We report on the first measurement of the F2 structure function of the neutron from the semi-inclusive scattering of electrons from deuterium, with low-momentum protons detected in the backward hemisphere. Restricting the momentum of the spectator protons to ≲100  MeV/c and their angles to ≳100° relative to the momentum transfer allows an interpretation of the process in terms of scattering from nearly on-shell neutrons. The F2n data collected cover the nucleon-resonance and deep-inelastic regions over a wide range of Bjorken x for 0.65<Q2<4.52  GeV2, with uncertainties from nuclear corrections estimated to be less than a few percent. These measurements provide the first determination of the neutron to proton structure function ratio F2n/F2p at 0.2≲x≲0.8 with little uncertainty due to nuclear effects.

Baillie, N., Tkachenko, S., Zhang, J., Bosted, P., Bultmann, S., Christy, M., et al. (2012). Measurement of the Neutron F-2 Structure Function via Spectator Tagging with CLAS. PHYSICAL REVIEW LETTERS, 108(14), 142001-1-142001-6 [10.1103/PhysRevLett.108.142001].

Measurement of the Neutron F-2 Structure Function via Spectator Tagging with CLAS

D'ANGELO, ANNALISA;PISANO, SILVIA;
2012-04-06

Abstract

We report on the first measurement of the F2 structure function of the neutron from the semi-inclusive scattering of electrons from deuterium, with low-momentum protons detected in the backward hemisphere. Restricting the momentum of the spectator protons to ≲100  MeV/c and their angles to ≳100° relative to the momentum transfer allows an interpretation of the process in terms of scattering from nearly on-shell neutrons. The F2n data collected cover the nucleon-resonance and deep-inelastic regions over a wide range of Bjorken x for 0.65
6-apr-2012
Pubblicato
Rilevanza internazionale
Articolo
Esperti anonimi
Settore FIS/04 - FISICA NUCLEARE E SUBNUCLEARE
English
Con Impact Factor ISI
INELASTIC ELECTRON-SCATTERING; STRUCTURE-FUNCTION RATIO; NUCLEAR-STRUCTURE; DEUTERON; PROTON; DUALITY; MODEL; PION; FORM
CLAS collaboration
http://prl.aps.org/abstract/PRL/v108/i14/e142001
Baillie, N., Tkachenko, S., Zhang, J., Bosted, P., Bultmann, S., Christy, M., et al. (2012). Measurement of the Neutron F-2 Structure Function via Spectator Tagging with CLAS. PHYSICAL REVIEW LETTERS, 108(14), 142001-1-142001-6 [10.1103/PhysRevLett.108.142001].
Baillie, N; Tkachenko, S; Zhang, J; Bosted, P; Bultmann, S; Christy, M; Fenker, H; Griffioen, K; Keppel, C; Kuhn, S; Melnitchouk, W; Tvaskis, V; Adhik...espandi
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Utilizza questo identificativo per citare o creare un link a questo documento: https://hdl.handle.net/2108/69372
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