Acessibilidade / Reportar erro

A polarized target measurement of the electric form factor of the neutron at JLab

The experiment E93-026 at the Thomas Jefferson National Accelerator Facility (JLab) determined the electric form factor of the neutron <IMG SRC="/img/revistas/bjp/v34n3a/a02img03.gif">through quasielastic <IMG SRC="/img/revistas/bjp/v34n3a/a02img01.gif">(<IMG SRC="/img/revistas/bjp/v34n3a/a02img02.gif">; e'n)p scattering using a longitudinally polarized electron beam and a frozen polarized 15ND3 target. The knocked out neutrons were detected in a segmented plastic scintillator detector in coincidence with the scattered electrons. The <IMG SRC="/img/revistas/bjp/v34n3a/a02img03.gif">was extracted by comparing the experimental beam-target asymmetry with full theoretical calculations based on different values of <IMG SRC="/img/revistas/bjp/v34n3a/a02img03.gif">. Preliminary results of the Fall 2001 run are reported.


Sociedade Brasileira de Física Caixa Postal 66328, 05315-970 São Paulo SP - Brazil, Tel.: +55 11 3091-6922, Fax: (55 11) 3816-2063 - São Paulo - SP - Brazil
E-mail: sbfisica@sbfisica.org.br