Strangeness Suppression of q q¯ Creation Observed in Exclusive Reactions
Document Type
Article
Publication Date
2014
Abstract
We measured the ratios of electroproduction cross sections from a proton target for three exclusive meson-baryon final states: ΛK+, pπ0, and nπ+, with the CLAS detector at Jefferson Lab. Using a simple model of quark hadronization, we extract q¯q creation probabilities for the first time in exclusive two-body production, in which only a single q¯q 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.
Publication Title
Physical Review Letters
Repository Citation
Mestayer, M. D.; Biselli, Angela; and CLAS Collaboration, "Strangeness Suppression of q q¯ Creation Observed in Exclusive Reactions" (2014). Physics Faculty Publications. 170.
https://digitalcommons.fairfield.edu/physics-facultypubs/170
Published Citation
Mestayer, M. D., K. Park, K. P. Adhikari, M. Aghasyan, S. Anefalos Pereira, J. Ball, M. Battaglieri, Biselli A. et al [CLAS Collaboration]. "Strangeness Suppression of q q¯ Creation Observed in Exclusive Reactions." Physical review letters 113, no. 15 (2014). https://doi.org/10.1103/PhysRevLett.113.152004
DOI
10.1103/PhysRevLett.113.152004
Comments
© 2014 American Physical Society
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