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Near-threshold photoproduction of ϕ mesons from deuterium

Author(s)
Xu, W.
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Abstract
We report the first, kinematically-complete measurement of the differential cross section of ϕ-meson photoproduction from deuterium near the production threshold for a proton using the CLAS detector and a tagged-photon beam in Hall B at Jefferson Lab. The measurement was carried out by a triple coincidence detection of a proton, K[superscript +] and K[superscript −] near the theoretical production threshold of 1.57 GeV. The extracted differential cross sections dσ/dt for the initial photon energy range of 1.65–1.75 GeV are consistent with predictions based on a quasifree mechanism. Our finding is different from recent LEPS results on ϕ-meson photoproduction from deuterium in a similar incident photon energy range, but in a different momentum transfer region.
Date issued
2011-01
URI
http://hdl.handle.net/1721.1/101214
Department
Massachusetts Institute of Technology. Department of Physics
Journal
Physics Letters B
Publisher
Elsevier
Citation
Qian, X., W. Chen, H. Gao, K. Hicks, K. Kramer, J.M. Laget, T. Mibe, et al. “Near-Threshold Photoproduction of ϕ Mesons from Deuterium.” Physics Letters B 696, no. 4 (February 2011): 338–342.
Version: Author's final manuscript
ISSN
03702693

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