This title appears in the Scientific Report :
2012
Please use the identifier:
http://dx.doi.org/10.1134/S1063778811120088 in citations.
Width of the phi meson in nuclear matter
Width of the phi meson in nuclear matter
The ratios of the cross sections for I -meson production induced by 2.83-GeV protons on Cu, Ag, and Au nuclei to the respective cross section for C nuclei were measured at the ANKE-COSY facility in the momentum range of 0.6-1.6 GeV/c and the angular range of 0 -8 . The product I mesons were identifi...
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Personal Name(s): | Polyanskiy, A. |
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Hartmann, Michael / Kiselev, Yu. T. / Paryev, E. Ya. / Büscher, Markus / Chiladze, D. / Dymov, S. N. / Dzyuba, A. / Gebel, Ralf / Hejny, Volker / Kämpfer, B. / Keshelashvili, I. / Koptev, V. / Lorentz, Bernd / Maeda, Y. / Merzliakov, Sergey / Mikirtytchiants, Sergey / Nekipelov, M. E. / Ohm, Henner / Schade, H. / Serdyuk, V. / Sibirtsev, A. / Sinitsyna, V. Yu. / Stein, Hans-Joachim / Stroeher, Hans / Trusov, S. V. / Valdau, Y. / Wilkin, C. / Wüstner, Peter | |
Contributing Institute: |
Experimentelle Hadrondynamik; IKP-2 Kernphysikalische Großgeräte; IKP-4 |
Published in: | Physics of atomic nuclei, 75 (2012) 1, S. 63-75 |
Imprint: |
New York, NY
AIP
2012
|
DOI: |
10.1134/S1063778811120088 |
Document Type: |
Journal Article |
Research Program: |
COSY Hadron Structure and Dynamics (HSD) |
Subject (ZB): | |
Publikationsportal JuSER |
The ratios of the cross sections for I -meson production induced by 2.83-GeV protons on Cu, Ag, and Au nuclei to the respective cross section for C nuclei were measured at the ANKE-COSY facility in the momentum range of 0.6-1.6 GeV/c and the angular range of 0 -8 . The product I mesons were identified by their decay I -> K (+) K (-'). The procedure used to separate kaon pairs was described in detail, and all sources of the background and their contribution to the resulting error in the values found for the above cross-section ratios were analyzed. The A dependence of the cross section for I -meson production was shown to obey the A (0.56+-0.03) law. The total width of the I meson at a normal nuclear density was extracted from a comparison of the measured cross-section ratios with the results of calculations based on two theoretical models. The resulting width value exceeds substantially both the vacuum width and the width expected in the absence of the nuclear-matter effect on the properties of the I meson. |