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27 April 2024

» arxiv » nucl-ex/0201015

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Neutron polarizabilities investigated by quasi-free Compton scattering from the deuteron
K. Kossert ; M. Camen ; F. Wissmann ; J. Ahrens ; H.-J. Arends ; R. Beck ; G. Caselotti ; P. Grabmayr ; P.D. Harty ; O. Jahn ; P. Jennewein ; M.I. Levchuk ; A.I. L’vov ; J.C. McGeorge ; A. Natter ; V. Olmos de Leon ; V.A. Petrun’kin ; M. Schumacher ; B. Seitz ; F. Smend ; A. Thomas ; W. Weihofen ; F. Zapadtka ;
Date:	23 Dec 2001
Journal:	Phys.Rev.Lett. 88 (2002) 162301
Subject:	nucl-ex hep-ex hep-ph
Abstract:	Measuring Compton scattered photons and recoil neutrons in coincidence, quasi-free Compton scattering by the neutron has been investigated at MAMI (Mainz) at $theta^{lab}_gamma=136^o$ in an energy range from 200 to 400 MeV. From the data a polarizability difference of $alpha_n - eta_n = 9.8 pm 3.6(stat)^{+2.1}_{-1.1}(syst)pm 2.2(model)$ in units of $10^{-4}fm^3$ has been determined. In combination with the polarizability sum $alpha_n+eta_n= 15.2pm 0.5$ deduced from photo absorption data, the neutron electric and magnetic polarizabilities, $alpha_n=12.5pm 1.8(stat)^{+1.1}_{-0.6}(syst)pm 1.1(model)$ and $eta_n = 2.7mp 1.8(stat)^{+0.6}_{-1.1}(syst)mp 1.1(model)$, are obtained.
Source:	arXiv, nucl-ex/0201015
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