scholarly journals Charge-symmetry breaking {Lambda}-nucleon interaction

1995 ◽  
Author(s):  
A R Bodmer ◽  
M Murali ◽  
Q N Usmani
Keyword(s):  
Symmetry Breaking ◽  
Nucleon Interaction ◽  
Charge Symmetry Breaking ◽  
Charge Symmetry

Light quark mass differences and charge symmetry breaking in hyperon-nucleon interaction

1980 ◽  
Vol 97 (2) ◽  
pp. 305-309 ◽  
Author(s):  
S.N. Biswas ◽  
R.S. Choudhury ◽  
Ashok Goyal ◽  
J.N. Passi
Keyword(s):  
Symmetry Breaking ◽  
Quark Mass ◽  
Light Quark ◽  
Nucleon Interaction ◽  
Charge Symmetry Breaking ◽  
Charge Symmetry ◽  
Light Quark Mass

scholarly journals Constraints on the $$\varLambda $$-Neutron Interaction from Charge Symmetry Breaking in the $$\mathbf {^4_\Lambda \mathrm{He}}$$ - $$\mathbf {^4_\Lambda \mathrm{H}}$$ Hypernuclei

2021 ◽  
Vol 62 (4) ◽  
Author(s):  
Johann Haidenbauer ◽  
Ulf-G. Meißner ◽  
Andreas Nogga
Keyword(s):  
Symmetry Breaking ◽  
Effective Field ◽  
Scattering Data ◽  
Leading Order ◽  
Nucleon Interaction ◽  
Charge Symmetry Breaking ◽  
Chiral Effective Field Theory ◽  
Charge Symmetry ◽  
Neutron Interaction ◽  
Scattering Lengths

AbstractWe utilize the experimentally known difference of the $$\varLambda $$ Λ separation energies of the mirror hypernuclei $${^4_\varLambda \mathrm{He}}$$ Λ 4 He and $${^4_\varLambda \mathrm{H}}$$ Λ 4 H to constrain the $$\varLambda $$ Λ -neutron interaction. We include the leading charge-symmetry breaking (CSB) interaction into our hyperon-nucleon interaction derived within chiral effective field theory at next-to-leading order. In particular, we determine the strength of the two arising CSB contact terms by a fit to the differences of the separation energies of these hypernuclei in the $$0^+$$ 0 + and $$1^+$$ 1 + states, respectively. By construction, the resulting interaction describes all low energy hyperon-nucleon scattering data, the hypertriton and the CSB in $${^4_\varLambda \mathrm{He}}$$ Λ 4 He -$${^4_\varLambda \mathrm{H}}$$ Λ 4 H accurately. This allows us to provide first predictions for the $$\varLambda $$ Λ n scattering lengths, based solely on available hypernuclear data.

Nucleon interaction with 12C studied by the soft-rotator model and a limit on the charge-symmetry breaking in the nuclear mean field

1998 ◽  
Vol 640 (2) ◽  
pp. 147-162 ◽  
Author(s):  
Efrem Sh. Sukhovitskiĩ ◽  
Satoshi Chiba ◽  
Osamu Iwamoto ◽  
Yurij V. Porodzinskiĩ
Keyword(s):  
Symmetry Breaking ◽  
Mean Field ◽  
Nucleon Interaction ◽  
Charge Symmetry Breaking ◽  
Charge Symmetry ◽  
Rotator Model

SUBSTRUCTURE EFFECT ON ρ-ω MIXING IN CHARGE-SYMMETRY VIOLATION

1992 ◽  
Vol 07 (32) ◽  
pp. 3037-3043 ◽  
Author(s):  
T. GOLDMAN ◽  
J.A. HENDERSON ◽  
A.W. THOMAS
Keyword(s):  
Symmetry Breaking ◽  
Quark Model ◽  
Quark Mass ◽  
Mass Shell ◽  
Mass Difference ◽  
Charge Symmetry Breaking ◽  
Symmetry Violation ◽  
Charge Symmetry ◽  
A Charge ◽  
Simple Quark Model

In generating a charge-symmetry breaking potential using ρ-ω mixing it is usually assumed that the mixing amplitude is constant (at the on-mass-shell value). Since the exchanged meson is actually far off-shell one must question the validity of this assumption. By constructing a simple quark model in which the mixing is generated by the u-d quark mass difference, we find that the assumption seems to be a very poor one.

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