Relating direct CP violation in D decays and the forward-backward asymmetry in $t\bar{t}$ production

Abstract

The CDF and LHCb experiments have recently provided two intriguing hints for new physics: a large forward-backward asymmetry in $t\bar{t}$ production, and a direct CP asymmetry in D decays of order a percent. In both cases, flavor non-universal interactions are required in the up sector, raising the possibility that the two effects come from one and the same new physics source. We show that a minimal model, with an extra scalar doublet, previously suggested to explain the top data, gives -- without any modifications or additions -- a contribution to CP violation in charm decays that is of the right size.

4 pages. v3: A calculation of the contribution to epsilon^prime is presented; Conclusions unchanged

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Cited by in corpus (32)

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• CP asymmetries in singly-Cabibbo-suppressed $D$ decays to two pseudoscalar mesons
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• SU(3) Sum Rules for Charm Decay
• SU(3)-Flavor Anatomy of Non-Leptonic Charm Decays
• Revisiting CP violation in $D\to PP$ and $VP$ decays
• Branching ratios and direct CP asymmetries in $D\to PV$ decays
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• Brief Review of Charm Physics
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• Ultraviolet Completions of Axigluon Models and Their Phenomenological Consequences
• B^\pm -> D K^\pm with direct CP violation in charm
• Non-leptonic decays of Charmed mesons into two Pseudoscalars
• Nonleptonic Charm Decays and CP Violation
• Nonuniversality of indirect CP asymmetries in $D\to \pi \pi ,KK$ decays
• SU(3)F in nonleptonic charm decays
• Direct CP Violation in D -> hh Decays
• A search for time-integrated CP violation in D0 -> h- h+ decays
• Study of CP Violation in $D^{\pm }\to K^{\ast }(892{)}^0{\pi }^{\pm }+{\bar{K}}^{\ast }(892{)}^0{\pi }^{\pm }\to K_{S,L}^0{\pi }^0{\pi }^{\pm }$ Decays
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