Structure of the Energy-Momentum Tensor and Applications
| Title: | Structure of the Energy-Momentum Tensor and Applications |
|---|---|
| Authors: | Hudson, Jonathan, Perevalova, Irina A., Polyakov, Maxim V., Schweitzer, Peter |
| Publication Year: | 2016 |
| Collection: | High Energy Physics - Experiment High Energy Physics - Phenomenology Nuclear Experiment Nuclear Theory |
| Subject Terms: | High Energy Physics - Phenomenology, High Energy Physics - Experiment, Nuclear Experiment, Nuclear Theory |
| More Details: | The probably most fundamental information about a particle is contained in the matrix elements of its energy momentum tensor (EMT) which are accessible from hard-exclusive reactions via generalized parton distribution functions. The spin decomposition of the nucleon and Ji sum rule are one example. Less prominent but equally important information is encoded in the stress tensor, related to the spatial components of the EMT, which shows in detail how the strong forces inside the nucleon balance to form a bound state. This provides not only unique insights on nucleon structure. It also leads to fascinating new applications to hadron spectroscopy which allow us to formulate new interpretations of the charmonium-nucleon pentaquarks discovered by LHCb. Recent progress is reviewed in this short overview article. Comment: 10 pages, 6 figures, based on talk presented at "QCD Evolution 2016", 30 May to 3 June 2016, Amsterdam |
| Document Type: | Working Paper |
| Access URL: | http://arxiv.org/abs/1612.06721 |
| Accession Number: | edsarx.1612.06721 |
| Database: | arXiv |
| Description not available. |