Taiyo Kobayashi
University of Tsukuba
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Proceedings of the XXVI international conference on high energy physics | 2008
H. Atherton; H. Bo; ggild; J. G. Boissevain; K. Bussmann; M. Cherney; E. Chesi; G. DiTore; J. Dodd; J. Downing; S. Esumi; C. Fabjan; A. Franz; K. H. Hansen; T. J. Humanic; T. Ikemoto; B. V. Jacak; R. Jayanti; H. Kalechofsky; Taiyo Kobayashi; R. Kuatadze; Y.Y. Lee; M. Leltchouk; D. Linker; B. Lörstad; N. Maeda; A. Medvedev; Y. Miake; A. Miyabayashi; Michael Murray
We present preliminary results on the M[sub T] spectra of identified pions, kaons, and protons around central rapidity originating from collisions of 450GeV/c incident protons on Be, S and Pb targets as well as 200AGeV/c Sulfur ions on S and Pb targets. Two particle Hanbury-Brown Twiss interferometry results are also given for identified pion and kaon pairs.
Archive | 1996
M. Murray; H. Beker; Ian Gardner Bearden; H. Bøggild; K. Bussman; J. G. Boissevain; J. Dodd; D. Hardtke; M. Hamelin; S. Esumi; C. Fabjan; D. E. Fields; A. Franz; B. Erazmus; J. J. Gaardhøje; Ole Hansen; E.B. Holzer; T. J. Humanic; P. Hummel; B. V. Jacak; R. Jayanti; H. Kalechofsky; Taiyo Kobayashi; R. Kvatadze; M. Leltchouk; B. Lörstad; N. Maeda; A. Medvedev; Y. Miake; A. Miyabayashi
The yields and inverse slopes ofK ± MT distributions at central rapidity are presented for pBe, pS, pPb, SS, SPb and PbPb collisions. The ratios ofK −/K+ and({{bar p} mathord{left/ {vphantom {{bar p} p}} right. kern-nulldelimiterspace} p}) decrease with system size and centrality. Comparing the slopes of pions, kaons and protons suggests that transverse flow is present in AA collisions but not in pPb collisions. For PbPb collisions the inverse slopes of theK − andK + MT spectra are very close but for pPb the inverse slope ofK + exceeds that ofK −. These results suggest that thermal equilibrium is reached in central heavy ion collisions but not in pPb collisions.
