Open charm yields in d+Au collisions at √sNN=200 GeV -: art. no. 062301

被引:183
作者
Adams, J [1 ]
Aggarwal, MM
Ahammed, Z
Amonett, J
Anderson, BD
Arkhipkin, D
Averichev, GS
Badyal, SK
Bai, Y
Balewski, J
Barannikova, O
Barnby, LS
Baudot, J
Bekele, S
Belaga, VV
Bellwied, R
Berger, J
Bezverkhny, BI
Bharadwaj, S
Bhasin, A
Bhati, AK
Bhatia, VS
Bichsel, H
Billmeier, A
Bland, LC
Blyth, CO
Bonner, BE
Botje, M
Boucham, A
Brandin, AV
Bravar, A
Bystersky, M
Cadman, RV
Cai, XZ
Caines, H
Calderón de la Barca Sánchez, M
Castillo, J
Cebra, D
Chajecki, Z
Chaloupka, P
Chattopadhyay, S
Chen, HF
Chen, Y
Cheng, J
Cherney, M
Chikanian, A
Christie, W
Coffin, JP
Cormier, TM
Cramer, JG
机构
[1] Univ Birmingham, Birmingham B15 2TT, W Midlands, England
[2] Argonne Natl Lab, Argonne, IL 60439 USA
[3] Univ Bern, CH-3012 Bern, Switzerland
[4] Brookhaven Natl Lab, Upton, NY 11973 USA
[5] CALTECH, Pasadena, CA 91125 USA
[6] Univ Calif Berkeley, Berkeley, CA 94720 USA
[7] Univ Calif Davis, Davis, CA 95616 USA
[8] Univ Calif Los Angeles, Los Angeles, CA 90095 USA
[9] Carnegie Mellon Univ, Pittsburgh, PA 15213 USA
[10] Creighton Univ, Omaha, NE 68178 USA
[11] AS CR, Nucl Phys Inst, Rez 25068, Czech Republic
[12] Joint Inst Nucl Res Dubna, Lab High Energy, Dubna, Russia
[13] Joint Inst Nucl Res Dubna, Particle Phys Lab, Dubna, Russia
[14] Goethe Univ Frankfurt, D-6000 Frankfurt, Germany
[15] Inst Phys, Bhubaneswar 751005, Orissa, India
[16] Indian Inst Technol, Bombay 400076, Maharashtra, India
[17] Indiana Univ, Bloomington, IN 47408 USA
[18] Inst Rech Subatom, Strasbourg, France
[19] Univ Jammu, Jammu 180001, India
[20] Kent State Univ, Kent, OH 44242 USA
[21] Univ Calif Berkeley, Lawrence Berkeley Lab, Berkeley, CA 94720 USA
[22] MIT, Cambridge, MA 02139 USA
[23] Max Planck Inst Phys & Astrophys, D-80805 Munich, Germany
[24] Michigan State Univ, E Lansing, MI 48824 USA
[25] CUNY City Coll, New York, NY 10031 USA
[26] NIKHEF H, NL-1009 DB Amsterdam, Netherlands
[27] Ohio State Univ, Columbus, OH 43210 USA
[28] Panjab Univ, Chandigarh 160014, India
[29] Penn State Univ, University Pk, PA 16802 USA
[30] Inst High Energy Phys, Protvino, Russia
[31] Purdue Univ, W Lafayette, IN 47907 USA
[32] Univ Rajasthan, Jaipur 302004, Rajasthan, India
[33] Rice Univ, Houston, TX 77251 USA
[34] Univ Sao Paulo, BR-05508 Sao Paulo, Brazil
[35] Univ Sci & Technol China, Anhui 230027, Peoples R China
[36] Shanghai Inst Appl Phys, Shanghai 201800, Peoples R China
[37] SUBATECH, Nantes, France
[38] Texas A&M Univ, College Stn, TX 77843 USA
[39] Univ Texas, Austin, TX 78712 USA
[40] Tsinghua Univ, Beijing 100084, Peoples R China
[41] Valparaiso Univ, Valparaiso, IN 46383 USA
[42] Ctr Variable Energy Cyclotron, Kolkata 700064, W Bengal, India
[43] Warsaw Univ Technol, Warsaw, Poland
[44] Univ Washington, Seattle, WA 98195 USA
[45] Wayne State Univ, Detroit, MI 48201 USA
[46] HZNU, CCNU, Inst Particle Phys, Wuhan 430079, Peoples R China
[47] Yale Univ, New Haven, CT 06520 USA
[48] Univ Zagreb, HR-10002 Zagreb, Croatia
关键词
D O I
10.1103/PhysRevLett.94.062301
中图分类号
O4 [物理学];
学科分类号
0702 ;
摘要
Midrapidity open charm spectra from direct reconstruction of D-0((D) over bar (0))-->K(-/+)pi(+/-) in d(+)Au collisions and indirect electron-positron measurements via charm semileptonic decays in p+p and d+Au collisions at roots(NN)=200 GeV are reported. The D-0((D) over bar (0)) spectrum covers a transverse momentum (p(T)) range of 0.1< p(T) < 3 GeV/c, whereas the electron spectra cover a range of 1< p(T) < 4 GeV/c. The electron spectra show approximate binary collision scaling between p+p and d+Au collisions. From these two independent analyses, the differential cross section per nucleon-nucleon binary interaction at midrapidity for open charm production from d+Au collisions at BNL RHIC is dsigma(c)((c)) over bar (NN)/dy=0.30+/-0.04(stat)+/-0.09(syst) mb. The results are compared to theoretical calculations. Implications for charmonium results in A+A collisions are discussed.
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