Event-by-event fluctuations in mean<mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML" display="inline"><mml:mrow><mml:msub><mml:mrow><mml:mi>p</mml:mi></mml:mrow><mml:mrow><mml:mi>T</mml:mi></mml:mrow></mml:msub></mml:mrow></mml:math>and mean<mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML" display="inline"><mml:mrow><mml:msub><mml:mrow><mml:mi>e</mml:mi></mml:mrow><mml:mrow><mml:mi>T</mml:mi></mml:mrow></mml:msub></mml:mrow></mml:math>in<mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML" display="inline"><mml:msqrt><mml:mrow><mml:mrow><mml:msub><mml:mrow><mml:mi>s</mml:mi></mml:mrow><mml:mrow><mml:mi>NN</mml:mi></mml:mrow></mml:msub></mml:mrow></mml:mrow></mml:msqrt><mml:mo>=</mml:mo><mml:mn>130</mml:mn><mml:mn/><mml:mi> </mml:mi><mml:mi mathvariant="normal">GeV</mml:mi></mml:math>Au+Au collisions
K. AdcoxVanderbilt University, Nashville, Tennesse 37235Stephen AdlerBrookhaven National Laboratory, Upton, New York, 11973-5000N. N. AjitanandChemistry Department, State University of New York–Stony Brook, Stony Brook, New York 11794Y. AkibaKEK, High Energy Accelerator Research Organization, Tsukuba-shi, Ibaraki-ken 305-0801, JapanJ. AlexanderChemistry Department, State University of New York–Stony Brook, Stony Brook, New York 11794L. AphecetcheSUBATECH (Ecole des Mines de Nantes, IN2P3/CNRS, Universite de Nantes) Boîte Postale 20722-44307, Nantes-cedex 3, FranceY. AraiKEK, High Energy Accelerator Research Organization, Tsukuba-shi, Ibaraki-ken 305-0801, JapanS. H. AronsonBrookhaven National Laboratory, Upton, New York, 11973-5000R. AverbeckDepartment of Physics and Astronomy, State University of New York–Stony Brook, Stony Brook, New York 11794T. C. AwesOak Ridge National Laboratory, Oak Ridge, Tennessee 37831K. N. BarishUniversity of California–Riverside, Riverside, California 92521P. D. BarnesLos Alamos National Laboratory, Los Alamos, New Mexico 87545J. BarretteMcGill University, Montreal, Quebec, Canada H3A 2T8B. BassalleckUniversity of New Mexico, Albuquerque, New Mexico 87131S. BatheInstitut für Kernphysik, University of Münster, D-48149 Münster, GermanyV. BaublisPNPI, Petersburg Nuclear Physics Institute, Gatchina, RussiaA. BazilevskyInstitute for High Energy Physics (IHEP), Protvino, RussiaS. BelikovInstitute for High Energy Physics (IHEP), Protvino, RussiaF. BellaicheOak Ridge National Laboratory, Oak Ridge, Tennessee 37831S.T. BelyaevRussian Research Center “Kurchatov Institute,” Moscow, RussiaM. J. BennettLos Alamos National Laboratory, Los Alamos, New Mexico 87545Y. BerdnikovS. BotelhoUniversidade de São Paulo, Instituto de Física, Caixa Postal 66318, São Paulo CEP05315-970, BrazilM. L. BrooksLos Alamos National Laboratory, Los Alamos, New Mexico 87545D. S. BrownNew Mexico State University, Las Cruces, New Mexico 88003N. BrunerUniversity of New Mexico, Albuquerque, New Mexico 87131D. BucherInstitut für Kernphysik, University of Münster, D-48149 Münster, GermanyH. BueschingInstitut für Kernphysik, University of Münster, D-48149 Münster, GermanyV. BumazhnovInstitute for High Energy Physics (IHEP), Protvino, RussiaG. BunceBrookhaven National Laboratory, Upton, New York, 11973-5000J. M. Burward-HoyDepartment of Physics and Astronomy, State University of New York–Stony Brook, Stony Brook, New York 11794S. ButsykDepartment of Physics and Astronomy, State University of New York–Stony Brook, Stony Brook, New York 11794T. A. CareyLos Alamos National Laboratory, Los Alamos, New Mexico 87545P. ChandBhabha Atomic Research Centre, Bombay 400 085, IndiaW. C. ChangUniversity of California–Riverside, Riverside, California 92521L. L. ChavezUniversity of New Mexico, Albuquerque, New Mexico 87131S. ChernichenkoInstitute for High Energy Physics (IHEP), Protvino, RussiaC. Y.Columbia University, New York, New York 10027Nevis Laboratories, Irvington, New York 10533J. ChibaKEK, High Energy Accelerator Research Organization, Tsukuba-shi, Ibaraki-ken 305-0801, JapanM. ChiuColumbia University, New York, New York 10027Nevis Laboratories, Irvington, New York 10533R. K. ChoudhuryBhabha Atomic Research Centre, Bombay 400 085, IndiaT. ChristDepartment of Physics and Astronomy, State University of New York–Stony Brook, Stony Brook, New York 11794T. ChujoBrookhaven National Laboratory, Upton, New York, 11973-5000M. S. ChungKorea University, Seoul, 136-701, KoreaP. ChungChemistry Department, State University of New York–Stony Brook, Stony Brook, New York 11794V. CiancioloOak Ridge National Laboratory, Oak Ridge, Tennessee 37831B. A. ColeColumbia University, New York, New York 10027Nevis Laboratories, Irvington, New York 10533D. d’EnterriaSUBATECH (Ecole des Mines de Nantes, IN2P3/CNRS, Universite de Nantes) Boîte Postale 