On the Possibility of Observing a{sup 0}{sub 0}(980) - f{sub 0}(980) Mixing in the Reaction {pi}{sup -}p {yields} {eta}{pi}{sup 0}n on a Polarized Target
It is shown that the spin asymmetry in the reaction {pi}{sup -}p {yields} a{sup 0}{sub 0}(980)n {yields} ({eta}{pi}{sup 0}){sub S} n is highly sensitive to the mixing of the a{sup 0}{sub 0}(980) and f{sub 0}(980) resonances. At low momentum transfers (namely, in any of the intervals 0 {<=} -t {&l...
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Published in | Physics of atomic nuclei Vol. 68; no. 12 |
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Main Authors | , |
Format | Journal Article |
Language | English |
Published |
United States
01.12.2005
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Subjects | |
Online Access | Get full text |
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Summary: | It is shown that the spin asymmetry in the reaction {pi}{sup -}p {yields} a{sup 0}{sub 0}(980)n {yields} ({eta}{pi}{sup 0}){sub S} n is highly sensitive to the mixing of the a{sup 0}{sub 0}(980) and f{sub 0}(980) resonances. At low momentum transfers (namely, in any of the intervals 0 {<=} -t {<=} 0.025, ..., 0.1 GeV{sup 2}), the asymmetry normalized in such a way that it takes values between -1 and 1 must undergo a jump close in magnitude to unity in the region of the {eta}{pi}{sup 0} invariant masses between 0.965 and 1.01 GeV. A large jump of the asymmetry is due exclusively to a{sup 0}{sub 0}(980) - f{sub 0}(980) mixing. A very high resolution in the {eta}{pi}{sup 0} invariant mass is not required for observing the jump of the asymmetry. The energy dependence of the polarization effect is expected to be rather weak; therefore, the polarization effect in question can be studied at any high energy--for example, in the range between 8 and 100 GeV. |
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ISSN: | 1063-7788 1562-692X |
DOI: | 10.1134/1.2149086 |