The origin of the nucleon mass - Archive ouverte HAL
Communication Dans Un Congrès Année : 2020

The origin of the nucleon mass

Cédric Lorcé

Résumé

It is often claimed that 98% of the nucleon mass is generated by quantum chromodynamics. The decomposition of the nucleon mass based on the trace of the energy-momentum tensor suggests that gluons play by far a dominant role. About 25 years ago, Ji proposed another decomposition based on the energy component of the energy-momentum tensor, leading to a quite different picture. Recently, we critically revisited these decompositions and argued that both overlooked pressure effects. In particular we showed that Ji’s decomposition, although mathematically correct, makes little sense from a physical point of view. We identify the proper mass decomposition along with a balance equation for the pressure forces.

Dates et versions

hal-01937669 , version 1 (28-11-2018)

Identifiants

Citer

Cédric Lorcé. The origin of the nucleon mass. 22nd International Conference on Few-Body Problems in Physics, Jul 2018, Caen, France. pp.635-641, ⟨10.1007/978-3-030-32357-8_100⟩. ⟨hal-01937669⟩
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