Magnetic excitation in relativistic heavy ion collisions

Abstract

In this note we study the conversion of nucleons into deltas induced by a strong magnetic field in ultraperipheral relativistic heavy ion collisions. The interaction Hamiltonian couples the magnetic field to the spin operator, which, acting on the spin part of the wave function, converts a spin 1/2 into a spin 3/2 state. We estimate this transition probability and calculate the cross section for delta production. This process can in principle be measured, since the delta moves close to the beam and decays almost exclusively into pions. Forward pions may be detected by forward calorimeters.

arXiv comment5 pages, 2 figures

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Cited by in corpus (3)

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• Magnetic field in relativistic heavy ion collisions: testing the classical approximation
• Constituent quark axial current couplings to light vector mesons in the vacuum and with a weak magnetic field