A New Structure in the Deuteron

Abstract

We demonstrate that a paradigm shift from considering the deuteron as a system of bound proton and neutron to considering it as a pseudo-vector system in which we observe proton and neutron, results in a possibility of probing a new "incomplete" P-state like structure on the light-front (LF), at extremely large internal momenta, which can be achieved in high energy transfer electro-disintegration of the deuteron. Investigating the deuteron on the light-front, where the vacuum-fluctuations are suppressed, we found that this new structure, together with conventional S- and D- states, is a leading order in transferred energy of the reaction, thus it is not suppressed on the light-front.The incompleteness of the observed P-state results in a violation of angular condition which can happen only if deuteron contains non-nucleonic structures such as $\Delta$$\Delta$, $N^{\ast }N$ or hidden color components. We demonstrate that experimentally verifiable signatures of "incomplete" P-states are angular anisotropy of LF momentum distribution of the nucleon in the deuteron as well as an enhancement of the tensor polarization strength beyond the S- and D- wave predictions at large internal momenta in the deuteron.

Five pages and two figures

References in corpus (6)

• Refined Mass and Geometric Measurements of the High-Mass PSR J0740+6620
• Short Range Correlations and the EMC Effect
• Modified Structure of Protons and Neutrons in Correlated Pairs
• The Radius of PSR J0740+6620 from NICER and XMM-Newton Data
• Modern Studies of the Deuteron: from the Lab Frame to the Light Front
• Probing the Deuteron at Very Large Internal Momenta

Cited by in corpus (3)

• Strong Interaction Physics at the Luminosity Frontier with 22 GeV Electrons at Jefferson Lab
• Semi-inclusive deep inelastic scattering off a tensor-polarized spin-1 target
• Twist-3 contribution in the Drell-Yan process with tensor-polarized deuteron