Identification of the e+e−→ nn̅ events in CMD-3 detector

A.N. Amirkhanov; G.V. Fedotovich; S.S. Gribanov; I.B. Logashenko; A.S. Popov; N.M. Ryskulov; A.E. Ryzhenenkov

doi:10.1051/epjconf/201921207006

EPJ

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Proceedings

Open Access

EPJ Web of Conferences 212, 07006 (2019)
https://doi.org/10.1051/epjconf/201921207006

Identification of the e⁺e⁻→ nn̅ events in CMD-3 detector

A.N. Amirkhanov¹^,2^*, G.V. Fedotovich¹^,2, S.S. Gribanov¹^,2, I.B. Logashenko¹^,2, A.S. Popov¹^,2, N.M. Ryskulov¹ and A.E. Ryzhenenkov¹^,2

¹ Budker Institute of Nuclear Physics SB RAS, Novosibirsk 630090
² Novosibirsk State University, Novosibirsk 630090

^* email: amirkhanovartem@gmail.com

Published online: 17 June 2019

Abstract

A large amount of data collected with the CMD-3 detector above the threshold of the nn̅pair allows to measure the cross section of the process e⁺e⁻→ nn̅and the neutron form factor with good accuracy. This task is complicated by a large number of background events and necessity of finding ways to suppress them. A technique of identification for e⁺e⁻→ nn̅events is described.

© The Authors, published by EDP Sciences, 2019

This is an open access article distributed under the terms of the Creative Commons Attribution License 4.0 (http://creativecommons.org/licenses/by/4.0), which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.