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

被引：182

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

来源：

PHYSICAL REVIEW LETTERS | 2005年 / 94卷 / 06期

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.

引用

页数：6

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