引用本文: | Herrmann N,Bock R,Emling H,Freifelder R,Gobbi A,Grosse E,Hildenbrand KD,Kulessa R,Matulewicz T,Rami F,Simon RS,Stelzer H,Wessels J,Maurenzig PR,Olmi A,Stefanini AA,Kühn W,Metag V,Novotny R,Gnirs M,Pelte D,Braun-Munzinger P,Moretto LG.Hard photons in heavy-ion collisions: Direct or statistical?[J].Physical review letters,1988,60(16):1630-1633. |