Physics – Nuclear Physics – Nuclear Theory
Scientific paper
2008-10-07
J.Phys.G36:015103,2009
Physics
Nuclear Physics
Nuclear Theory
10 pages,8 figures; the slightly extended version of this paper will be published in J.Phys.G
Scientific paper
10.1088/0954-3899/36/1/015103
In the framework of the nuclear spectral function approach for incoherent primary proton-nucleon and secondary pion-nucleon production processes we study the inclusive $\phi$ meson production in the interaction of 2.83 GeV protons with nuclei. In particular, the A- and momentum-dependences of the absolute and relative phi meson yields are investigated within the different scenarios for its in-medium width. Our model calculations take into account the acceptance window of the ANKE facility used in a recent experiment performed at COSY. They show that the pion-nucleon production channel contributes distinctly to the "low-momentum" $\phi$ creation in heavy nuclei in the chosen kinematics and, hence, has to be taken into consideration on close examination of the dependences of the phi meson yields on the target mass number with the aim to get information on its width in the medium.
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