Particle production at high baryon density in central Au+Au reactions at 11.6<mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML" display="inline"><mml:mi>A</mml:mi></mml:math>GeV/<mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML" display="inline"><mml:mi>c</mml:mi></mml:math>
L. AhleMassachusetts Institute of Technology, Cambridge, United StatesY. AkibaThe University of Tokyo, Tokyo, JapanK. AshktorabBrookhaven National Laboratory, Upton, United StatesM. D. BakerMassachusetts Institute of Technology, Cambridge, United StatesD. BeavisBrookhaven National Laboratory, Upton, United StatesH. C. BrittLawrence Livermore National Laboratory, Livermore, United StatesJ. ChangUniversity of California, Riverside, Riverside, United StatesC. ChasmanBrookhaven National Laboratory, Upton, United StatesZ. ChenBrookhaven National Laboratory, Upton, United StatesC. Y.Columbia University, New York, United StatesY. Y. ChuBrookhaven National Laboratory, Upton, United StatesV. CiancioloLawrence Livermore National Laboratory, Livermore, United StatesB. ColeColumbia University, New York, United StatesH. J. CrawfordUniversity of California, Berkeley, Berkeley, United StatesJ. B. CummingBrookhaven National Laboratory, Upton, United StatesR. DebbeBrookhaven National Laboratory, Upton, United StatesJ. C. DunlopMassachusetts Institute of Technology, Cambridge, United StatesW. EldredgeUniversity of California, Riverside, Riverside, United StatesJ. EngelageUniversity of California, Berkeley, Berkeley, United StatesS.-Y. FungUniversity of California, Riverside, Riverside, United StatesJ. J. GaardhøjeUniversity of Copenhagen, Copenhagen, DenmarkE. Garcı́aUniversity of Maryland, College Park, College Park, United StatesM. GoninBrookhaven National Laboratory, Upton, United StatesS. GushueBrookhaven National Laboratory, Upton, United StatesH. HamagakiThe University of Tokyo, Tokyo, JapanA. HansenUniversity of Copenhagen, Copenhagen, DenmarkLouise HansenUniversity of Copenhagen, Copenhagen, DenmarkR. HayanoThe University of Tokyo, Tokyo, JapanG. HeintzelmanMassachusetts Institute of Technology, Cambridge, United StatesS. HommaThe University of Tokyo, Tokyo, JapanE. G. JuddUniversity of California, Berkeley, Berkeley, United StatesH. KanekoKyoto University, Kyoto, JapanJ. H. KangE. J. KimYonsei University, Seoul, South KoreaA. KumagaiUniversity of Tsukuba, Tsukuba, JapanK. KuritaUniversity of Tsukuba, Tsukuba, JapanJ. H. LeeBrookhaven National Laboratory, Upton, United StatesM. J. LeVineBrookhaven National Laboratory, Upton, United StatesJon C. LukeLawrence Livermore National Laboratory, Livermore, United StatesY. MiakeUniversity of Tsukuba, Tsukuba, JapanA. C. MignereyUniversity of Maryland, College Park, College Park, United StatesD. MorrisonMassachusetts Institute of Technology, Cambridge, United StatesB. MoskowitzBrookhaven National Laboratory, Upton, United StatesM. MoulsonColumbia University, New York, United StatesC. MüentzBrookhaven National Laboratory, Upton, United StatesS. NagamiyaColumbia University, New York, United StatesM.N. NamboodiriLawrence Livermore National Laboratory, Livermore, United StatesC. A. OgilvieMassachusetts Institute of Technology, Cambridge, United StatesJ. W. OlnessBrookhaven National Laboratory, Upton, United StatesS. ParkMassachusetts Institute of Technology, Cambridge, United StatesL. P. RemsbergBrookhaven National Laboratory, Upton, United StatesP. RothschildMassachusetts Institute of Technology, Cambridge, United StatesH. SakoThe University of Tokyo, Tokyo, JapanT. C. SangsterLawrence Livermore National Laboratory, Livermore, United StatesR. SetoUniversity of California, Riverside, Riverside, United StatesJ. SheaUniversity of Maryland, College Park, College Park, United StatesK. ShigakiThe University of Tokyo, Tokyo, JapanR. A. SoltzMassachusetts Institute of Technology, Cambridge, United StatesS. G. SteadmanMassachusetts Institute of Technology, Cambridge, United StatesG. S. F. StephansMassachusetts Institute of Technology, Cambridge, United StatesTae-Hyun SungMassachusetts Institute of Technology, Cambridge, United StatesM. J. TannenbaumBrookhaven National Laboratory, Upton, United StatesJ. H. ThomasLawrence Livermore National Laboratory, Livermore, United StatesS. TonseLawrence Livermore National Laboratory, Livermore, United StatesS. Ueno-HayashiUniversity of Tsukuba, Tsukuba, JapanF. VidebækBrookhaven National Laboratory, Upton, United StatesF. WangColumbia University, New York, United StatesY. WangColumbia University, New York, United StatesY. WuColumbia University, New York, United StatesH. XiangUniversity of California, Riverside, Riverside, United StatesG. XuUniversity of California, Riverside, Riverside, United StatesK. YagiUniversity of Tsukuba, Tsukuba, JapanD. ZacharyMassachusetts Institute of Technology, Cambridge, United StatesW. A. ZajcColumbia University, New York, United StatesF. ZhuBrookhaven National Laboratory, Upton, United StatesQingjun ZhuUniversity of California, Riverside, Riverside, United States
1998en
ABI
Annotatsiya
Semi-inclusive proton and pion distributions from central Au+Au reactions at 11.6$A$ GeV/$c$ have been measured. The proton rapidity distribution shows significantly increased stopping compared to lighter systems, providing strong evidence for the formation of a state of matter with baryon density substantially greater than normal nuclear matter. Unlike reactions at this energy induced by lighter heavy ions, at low ${m}_{t}\ensuremath{-}{m}_{0}$ the proton invariant spectra deviate from a single exponential shape and become flatter, while ${\ensuremath{\pi}}^{\ensuremath{-}}$ spectra are found to rise faster than the ${\ensuremath{\pi}}^{+}$ spectra.
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