20722-44307, Nantes-cedex 3, FranceG. DavidBrookhaven National Laboratory, Upton, New York, 11973-5000H. DelagrangeSUBATECH (Ecole des Mines de Nantes, IN2P3/CNRS, Universite de Nantes) Boîte Postale 20722-44307, Nantes-cedex 3, FranceA. DenisovInstitute for High Energy Physics (IHEP), Protvino, RussiaA. DeshpandeRIKEN BNL Research Center, Brookhaven National Laboratory, Upton, New York 11973-5000E. J. DesmondBrookhaven National Laboratory, Upton, New York, 11973-5000O. DietzschUniversidade de São Paulo, Instituto de Física, Caixa Postal 66318, São Paulo CEP05315-970, BrazilB. V. DineshBhabha Atomic Research Centre, Bombay 400 085, IndiaA. DreesDepartment of Physics and Astronomy, State University of New York–Stony Brook, Stony Brook, New York 11794A. DurumInstitute for High Energy Physics (IHEP), Protvino, RussiaDipanwita DuttaBhabha Atomic Research Centre, Bombay 400 085, IndiaK. EbisuNagasaki Institute of Applied Science, Nagasaki-shi, Nagasaki 851-0193, JapanY. V. EfremenkoOak Ridge National Laboratory, Oak Ridge, Tennessee 37831K. El ChenawiVanderbilt University, Nashville, Tennesse 37235H. En’yoKyoto University, Kyoto 606, JapanS. EsumiInstitute of Physics, University of Tsukuba, Tsukuba, Ibaraki 305, JapanL. EwellBrookhaven National Laboratory, Upton, New York, 11973-5000T. FerdousiUniversity of California–Riverside, Riverside, California 92521D. E. FieldsUniversity of New Mexico, Albuquerque, New Mexico 87131S. FokinRussian Research Center “Kurchatov Institute,” Moscow, RussiaZ. FraenkelWeizmann Institute, Rehovot 76100, IsraelA. FranzBrookhaven National Laboratory, Upton, New York, 11973-5000A. D. FrawleyFlorida State University, Tallahassee, Florida 32306S. Y. FungUniversity of California–Riverside, Riverside, California 92521S. GarpmanDepartment of Physics, Lund University, Box 118, SE-221 00 Lund, SwedenT. K. GhoshVanderbilt University, Nashville, Tennesse 37235A. GlennUniversity of Tennessee, Knoxville, Tennessee 37996A. L. GodoiUniversidade de São Paulo, Instituto de Física, Caixa Postal 66318, São Paulo CEP05315-970, BrazilY. GotoRIKEN BNL Research Center, Brookhaven National Laboratory, Upton, New York 11973-5000S. V. GreeneVanderbilt University, Nashville, Tennesse 37235M. Große PerdekampRIKEN BNL Research Center, Brookhaven National Laboratory, Upton, New York 11973-5000S. K. GuptaBhabha Atomic Research Centre, Bombay 400 085, IndiaW. GurynBrookhaven National Laboratory, Upton, New York, 11973-5000H.-Å. GustafssonDepartment of Physics, Lund University, Box 118, SE-221 00 Lund, SwedenJ. S. HaggertyBrookhaven National Laboratory, Upton, New York, 11973-5000H. HamagakiCenter for Nuclear Study, Graduate School of Science, University of Tokyo, 7-3-1 Hongo, Bunkyo, Tokyo 113-0033, JapanA. G. HansenLos Alamos National Laboratory, Los Alamos, New Mexico 87545Hideo HaraNagasaki Institute of Applied Science, Nagasaki-shi, Nagasaki 851-0193, JapanE. P. HartouniLawrence Livermore National Laboratory, Livermore, California 94550R. HayanoUniversity of Tokyo, Tokyo, JapanN. HayashiRIKEN (The Institute of Physical and Chemical Research), Wako, Saitama 351-0198, JapanX. HeGeorgia State University, Atlanta, Georgia 30303T. K. HemmickDepartment of Physics and Astronomy, State University of New York–Stony Brook, Stony Brook, New York 11794M. HibinoWaseda University, Advanced Research Institute for Science and Engineering, 17 Kikui-cho, Shinjuku-ku, Tokyo 162-0044, JapanJ. C. HillIowa State University, Ames, Iowa 50011D. S. HoYonsei University, IPAP, Seoul 120-749, KoreaK. HommaHiroshima University, Kagamiyama, Higashi-Hiroshima 739-8526, JapanB. HongKorea University, Seoul, 136-701, KoreaA. HooverNew Mexico State University, Las Cruces, New Mexico 88003T. IchiharaRIKEN (The Institute of Physical and Chemical Research), Wako, Saitama 351-0198, JapanK. ImaiKyoto University, Kyoto 606, Japan
2002lv
ABI
Аннотация
Distributions of event-by-event fluctuations of the mean transverse momentum and mean transverse energy near mid-rapidity have been measured in Au+Au collisions at $\sqrt{{s}_{\mathrm{NN}}}=130 \mathrm{GeV}$ at the Relativistic Heavy-Ion Collider. By comparing the distributions to what is expected for statistically independent particle emission, the magnitude of nonstatistical fluctuations in mean transverse momentum is determined to be consistent with zero. Also, no significant nonrandom fluctuations in mean transverse energy are observed. By constructing a fluctuation model with two event classes that preserve the mean and variance of the semi-inclusive ${p}_{T}$ or ${e}_{T}$ spectra, we exclude a region of fluctuations in $\sqrt{{s}_{\mathrm{NN}}}=130 \mathrm{GeV}$ Au+Au collisions.
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