<span class="aps-inline-formula"><math xmlns="http://www.w3.org/1998/Math/MathML" display="inline"><mrow><msubsup><mrow><mi>K</mi></mrow><mrow><mn>1</mn></mrow><mrow><mn>0</mn></mrow></msubsup></mrow><mo>−</mo><mrow><msubsup><mrow><mi>K</mi></mrow><mrow><mn>2</mn></mrow><mrow><mn>0</mn></mrow></msubsup></mrow></math></span> Mass Difference

R. K. Carnegie; R. Cester; V. L. Fitch; M. Strovink; L. R. Sulak

doi:10.1103/PhysRevD.4.1

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$K_{1}^{0} - K_{2}^{0}$ Mass Difference

R. K. Carnegie^*, R. Cester^†, V. L. Fitch, M. Strovink, and L. R. Sulak^‡

Joseph Henry Laboratories, Princeton University, Princeton, New Jersey 08540

^*Present address: Stanford Linear Accelerator, Stanford, Calif. 94305.
^†Present address: Istituto di Fisica, Università di Torino, Torino, Italy 10125.
^‡Present address: Ecole de Physique de l'Université de Genève, 1211 Genève 4, Switzerland.

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Phys. Rev. D 4, 1 – Published 1 July, 1971

DOI: https://doi.org/10.1103/PhysRevD.4.1

Abstract

The $K_{1}^{0} - K_{2}^{0}$ mass difference has been measured by the "gap method" to high precision. This method is especially insensitive to possible systematic biases. The measurement yields $| Δ M | = (0.534 \pm 0.007) \times 10^{10}$ $\sec^{- 1}$ . Expressed in units of the inverse $K_{1}^{0}$ lifetime, $τ_{1} = 0.862 \times 10^{- 10}$ sec, $| δ | = 0.460 \pm 0.006$ , or equivalently, 26.4° ± 0.3° per $K_{1}^{0}$ mean decay length.

References (12)

M. Gell-Mann and A. Pais, Phys. Rev. 97, 1387 (1955)
A. Engler, Progress in Nuclear Physics (Pergamon, New York, 1970), Vol. 11, p. 271
L. B. Okun and B. Pontecorvo, Zh. Eksperim. i Teor. Fiz. 32, 1587 (1957) [Soviet Phys. JETP 5, 1297 (1957)]
F. Low, Comments Nucl. Particle Phys. 2, 33 (1968)
A. Bohm, P. Darriulat, C. Grosso, V. Kaftanov, K. Kleinknecht, H. L. Lynch, C. Rubbia, H. Ticho, and K. Tittel, Phys. Letters 27B, 321 (1968)
D. A. Jensen, S. H. Aronson, R. D. Ehrlich, D. Fryberger, C. Nissim-Sabat, V. L. Telegdi, H. Goldberg, and J. Solomon, Phys. Rev. Letters 23, 615 (1969)
J. H. Christenson, J. W. Cronin, V. L. Fitch, and R. Turlay, Phys. Rev. 140, B74 (1965)
R. K. Carnegie, thesis, Princeton University Technical Report No. 44, 1967 (unpublished) R. K. Carnegie, V. L. Fitch, T. Kamae, R. F. Roth, J. S. Russ, and W. Vernon, Bull. Am. Phys. Soc. 13, 16 (1968)
S. H. Aronson, R. D. Ehrlich, H. Hofer, D. A. Jensen, R. A. Swanson, V. L. Telegdi, H. Goldberg, J. Solomon, and D. Fryberger, Phys. Rev. Letters 25, 1057 (1970) ibid.25, 1316 (E) (1970)
G. Gianelli, Proceedings of Informal Meeting on Filmless Spark Chamber Techniques and Associated Computer Use, CERN, 1964, p. 325 (unpublished) V. Perez-Mendez and J. M. Pfab, Nucl. Instr. Methods 33, 141 (1965)
H. Faissner, H. Foeth, A. Staude, K. Tittel, P. Darriulat, K. Kleinknecht, C. Rubbia, J. Sandweiss, M. I. Ferrero, and C. Grosso, Phys. Letters 30B, 204 (1969)
M. Cullen, P. Darriulat, J. Deutsch, H. Foeth, C. Grosso, M. Holder, K. Kleinknecht, E. Radermacher, C. Rubbia, D. Shambroom, M. Scire, A. Staude, and K. Tittel, Phys. Letters 32B, 523 (1970)

[c1] M. Gell-Mann and A. Pais, Phys. Rev. 97, 1387 (1955)

[c2] A. Engler, Progress in Nuclear Physics (Pergamon, New York, 1970), Vol. 11, p. 271

[c3] L. B. Okun and B. Pontecorvo, Zh. Eksperim. i Teor. Fiz. 32, 1587 (1957) [Soviet Phys. JETP 5, 1297 (1957)]

[c4] F. Low, Comments Nucl. Particle Phys. 2, 33 (1968)

[c5] A. Bohm, P. Darriulat, C. Grosso, V. Kaftanov, K. Kleinknecht, H. L. Lynch, C. Rubbia, H. Ticho, and K. Tittel, Phys. Letters 27B, 321 (1968)

[c6] D. A. Jensen, S. H. Aronson, R. D. Ehrlich, D. Fryberger, C. Nissim-Sabat, V. L. Telegdi, H. Goldberg, and J. Solomon, Phys. Rev. Letters 23, 615 (1969)

[c7] J. H. Christenson, J. W. Cronin, V. L. Fitch, and R. Turlay, Phys. Rev. 140, B74 (1965)

[c8] R. K. Carnegie, thesis, Princeton University Technical Report No. 44, 1967 (unpublished) R. K. Carnegie, V. L. Fitch, T. Kamae, R. F. Roth, J. S. Russ, and W. Vernon, Bull. Am. Phys. Soc. 13, 16 (1968)

[c9] S. H. Aronson, R. D. Ehrlich, H. Hofer, D. A. Jensen, R. A. Swanson, V. L. Telegdi, H. Goldberg, J. Solomon, and D. Fryberger, Phys. Rev. Letters 25, 1057 (1970) ibid.25, 1316 (E) (1970)

[c10] G. Gianelli, Proceedings of Informal Meeting on Filmless Spark Chamber Techniques and Associated Computer Use, CERN, 1964, p. 325 (unpublished) V. Perez-Mendez and J. M. Pfab, Nucl. Instr. Methods 33, 141 (1965)

[c11] H. Faissner, H. Foeth, A. Staude, K. Tittel, P. Darriulat, K. Kleinknecht, C. Rubbia, J. Sandweiss, M. I. Ferrero, and C. Grosso, Phys. Letters 30B, 204 (1969)

[c12] M. Cullen, P. Darriulat, J. Deutsch, H. Foeth, C. Grosso, M. Holder, K. Kleinknecht, E. Radermacher, C. Rubbia, D. Shambroom, M. Scire, A. Staude, and K. Tittel, Phys. Letters 32B, 523 (1970)

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$K_{1}^{0} - K_{2}^{0}$ Mass Difference