APS » PROLA » Phys. Rev. Lett. » Volume 89 » Issue 7

Phys. Rev. Lett. 89, 072301 (2002) [4 pages]

Sigma-Nucleus Potential in A=28
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H. Noumi et al.
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 See Also: Erratum

Received 16 December 2001; published 30 July 2002

We have studied the (π-,K+) reaction on a silicon target to investigate the sigma-nucleus potential. The inclusive spectrum was measured at a beam momentum of 1.2  GeV/c with an energy resolution of 3.3 MeV (FWHM) by employing the superconducting kaon spectrometer system. The spectrum was compared with theoretical calculations within the framework of the distorted-wave impulse approximation, which demonstrates that a strongly repulsive sigma-nucleus potential with a nonzero size of the imaginary part reproduces the observed spectrum.


©2002 The American Physical Society

URL: http://link.aps.org/abstract/PRL/v89/e072301
DOI: 10.1103/PhysRevLett.89.072301
PACS: 21.80.+a, 13.75.Ev, 25.80.Hp, 25.80.Nv

* Present address: Laboratory of Physics, Osaka Electro-Communication University, Neyagawa, Osaka 572-8530, Japan.
† Present address: Brookhaven National Laboratory, Upton, New York 11973.
‡ Present address: Tohoku Gakuin University, Tagajo, Miyagi 985-8537, Japan.

See Also

Erratum: H. Noumi et al., Erratum: Sigma-Nucleus Potential in A=28 [Phys. Rev. Lett. 89, 072301 (2002)], Phys. Rev. Lett. 90, 049902 (2003)

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