Question of a second neutral pion
Author:
Publisher
Springer Science and Business Media LLC
Subject
Astronomy and Astrophysics,Nuclear and High Energy Physics,Atomic and Molecular Physics, and Optics
Link
http://link.springer.com/content/pdf/10.1007/BF02725111.pdf
Reference16 articles.
1. A. M. Baldin:Nuovo Cimento 8, 569 (1958).
2. Strictly speaking, the σ−/σ+ ratio does not depend on the coupling constant; however, it depends on an unknown parameterN (−) (see ref. (3)). The ratio 1.4 is obtained it this parameter is chosen to yield the observed value (4) of σ+ with a value off 2=0.08. SettingN (−)=0 gives a ratio of 1.3 but requiresf 2=0.06 to obtain σ+ correctly. On the other hand, ifN (−) is adjusted to give σ−/σ+=2.0, we would requiref 2=0.32 to achieve agreement with σ+.
3. G. F. Chew, M. L. Goldberger, F. E. Low andY. Nambu:Phys. Rev.,106, 1345 (1957).
4. M. Beneventano, G. Bernardini, D. Carlson-Lee, G. Stoppini andL. Tau:Nuovo Cimento,4, 323 (1956).
5. D. Nagle, F. Hildebrand andR. Plano:Phys. Rev.,105, 718 (1957).
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1. Angular correlation of gamma-quanta produced by negative pions stopping in hydrogen;Nuclear Physics B;1969-03
2. Photopion Production From Deuterium Near Threshold;Physical Review;1965-03-08
3. Existence of a stable neutral meson;Il Nuovo Cimento;1961-09
4. Direct electronic decay of three π0’s emitted from an antineutron annihilation star;Il Nuovo Cimento;1961-06
5. Search for a neutral meson of zero I-spin;Il Nuovo Cimento;1961-03
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