Nucleon cosmological constant term and flavor structure of the gravitational form factors
Abstract
The gravitational form factors furnish information on the mechanics of the nucleon. It is essential to compute the generalized isovectorvector form factors to examine the flavor structure of the gravitational form factors. The flavordecomposed form factors reveal the internal structure of the nucleon. The up quark dominates over the down quark for the mass and spin of the nucleon, whereas the down quark takes over the up quark for the $D$term form factor. We investigate for the first time the isovector cosmological constant term of the nucleon and its physical implications. The flavordecomposed cosmological constant terms of the nucleon unveil how the upquark contribution is exactly canceled by the downquark contribution inside a nucleon within the framework of the pion meanfield approach. While the nucleon cosmological constant term does not contribute to the nucleon mass, its flavor structure sheds light on how the strong force fields due to the cosmological constant term characterize the stability of the nucleon.
 Publication:

arXiv eprints
 Pub Date:
 February 2023
 DOI:
 10.48550/arXiv.2302.02974
 arXiv:
 arXiv:2302.02974
 Bibcode:
 2023arXiv230202974W
 Keywords:

 High Energy Physics  Phenomenology;
 High Energy Physics  Experiment;
 High Energy Physics  Lattice
 EPrint:
 6 pages and 4 figures