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Title: Momentum dependence of the phi-meson nuclear transparency
Author: Hartmann, M.
Kiselev, Yu. T.
Polyanskiy, A.
Paryev, E. Ya.
Büscher, M.
Chiladze, D.
Dymov, S.
Dzyuba, A.
Gebel, R.
Hejny, V.
Kämpfer, B.
Keshelashvili, I.
Koptev, V.
Lorentz, B.
Maeda, Y.
Magas, V. K.
Merzliakov, S.
Mikirtytchiants, S.
Nekipelov, M.
Ohm, H.
Keywords: Física nuclear
Col·lisions (Física nuclear)
Partícules (Física nuclear)
Nuclear physics
Collisions (Nuclear physics)
Particles (Nuclear physics)
Issue Date: 2012
Publisher: American Physical Society
Abstract: The production of φ mesons in proton collisions with C, Cu, Ag, and Au targets has been studied via the φ → 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 φ width, and the differential cross section for φ -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 φ width, which corresponds to an effective φN absorption cross section in the range of 14-21 mb.
Note: Reproducció del document publicat a:
It is part of: Physical Review C, 2012, vol. 85, num. 3, p. 035206-1-035206-8
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ISSN: 0556-2813
Appears in Collections:Articles publicats en revistes (Física Quàntica i Astrofísica)

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