Charge Symmetry Breaking in the n p --> d pi^0 reaction

Abstract

The asymmetry in the angular distribution of n p --> d pi^0 due to Charge Symmetry Breaking is calculated using Heavy Baryon Chiral Perturbation Theory. Recent developments in power counting have proven successful in describing total cross sections, and we apply them to the asymmetry calculation. Reducibility in one of the leading order diagrams is examined. We compare the updated theory with experimental results for a range of physically reasonable parameters and find over-prediction for the entire range.

29 pages, 14 figures; content added

References in corpus (3)

• Charge Symmetry Breaking and QCD
• Extraction of the strong neutron-proton mass difference from the charge symmetry breaking in pn-->d pi0
• p-Wave pion production from nucleon-nucleon collisions

Cited by in corpus (15)

• Electric Dipole Moments of Light Nuclei From Chiral Effective Field Theory
• The Effective Chiral Lagrangian From the Theta Term
• The Electric Dipole Form Factor of the Nucleon in Chiral Perturbation Theory to Sub-leading Order
• The Time-Reversal- and Parity-Violating Nuclear Potential in Chiral Effective Theory
• Extraction of the strong neutron-proton mass difference from the charge symmetry breaking in pn-->d pi0
• Towards a high precision calculation for the pion-nucleus scattering lengths
• Effective Field Theory calculations of $NN\to NN\pi$
• Pion production in nucleon-nucleon collisions in chiral effective field theory with Delta(1232)-degrees of freedom
• Charge Symmetry Breaking in dd->4Heπ0 with WASA-at-COSY
• Threshold pion production in proton-proton collisions at NNLO in chiral EFT
• Chiral perturbation theory calculation for pn -> dpipi at threshold
• Impulse approximation in nuclear pion production reactions: absence of a one-body operator
• Impulse approximation in the n p --> d pi^0 reaction reexamined
• Pion absorption from the lowest atomic orbital in 2H, 3H and 3He
• Charge Symmetry Breaking and Nuclear Pion Production Reactions