scholarly journals Weak interaction effects in low energy pion photoproduction

1979 ◽  
Vol 57 (6) ◽  
pp. 809-814 ◽  
Author(s):  
R. M. Woloshyn
Keyword(s):  
Weak Interaction ◽  
Neutral Current ◽  
Interaction Effects ◽  
Pion Photoproduction ◽  
Low Energy ◽  
Weak Neutral Current ◽  
Pion Nucleon

Weak interaction induced parity-violating asymmetries in low energy pion photoproduction are calculated to be of order 10−7. The problem of isolating the weak neutral current dominated pion–nucleon coupling is discussed.

PION PHOTOPRODUCTION IN A GAUGE-INVARIANT CHIRAL UNITARY FRAMEWORK

2014 ◽  
Vol 26 ◽  
pp. 1460075
Author(s):  
MAXIM MAI ◽  
PETER C. BRUNS ◽  
ULF-G. MEIßNER
Keyword(s):  
Magnetic Moments ◽  
Pion Photoproduction ◽  
Low Energy ◽  
Leading Order ◽  
S Wave ◽  
Gauge Invariant ◽  
Unitary Extension ◽  
Pion Nucleon ◽  
Energy Constants ◽  
Order Contact

We investigate pion photoproduction off the proton in a manifestly gauge-invariant chiral unitary extension of chiral perturbation theory. In a first step, we consider meson-baryon scattering taking into account all next-to-leading order contact interactions. The resulting low-energy constants are determined by a fit to s-wave pion-nucleon scattering and the low-energy data for the reaction π-p → ηn. Having determined the low-energy constants, we then analyse the data on the s-wave multipole amplitudes E0+ of pion and eta photoproduction. These are parameter-free predictions, as the two new low-energy constants are determined by the neutron and proton magnetic moments.

Observation of Single-Pion Production by a Weak Neutral Current

1974 ◽  
Vol 33 (7) ◽  
pp. 448-451 ◽  
Author(s):  
S. J. Barish ◽  
Y. Cho ◽  
M. Derrick ◽  
L. G. Hyman ◽  
J. Rest ◽  
...  
Keyword(s):  
Pion Production ◽  
Neutral Current ◽  
Weak Neutral Current

scholarly journals Extracting the σ-term from low-energy pion-nucleon scattering

2017 ◽  
Vol 45 (2) ◽  
pp. 024001 ◽  
Author(s):  
Jacobo Ruiz de Elvira ◽  
Martin Hoferichter ◽  
Bastian Kubis ◽  
Ulf-G Meißner
Keyword(s):  
Low Energy ◽  
Nucleon Scattering ◽  
Pion Nucleon

Weak-interaction effects in heavy atomic systems

1985 ◽  
Vol 32 (4) ◽  
pp. 2093-2099 ◽  
Author(s):  
W. R. Johnson ◽  
D. S. Guo ◽  
M. Idrees ◽  
J. Sapirstein
Keyword(s):  
Weak Interaction ◽  
Interaction Effects ◽  
Atomic Systems

Study of the isoscalar weak neutral current by electron scattering from polarized deuterium

1992 ◽  
Vol 45 (4) ◽  
pp. 1939-1954 ◽  
Author(s):  
Toshio Suzuki
Keyword(s):  
Electron Scattering ◽  
Neutral Current ◽  
Weak Neutral Current

Ward-identity techniques and low-energy pion-nucleon scattering

1970 ◽  
Vol 21 (2) ◽  
pp. 615-658 ◽  
Author(s):  
Edward T Osypowski
Keyword(s):  
Ward Identity ◽  
Low Energy ◽  
Nucleon Scattering ◽  
Pion Nucleon

Coherent effects of a weak neutral current

1974 ◽  
Vol 9 (5) ◽  
pp. 1389-1392 ◽  
Author(s):  
Daniel Z. Freedman
Keyword(s):  
Neutral Current ◽  
Weak Neutral Current ◽  
Coherent Effects

scholarly journals Low-energy expansion of the pion-nucleon Lagrangian

1996 ◽  
Vol 365 (1-4) ◽  
pp. 312-318 ◽  
Author(s):  
G. Ecker ◽  
M. Mojžiš
Keyword(s):  
Low Energy ◽  
Pion Nucleon ◽  
Energy Expansion

Low energy expansions for double-pion photoproduction

1994 ◽  
Vol 73 (3) ◽  
pp. 400-403 ◽  
Author(s):  
M. Benmerrouche ◽  
E. Tomusiak
Keyword(s):  
Pion Photoproduction ◽  
Low Energy ◽  
Double Pion

Tests for a Weak Neutral Current inl±+N→l±+Anythingat High Energy

1973 ◽  
Vol 7 (9) ◽  
pp. 2755-2775 ◽  
Author(s):  
Emanuel Derman
Keyword(s):  
Neutral Current ◽  
High Energy ◽  
Weak Neutral Current
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