Absence of Suppression in Particle Production at Large Transverse Momentum in<mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML" display="inline"><mml:msqrt><mml:msub><mml:mi>s</mml:mi><mml:mrow><mml:mi>N</mml:mi><mml:mi>N</mml:mi></mml:mrow></mml:msub></mml:msqrt><mml:mo>=</mml:mo><mml:mn>200</mml:mn><mml:mtext> </mml:mtext><mml:mtext> </mml:mtext><mml:mi mathvariant="normal">G</mml:mi><mml:mi mathvariant="normal">e</mml:mi><mml:mi mathvariant="normal">V</mml:mi></mml:math><mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML" display="inline"><mml:mi>d</mml:mi><mml:mo>+</mml:mo><mml:mi mathvariant="normal">A</mml:mi><mml:mi mathvariant="normal">u</mml:mi></mml:math>Collisions
Stephen AdlerBrookhaven National Laboratory, Upton, New York 11973-5000, USAS. AfanasievJoint Institute for Nuclear Research, 141980 Dubna, Moscow Region, RussiaC. AidalaNevis Laboratories, Irvington, New York 10533, USAN. N. AjitanandUniversity of Colorado, Boulder, Colorado 80309, USAY. AkibaKEK, High Energy Accelerator Research Organization, Tsukuba-shi, Ibaraki-ken 305-0801, JapanA. Al-JamelNew Mexico State University, Las Cruces, New Mexico 88003, USAJ. AlexanderUniversity of Colorado, Boulder, Colorado 80309, USAK. AokiKyoto University, Kyoto 606, JapanL. Aphecetche/A, HungaryR. ArméndarizNew Mexico State University, Las Cruces, New Mexico 88003, USAS. H. AronsonBrookhaven National Laboratory, Upton, New York 11973-5000, USAR. AverbeckChina Institute of Atomic Energy (CIAE), Beijing, People's Republic of ChinaT. C. AwesOak Ridge National Laboratory, Oak Ridge, Tennessee 37831, USAV. BabintsevInstitute for High Energy Physics (IHEP), Protvino, RussiaA. BaldisseriDapnia, CEA Saclay, F-91191, Gif-sur-Yvette, FranceK. N. BarishUniversity of California-Riverside, Riverside, California 92521, USAP. D. BarnesLos Alamos National Laboratory, Los Alamos, New Mexico 87545, USAB. BassalleckUniversity of New Mexico, Albuquerque, New Mexico, USAS. BatheUniversity of California-Riverside, Riverside, California 92521, USAS. BatsouliColumbia University, New York, New York 10027, USA, andV. BaublisPNPI, Petersburg Nuclear Physics Institute, Gatchina, RussiaF. BauerUniversity of California-Riverside, Riverside, California 92521, USAA. BazilevskyRIKEN BNL Research Center, Brookhaven National Laboratory, Upton, New York 11973-5000, USAS. BelikovInstitute for High Energy Physics (IHEP), Protvino, RussiaM. T. BjorndalColumbia University, New York, New York 10027, USA, andJ. G. BoissevainLos Alamos National Laboratory, Los Alamos, New Mexico 87545, USAH. BorelDapnia, CEA Saclay, F-91191, Gif-sur-Yvette, FranceM. L. BrooksLos Alamos National Laboratory, Los Alamos, New Mexico 87545, USAD. S. BrownNew Mexico State University, Las Cruces, New Mexico 88003, USAN. BrunerUniversity of New Mexico, Albuquerque, New Mexico, USAD. BucherCenter for Nuclear Study, Graduate School of Science, University of Tokyo, 7-3-1 Hongo, Bunkyo, Tokyo 113-0033, JapanH. BueschingBrookhaven National Laboratory, Upton, New York 11973-5000, USAV. BumazhnovInstitute for High Energy Physics (IHEP), Protvino, RussiaG. BunceRIKEN BNL Research Center, Brookhaven National Laboratory, Upton, New York 11973-5000, USAJ. M. Burward-HoyLawrence