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Phys. Rev. C 72, 037602 (2005) [4 pages]

Inclusive pion double charge exchange on 16O above the Δ resonance

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A. P. Krutenkova1,*, T. Watanabe2, D. Abe2, Y. Fujii2, O. Hashimoto2, V. V. Kulikov1, T. Nagae3, M. Nakamura4, H. Noumi3, H. Outa3, P. K. Saha5,6, T. Takahashi2, and H. Tamura2
1Institute of Theoretical and Experimental Physics, Moscow 117218, Russia
2Department of Physics, Tohoku University, Sendai 980-8578, Japan
3High Energy Accelerator Research Organization (KEK), Tsukuba, Ibaraki 305-0801, Japan
4Graduate School of Science, University of Tokyo, Tokyo 113-0033, Japan
5Laboratory of Physics Electro-Communication University, Neyagawa, Osaka 572-8530, Japan
6Japan Atomic Energy Research Institute, Tokai, Ibaraki 319-1195, Japan

Received 24 February 2005; published 22 September 2005

The forward inclusive pion double charge exchange reaction, 16O(π-+)X, at T0=0.50 and 0.75 GeV has been studied in the kinematic region where an additional pion production is forbidden by energy-momentum conservation. The experiment was performed with the SKS spectrometer at KEK PS. The measured ratio of double charge exchange cross-section for these energies dσ(0.50 GeV)/dΩ〉/〈dσ(0.75 GeV)/dΩ〉=1.7±0.2, disagrees with the value of 7.2 predicted within the conventional sequential single charge exchange mechanism. Possible reasons for the disagreement are discussed in connection with the Glauber inelastic rescatterings.

© 2005 The American Physical Society

URL:
http://link.aps.org/doi/10.1103/PhysRevC.72.037602
DOI:
10.1103/PhysRevC.72.037602
PACS:
13.75.Gx, 25.10.+s, 25.80.Gn

*Electronic address: Anna.Krutenkova@itep.ru