Dipenguin contribution to <span class="aps-inline-formula"><math xmlns="http://www.w3.org/1998/Math/MathML" display="inline"><mrow><msup><mrow><mi>D</mi></mrow><mrow><mn>0</mn></mrow></msup></mrow><mo>−</mo><mrow><msup><mover><mrow><mi>D</mi></mrow><mrow><mi>¯</mi></mrow></mover><mrow><mn>0</mn></mrow></msup></mrow></math></span> mixing

Alexey A. Petrov

doi:10.1103/PhysRevD.56.1685

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Dipenguin contribution to $D^{0} - {\bar{D}}^{0}$ mixing

Alexey A. Petrov

Department of Physics and Astronomy, University of Massachusetts, Amherst, Massachusetts 01003

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Phys. Rev. D 56, 1685 – Published 1 August, 1997

DOI: https://doi.org/10.1103/PhysRevD.56.1685

Abstract

We study the impact of the four-quark dipenguin operator on $D^{0} - {\bar{D}}^{0}$ mixing. It is shown to contribute to the short distance piece at the same order of magnitude as the box diagram.

References (8)

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[c1] A. Datta and D. Kumbhakar, Z. Phys. C 27, 515 (1985); H. Y. Cheng, Phys. Rev. D 26, 143 (1982).

[c2] J. F. Donoghue, E. Golowich, B. Holstein, and J. Trampetic, Phys. Rev. D 33, 179 (1986).

[c3] J. F. Donoghue, E. Golowich, and G. Valencia, Phys. Rev. D 33, 1387 (1986).

[c4] J. O. Eeg and I. Picek, Z. Phys. C 39, 521 (1988); Nucl. Phys. B292, 745 (1987), and references therein.

[c5] J.-M. Gerard and W.-S. Hou, Phys. Rev. D 43, 2909 (1991).

[c6] L. Wolfenstein, Phys. Lett. 164B, 170 (1985).

[c7] H. Georgi, Phys. Lett. B 297, 353 (1992); T. Ohl, G. Ricciardi, and E. H. Simmons, Nucl. Phys. B403, 605 (1993).

[c8] A. Szczepaniak, E. M. Henley, and S. J. Brodsky, Phys. Lett. B 243, 287 (1990).

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Dipenguin contribution to $D^{0} - {\bar{D}}^{0}$ mixing

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References (8)

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Dipenguin contribution to D0−D¯0 mixing

Abstract

References (8)

Dipenguin contribution to $D^{0} - {\bar{D}}^{0}$ mixing