1. Direct CP violation in D  hh World measurements of In New Physics: CPV up to ~1%; If CPV ~1% were observed, is it NP or hadronic enhancement of SM? Strategy: analyze many channels to elucidate source of CPV. 50ab -1 BELLE-II data can reach to sensitivity of 10 -3 ~10 -4 for different channels Measurement of direct CPV at threshold at HIEPAF with 1ab -1 data, sensitivity: 10 -3 ~10 -4 clean background and better systematic control in threshold production would strengthen competitions with future B projects No CPV observed yet in charm sector. 1

2. Determination of the γ angle in the CKM matrix ADS method: use D doubly Cabibbo-suppressed decays, e.g. D 0  K + π – With 1 ab −1 at HIEPAF: σ(cosδ Kπ ) ∼ 0.007; σ(δ Kπ ) ∼ 2 o With this data, BELLE-II expects σ(γ) ∼ 5 o ; upgraded LHCb: σ(γ) ∼ 1.3 o GGSZ method: use Dalitz plot analysis of 3-body D 0 decays, e.g. K s π + π - ; high statistics; need precise Dalitz model Belle results from GSSZ method in 2012: γ=(77±15±4±4) o HIEPAF would reduce the contribution of D Dalitz model to a comfort level of ~0.1 o, since expected precision from future B projects would be ~2 o. The cleanest way to extract γ is from B  DK decays: current uncertainty σ( γ ) ~10~15⁰ however, theoretical error: 10 -6 (!) over-constrain the Unitarity Triangle Information of D decay strong phase is needed, which can only be accessed through quantum coherence of DD production at threshold: from D decay model 2

3. D–D mixing at HIEPAF charm mixing is established! D 0 – D 0 mixing rate at threshold with 1ab -1 data :  R M =(x 2 +y 2 )/2 ~ 10 -5 in K  and Ke channels  Probe y: Δ y CP < 0.1% While at LHCb by 2015 assuming 5 fb -1 @ 13 TeV:   x’ 2,y’) ± (0.004, 0.08)% with WS D 0  K   D 0 -D 0 WS rate asymmetry (like |q/p|) ±1%  y CP, A  ± 0.02% in D 0  K - K + and D 0      decays  (x,y) ± (0.045, 0.030)% using D 0  K S  Implication of strong phase  phase to relate (x’, y’) with (x, y)  upgraded LHCb/BELLE-II expect statistical error  1 ab -1 D data at HIEPAF would reach to the sub-level of the above stat. errors arXiv:1209.0172 3

4. Asymmetric beam? charm mixing at Ψ(4040)?  Flavor tagging(D 0  K - l + v)  Time-dependent measurement available  Require good  z/  t resolution (SVT) Considering Ψ(4040)  DD*  DDγ, DD pairs are in C-even states and charm mixing contribution is doubled compared with time-dependent (un-correlated) case. 3 ab -1 data @Ψ(3770): asymmetric γβ=0.2~0.6 3 ab -1 data @Ψ(4040) 50 fb -1 data at upgrade LHCb 50 ab -1 at BELLE-II courtesy by Neri&Rama CPV and D mixing reach 4

5. D rare decays FCNC processes: In the SM, short distance contribution is suppressed by GIM mechanism Long distance effect can enhance the rate to 10 -6 ~10 -7 Lepton Flavor, Lepton Number and Baryon Number violating decays are forbidden in the SM. However, NP models can allow at sizable levels. HIEPAF: 10 -8 ~10 -9  stringent constrains to NP models 1 ab -1 at HIEPAF would achieve the sensitivity to 10 -8 ~10 -9. So the SM can be strictly tested away from the dilepton resonances. HIEPAF can discriminate NP from SM by measuring:  D→Vl + l − : A FB asymmetry  D→Pl + l − : line shape of dilepton mass, to reveal the interference effect between long-distance and FCNC weak amplitude (NP amplitude);  expected number of events: 1~10k 5