Separation of the longitudinal and transverse cross sections in the 1H(e,e′ K+Λ and 1H(e,e′K+)∑0 reactions

R. M. Mohring, D. Abbott, A. Ahmidouch, Ts A. Amatuni, P. Ambrozewicz, T. Angelescu, C. S. Armstrong, J. Arrington, K. Assamagan, S. Avery, K. Bailey, K. Beard, S. Beedoe, E. J. Beise, H. Breuer, R. Carlini, J. Cha, C. C. Chang, N. Chant, E. CisbaniG. Collins, W. Cummings, S. Danagoulian, R. De Leo, F. Duncan, J. Dunne, D. Dutta, T. Eden, R. Ent, L. Eyraud, L. Ewell, M. Finn, T. Fortune, V. Frolov, S. Frullani, C. Furget, F. Garibaldi, D. Gaskell, D. F. Geesaman, P. Gueye, K. K. Gustafsson, J. O. Hansen, M. Harvey, W. Hinton, E. Hungerford, M. Iodice, C. Jackson, C. Keppel, W. Kim, K. Kino, D. Koltenuk, S. Kox, L. Kramer, T. Leone, A. Lung, D. Mack, R. Madey, M. Maeda, S. Majewski, P. Markowitz, T. Mart, C. J. Martoff, D. Meekins, A. Mihul, J. Mitchell, H. Mkrtchyan, S. Mtingwa, I. Niculescu, R. Perrino, D. Potterveld, J. W. Price, B. A. Raue, J. S. Real, J. Reinhold, P. Roos, T. Saito, G. Savage, R. Sawafta, R. Segel, S. Stepanyan, P. Stoler, V. Tadevosian, L. Tang, L. Teodorescu, T. Terasawa, H. Tsubota, G. M. Urciuoli, J. Volmer, W. Vulcan, T. P. Welch, R. Williams, S. Wood, C. Yan, B. Zeidman

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59 Citations (Scopus)


We report measurements of cross sections for the reaction 1H(e,e′ K+) Y, for both the Λ and ∑0 hyperon states, at an invariant mass of W= 1.84 GeV and four-momentum transfers 0.5<Q2<2 (GeV/c)2. Data were taken for three values of virtual photon polarization ε, allowing the decomposition of the cross sections into longitudinal and transverse components. The Λ data are a revised analysis of prior work, whereas the ∑0 results have not been previously reported.

Original languageEnglish
Article number055205
Pages (from-to)552051-5520516
Number of pages4968466
JournalPhysical Review C - Nuclear Physics
Issue number5
Publication statusPublished - 1 May 2003


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