the projection of the spin of an elementary particle on the direction of propagation
Word origin
C20: from helix + -ity
Examples of 'helicity' in a sentence
helicity
This occurs for subsets of phase space in some helicity configurations.
Andreas Helset, Michael Trott 2018, 'On interference and non-interference in the SMEFT', Journal of High Energy Physicshttp://link.springer.com/article/10.1007/JHEP04(2018)038. Retrieved from DOAJ CC BY 4.0 (https://creativecommons.org/licenses/by-sa/4.0/legalcode)
The overall statistical distribution of helicity has peaks at 0° and 30°.
Sithara S. Wijeratne, Nolan C. Harris, Ching-Hwa Kiang 2010, 'Helicity Distributions of Single-Walled Carbon Nanotubes and Its Implication on theGrowth Mechanism', Materialshttp://www.mdpi.com/1996-1944/3/4/2725/. Retrieved from DOAJ CC BY 4.0 (https://creativecommons.org/licenses/by-sa/4.0/legalcode)
Helicity distribution in rotating fluid layer with localized heat source was analysed.
Sukhanovskii A., Evgrafova A., Popova E. 2017, 'Helicity of Convective Flows from Localized Heat Source in a Rotating Layer', Archive of Mechanical Engineeringhttp://www.degruyter.com/view/j/meceng.2017.64.issue-2/meceng-2017-0011/meceng-2017-0011.xml?format=INT. Retrieved from DOAJ CC BY 4.0 (https://creativecommons.org/licenses/by-sa/4.0/legalcode)
These are unpolarized, helicity, transversity, pretzelosity and linearly polarized gluon distributions.
Daniel Gutiérrez-Reyes, Ignazio Scimemi, Alexey A. Vladimirov 2017, 'Twist-2 matching of transverse momentum dependent distributions', Physics Letters Bhttp://www.sciencedirect.com/science/article/pii/S0370269317302198. Retrieved from DOAJ CC BY 4.0 (https://creativecommons.org/licenses/by-sa/4.0/legalcode)
Helical regions were classified according to their level of helicity from high to none.
Narwani Tarun Jairaj, Craveur Pierrick, Shinada Nicolas K., Santuz Hubert, RebehmedJoseph, Etchebest Catherine, de Brevern Alexandre G. 2018, 'Dynamics and deformability of α-, 310- and π-helices', Archives of Biological Scienceshttp://www.doiserbia.nb.rs/img/doi/0354-4664/2018/0354-46641700022N.pdf. Retrieved from DOAJ CC BY 4.0 (https://creativecommons.org/licenses/by-sa/4.0/legalcode)
Moreover, helicity gives rise to the turbulent diffusivity, which has been calculated in one-loop approximation.
M.Hnatich, M.Jurcisin, M.Repasan 2005, 'Toy models of developed turbulence', Condensed Matter Physicshttp://dx.doi.org/10.5488/CMP.8.1.123. Retrieved from DOAJ CC BY 4.0 (https://creativecommons.org/licenses/by-sa/4.0/legalcode)
Helicity offers an alternative approach to investigations of the structure of turbulent flows.
V. Tesař 2005, 'Time-Mean Helicity Distribution in Turbulent Swirling Jets', Acta Polytechnicahttps://ojs.cvut.cz/ojs/index.php/ap/article/view/776. Retrieved from DOAJ CC BY 4.0 (https://creativecommons.org/licenses/by-sa/4.0/legalcode)
We also evaluate the helicity amplitudes and the decay rate.
H. Bahtiyar, K.U. Can, G. Erkol, M. Oka 2015, 'Ωcγ→Ωc⁎ transition in lattice QCD', Physics Letters Bhttp://www.sciencedirect.com/science/article/pii/S0370269315004281. Retrieved from DOAJ CC BY 4.0 (https://creativecommons.org/licenses/by-sa/4.0/legalcode)
It allows for a straightforward derivation of the helicity-dependent transformation rules.
K. Bolonek-Lasoń, P. Kosiński, P. Maślanka 2017, 'Lorentz transformations, sideways shift and massless spinning particles', Physics Letters Bhttp://www.sciencedirect.com/science/article/pii/S0370269317302228. Retrieved from DOAJ CC BY 4.0 (https://creativecommons.org/licenses/by-sa/4.0/legalcode)