Comment on Phys. Rev. Lett. 109, 152005 (2012)
A. Harindranath, Rajen Kundu, Asmita Mukherjee, Raghunath Ratabole
TL;DR
This paper critiques a previous work on light front theory, clarifying the correct identification of boost and rotation operators and challenging claims about Lorentz symmetry and parton interpretation.
Contribution
It corrects the misidentification of operators in light front theory and questions the previous claims about Lorentz symmetry manifestations.
Findings
Transverse boost operator was misidentified in prior work.
Lorentz symmetry claims in the previous paper are unsupported.
Parton interpretation applies to transverse boost, not rotation.
Abstract
The identifications of transverse boost and rotation operators in light front theory done in Phys. Rev. Lett. {109}, 152005 (2012) is incorrect. The simple parton interpretation claimed is, in fact, for the transverse boost operator. Manifestation of Lorentz symmetry as claimed in the context of their calculation involving transverse Pauli-Lubanski polarization vector is unsupported.
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Taxonomy
TopicsQuantum Chromodynamics and Particle Interactions · Relativity and Gravitational Theory · Particle physics theoretical and experimental studies