Measurement of High-pT single electrons from heavy-flavor decays in p plus p collisions at √s=200 GeV

被引：207

作者：

Adare, A. ^{[1
]}

Afanasiev, S.

Aidala, C.

Ajitanand, N. N.

Akiba, Y.

Al-Bataineh, H.

Alexander, J.

Aoki, K.

Aphecetche, L.

Armendariz, R.

Aronson, S. H.

Asai, J.

Atomssa, E. T.

Averbeck, R.

Awes, T. C.

Azmoun, B.

Babintsev, V.

Baksay, G.

Baksay, L.

Baldisseri, A.

Barish, K. N.

Barnes, P. D.

Bassalleck, B.

Bathe, S.

Batsouli, S.

Baublis, V.

Bazilevsky, A.

Belikov, S.

Bennet, R.

Berdnikov, Y.

Bickley, A. A.

Boissevain, J. G.

Borel, H.

Boyle, K.

Brooks, M. L.

Buesching, H.

Bumazhnov, V.

Bunce, G.

Butsyk, S.

Campbell, S.

Chang, B. S.

Charvet, J. L.

Chernichenko, S.

Chiba, J.

Chi, C. Y.

Chiu, M.

Choi, I. J.

Chujo, T.

Chung, P.

Churyn, A.

机构：

[1] Abilene Christian Univ, Abilene, TX 79699 USA

[2] Banaras Hindu Univ, Dept Phys, Varanasi 221005, Uttar Pradesh, India

[3] Brookhaven Natl Lab, Upton, NY 11973 USA

[4] Univ Calif Riverside, Riverside, CA 92521 USA

[5] Charles Univ Prague, CZ-11636 Prague, Czech Republic

[6] CIAE, Beijing, Peoples R China

[7] Univ Tokyo, Ctr Nucl Study, Grad Sch Sci, Tokyo 1130033, Japan

[8] Univ Colorado, Boulder, CO 80309 USA

[9] USA & Nevis Labs, New York, NY 10533 USA

[10] Columbia Univ, New York, NY 10027 USA

[11] Czech Tech Univ, Prague 16636 6, Czech Republic

[12] CEA Saclay, Dapnia, F-91191 Gif Sur Yvette, France

[13] Debrecen Univ, H-4010 Debrecen, Hungary

[14] Eotvos Lorand Univ, ELTE, H-1117 Budapest, Hungary

[15] Florida Inst Technol, Melbourne, FL 32901 USA

[16] Georgia State Univ, Atlanta, GA 30303 USA

[17] Hiroshima Univ, Hiroshima, Japan

[18] State Res Ctr Russian Fed, Inst High Energy Phys, IHEP Protvino, Protvino 142281, Russia

[19] Univ Illinois, Urbana, IL 61801 USA

[20] Acad Sci Czech Republ, Inst Phys, Prague 18221 8, Czech Republic

[21] Iowa State Univ, Ames, IA 50011 USA

[22] Joint Inst Nucl Res, Moscow 141980, Russia

[23] Hungarian Acad Sci, RMKI, KFKI, MTA,KFKI,Res Inst Particle & Nucl Res, H-1525 Budapest, Hungary

[24] Korea Univ, Seoul 136701, South Korea

[25] Russian Res Ctr, Kurchatov Inst, Moscow, Russia

[26] Kyoto Univ, Kyoto 6068502, Japan

[27] Ecole Polytech, CNRS, IN2P3, Lab Leprince Ringuet, F-91128 Palaiseau, France

[28] Lawrence Livermore Natl Lab, Livermore, CA 94550 USA

[29] Los Alamos Natl Lab, Los Alamos, NM 87545 USA

[30] Univ Blaise Pascal, LPC, CNRS, IN2P3, F-63177 Clermont Ferrand, France

[31] Lund Univ, Dept Phys, SE-22100 Lund, Sweden

[32] Univ Munster, Inst Kernphys, D-48149 Munster, Germany

[33] Nagasaki Inst Appl Sci, Nagasaki 8510193, Japan

[34] Univ New Mexico, Albuquerque, NM 87131 USA

[35] New Mexico State Univ, Las Cruces, NM 88003 USA

[36] Oak Ridge Natl Lab, Oak Ridge, TN 37831 USA

[37] Univ Paris Sud, IPN Orsay, F-91406 Orsay, France

[38] Peking Univ, Beijing 100871, Peoples R China

[39] Petersburg Nucl Phys Inst, PNPI, St Petersburg 188300, Russia

[40] RIKEN, Inst Phys & Chem Res, Wako, Saitama 3510198, Japan

[41] Brookhaven Natl Lab, BNL Res Ctr, RIKEN, Upton, NY 11973 USA

[42] Rikkyo Univ, Dept Phys, Tokyo 1718501, Japan

[43] St Petersburg Polytech Univ, St Petersburg, Russia

[44] Univ Sao Paulo, Inst Fis, BR-05315970 Sao Paulo, Brazil

[45] Seoul Natl Univ, Syst Elect Lab, Seoul, South Korea

[46] SUNY Stony Brook, Dept Chem, Stony Brook, NY 11794 USA

[47] SUNY Stony Brook, Dept Phys & Astron, Stony Brook, NY 11794 USA

[48] Univ Nantes, CNRS, IN2P3, SUBATECH,Ecole Mines Nantes, F-44307 Nantes, France

[49] Univ Tennessee, Knoxville, TN 37996 USA

[50] Tokyo Inst Technol, Dept Phys, Tokyo 1528551, Japan

来源：

PHYSICAL REVIEW LETTERS | 2006年 / 97卷 / 25期

关键词：

D O I：

10.1103/PhysRevLett.97.252002

中图分类号：

O4 [物理学];

学科分类号：

0702 ;

摘要：

The momentum distribution of electrons from decays of heavy flavor (charm and bottom) for midrapidity |y|< 0.35 in p+p collisions at s=200 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 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 +/- 0.02(stat)+/- 0.18(sys) for 0.3 < p(T)< 9 GeV/c. The total charm production cross section at this energy has also been deduced to be sigma(cc)=567 +/- 57(stat)+/- 193(sys) mu b.

引用

页数：6

共 16 条

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