Livermore National Laboratory, Livermore, California 94550, USAS. Butsyk/A, HungaryX. CamardUniversity of Colorado, Boulder, Colorado 80309, USAP. ChandBhabha Atomic Research Centre, Bombay 400 085, IndiaW. C. ChangInstitute of Physics, Academia Sinica, Taipei 11529, TaiwanS. ChernichenkoInstitute for High Energy Physics (IHEP), Protvino, RussiaC. Y.Columbia University, New York, New York 10027, USA, andJ. ChibaKEK, High Energy Accelerator Research Organization, Tsukuba-shi, Ibaraki-ken 305-0801, JapanM. ChiuNevis Laboratories, Irvington, New York 10533, USAI. J. Choi/A, HungaryR. K. ChoudhuryBhabha Atomic Research Centre, Bombay 400 085, IndiaT. ChujoBrookhaven National Laboratory, Upton, New York 11973-5000, USAV. CiancioloOak Ridge National Laboratory, Oak Ridge, Tennessee 37831, USAY. CobigoDapnia, CEA Saclay, F-91191, Gif-sur-Yvette, FranceB. A. ColeColumbia University, New York, New York 10027, USA, andM. P. CometsIPN-Orsay, Universite Paris Sud, CNRS-IN2P3, BP1, F-91406, Orsay, FranceP. ConstantinIowa State University, Ames, Iowa 50011, USAM. CsanádELTE, Eo ¨tvo ¨s Lora ´nd University, H-1117 Budapest, Pa ´zma ´ny P. sT. CsörgőKFKI Research Institute for Particle and Nuclear Physics (RMKI), H-1525 Budapest 114, P.O. Box 49, HungaryJ. P. CussonneauChina Institute of Atomic Energy (CIAE), Beijing, People's Republic of ChinaD. d’EnterriaNevis Laboratories, Irvington, New York 10533, USAK. DasFlorida State University, Tallahassee, Florida 32306, USAG. DavidBrookhaven National Laboratory, Upton, New York 11973-5000, USAF. DeákELTE, Eo ¨tvo ¨s Lora ´nd University, H-1117 Budapest, Pa ´zma ´ny P. sH. Delagrange(PHENIX Collaboration)A. DenisovInstitute for High Energy Physics (IHEP), Protvino, RussiaA. DeshpandeRIKEN BNL Research Center, Brookhaven National Laboratory, Upton, New York 11973-5000, USAE. J. DesmondBrookhaven National Laboratory, Upton, New York 11973-5000, USAA. DevismesChina Institute of Atomic Energy (CIAE), Beijing, People's Republic of ChinaO. DietzschUniversidade de Sa ˜o Paulo, Instituto de Fı ´sica, Caixa Postal 66318, Sa ˜o Paulo CEP05315-970, Brazil 42 System Electronics Laboratory, Seoul National University, Seoul, South Korea 43 Chemistry Department, Stony Brook University, SUNY, Stony Brook, New York 11794-3400, USA 44 Department of Physics and Astronomy, Stony Brook University, SUNY, Stony Brook, New York 11794, USA 45 SUBATECH (Ecole des Mines de Nantes, CNRS-IN2P3, Universite ´de Nantes) BP 20722-44307, Nantes, France 46 University of Tennessee, Knoxville, Tennessee 37996, USA 47 Department of Physics, Tokyo Institute of Technology, Tokyo, 152-8551, Japan 48 Institute of Physics, University of Tsukuba, Tsukuba, Ibaraki 305, Japan 49 Vanderbilt University, Nashville, Tennessee 37235, USA 50 Waseda University, Advanced Research Institute for Science and Engineering, 17 Kikui-cho, Shinjuku-ku, Tokyo 162-0044, Japan 51 Weizmann Institute, Rehovot 76100, Israel 52 Yonsei University, IPAP, Seoul 120-749, KoreaJ. L. DrachenbergCenter for Nuclear Study, Graduate School of Science, University of Tokyo, 7-3-1 Hongo, Bunkyo, Tokyo 113-0033, JapanO. DrapierLaboratoire Leprince-Ringuet, Ecole Polytechnique, CNRS-IN2P3, Route de Saclay, F-91128, Palaiseau, FranceA. DreesAbilene