Implication of the D^0 Width Difference On CP-Violation in D^0-\bar D^0 Mixing

Details Implication of the D^0 Width Difference On CP-Violation in D^0-\bar D^0 Mixing Implication of the D^0 Width Difference On CP-Violation in D^0-\bar D^0 Mixing

2007-04-05

arxiv.org/abs/0704.0786v2

J.Phys.G34:2199-2206,2007

Physics

High Energy Physics

High Energy Physics - Phenomenology

9 pages; typos removed

Scientific paper

10.1088/0954-3899/34/10/009

Both BaBar and Belle have found evidence for a non-zero width difference in the $D^0$-$\bar D^0$ system. Although there is no direct experimental evidence for CP-violation in $D$ mixing (yet), we show that the measured values of the width difference $y\sim \Delta\Gamma$ already imply constraints on the CP-violating phase in $D$ mixing, which, if significantly different from zero, would be an unambiguous signal of new physics.

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