Review of current algebra results in the weak decays of the metastable hadrons

1969 ◽  
Vol 26 (1-2) ◽  
pp. 191-199 ◽  
Author(s):  
Z. Kunszt ◽  
T. Nagy
Keyword(s):  
Current Algebra ◽  
Weak Decays

COMPARING WEAK DECAYS K→2π AND D→2π

1996 ◽  
Vol 11 (35) ◽  
pp. 2743-2753 ◽  
Author(s):  
M.D. SCADRON
Keyword(s):  
Current Algebra ◽  
Weak Decays

We show that ΔI=3/2 transitions for quark W-emission K2π diagrams and independently the current algebra-PCAC consistency scheme for all three K2π amplitudes are extremely accurate, within 3% of the data. Although the same analysis applied to D2π decays roughly approximates recent experiments, the agreement is only valid to within 25%–40% of the data.

CABIBBO ANGLE-ENHANCED AND DOUBLY SUPPRESSED D→Kπ WEAK DECAYS AND PCAC

1995 ◽  
Vol 10 (36) ◽  
pp. 2733-2738
Author(s):  
M.D. SCADRON
Keyword(s):  
Current Algebra ◽  
Branching Ratio ◽  
Cabibbo Angle ◽  
Weak Decays

The observed branching ratio of D°→K+π− to K−π+ is obtained using current algebra-PCAC consistency. The latter approach also sets the scale for the three Cabibbo angle-enhanced [Formula: see text] decays in a manner compatible with data.

Current algebra and nonleptonic weak decays of charmed baryons

1985 ◽  
Vol 88 (2) ◽  
pp. 213-224 ◽  
Author(s):  
F. Hussain ◽  
K. Khan
Keyword(s):  
Current Algebra ◽  
Charmed Baryons ◽  
Weak Decays

Why current algebra and PCAC are applicable for charmed-meson and -baryon weak decays

1991 ◽  
Vol 43 (5) ◽  
pp. 1739-1741 ◽  
Author(s):  
R. E. Karlsen ◽  
M. D. Scadron
Keyword(s):  
Current Algebra ◽  
Charmed Meson ◽  
Weak Decays

CHIRAL LAGRANGIANS, CURRENT ALGEBRA AND KAON WEAK DECAYS

1995 ◽  
Vol 10 (17) ◽  
pp. 1247-1255 ◽  
Author(s):  
R.E. KARLSEN ◽  
M.D. SCADRON
Keyword(s):  
Matrix Element ◽  
Chiral Lagrangians ◽  
Current Algebra ◽  
Axial Current ◽  
Complete Agreement ◽  
Weak Decays ◽  
Element Ratios ◽  
Chiral Lagrangian

We show that the weak chiral Lagrangian of Cronin predicts the weak matrix element ratios of K→3π, 2π, π to K→2π, π, vac respectively, which are in complete agreement with the standard current algebra (CA)-partially conserved axial current (PCAC) techniques. Both approaches are in fact compatible with data.

scholarly journals Doubly Cabibbo-suppressed decays of antitriplet charmed baryons

2020 ◽  
Vol 2020 (11) ◽  
Author(s):  
Guanbao Meng ◽  
Sam Ming-Yin Wong ◽  
Fanrong Xu
Keyword(s):  
Current Algebra ◽  
Branching Fractions ◽  
Final States ◽  
Pole Model ◽  
Bag Model ◽  
Charmed Baryons ◽  
Weak Decays ◽  
Mit Bag Model ◽  
Cabibbo Suppressed ◽  
Diagram Approach

Abstract Doubly Cabibbo-suppressed (DCS) nonleptonic weak decays of antitriplet charmed baryons are studied systematically in this work. The factorizable and nonfactorizable contributions can be classified explicitly in the topological-diagram approach and treated separately. In particular, the evaluation of nonfactorizable terms is based on the pole model in conjunction with current algebra. All three types of relevant non- perturbative parameters contributing factorizable and nonfactorizable terms are estimated in the MIT bag model. Branching fractions of all the DCS decays are predicted to be of order 10−4 ∼ 10−6. In particular, we find that the three modes $$ {\Xi}_c^{+}\to {\Sigma}^{+}{K}^0,{\Sigma}^0{K}^{+} $$ Ξ c + → Σ + K 0 , Σ 0 K + and $$ {\Xi}_c^0\to {\Sigma}^{-}{K}^{+} $$ Ξ c 0 → Σ − K + are as large as (1 ∼ 2) × 10−4, which are the most promising DCS channels to be measured. We also point out that the two DCS modes $$ {\Xi}_c^{+}\to {\Sigma}^{+}{K}^0 $$ Ξ c + → Σ + K 0 and $$ {\Xi}_c^0\to {\Sigma}^0{K}^0 $$ Ξ c 0 → Σ 0 K 0 are possible to be distinguished from $$ {\Xi}_c^{+}\to {\Sigma}^{+}{K}_S $$ Ξ c + → Σ + K S and $$ {\Xi}_c^0\to {\Sigma}^0{K}_S $$ Ξ c 0 → Σ 0 K S . The decay asymmetries for all the channels with a kaon in their final states are found to be large in magnitude and negative in sign.

Sign in / Sign up

Export Citation Format

Share Document