Direct-Channel Interference in <span class="aps-inline-formula"><math xmlns="http://www.w3.org/1998/Math/MathML" display="inline"><mrow><mrow><mover><mrow><mi>N</mi></mrow><mrow><mi>¯</mi></mrow></mover></mrow></mrow><mi>N</mi><mo>→</mo><mi>K</mi><mrow><mrow><mover><mrow><mi>K</mi></mrow><mrow><mi>¯</mi></mrow></mover></mrow></mrow></math></span> at Low Energy and Meson Towers

D. Cline; R. Rutz

doi:10.1103/PhysRevD.5.778

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Direct-Channel Interference in $\bar{N} N \to K \bar{K}$ at Low Energy and Meson Towers

D. Cline and R. Rutz

Department of Physics, University of Wisconsin, Madison, Wisconsin 53706

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Phys. Rev. D 5, 778 – Published 1 February, 1972

DOI: https://doi.org/10.1103/PhysRevD.5.778

Abstract

The strong suppression of the cross section for the low-energy reaction $\bar{p} p \to K_{S}^{0} K_{S}^{0}$ as compared to $\bar{p} p \to K_{S}^{0} K_{L}^{0}$ and $\bar{p} p \to K^{+} K^{-}$ is explained as being due to the direct-channel excitation of two massive $C = + 1$ boson resonances with $I = 1$ and $I = 0$ , respectively. It is thus suggested that two $J^{P} = 2^{+}$ states with masses below 2.0 GeV and with approximately equal couplings to the $\bar{N} N$ and $K \bar{K}$ systems, and produced in phase, provide a "natural" explanation of the data. Above $1.2 \frac{GeV}{c}$ the interference effects appear to disappear and possibly a new physical mechanism for $K \bar{K}$ production is observed.

References (14)

H. L. Lipkin, Phys. Rev. 176, 1709 (1968)
Omitted endnote
[4] [5]
W. Beusch, in Experimental Meson Spectroscopy, edited by C. Baltay and A. Rosenfeld (Columbia Univ. Press, New York, 1970), p. 185
B. D. Hyams et al., Nucl. Phys. B22, 189 (1970)
D. Cline, in a talk given at the Argonne National Laboratory Workshop on Meson Spectroscopy (unpublished) University of Wisconsin report (unpublished)
G. Veneziano, Nuovo Cimento 57A, 190 (1968)
R. Bizzarri et al., Lett. Nuovo Cimento 1, 749 (1969) H. Nicholson et al., Phys. Rev. Letters 23, 603 (1969) B. Krinsky, M. Dickinson, C. R. Sun, and K. Topka, Bull. Am. Phys. Soc. 16, 138 (1971) M. Dickinson, B. Krinsky, and C. R. Sun, ibid. 15, 638 (1970) B. Lörstad, Ch. D'Andlau, A. Astier, J. Cohen-Genouna, M. Della Negra, M. Aguilar-Benitez, J. Barlow, L. D. Jacobs, P. Malechiand, and L. Montanet, in Proceedings of the Fifth International Conference on Elementary Particles, Lund, Sweden, 1969 (unpublished) J. Barlow et al., Nuovo Cimento 50, 701 (1967) N. K. Sehgal, Ph.D. thesis, University of Wisconsin, 1969 (unpublished)
A. Benvenuti et al., Phys. Rev. Letters 27, 283 (1971)
Omitted endnote
C. Baltay et al., Phys. Rev. Letters 17, 207 (1965)
Omitted endnote
V. Barger and D. Cline, Phys. Letters 25B, 415 (1967)
B. Barish et al., Phys. Rev. Letters 23, 607 (1969)

[c1] H. L. Lipkin, Phys. Rev. 176, 1709 (1968)

[c2] Omitted endnote

[c3] [4] [5]

[c4] W. Beusch, in Experimental Meson Spectroscopy, edited by C. Baltay and A. Rosenfeld (Columbia Univ. Press, New York, 1970), p. 185

[c5] B. D. Hyams et al., Nucl. Phys. B22, 189 (1970)

[c6] D. Cline, in a talk given at the Argonne National Laboratory Workshop on Meson Spectroscopy (unpublished) University of Wisconsin report (unpublished)

[c7] G. Veneziano, Nuovo Cimento 57A, 190 (1968)

[c8] R. Bizzarri et al., Lett. Nuovo Cimento 1, 749 (1969) H. Nicholson et al., Phys. Rev. Letters 23, 603 (1969) B. Krinsky, M. Dickinson, C. R. Sun, and K. Topka, Bull. Am. Phys. Soc. 16, 138 (1971) M. Dickinson, B. Krinsky, and C. R. Sun, ibid. 15, 638 (1970) B. Lörstad, Ch. D'Andlau, A. Astier, J. Cohen-Genouna, M. Della Negra, M. Aguilar-Benitez, J. Barlow, L. D. Jacobs, P. Malechiand, and L. Montanet, in Proceedings of the Fifth International Conference on Elementary Particles, Lund, Sweden, 1969 (unpublished) J. Barlow et al., Nuovo Cimento 50, 701 (1967) N. K. Sehgal, Ph.D. thesis, University of Wisconsin, 1969 (unpublished)

[c9] A. Benvenuti et al., Phys. Rev. Letters 27, 283 (1971)

[c10] Omitted endnote

[c11] C. Baltay et al., Phys. Rev. Letters 17, 207 (1965)

[c12] Omitted endnote

[c13] V. Barger and D. Cline, Phys. Letters 25B, 415 (1967)

[c14] B. Barish et al., Phys. Rev. Letters 23, 607 (1969)

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Direct-Channel Interference in $\bar{N} N \to K \bar{K}$ at Low Energy and Meson Towers

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Direct-Channel Interference in N¯N→KK¯ at Low Energy and Meson Towers

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Direct-Channel Interference in $\bar{N} N \to K \bar{K}$ at Low Energy and Meson Towers