Momentum dependence of the phi-meson nuclear transparency - INSPIRE

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Momentum dependence of the phi-meson nuclear transparency

M. Hartmann
(
- Zurich, ETH and
- Julich, Forschungszentrum
)
,
Yu.T. Kiselev
(
- Moscow, ITEP
)
,
A. Polyanskiy
(
- Zurich, ETH and
- Julich, Forschungszentrum and
- Moscow, ITEP
)
,
E.Ya. Paryev
(
- Moscow, INR
)
,
M. Buscher
(
- Zurich, ETH and
- Julich, Forschungszentrum
)

Jan, 2012

9 pages

Published in:

Phys.Rev.C 85 (2012) 035206

e-Print:

1201.3517 [nucl-ex]

DOI:

10.1103/PhysRevC.85.035206

View in:

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Abstract: (arXiv)

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.

Note:

9 pages, 5 figures

13.75.-n
14.40.Be
13.25.-k
Phi(1020): hadroproduction
nucleus: transparency
momentum dependence
differential cross section: measured
Juelich COSY PS
ANKE
experimental results

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Figures(7)

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