This might be caused by nuclear deformation and nucleonpair effect, and the experimental inaccuracy should not be neglected.
这可能是核形变及核子对效应造成的,试验中的测量误差也不可忽视。
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Events recorded by the ALICE experiment from the first lead ion collisions at a centre-of-mass energy of 2.76 TeV per nucleonpair. (CERN LHC Alice Detector)