Abstract
Surprisingly, the new APEX experiment designed[1] to measure a definitive invariant mass distribution1 of the sharp pairs previously observed[2, 3] in similar heavy ion studies reports null results[4, 5]. Although it asserts no direct conflict with any data reported by EPOS/I, and critics claim that its published analysis is inconsistent [6, 7] and not contradictory to EPOS/I, the APEX report nevertheless seems to have encouraged the view that the earlier (EPOS/I) observations were erroneous, and by extrapolation, that the whole (e + e −) Puzzle data set can be dismissed as an unfortunate set of physically meaningless statisical fluctuations.
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Griffin, J.J. (1996). The Sharp Lepton Quandary: Reasonable Cautions. In: Bauer, W., Westfall, G.D. (eds) Advances in Nuclear Dynamics 2. Springer, Boston, MA. https://doi.org/10.1007/978-1-4757-9086-3_43
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