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 HAL : in2p3-00762344, version 1
 arXiv : 1212.1336
 Physical Review C 87 (2013) 025204
 Separated Structure Functions for Exclusive $K^+\Lambda$ and $K^+\Sigma^0$ Electroproduction at 5.5 GeV with CLAS
 CLAS Collaboration(s)
 (2013)
 We report measurements of the exclusive electroproduction of $K^+\Lambda$ and $K^+\Sigma^0$ final states from an unpolarized proton target using the CLAS detector at the Thomas Jefferson National Accelerator Facility. The separated structure functions $\sigma_U$, $\sigma_{LT}$, $\sigma_{TT}$, and $\sigma_{LT'}$ were extracted from the $\Phi$-dependent differential cross sections acquired with a longitudinally polarized 5.499 GeV electron beam. The data span a broad range of momentum transfers $Q^2$ from 1.4 to 3.9 GeV$^2$, invariant energy $W$ from threshold to 2.6 GeV, and nearly the full center-of-mass angular range of the kaon. The separated structure functions provide an unprecedented data sample, which in conjunction with other meson photo- and electroproduction data, will help to constrain the higher-level analyses being performed to search for missing baryon resonances.
 Thème(s) : Physique/Physique des Hautes Energies - ExpériencePhysique/Physique Nucléaire Expérimentale
 Lien vers le texte intégral : http://fr.arXiv.org/abs/1212.1336
 in2p3-00762344, version 1 http://hal.in2p3.fr/in2p3-00762344 oai:hal.in2p3.fr:in2p3-00762344 Contributeur : Emmanuelle Vernay <> Soumis le : Vendredi 7 Décembre 2012, 09:27:38 Dernière modification le : Jeudi 21 Février 2013, 08:35:20