1. Separation of the longitudinal and transverse cross sections in the1H(e,e′K+)Λand1H(e,e′K+)Σ0reactions
- Author
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A. Ahmidouch, M. Harvey, S. Beedoe, T. P. Welch, John C. Mitchell, T. Eden, M. Maeda, S. Frullani, F. Duncan, A. F. Lung, K. Gustafsson, K. Kino, S. A. Wood, Paul Gueye, D. F. Geesaman, M. Finn, W. F. Vulcan, Brian Raue, Ts A. Amatuni, Guido Urciuoli, S. Mtingwa, J. A. Dunne, Christophe Furget, D. J. Mack, P. Ambrozewicz, F. Garibaldi, P. Stoler, V. Tadevosian, Kevin Bailey, H. Breuer, Stephen Avery, V. Frolov, H. Mkrtchyan, Terry Mart, T. Saito, D. Abbott, C. Yan, D. Koltenuk, C. C. Chang, S. Stepanyan, P. G. Roos, C. E. Keppel, W. Hinton, S. Danagoulian, W. Kim, J. Cha, Dipangkar Dutta, D. H. Potterveld, Rolf Ent, A. Mihul, G. Collins, D. G. Meekins, J. Arrington, E. V. Hungerford, C. S. Armstrong, E. Cisbani, L. Eyraud, R. Perrino, W. J. Cummings, Laird Kramer, J. Volmer, Hiroaki Tsubota, L. A. Ewell, E. J. Beise, S. Majewski, T. Angelescu, S. Kox, R. E. Segel, C. J. Martoff, B. Zeidman, G. Savage, Mauro Iodice, T. Terasawa, K. Beard, D. Gaskell, R. Mohring, L. Teodorescu, C. Jackson, R. Williams, J.-O. Hansen, I. Niculescu, Pete Markowitz, J. S. Real, R. De Leo, R. Madey, R. D. Carlini, J. W. Price, L. G. Tang, R. Sawafta, N. S. Chant, Ketevi Assamagan, J. Reinhold, T. Leone, and T. Fortune
- Subjects
Physics ,Nuclear and High Energy Physics ,Meson production ,010308 nuclear & particles physics ,Hyperon ,Virtual particle ,Lambda ,01 natural sciences ,Transverse plane ,0103 physical sciences ,Invariant mass ,Atomic physics ,Nuclear Experiment ,010306 general physics - Abstract
We report measurements of cross sections for the reaction ${}^{1}\mathrm{H}{(e,e}^{\ensuremath{'}}{K}^{+})Y,$ for both the \ensuremath{\Lambda} and ${\ensuremath{\Sigma}}^{0}$ hyperon states, at an invariant mass of $W=1.84\mathrm{GeV}$ and four-momentum transfers $0.5l{Q}^{2}l2(\mathrm{GeV}{/c)}^{2}.$ Data were taken for three values of virtual photon polarization $\ensuremath{\epsilon},$ allowing the decomposition of the cross sections into longitudinal and transverse components. The \ensuremath{\Lambda} data are a revised analysis of prior work, whereas the ${\ensuremath{\Sigma}}^{0}$ results have not been previously reported.
- Published
- 2003
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