Measurement of High-<mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML" display="inline"><mml:msub><mml:mi>p</mml:mi><mml:mi>T</mml:mi></mml:msub></mml:math>Single Electrons from Heavy-Flavor Decays in<mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML" display="inline"><mml:mi>p</mml:mi><mml:mo>+</mml:mo><mml:mi>p</mml:mi></mml:math>Collisions at<mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML" display="inline"><mml:msqrt><mml:mi>s</mml:mi></mml:msqrt><mml:mo>=</mml:mo><mml:mn>200</mml:mn><mml:mtext> </mml:mtext><mml:mtext> </mml:mtext><mml:mi>GeV</mml:mi></mml:math>
A. AdareUniversity of Colorado, Boulder, Colorado 80309, USAS. AfanasievJoint Institute for Nuclear Research, 141980 Dubna, Moscow Region, RussiaC. AidalaColumbia University, New York, New York 10027, USA and Nevis Laboratories, Irvington, New York 10533, USAN. N. AjitanandChemistry Department, Stony Brook University, Stony Brook, SUNY, New York 11794-3400, USAY. AkibaRIKENH. Al-BatainehNew Mexico State University, Las Cruces, New Mexico 88003, USAJ. AlexanderChemistry Department, Stony Brook University, Stony Brook, SUNY, New York 11794-3400, USAK. AokiKyoto University, Kyoto 606-8502, Japan; RIKEN, The Institute of Physical and Chemical Research, Wako, Saitama 351-0198, JapanL. AphecetcheSUBATECH (Ecole des Mines de Nantes, CNRS-IN2P3, Université de Nantes), BP 20722 - 44307, Nantes, FranceR. ArméndarizNew Mexico State University, Las Cruces, New Mexico 88003, USAS. H. AronsonBrookhaven National Laboratory, Upton, New York 11973-5000, USAJ. AsaiRIKEN BNL Research Center, Brookhaven National Laboratory, Upton, New York 11973-5000, USAE. T. AtomssaLaboratoire Leprince-Ringuet, Ecole Polytechnique, CNRS-IN2P3, Route de Saclay, F-91128, Palaiseau, FranceR. AverbeckDepartment of Physics and Astronomy, Stony Brook University, SUNY, Stony Brook, New York 11794, USAT. C. AwesOak Ridge National Laboratory, Oak Ridge, Tennessee 37831, USAB. AzmounBrookhaven National Laboratory, Upton, New York 11973-5000, USAV. BabintsevIHEP Protvino, State Research Center of Russian Federation, Institute for High Energy Physics, Protvino, 142281, RussiaG. BaksayFlorida Institute of Technology, Melbourne, Florida 32901, USAL. BaksayFlorida Institute of Technology, Melbourne, Florida 32901, USAA. 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 87131, USAS. BatheUniversity of California - Riverside, Riverside, California 92521, USAS. BatsouliOak Ridge National Laboratory, Oak Ridge, Tennessee 37831, USAV. BaublisPNPI, Petersburg Nuclear Physics Institute, Gatchina, Leningrad Region, 188300, RussiaA. BazilevskyBrookhaven National Laboratory, Upton, New York 11973-5000, USAS. BelikovBrookhaven National Laboratory, Upton, New York 11973-5000, USAR. BennettDepartment of Physics and Astronomy, Stony Brook University, SUNY, Stony Brook, New York 11794, USAY. BerdnikovSaint Petersburg State Polytechnic University, St. Petersburg, RussiaA. A. BickleyUniversity of Colorado, Boulder, Colorado 80309, USAJ. G. BoissevainLos Alamos National Laboratory, Los Alamos, New Mexico 87545, USAH. BorelDapnia, CEA Saclay, F-91191, Gif-sur-Yvette, FranceK. BoyleDepartment of Physics and Astronomy, Stony Brook University, SUNY, Stony Brook, New York 11794, USAM. L. BrooksLos Alamos National Laboratory, Los Alamos, New Mexico 87545, USAH. BueschingBrookhaven National Laboratory, Upton, New York 11973-5000, USAV. BumazhnovIHEP Protvino, State Research Center of Russian Federation, Institute for High Energy Physics, Protvino, 142281, RussiaG. BunceBrookhaven National Laboratory, Upton, New York 11973-5000, USA; RIKEN BNL Research Center, Brookhaven National Laboratory, Upton, New York 11973-5000, USAS. ButsykDepartment of Physics and Astronomy, Stony Brook University, SUNY, Stony Brook, New York 11794, USA; Los Alamos National Laboratory, Los Alamos, New Mexico 87545, USAS. CampbellDepartment of Physics and Astronomy, Stony Brook University, SUNY, Stony Brook, New York 11794, USAB. S. ChangYonsei University, IPAP, Seoul 120-749, KoreaJ.