Exclusive electroproduction of K+ Lambda and K+ Sigma^0 final states at Q^2 = 0.030-0.055 (GeV/c)^2 (CROSBI ID 189775)
Prilog u časopisu | izvorni znanstveni rad | međunarodna recenzija
Podaci o odgovornosti
Achenbach, P. ; Ayerbe Gayoso, C. ; Bernauer, J.C. ; Bianchin, S. ; Bohm, R. ; Borodina, O. ; Bosnar, Damir ; Bosz, M. ; Bozkurt, V. ; Bydsovsky, P. ; Debenjak, L. ; Distler, M.O. ; Esser, A. ; Friščić, Ivica ; , Gomez Rodriguez, M. ; Gokuzum, B. ; Griessinger, K. ; Jennewein, P. ; Kim, E. ; Makek, Mihael ; Merkel, H. ; Minami, S. ; Muller, U. ; Nakajima, D. ; Nungesser, L. ; Ozel-Tashenov, B. ; Pochodzalla, J. ; Rappold, Ch. ; Saito, T.R. ; Sanchez Majos, S. ; Schlimme, B.S. ; Sirca, S. ; Weinriefer, M. ; Yoon, C.J. ;
engleski
Exclusive electroproduction of K+ Lambda and K+ Sigma^0 final states at Q^2 = 0.030-0.055 (GeV/c)^2
Cross section measurements of the exclusive p(e, e'K+)Lambda, Sigma^0 electroproduction reactions have been performed at the Mainz Microtron MAMI in the A1 spectrometer facility using for the first time the Kaos spectrometer for kaon detection. These processes were studied in a kinematical region not covered by any previous experiment. The nucleon was probed in its third resonance region with virtual photons of low four- momenta, Q^2= 0.030-0.055 (GeV/c)^2. The MAMI data indicate a smooth transition in Q^2 from photoproduction to electroproduction cross sections. Comparison with predictions of effective Lagrangian models based on the isobar approach reveal that strong longitudinal couplings of the virtual photon to the N* resonances can be excluded from these models
Electron scattering; electroproduction; Kaon; Lamdba; Sigma; Kaos spectrometer; MAMI
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Podaci o izdanju
14
2012.
14-28
objavljeno
1434-6001
10.1140/epja/i2012-12014-9
