D0-D0bar Mixing
Ligeti, Zoltan
Original · EN
The main challenge in the Standard Model calculation of the mass and width difference in D⁰ - D⁰ mixing is to estimate the size of SU(3) breaking. We prove that mixing occurs in the Standard Model only at second order in SU(3) violation. We calculate SU(3) breaking due to phase space effects, and find that it can naturally give rise to a width difference ΔΓ/ 2Γ 1%, potentially reducing the sensitivity of D mixing to new physics.
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