-L. CharvetDapnia, CEA Saclay, F-91191, Gif-sur-Yvette, FranceS. ChernichenkoIHEP Protvino, State Research Center of Russian Federation, Institute for High Energy Physics, Protvino, 142281, RussiaJ. ChibaKEK, High Energy Accelerator Research Organization, Tsukuba, Ibaraki 305-0801, JapanC. Y.Columbia University, New York, New York 10027, USA and Nevis Laboratories, Irvington, New York 10533, USAM. ChiuUniversity of Illinois at Urbana-Champaign, Urbana, Illinois 61801, USAI. J. ChoiYonsei University, IPAP, Seoul 120-749, KoreaT. ChujoVanderbilt University, Nashville, Tennessee 37235, USAP. ChungChemistry Department, Stony Brook University, Stony Brook, SUNY, New York 11794-3400, USAA. ChurynIHEP Protvino, State Research Center of Russian Federation, Institute for High Energy Physics, Protvino, 142281, RussiaV. CiancioloOak Ridge National Laboratory, Oak Ridge, Tennessee 37831, USAC. R. ClevenGeorgia State University, Atlanta, Georgia 30303, USAB. ColeColumbia University, New York, New York 10027, USA and Nevis Laboratories, Irvington, New York 10533, USAM. P. CometsIPN-Orsay, Universite Paris Sud, CNRS-IN2P3, BP1, F-91406, Orsay, FranceP. ConstantinLos Alamos National Laboratory, Los Alamos, New Mexico 87545, USAM. CsanádELTE, Eötvös Loránd University, H - 1117 Budapest, Pázmány P. s. 1/A, HungaryT. CsörgőKFKI Research Institute for Particle and Nuclear Physics of the Hungarian Academy of Sciences (MTA KFKI RMKI), H-1525 Budapest 114, PO Box 49, Budapest, HungaryT. DahmsDepartment of Physics and Astronomy, Stony Brook University, SUNY, Stony Brook, New York 11794, USAK. DasFlorida State University, Tallahassee, Florida 32306, USAG. DavidBrookhaven National Laboratory, Upton, New York 11973-5000, USAM. B. DeatonAbilene Christian University, Abilene, Texas 79699, USAK. DehmeltFlorida Institute of Technology, Melbourne, Florida 32901, USAH. DelagrangeSUBATECH (Ecole des Mines de Nantes, CNRS-IN2P3, Université de Nantes), BP 20722 - 44307, Nantes, FranceA. DenisovIHEP Protvino, State Research Center of Russian Federation, Institute for High Energy Physics, Protvino, 142281, RussiaD. d’EnterriaColumbia University, New York, New York 10027, USA and Nevis Laboratories, Irvington, New York 10533, USAA. DeshpandeDepartment of Physics and Astronomy, Stony Brook University, SUNY, Stony Brook, New York 11794, USA; RIKEN BNL Research Center, Brookhaven National Laboratory, Upton, New York 11973-5000, USAE. J. DesmondBrookhaven National Laboratory, Upton, New York 11973-5000, USAO. DietzschInstituto de Física, Universidade de São Paulo, Caixa Postal 66318, São Paulo CEP05315-970, BrazilA. DionDepartment of Physics and Astronomy, Stony Brook University, SUNY, Stony Brook, New York 11794, USAM. DonadelliInstituto de Física, Universidade de São Paulo, Caixa Postal 66318, São Paulo CEP05315-970, BrazilO. DrapierLaboratoire Leprince-Ringuet, Ecole Polytechnique, CNRS-IN2P3, Route de Saclay, F-91128, Palaiseau, FranceA. DreesDepartment of Physics and Astronomy, Stony Brook University, SUNY, Stony Brook, New York 11794, USAA. K. DubeyWeizmann Institute, Rehovot 76100, IsraelA. DurumIHEP Protvino, State Research Center of Russian Federation, Institute for High Energy Physics, Protvino, 