/ 97 02 31 6 v 1 1 2 Fe b 19 97 τ → η ( η ′ ) 2 πν , 3 πν and WZW anomaly

نویسنده

  • Bing An Li
چکیده

The effects of the anomalous contact terms L η(η ′)ρππ are taken into account in calculating the decay rates of τ → η(η ′)ππν. The branching ratio of τ → ηπππν is calculated. Theoretical result agrees with the data. It is the first time that the anomalous Wess-Zumino-Witten vertex ηaa is tested. A a 1 resonance is predicted in the final state of the three pions. The prediction of the branching ratio of τ → η ′ πππν is presented.

برای دانلود 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

Strong Law of Large Numbers and Mixing for the Invariant Distributions of Measure-valued Diffusions

Let M(Rd) denote the space of locally finite measures on Rd and let M1(M(Rd)) denote the space of probability measures on M(Rd). Define the mean measure πν of ν ∈M1(M(Rd)) by πν(B) = ∫ M(Rd) η(B)dν(η), for B ⊂ R. For such a measure ν with locally finite mean measure πν , let f be a nonnegative, locally bounded test function satisfying < f, πν >= ∞. ν is said to satisfy the strong law of large n...

متن کامل

Roles of proton-neutron interactions in alpha-like four-nucleon correlations

An extended pairing plus QQ force model, which has been shown to successfully explain the nuclear binding energy and related quantities such as the symmetry energy, is applied to study the alpha-like four-nucleon correlations in 1f7/2 shell nuclei. The double difference of binding energies, which displays a characteristic behavior at N ≈ Z, is interpreted in terms of the alpha-like correlations...

متن کامل

ar X iv : h ep - p h / 04 02 29 3 v 1 2 7 Fe b 20 04 η , η ′ photoproduction and electroproduction off protons

Photo-and electroproduction of η, η ′ mesons on protons are investigated within a relativistic chiral unitary approach based on coupled channels. The s wave potentials for electroproduction and meson-baryon scattering are derived from a chiral effective Lagrangian which includes the η ′ as an explicit degree of freedom and incorporates important features of the underlying QCD Lagrangian such as...

متن کامل

Nonexistence of Homoclinic Solutions for a Class of Discrete Hamiltonian Systems

and Applied Analysis 3 From (A0), (17), (19), (20), and the first equation of system (6), we have x (n+1) = n ∑ τ=−∞ β (τ) 󵄨󵄨󵄨󵄨y (τ) 󵄨󵄨󵄨󵄨 μ−2 y (τ) n ∏ s=τ [1−α (s)] −1 , ∀n∈Z, (21) x (n+1) =− +∞ ∑ τ=n+1 β (τ) 󵄨󵄨󵄨󵄨y (τ) 󵄨󵄨󵄨󵄨 μ−2 y (τ) τ−1 ∏ s=n+1 [1−α (s)] , ∀n∈Z. (22) Combining (19) with (21), one has |x (n + 1)| ν = 󵄨󵄨󵄨󵄨󵄨󵄨󵄨 n ∑ τ=−∞ β (τ) 󵄨󵄨󵄨󵄨y (τ) 󵄨󵄨󵄨󵄨 μ−2 y (τ) n ∏ s=τ [1 − α (s)] −1 󵄨󵄨󵄨󵄨󵄨󵄨...

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

برای دانلود 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

عنوان ژورنال:

دوره   شماره 

صفحات  -

تاریخ انتشار 1997