We present a study of the sensitivity to rare D decays of a Tau-Charm Factory detector. We consider both flavour changing neutral currents and family number violating decays, and evaluate the impact of varying the solid angle coverage, lepton identification and neutral hadron identification of the detector. We find that stringent demands must be made on the detector design in order to effective...

Previously, motivation for enhanced b → sg from new flavor physics has centered on discrepancies between theory and experiment. Here two experimental hints are considered: (1) updated measurements of the charm multiplicity and B(B → Xcc̄s) at the Υ(4S) imply B(B → Xno charm) ≈ 12.4 ± 5.6%, (2) the B → KX and B → K+/K−X branching fractions are in excess of conventional B → Xc → KX yields by about...

The charm physics program accessible to a Tau-Charm Factory is summarized. Semileptonic,’ leptonic, hadronic, rare and forbidden charm decay modes are discussed, as well as 00 charm sector. The theoretical b” mixing and CP violation in the 73 ectations in the Standard Model and beyond as well as the experiment capabilities of a Tau-Charm Factory are examined for each of the above processes.

Charm production from the direct reconstruction of D (D → Kπ up to 2 GeV/c) and indirect lepton measurements via charm semileptonic decays (c → e+X at 0.9<pT<5.0 GeV/c and c → μ + X at 0.17<pT<0.25 GeV/c) at sNN = 200 GeV Au+Au collisions are analyzed. The transverse momentum (pT ) spectra and the nuclear modification factors for D and for leptons from heavy flavor decays is presented. Scaling ...

We present updated results of an SU(3)-flavor analysis of D→ PP decay data including linear breaking and no further assumptions. The global fit is consistent with nominal (∼ 30%) SU(3)F breaking and returns enhanced penguin (triplet) contributions. Their size is driven, in addition to ∆ACP, by the CP asymmetries of D0→ KSKS, Ds→ KSπ and Ds→ K+π0 decays. It is therefore especially important to i...

A k-ary charm bracelet is an equivalence class of length n strings with the action on the indices by the additive group of the ring of integers modulo n extended by the group of units. By applying an O(n3) amortized time algorithm to generate charm bracelet representatives with a specified content, we construct 29 new periodic Golay pairs of length 68.

We give a mass formula for computing the mass spectrum of mesons. By this formula we show that there are many mesons with their masses corresponding to a prime number. In particular we show that all strange mesons are with their masses corresponding to a prime number. With these prime numbers indexing the mesons we give a classification of mesons. We set up a knot model of mesons to derive this...

In this talk I brie y review the cosmological importance of CP violation and the status of calculations of baryogenisis in the context of the Standard Model. I then turn to a discussion of Standard Model Predictions for CP violation in B decays, stressing the importance of multiple measurements to overconstrain the model parameters and thus search for indications of beyond-Standard-Model physic...