Chargino

In particle physics, the chargino is a hypothetical particle which refers to the mass eigenstates of a charged superpartner, i.e. any new electrically charged fermion (with spin 1/2) predicted by supersymmetry.^[1][2] They are linear combinations of the charged wino and charged higgsinos. There are two charginos that are fermions and are electrically charged, which are typically labeled
C͂^±
₁ (the lightest) and
C͂^±
₂ (the heaviest), although sometimes ${\displaystyle {\tilde {\chi }}_{1}^{\pm }}$ and ${\displaystyle {\tilde {\chi }}_{2}^{\pm }}$ are also used to refer to charginos, when ${\displaystyle {\tilde {\chi }}_{i}^{0}}$ is used to refer to neutralinos. The heavier chargino can decay through the neutral Z boson to the lighter chargino. Both can decay through a charged W boson to a neutralino:

C͂^±
₂ →
C͂^±
₁ +
Z⁰

C͂^±
₂ →
N͂⁰
₂ +
W^±

C͂^±
₁ →
N͂⁰
₁ +
W^±

See also

• List of hypothetical particles
• Weakly interacting slender particle

References

1. Klapdor-Kleingrothaus, H. V.; Krivosheina, I. V. (1999). Lepton and Baryon Number Violation in Particle Physics, Astrophysics and Cosmology: Proceedings of the First International Symposium on Lepton and Baryon Number Violation (Lepton-Baryon 98), European Centre for Theoretical Studies (ECT), Trento, Italy, 2. CRC Press. p. 469. ISBN 978-1-4822-6863-8. Retrieved 19 June 2020.
2. Abazov, V. M.; et al. (2005). "Search for Supersymmetry via Associated Production of Charginos and Neutralinos in Final States with Three Leptons". Physical Review Letters. 95 (15): 151805. arXiv:hep-ex/0504032. Bibcode:2005PhRvL..95o1805A. doi:10.1103/PhysRevLett.95.151805. hdl:10211.3/194402. PMID 16241718. S2CID 11330299.

External links

• http://lepsusy.web.cern.ch/lepsusy/www/inoslowdmsummer02/charginolowdm_pub.html
• Alloul, Adam; Frank, Mariana; Fuks, Benjamin; De Traubenberg, Michel Rausch (2013). "Chargino and neutralino production at the Large Hadron Collider in left-right supersymmetric models". Journal of High Energy Physics. 2013 (10): 033. arXiv:1307.5073. Bibcode:2013JHEP...10..033A. doi:10.1007/JHEP10(2013)033. S2CID 53978829.