detail and examines its prospects as a way to improve constraints on accelerator (anti)neutrino fluxes in an experiment-independent way. Ultimately, we will show that at the few-GeV energies of interest to current and future accelerator neutrino oscillation experiments, low-nu flux constraints are severely model-dependent, and are unlikely to offer any improvement on typical neutrino flux uncertainties, even with a perfect detector.

Primary authors

Callum David Wilkinson (Lawrence Berkeley National Lab. (US)) Carl Wret (University of Rochester (US)) Dr Luke Pickering (Royal Holloway, University of London) Dr Stephen Dolan (CERN)

Presentation materials