Standard Model prediction and new physics tests for D^sup 0^ [right arrow] h^sub 1^^sup +^h^sub 2^^sup -^l^sup +^l^sup -^(h = [pi], K; l = e, [mu])

Abstract

(ProQuest: ... denotes formulae and/or non-USASCII text omitted; see image)

Abstract

Motivated by the recent evidence for direct CP-violation in D ^sup 0^ [arrow right] h ^sup +^ h ^sup -^ decays, we provide an exhaustive study of both Cabibbo-favored and Cabibbo-suppressed (singly and doubly) ... decays. In particular, we study the Dalitz plot for the long-distance contributions in the ... parameter space. We find that near-resonant effects, i.e., ... with V = [rho], K*, , are sizeable and even dominant (over Bremsstrahlung) for the [mu] ^sup +^ [mu] ^sup -^ decay modes, bringing the branching ratios close to the LHCb reach. We also provide a detailed study of the angular asymmetries for such decays and identify signatures for new physics detection. In particular, new physics signals can be neatly isolated in asymmetries involving the semileptonic operator Q ^sub 10^, where for typical new physics scenarios the effects can be as sizeable as ...(1%) for the doubly Cabibbo-suppressed modes.