2004/11/30 by Deepshikha Choudhury, Daniel R. Phillips · 1 citation
Physics and Astronomy · #Asymmetry #Compton scattering #Neutron #Nuclear physics #Nuclear physics research studies #Observable #Particle physics #Particle physics theoretical and experimental studies #Photon #Physics #Polarization (electrochemistry) #Quantum Chromodynamics and Particle Interactions #Quantum mechanics #Scattering #nucl-ex #nucl-th
paper · pdf · doi:10.1103/physrevc.71.044002
published as Phys.Rev.C71:044002,2005 · 26 pages, 13 figures, revised version to be published in PRC
arxiv created 2005/02/25 · openalex publication_date 2005/04/29 · arxiv updated 2009/12/01 · openalex created_date 2016/06/24 · openalex updated_date 2026/08/05
Motivated by ongoing developments at High-Intensity Gamma Source (HI\ensuremathγS) at Triangle Universities Nuclear Laboratory (TUNL) that include increased photon flux and the ability to circularly polarize photons, we calculate several beam-polarization and/or target-spin-dependent observables for elastic Compton scattering on the deuteron. This is done at energies of the order of the pion mass within the framework of heavy-baryon chiral perturbation theory. Our calculation is complete to O(Q3) and at this order there are no free parameters. Consequently, the results reported here are predictions of the theory. We discuss paths that may lead to the extraction of neutron polarizabilities. We find that the photon/beam polarization asymmetry is not a good observable for the purpose of extracting \ensuremathαn and \ensuremathβn. However, one of the double polarization asymmetries, \ensuremathΣx, shows appreciable sensitivity to \ensuremathγ1n and could be instrumental in pinning down the neutron spin polarizabilities.