[aasimz (OP)]

I'm sure it will continue to be investigated. If structure is detected inside of quarks and leptons some day, it'll definitely be in the news.

Today's morning, I accidentally stumbled on some information which I wasn't going to find if it wasn't for this discussion, or maybe it wasn't there when I looked.

It is now confirmed that recent papers have been published on the matter, the most interesting part, is that they have a working model with math and experimental results for a sub-structure, the theoretical idea origin might be dating to 1997, but the actual paper to describe the model was as recent as 2009, and experimental observations were as recent as 2012.
Now I can finally rest in peace

The electron has no known substructure. Nevertheless, in condensed matter physics, spin–charge separation can occur in some materials. In such cases, electrons 'split' into three independent particles, the spinon, the orbiton and the holon (or chargon). The electron can always be theoretically considered as a bound state of the three, with the spinon carrying the spin of the electron, the orbiton carrying the orbital degree of freedom and the chargon carrying the charge, but in certain conditions they can behave as independent quasiparticles.

Wikipedia  |  Electron: Fundamental properties

Electrons, being of like charge, repel each other. As a result, in order to move past each other in an extremely crowded environment, they are forced to modify their behavior. Research published in July 2009 by the University of Cambridge and the University of Birmingham in England showed that electrons could jump from the surface of the metal onto a closely located quantum wire by quantum tunneling, and upon doing so, will separate into two quasiparticles, named spinons and holons by the researchers.

The orbiton was predicted theoretically by van den Brink, Khomskii and Sawatzky in 1997–1998. Its experimental observation as a separate quasiparticle was reported in paper sent to publishers in September 2011. The research states that by firing a beam of X-ray photons at a single electron in a one-dimensional sample of strontium cuprate, this will excite the electron to a higher orbital, causing the beam to lose a fraction of its energy in the process. In doing so, the electron will be separated into a spinon and an orbiton. This can be traced by observing the energy and momentum of the X-rays before and after the collision.

Wikipedia  |  Spinon: Overview

The model has a three fundamental particle system, which together explains all particle properties, wow, never crossed my mind, but I knew it was somehow possible.

Although, I will have to admit the model does not look like neither the atom's nor proton's sub-structure models. and they found it in a completely different area other than decays, it's the mysterious quantum tunnelling.

However, if anyone noticed the first paper published proposing the fundamentals of the model was partly from the same university behind this forum, how cool is that?

[evan_au]

in certain conditions (electrons) can behave as independent quasiparticles.

Those conditions include interactions with bulk matter, which consists of electrons, atomic nuclei and phonons, etc.
- These properties are not fundamental to an isolated electron, but are characteristics of the electron's interactions with bulk matter.

PS: I found a reference to the 2012 findings: https://www.nature.com/articles/nature.2012.10471
- Please provide a link to the recent paper that you cite (or a news article describing it - preferably in English)

[aasimz (OP)]

These properties are not fundamental to an isolated electron, but are characteristics of the electron's interactions with bulk matter.

I have noticed, but it doesn't matter to me as long as it's the same electron. (Please don't disturb the peace I finally found after so many long years)

However, they also said:

The electron can always be theoretically considered as a bound state of the three.

PS: I found a reference to the 2012 findings: https://www.nature.com/articles/nature.2012.10471
- Please provide a link to the recent paper that you cite (or a news article describing it - preferably in English)

References for both papers are in the links below:

April 2012 Paper
Spin-orbital separation in the quasi-one-dimensional Mott insulator Sr2CuO3

J. Schlappa, K. Wohlfeld, K. J. Zhou, M. Mourigal, M. W. Haverkort, V. N. Strocov, L. Hozoi, C. Monney, S. Nishimoto, S. Singh, A. Revcolevschi, J.-S. Caux, L. Patthey, H. M. Rønnow, J. van den Brink, T. Schmitt

arxiv.org   |   arxiv.org English PDF

Harvard

Nature I Original Paper
Nature | Article: Not-quite-so elementary, my dear electron
I loved the article title.

Pubmed.gov

Semantic Scholar

July 2009 Paper / The one that "The University of Cambridge" has participated in:
Probing Spin-Charge Separation in a Tomonaga-Luttinger Liquid

Y. Jompol (1), C. J. B. Ford (1), J. P. Griffiths (1), I. Farrer (1), G. A. C. Jones (1), D. Anderson (1), D. A. Ritchie (1), T. W. Silk (2), A. J. Schofield (2) ((1) Cambridge, UK, (2) Birmingham, UK)

arxiv.org   |   Arxiv.org English PDF

Harvard

Science.org  I Original Paper

Pubmed.gov

Semantic Scholar