Suppression of back-to-back particle–antiparticle correlations in high energy nuclear collisions

In 1996 Asakawa and Csörgő [1] suggested that backto-back particle–antiparticle correlations should be observable in high-energy nuclear collisions, see also earlier considerations in Refs. [2, 3]. Based on a sudden transition assumption huge effects were predicted for this phenomenon. In a subsequent paper together with Gyulassy [4] it was shown that the finite duration τ of the transition reduces the effect. In that paper, however, the authors used a discontinuous and therefore unrealistic transition profile that led to large ultraviolet Fourier components and thus to a very moderate reduction of the effect of order 1/((2ωτ) + 1). Here 2ω is the energy required to produce the pair. About a further dozen applications based on this unrealistic assumptions followed,