Christian University, Abilene, Texas 79699, USAA. DurumInstitute for High Energy Physics (IHEP), Protvino, RussiaDipanwita DuttaBhabha Atomic Research Centre, Bombay 400 085, IndiaV. Dzhordzhadze/A, HungaryY. V. EfremenkoOak Ridge National Laboratory, Oak Ridge, Tennessee 37831, USAH. En’yoRIKEN BNL Research Center, Brookhaven National Laboratory, Upton, New York 11973-5000, USAB. EspagnonIPN-Orsay, Universite Paris Sud, CNRS-IN2P3, BP1, F-91406, Orsay, FranceS. Esumi/A, HungaryD. E. FieldsUniversity of New Mexico, Albuquerque, New Mexico, USAC. Finck(PHENIX Collaboration)F. FleuretCenter for Nuclear Study, Graduate School of Science, University of Tokyo, 7-3-1 Hongo, Bunkyo, Tokyo 113-0033, JapanS. FokinRussian Research Center, ''Kurchatov Institute,'' Moscow, RussiaB. D. FoxCenter for Nuclear Study, Graduate School of Science, University of Tokyo, 7-3-1 Hongo, Bunkyo, Tokyo 113-0033, JapanZ. FraenkelCenter for Nuclear Study, Graduate School of Science, University of Tokyo, 7-3-1 Hongo, Bunkyo, Tokyo 113-0033, JapanJ. E. FrantzAbilene Christian University, Abilene, Texas 79699, USAA. Franz/A, HungaryA. D. FrawleyFlorida State University, Tallahassee, Florida 32306, USAY. FukaoKyoto University, Kyoto 606, JapanS.-Y. FungChina Institute of Atomic Energy (CIAE), Beijing, People's Republic of ChinaS. GadratLPC, Universite ´Blaise Pascal, CNRS-IN2P3, Clermont-Fd, 63177 Aubiere Cedex, FranceM. GermainUniversity of Colorado, Boulder, Colorado 80309, USAA. Glenn(PHENIX Collaboration)M. GoninAbilene Christian University, Abilene, Texas 79699, USAJ. GössetDapnia, CEA Saclay, F-91191, Gif-sur-Yvette, FranceY. GotoCenter for Nuclear Study, Graduate School of Science, University of Tokyo, 7-3-1 Hongo, Bunkyo, Tokyo 113-0033, JapanR. Granier de CassagnacUniversity of Colorado, Boulder, Colorado 80309, USAN. GrauIowa State University, Ames, Iowa 50011, USAS. V. GreeneChina Institute of Atomic Energy (CIAE), Beijing, People's Republic of ChinaM. Große PerdekampUniversity of Illinois at Urbana-Champaign, Urbana, Illinois 61801, USAH.-Å. GustafssonDepartment of Physics, Lund University, Box 118, SE-221 00 Lund, SwedenT. HachiyaHiroshima University, Kagamiyama, Higashi-Hiroshima 739-8526, JapanJ. S. Haggerty(PHENIX Collaboration)H. Hamagaki(PHENIX Collaboration)A. G. HansenLos Alamos National Laboratory, Los Alamos, New Mexico 87545, USA
2003lv
ABI
Аннотация
Transverse momentum spectra of charged hadrons with ${p}_{T}<8\text{ }\text{ }\mathrm{G}\mathrm{e}\mathrm{V}/c$ and neutral pions with ${p}_{T}<10\text{ }\text{ }\mathrm{G}\mathrm{e}\mathrm{V}/c$ have been measured at midrapidity by the PHENIX experiment at BNL RHIC in $d+\mathrm{A}\mathrm{u}$ collisions at $\sqrt{{s}_{NN}}=200\text{ }\text{ }\mathrm{G}\mathrm{e}\mathrm{V}$. The measured yields are compared to those in $p+p$ collisions at the same $\sqrt{{s}_{NN}}$ scaled up by the number of underlying nucleon-nucleon collisions in $d+\mathrm{A}\mathrm{u}$. The yield ratio does not show the suppression observed in central $\mathrm{A}\mathrm{u}+\mathrm{A}\mathrm{u}$ collisions at RHIC. Instead, there is a small enhancement in the yield of high momentum particles.
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