142281, RussiaV. DzhordzhadzeUniversity of California - Riverside, Riverside, California 92521, USAY. V. EfremenkoOak Ridge National Laboratory, Oak Ridge, Tennessee 37831, USAJ. EgdemirDepartment of Physics and Astronomy, Stony Brook University, SUNY, Stony Brook, New York 11794, USAF. EllinghausUniversity of Colorado, Boulder, Colorado 80309, USAW. S. EmamUniversity of California - Riverside, Riverside, California 92521, USAA. EnokizonoLawrence Livermore National Laboratory, Livermore, California 94550, USAH. En’yoRIKEN BNL Research Center, Brookhaven National Laboratory, Upton, New York 11973-5000, USA; RIKEN, The Institute of Physical and Chemical Research, Wako, Saitama 351-0198, JapanS. EsumiInstitute of Physics, University of Tsukuba, Tsukuba, Ibaraki 305, JapanO. EyserUniversity of California - Riverside, Riverside, California 92521, USAD. E. FieldsRIKEN BNL Research Center, Brookhaven National Laboratory, Upton, New York 11973-5000, USA; University of New Mexico, Albuquerque, New Mexico 87131, USAM. FingerCharles University, Ovocný trh 5, Praha 1, 116 36, Prague, Czech Republic; Joint Institute for Nuclear Research, 141980 Dubna, Moscow Region, RussiaF. FleuretLaboratoire Leprince-Ringuet, Ecole Polytechnique, CNRS-IN2P3, Route de Saclay, F-91128, Palaiseau, FranceS. FokinRussian Research Center, “Kurchatov Institute”, Moscow, RussiaZ. FraenkelWeizmann Institute, Rehovot 76100, IsraelA. FranzBrookhaven National Laboratory, Upton, New York 11973-5000, USAJ. E. FrantzDepartment of Physics and Astronomy, Stony Brook University, SUNY, Stony Brook, New York 11794, USAA. D. FrawleyFlorida State University, Tallahassee, Florida 32306, USAKohei FujiwaraRIKEN, The Institute of Physical and Chemical Research, Wako, Saitama 351-0198, JapanY. FukaoKyoto University, Kyoto 606-8502, Japan; RIKEN, The Institute of Physical and Chemical Research, Wako, Saitama 351-0198, JapanT. FusayasuNagasaki Institute of Applied Science, Nagasaki-shi, Nagasaki 851-0193, JapanS. GadratLPC, Université Blaise Pascal, CNRS-IN2P3, Clermont-Fd, 63177 Aubiere Cedex, FranceI. GarishviliUniversity of Tennessee, Knoxville, Tennessee 37996, USAA. GlennUniversity of Colorado, Boulder, Colorado 80309, USAH. GongDepartment of Physics and Astronomy, Stony Brook University, SUNY, Stony Brook, New York 11794, USAM. GoninLaboratoire Leprince-Ringuet, Ecole Polytechnique, CNRS-IN2P3, Route de Saclay, F-91128, Palaiseau, FranceJ. GössetDapnia, CEA Saclay, F-91191, Gif-sur-Yvette, France
2006lv
ABI
Аннотация
The momentum distribution of electrons from decays of heavy flavor (charm and bottom) for midrapidity $|y|<0.35$ in $p+p$ collisions at $\sqrt{s}=200\text{ }\text{ }\mathrm{GeV}$ has been measured by the PHENIX experiment at the BNL Relativistic Heavy Ion Collider over the transverse momentum range $0.3<{p}_{T}<9\text{ }\text{ }\mathrm{GeV}/c$. Two independent methods have been used to determine the heavy-flavor yields, and the results are in good agreement with each other. A fixed-order-plus-next-to-leading-log perturbative QCD calculation agrees with the data within the theoretical and experimental uncertainties, with the data/theory ratio of $1.71\ifmmode\pm\else\textpm\fi{}{0.02}^{\mathrm{stat}}\ifmmode\pm\else\textpm\fi{}{0.18}^{\mathrm{sys}}$ for $0.3<{p}_{T}<9\text{ }\text{ }\mathrm{GeV}/c$. The total charm production cross section at this energy has also been deduced to be ${\ensuremath{\sigma}}_{c\overline{c}}=567\ifmmode\pm\else\textpm\fi{}{57}^{\mathrm{stat}}\ifmmode\pm\else\textpm\fi{}{193}^{\mathrm{sys}}\text{ }\text{ }\ensuremath{\mu}\mathrm{b}$.
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