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Nuclear transparency and effective kaon-nucleon cross section from the A(e, e'K+) reaction | | Nuruzzaman
; D. Dutta
; J. Arrington
; R. Asaturyan
; F. Benmokhtar
; W. Boeglin
; P. Bosted
; A. Bruell
; B. Clasie
; M. E. Christy
; E. Chudakov
; M. M. Dalton
; A. Daniel
; D. Day
; L. El Fassi
; R. Ent
; H. C. Fenker
; J. Ferrer
; N. Fomin
; H. Gao
; K. Garrow
; D. Gaskel
; C. Gray
; T. Horn
; G. M. Huber
; M. K. Jones
; N. Kalantarians
; C. E. Keppel
; K. Kramer
; Y. Li
; Y. Liang
; A. F. Lung
; S. Malace
; P. Markowitz
; A. Matsumura
; D. G. Meekins
; T. Mertens
; T. Miyoshi
; H. Mkrtchyan
; R. Monson
; T. Navasardyan
; G. Niculescu
; I. Niculescu
; Y. Okayasu
; A. K. Opper
; C. Perdrisat
; V. Punjabi
; X. Qian
; A. W. Rauf
; V. M. Rodriquez
; D. Rohe
; J. Seely
; E. Segbefia
; G. R. Smith
; M. Sumihama
; V. Tadevosyan
; L. Tang
; V. Tvaskis
; W. F. Vulcan
; F. R. Wesselmann
; S. A. Wood
; L. Yuan
; X. C. Zheng
; | | Date: |
21 Mar 2011 | | Abstract: | We have determined the transparency of the nuclear medium to kaons from
$A(e,e^{’} K^{+})$ measurements on $^{12}$C, $^{63}$Cu, and $^{197}$Au targets.
The measurements were performed at the Jefferson Laboratory and span a range in
four-momentum-transfer squared Q$^2$=1.1 -- 3.0 GeV$^2$. The nuclear
transparency was defined as the ratio of measured kaon electroproduction cross
sections with respect to deuterium, ($sigma^{A}/sigma^{D}$). We further
extracted the atomic number ($A$) dependence of the transparency as
parametrized by $T= (A/2)^{alpha-1}$ and, within a simple model assumption,
the in-medium effective kaon-nucleon cross sections. The effective cross
sections extracted from the electroproduction data are found to be smaller than
the free cross sections determined from kaon-nucleon scattering experiments,
and the parameter $alpha$ was found to be significantly larger than those
obtained from kaon-nucleus scattering. We have included similar comparisons
between pion- and proton-nucleon effective cross sections as determined from
electron scattering experiments, and pion-nucleus and proton-nucleus scattering
data. | | Source: | arXiv, 1103.4120 | | Services: | Forum | Review | PDF | Favorites | |
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