scholarly journals NN interaction from chiral effective field theory and its application to neutron-antineutron oscillations

2022 ◽  
Vol 258 ◽  
pp. 06002
Author(s):  
Johann Haidenbauer ◽  
Ulf-G. Meißner
Keyword(s):  
Field Theory ◽  
Phase Shift ◽  
Effective Field Theory ◽  
Free Space ◽  
Phase Shifts ◽  
Effective Field ◽  
Phase Shift Analysis ◽  
Scattering Data ◽  
Chiral Effective Field Theory ◽  
Shift Analysis

An N¯N potential is introduced which is derived within chiral effective field theory and fitted to up-to-date N¯N phase shifts and inelasticities, provided by a proper phase-shift analysis of available p¯p scattering data. As an application of this interaction neutron-antineutron oscillations in the deuteron are considered. In particular, results for the deuteron lifetime are presented, evaluated in terms of the free-space n−n¯ oscillation time, utilizing that N¯N potential together with an NN interaction likewise derived within chiral effective field theory.

scholarly journals THE ROLE OF THE Δ(1232)-RESONANCE IN COVARIANT BARYON CHIRAL PERTURBATION THEORY

2014 ◽  
Vol 26 ◽  
pp. 1460088
Author(s):  
J. M. ALARCÓN
Keyword(s):  
Field Theory ◽  
Perturbation Theory ◽  
Effective Field Theory ◽  
Effective Field ◽  
Scattering Data ◽  
Theory Approach ◽  
Chiral Perturbation ◽  
Chiral Effective Field Theory ◽  
Dynamical Degree

We stress, on theoretical and phenomenological grounds, the importance of the Δ(1232)-resonance in a chiral effective field theory approach to the study of πN scattering. We show how its inclusion as a dynamical degree of freedom allow us to obtain reliably valuable information from πN scattering data.

scholarly journals Spin effects in the effective field theory approach to Post-Minkowskian conservative dynamics

2021 ◽  
Vol 2021 (6) ◽  
Author(s):  
Zhengwen Liu ◽  
Rafael A. Porto ◽  
Zixin Yang
Keyword(s):  
Field Theory ◽  
Effective Field Theory ◽  
Scattering Problem ◽  
Finite Size ◽  
Effective Field ◽  
Compact Objects ◽  
Scattering Data ◽  
Theory Approach ◽  
Spin Effects ◽  
Radial Action

Abstract Building upon the worldline effective field theory (EFT) formalism for spinning bodies developed for the Post-Newtonian regime, we generalize the EFT approach to Post-Minkowskian (PM) dynamics to include rotational degrees of freedom in a manifestly covariant framework. We introduce a systematic procedure to compute the total change in momentum and spin in the gravitational scattering of compact objects. For the special case of spins aligned with the orbital angular momentum, we show how to construct the radial action for elliptic-like orbits using the Boundary-to-Bound correspondence. As a paradigmatic example, we solve the scattering problem to next-to-leading PM order with linear and bilinear spin effects and arbitrary initial conditions, incorporating for the first time finite-size corrections. We obtain the aligned-spin radial action from the resulting scattering data, and derive the periastron advance and binding energy for circular orbits. We also provide the (square of the) center-of-mass momentum to $$ \mathcal{O}\left({G}^2\right) $$ O G 2 , which may be used to reconstruct a Hamiltonian. Our results are in perfect agreement with the existent literature, while at the same time extend the knowledge of the PM dynamics of compact binaries at quadratic order in spins.

scholarly journals Hyperon–nucleon interaction at next-to-leading order in chiral effective field theory

2013 ◽  
Vol 915 ◽  
pp. 24-58 ◽  
Author(s):  
J. Haidenbauer ◽  
S. Petschauer ◽  
N. Kaiser ◽  
U.-G. Meißner ◽  
A. Nogga ◽  
...  
Keyword(s):  
Field Theory ◽  
Effective Field Theory ◽  
Effective Field ◽  
Leading Order ◽  
Nucleon Interaction ◽  
Chiral Effective Field Theory

scholarly journals Neutron-proton scattering with lattice chiral effective field theory at next-to-next-to-next-to-leading order

2018 ◽  
Vol 98 (4) ◽  
Author(s):  
Ning Li ◽  
Serdar Elhatisari ◽  
Evgeny Epelbaum ◽  
Dean Lee ◽  
Bing-Nan Lu ◽  
...  
Keyword(s):  
Field Theory ◽  
Effective Field Theory ◽  
Effective Field ◽  
Proton Scattering ◽  
Leading Order ◽  
Chiral Effective Field Theory

scholarly journals Hyperons in nuclear matter from SU(3) chiral effective field theory

2016 ◽  
Vol 52 (1) ◽  
Author(s):  
S. Petschauer ◽  
J. Haidenbauer ◽  
N. Kaiser ◽  
Ulf-G. Meißner ◽  
W. Weise
Keyword(s):  
Field Theory ◽  
Nuclear Matter ◽  
Effective Field Theory ◽  
Effective Field ◽  
Chiral Effective Field Theory
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