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arxiv: 1201.3517 · v1 · pith:TPSYBGQInew · submitted 2012-01-17 · ⚛️ nucl-ex

Momentum dependence of the phi-meson nuclear transparency

M. Hartmann , Yu. T. Kiselev , A. Polyanskiy , E. Ya. Paryev , M. Buescher , D. Chiladze , S. Dymov , A. Dzyuba
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R. Gebel V. Hejny B. Kaempfer I. Keshelashvili V. Koptev B. Lorentz Y. Maeda V. K. Magas S. Merzliakov S. Mikirtytchiants M. Nekipelov H. Ohm L. Roca H. Schade V. Serdyuk A. Sibirtsev V. Y. Sinitsyna H. J. Stein H. Stroeher S. Trusov Yu. Valdau C. Wilkin P. Wuestner Q. J. Ye
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classification ⚛️ nucl-ex
keywords momentumdependencebeencrossnuclearproductionrangesection
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The production of phi mesons in proton collisions with C, Cu, Ag, and Au targets has been studied via the phi -> K+K- decay at an incident beam energy of 2.83 GeV using the ANKE detector system at COSY. For the first time, the momentum dependence of the nuclear transparency ratio, the in-medium phi width, and the differential cross section for phi meson production at forward angles have been determined for these targets over the momentum range of 0.6 - 1.6 GeV/c. There are indications of a significant momentum dependence in the value of the extracted phi width, which corresponds to an effective phi-N absorption cross section in the range of 14 - 21 mb.

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Cited by 2 Pith papers

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