scholarly journals On the Violation of the Full Symmetry in Leptonic Decays of Baryons and Mesons

1963 ◽  
Vol 30 (4) ◽  
pp. 536-544
Author(s):  
Mineo Ikeda ◽  
Takayoshi Maekawa
Keyword(s):  
Leptonic Decays ◽  
Full Symmetry ◽  
Decays Of Baryons

scholarly journals Exchange Current and Leptonic Decays of Baryons in the Quark Model

1968 ◽  
Vol 40 (2) ◽  
pp. 339-352
Author(s):  
Tsunehiro Kobayashi ◽  
Kimiaki Konno
Keyword(s):  
Quark Model ◽  
Exchange Current ◽  
Leptonic Decays ◽  
Decays Of Baryons

On QCD and valence-quark approximation for non-leptonic decays of baryons

1980 ◽  
Vol 172 ◽  
pp. 534-542 ◽  
Author(s):  
J.L. Cortés ◽  
J. Sánchez Guillén
Keyword(s):  
Valence Quark ◽  
Leptonic Decays ◽  
Decays Of Baryons

Leptonic decays of baryons

1968 ◽  
Vol 212 (2) ◽  
pp. 190-212 ◽  
Author(s):  
I. Bender ◽  
V. Linke ◽  
H. J. Rothe
Keyword(s):  
Leptonic Decays ◽  
Decays Of Baryons

The radiative corrections to the semi-leptonic decays of baryons

1981 ◽  
Vol 66 (4) ◽  
pp. 399-410 ◽  
Author(s):  
A. Baltas ◽  
K. Gavroglou ◽  
D. Photinos
Keyword(s):  
Radiative Corrections ◽  
Leptonic Decays ◽  
Decays Of Baryons

scholarly journals Semi-Leptonic Decays of Baryons in the Cloudy Bag Model

1985 ◽  
Vol 73 (5) ◽  
pp. 1278-1282 ◽  
Author(s):  
Y. Kohyama ◽  
K. Oikawa ◽  
C. W. Kim ◽  
K. Kubodera
Keyword(s):  
Bag Model ◽  
Leptonic Decays ◽  
Decays Of Baryons

scholarly journals A Dynamical Approach to the Leptonic Decays of Baryons

1966 ◽  
Vol 35 (5) ◽  
pp. 908-913
Author(s):  
Akira Kanazawa ◽  
Tetsuro Sakuma
Keyword(s):  
Leptonic Decays ◽  
Dynamical Approach ◽  
Decays Of Baryons

scholarly journals Contribution of the Darwin operator to non-leptonic decays of heavy quarks

2020 ◽  
Vol 2020 (12) ◽  
Author(s):  
Alexander Lenz ◽  
Maria Laura Piscopo ◽  
Aleksey V. Rusov
Keyword(s):  
Standard Technique ◽  
Quark Propagator ◽  
Leptonic Decay ◽  
Leptonic Decays ◽  
Interference Contribution ◽  
The Standard Model ◽  
Strength Tensor ◽  
Quark Flavour ◽  
Quark Decay ◽  
B Quark

Abstract We compute the Darwin operator contribution ($$ 1/{m}_b^3 $$ 1 / m b 3 correction) to the width of the inclusive non-leptonic decay of a B meson (B+, Bd or Bs), stemming from the quark flavour-changing transition b → $$ {q}_1{\overline{q}}_2{q}_3 $$ q 1 q ¯ 2 q 3 , where q1, q2 = u, c and q3 = d, s. The key ideas of the computation are the local expansion of the quark propagator in the external gluon field including terms with a covariant derivative of the gluon field strength tensor and the standard technique of the Heavy Quark Expansion (HQE). We confirm the previously known expressions of the $$ 1/{m}_b^3 $$ 1 / m b 3 contributions to the semi-leptonic decay b → $$ {q}_1\mathrm{\ell}{\overline{\nu}}_{\mathrm{\ell}} $$ q 1 ℓ ν ¯ ℓ , with ℓ = e, μ, τ and of the $$ 1/{m}_b^2 $$ 1 / m b 2 contributions to the non-leptonic modes. We find that this new term can give a sizeable correction of about −4 % to the non-leptonic decay width of a B meson. For Bd and Bs mesons this turns out to be the dominant correction to the free b-quark decay, while for the B+ meson the Darwin term gives the second most important correction — roughly 1/2 to 1/3 of the phase space enhanced Pauli interference contribution. Due to the tiny experimental uncertainties in lifetime measurements the incorporation of the Darwin term contribution is crucial for precision tests of the Standard Model.

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