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• W1539894313 abstract "We study the nine possible rare charm meson decays $stackrel{ensuremath{rightarrow}}{D}{mathrm{Pl}}^{+}{l}^{ensuremath{-}}$ $(P=ensuremath{pi},K,ensuremath{eta},{ensuremath{eta}}^{ensuremath{'}})$ using heavy meson chiral Lagrangians and find them to be dominated by the long distance contributions. The decay ${D}^{+}ensuremath{rightarrow}{ensuremath{pi}}^{+}{l}^{+}{l}^{ensuremath{-}},$ with a branching ratio $ensuremath{sim}1ifmmodetimeselsetexttimesfi{}{10}^{ensuremath{-}6},$ is expected to have the best chances for an early experimental discovery. The short distance contribution in the five Cabibbo suppressed channels arises via the $stackrel{ensuremath{rightarrow}}{c}{mathrm{ul}}^{+}{l}^{ensuremath{-}}$ transition; we find that this contribution is detectable only in the $stackrel{ensuremath{rightarrow}}{D}ensuremath{pi}{l}^{+}{l}^{ensuremath{-}}$ decay, where it dominates the differential spectrum at high-${q}^{2}.$ The general minimal supersymmetric standard model can enhance the $stackrel{ensuremath{rightarrow}}{c}{mathrm{ul}}^{+}{l}^{ensuremath{-}}$ rate by up to an order of magnitude; its effect on the $stackrel{ensuremath{rightarrow}}{D}{mathrm{Pl}}^{+}{l}^{ensuremath{-}}$ rates is small since the $stackrel{ensuremath{rightarrow}}{c}{mathrm{ul}}^{+}{l}^{ensuremath{-}}$ enhancement is sizable in the low-${q}^{2}$ region, which is inhibited in the hadronic decay." @default.
• W1539894313 created "2016-06-24" @default.
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• W1539894313 date "2001-11-07" @default.
• W1539894313 modified "2023-09-27" @default.
• W1539894313 title "Rare charm meson decays<mml:math xmlns:mml=http://www.w3.org/1998/Math/MathML display=inline><mml:mrow><mml:mrow><mml:mover><mml:mrow><mml:mi>D</mml:mi></mml:mrow><mml:mrow><mml:mo>→</mml:mo></mml:mrow></mml:mover></mml:mrow></mml:mrow><mml:mrow><mml:msup><mml:mrow><mml:mi>Pl</mml:mi></mml:mrow><mml:mrow><mml:mo>+</mml:mo></mml:mrow></mml:msup></mml:mrow><mml:mrow><mml:msup><mml:mrow><mml:mi>l</mml:mi></mml:mrow><mml:mrow><mml:mi>−</mml:mi></mml:mrow></mml:msup></mml:mrow></mml:math>and<mml…" @default.
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• W1539894313 doi "https://doi.org/10.1103/physrevd.64.114009" @default.
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