a quantum number describing the behaviour of elementary particles, equal to the number of leptons present minus the number of antileptons. It is thought to be conserved in all processes
Symbol: l
lepton number in American English
noun
Physics
in a process involving elementary particles, the total number of leptons minus the total number of antileptons
Word origin
[1955–60]
Examples of 'lepton number' in a sentence
lepton number
Both lepton number conserving and violating interactions are considered.
Yasaman Farzan, Manfred Lindner, Werner Rodejohann, Xun-Jie Xu 2018, 'Probing neutrino coupling to a light scalar with coherent neutrino scattering', Journal of High Energy Physicshttp://link.springer.com/article/10.1007/JHEP05(2018)066. Retrieved from DOAJ CC BY 4.0 (https://creativecommons.org/licenses/by-sa/4.0/legalcode)
New observable predictions for lepton flavor and lepton number violations by ongoing searches are noted.
M. K. Parida, Bidyut Prava Nayak 2017, 'Singlet Fermion Assisted Dominant Seesaw with Lepton Flavor and Number Violationsand Leptogenesis', Advances in High Energy Physicshttp://dx.doi.org/10.1155/2017/4023493. Retrieved from DOAJ CC BY 4.0 (https://creativecommons.org/licenses/by-sa/4.0/legalcode)
Spontaneous and explicit violation and conservation of the lepton number are considered.
Richard H. Benavides, Luis N. Epele, Huner Fanchiotti, Carlos García Canal, WilliamA. Ponce 2015, 'Lepton Number Violation and Neutrino Masses in 3-3-1 Models', Advances in High Energy Physicshttp://dx.doi.org/10.1155/2015/813129. Retrieved from DOAJ CC BY 4.0 (https://creativecommons.org/licenses/by-sa/4.0/legalcode)
Fundamentally, these instabilities are related to the mixed gravity-lepton number anomaly.
Neil D. Barrie, Archil Kobakhidze 2017, 'Gravitational instabilities of the cosmic neutrino background with non-zero leptonnumber', Physics Letters Bhttp://www.sciencedirect.com/science/article/pii/S0370269317305592. Retrieved from DOAJ CC BY 4.0 (https://creativecommons.org/licenses/by-sa/4.0/legalcode)
Predictions on lepton flavour and lepton number violations are accessible to ongoing experiments.
M.K. Parida, Biswonath Sahoo 2016, 'Planck-scale induced left–right gauge theory at LHC and experimental tests', Nuclear Physics Bhttp://www.sciencedirect.com/science/article/pii/S055032131600078X. Retrieved from DOAJ CC BY 4.0 (https://creativecommons.org/licenses/by-sa/4.0/legalcode)
Two triality symmetries ensure both dark matter stability and strict lepton number conservation at higher orders.
Cesar Bonilla, Ernest Ma, Eduardo Peinado, Jose W.F. Valle 2016, 'Two-loop Dirac neutrino mass and WIMP dark matter', Physics Letters Bhttp://www.sciencedirect.com/science/article/pii/S0370269316305214. Retrieved from DOAJ CC BY 4.0 (https://creativecommons.org/licenses/by-sa/4.0/legalcode)
In this scenario, inflaton plays a crucial role in both generation of neutrino masses and lepton number asymmetry.
Shoichi Kashiwase, Daijiro Suematsu 2015, 'Lepton number asymmetry via inflaton decay in a modified radiative seesaw model',Physics Letters Bhttp://www.sciencedirect.com/science/article/pii/S0370269315006632. Retrieved from DOAJ CC BY 4.0 (https://creativecommons.org/licenses/by-sa/4.0/legalcode)
The predictions for lepton number violating processes such as μ→e and μ→eγ are discussed in detail.
Pavel Fileviez Pérez, Clara Murgui 2018, 'Sterile neutrinos and B–L symmetry', Physics Letters Bhttp://www.sciencedirect.com/science/article/pii/S0370269317310183. Retrieved from DOAJ CC BY 4.0 (https://creativecommons.org/licenses/by-sa/4.0/legalcode)
Its non-abelian gauge structure gives rise to, yet unobserved, non-perturbative baryon and lepton number violating processes.
Gustaaf Brooijmans, Peter Schichtel, Michael Spannowsky 2016, 'Cosmic ray air showers from sphalerons', Physics Letters Bhttp://www.sciencedirect.com/science/article/pii/S0370269316304506. Retrieved from DOAJ CC BY 4.0 (https://creativecommons.org/licenses/by-sa/4.0/legalcode)
Because of these mixings, the lepton-number violating interactions exist in both charged and neutral gauge boson sectors.
P. V. Dong, H. N. Long 2008, 'The Economical SU(3)C⊗SU(3)L⊗U(1)X Model', Advances in High Energy Physicshttp://dx.doi.org/10.1155/2008/739492. Retrieved from DOAJ CC BY 4.0 (https://creativecommons.org/licenses/by-sa/4.0/legalcode)