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Strangeness Suppression of q(q)over-bar Creation Observed in Exclusive Reactions

El Alaoui, A.
; 
Moody, C. I.
; 
Wood, M. H.
; 
Griffioen, K. A.
Abstract
We measured the ratios of electroproduction cross sections from a proton target for three exclusive meson-baryon final states: AK(+), p pi(0), and n pi(+), with the CLAS detector at Jefferson Lab. Using a simplemodel of quark hadronization, we extract q (q) over bar creation probabilities for the first time in exclusive two-body production, in which only a single q (q) over bar pair is created. We observe a sizable suppression of strange quark-antiquark pairs compared to nonstrange pairs, similar to that seen in high-energy production.
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2014-01-01
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Physics
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Strangeness_Suppression.pdf
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Physics
DOI
https://doi.org/10.1103/PhysRevLett.113.152004
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https://scholarworks.wm.edu/handle/internal/1571
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