We report the first, kinematically-complete measurement of the differential cross section of phi-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(+) and K(-) near the theoretical production threshold of 1.57 GeV. The extracted differential cross sections d sigma/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 phi-meson photoproduction from deuterium in a similar incident photon energy range, but in a different momentum transfer region.

Qian, X., Chen, W., Gao, H., Hicks, K., Kramer, K., Laget, J., et al. (2011). Near-threshold photoproduction of ϕ mesons from deuterium. PHYSICS LETTERS. SECTION B, 696(4), 338-342 [10.1016/j.physletb.2010.12.065].

Near-threshold photoproduction of ϕ mesons from deuterium

D'ANGELO, ANNALISA;PISANO, SILVIA;
2011-02-07

Abstract

We report the first, kinematically-complete measurement of the differential cross section of phi-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(+) and K(-) near the theoretical production threshold of 1.57 GeV. The extracted differential cross sections d sigma/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 phi-meson photoproduction from deuterium in a similar incident photon energy range, but in a different momentum transfer region.
7-feb-2011
Pubblicato
Rilevanza internazionale
Articolo
Esperti anonimi
Settore FIS/04 - FISICA NUCLEARE E SUBNUCLEARE
English
Con Impact Factor ISI
Near threshold; Deuteron; phi meson photoproduction; Quasi free;NUCLEAR-BOUND QUARKONIUM
Clas Collaboration
http://www.sciencedirect.com/science/article/pii/S0370269311000037
Qian, X., Chen, W., Gao, H., Hicks, K., Kramer, K., Laget, J., et al. (2011). Near-threshold photoproduction of ϕ mesons from deuterium. PHYSICS LETTERS. SECTION B, 696(4), 338-342 [10.1016/j.physletb.2010.12.065].
Qian, X; Chen, W; Gao, H; Hicks, K; Kramer, K; Laget, J; Mibe, T; Qiang, Y; Stepanyan, S; Tedeschi, D; Xu, W; Adhikari, K; Amaryan, M; Anghinolfi, M; ...espandi
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Utilizza questo identificativo per citare o creare un link a questo documento: https://hdl.handle.net/2108/37919
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