Inelastic Rescattering and Cp Asymmetries in D → Π + Π − , Π0 0 1 Π

نویسنده

  • Bing-Song Zou
چکیده

We study the direct CP violation induced by inelastic final state interaction (FSI) rescattering in D → ππ modes, and find that the resultant CP asymmetry is about 10 which is larger than ǫ in the K-system. Our estimation is based on well-established theories and experiment measured data, so there are almost no free parameters except the weak phase δ13 in the CKM matrix. PACS number(s): 11.30.Er, 13.25.Ft, 13.25.-k, 13.75.Lb This work is partly supported by the National Natural Science Foundation of China (NSFC)

برای دانلود رایگان متن کامل این مقاله و بیش از 32 میلیون مقاله دیگر ابتدا ثبت نام کنید

ثبت نام

اگر عضو سایت هستید لطفا وارد حساب کاربری خود شوید

منابع مشابه

Rescattering effects in charmless Bu,d,s → PP decays

Final-state interaction effects in charmless Bu,d,s → PP decays are studied. We investigate the B 0 → π+π−, π0π0 rates and the Kπ direct CP violations, which lead to the so-called Kπ puzzle in CP violation. Our main results are as follows: (i) Results are in agreement with data in the presence of FSI. (ii) For B decays, the π+π− and π0π0 rates are suppressed and enhanced respectively by FSI. (i...

متن کامل

Direct CP Violation in B Decays

We discuss several aspects of direct CP asymmetries in B decays, which are very useful in spite of hadronic uncertainties in asymmetry calculations. 1) Asymmetries in decays to D(∗)K(∗), π+π−, ρ+ρ−, providing precision tests for the CKM phase γ. 2) Null tests in B+ → J/ψK+, π+π0, where a nonzero asymmetry provides evidence for New Physics. 3) Isospin and broken flavor SU(3) relations among CP a...

متن کامل

Direct CP Violation in B → π+π−π Determination of α without discrete ambiguity

Direct CP violation in the hadronic decays B̄0 → π+π−π0 is investigated near the peak of the ρ0 taking into account the effect of ρ−ω mixing. Branching ratios for processes B±,0 → ρ±,0π±,0 and B → ωπ are calculated as well. We find that the CP violating asymmetry is strongly dependent on the CKM matrix elements. For a fixed N eff c , the CP violating asymmetry, aCP , has a maximum of order −40% ...

متن کامل

Effects of Final-state Interactions on Mixing-induced CP Violation in Penguin-dominated B Decays

Motivated by the recent indications of the possibility of sizable deviations of the mixinginduced CP violation parameter, Sf , in the penguin-dominated b → sqq̄ transition decays such as B0 → (φ, ω, ρ0, η, η, π0, f0)KS from sin 2β determined from B → J/ψKS , we study final-state rescattering effects on their decay rates and CP violation. Recent observations of large direct CP asymmetry in modes ...

متن کامل

The reaction 2 H ( γ , π 0 ) np in the threshold region

Neutral pion photoproduction on the deuteron in the inelastic channel is studied in the threshold region from 142 to 160 MeV. The calculation is based on the use of the diagrammatic approach. Contributions from the pole diagrams, one-loop diagrams both with n-p and π-N rescattering as well as two-loop diagrams with simultaneous inclusion of these rescattering mechanisms are taken into account. ...

متن کامل

ذخیره در منابع من


  با ذخیره ی این منبع در منابع من، دسترسی به آن را برای استفاده های بعدی آسان تر کنید

عنوان ژورنال:

دوره   شماره 

صفحات  -

تاریخ انتشار 1997