Transverse Asymmetry in Nucleon Deuteron Scattering in Pionless Effective Field Theory

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2017

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In this dissertation we applied the pionless effective field theory (EFTπ{ ) to low energy neu- tron deuteron elastic scattering process. We calculated some of the polarization observables in neutron deuteron scattering to next-to-next-to-next-to-leading-order, in particular the transverse asymmetry Ay. All of the previous calculations have the same characteristic fea- ture of under-predicting this observable, this is known as the Ay-puzzle. At this order of the EFTπ{ new two-body P-wave interaction terms enter into the Lagrangian. This interaction terms give crucial contributions to the Ay observable. By varying the interaction coefficients within the allowed error estimates of the EFTπ{ we find results that at this order are consis- tent with the experimental data. Our conclusion is that the Ay-puzzle is likely to be solved within the next few orders of the EFTπ{ . Other observables in neutron-deuteron scattering process are also calculated and are with a good agreement with the experimental data.

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Margaryan, Arman (2017). Transverse Asymmetry in Nucleon Deuteron Scattering in Pionless Effective Field Theory. Dissertation, Duke University. Retrieved from https://hdl.handle.net/10161/16273.

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