D−D¯ mixing in the framework of the HQE revisited.

Bobrowski, M.; Lenz, A.; Riedl, J.; Rohrwild, J.

Abstract

We reconsider the leading HQE contributions to the absorptive part of the mixing amplitude of neutral D mesons by taking also αs corrections and subleading 1/mc corrections into account. We show that these contributions to Γ12 do not vanish in the exact SU(3)F limit and they also can have a large phase. Moreover, we give an example of a new physics model that can enhance these leading HQE terms to Γ12, which are orders of magnitude lower than the current experimental expectation, by a factor in the upper double-digit range.

Citation

Bobrowski, M., Lenz, A., Riedl, J., & Rohrwild, J. (online). D−D¯ mixing in the framework of the HQE revisited. arXiv,

• Journal Article Type: Article
• Deposit Date: Mar 15, 2013
• Journal: arXiv
• Public URL: https://durham-repository.worktribe.com/output/1487255
• Publisher URL: http://arxiv.org/abs/arXiv:0904.3971