Аннотация

A method for measuring the average longitudinal polarization of the electron beam at an electron-positron collider operating near the J/ψ resonance is proposed. The method utilizes the differential cross-section of J/ψ→[Λ→pπ−][Λ→p¯π+] decay. It can be used to measure the average longitudinal polarization of electrons with the statistical precision better than 10−3 at a Super Charm-Tau factory operating at the luminosity of 1035 cm−2s−1. The method is discussed in the context of the weak mixing angle measurement in the same experiment.

Язык оригиналаанглийский
Номер статьи76
Число страниц30
ЖурналJournal of High Energy Physics
Том2020
Номер выпуска3
DOI
СостояниеОпубликовано - 1 мар 2020

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