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arXiv · 2005.10453

Pion magnetic polarisability using the background field method

Ryan Bignell·Waseem Kamleh·Derek Leinweber
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Abstract

The magnetic polarisability is a fundamental property of hadrons, which provides insight into their structure in the low-energy regime. The pion magnetic polarisability is calculated using lattice QCD in the presence of background magnetic fields. The results presented are facilitated by the introduction of a new magnetic-field dependent quark-propagator eigenmode projector and the use of the background-field corrected clover fermion action. The magnetic polarisabilities are calculated in a relativistic formalism, and the excellent signal-to-noise property of pion correlation functions facilitates precise values.

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Ryan Bignell, Waseem Kamleh, Derek Leinweber. 2020-11-06. Pion magnetic polarisability using the background field method. https://doi.org/10.1016/j.physletb.2020.135853

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