Jet structure from dihadron correlations in d+Au collisions at √SNN=200 GeV

被引：60

作者：

Adler, S. S. ^{[1
]}

Afanasiev, S.

Aidala, C.

Ajitanand, N. N.

Akiba, Y.

Al-Jamel, A.

Alexander, J.

Aoki, K.

Aphecetche, L.

Armendariz, R.

Aronson, S. H.

Averbeck, R.

Awes, T. C.

Babintsev, V.

Baldisseri, A.

Barish, K. N.

Barnes, P. D.

Bassalleck, B.

Bathe, S.

Batsouli, S.

Baublis, V.

Bauer, F.

Bazilevsky, A.

Belikov, S.

Bjorndal, M. T.

Boissevain, J. G.

Borel, H.

Brooks, M. L.

Brown, D. S.

Bruner, N.

Bucher, D.

Buesching, H.

Bumazhnov, V.

Bunce, G.

Burward-Hoy, J. M.

Butsyk, S.

Camard, X.

Chand, P.

Chang, W. C.

Chernichenko, S.

Chi, C. Y.

Chiba, J.

Chiu, M.

Choi, I. J.

Choudhury, R. K.

Chujo, T.

Cianciolo, V.

Cobigo, Y.

Cole, B. A.

Comets, M. P.

机构：

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

[2] Acad Sinica, Inst Phys, Taipei 11529, Taiwan

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

[4] Bhabha Atom Res Ctr, Bombay 400085, Maharashtra, India

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

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

[7] China Inst Atom Energy, Beijing, Peoples R China

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

[9] Univ Colorado, Boulder, CO 80309 USA

[10] Nevis Labs, Irvington, NY 10533 USA

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

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

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

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

[15] Florida State Univ, Tallahassee, FL 32306 USA

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

[17] Hiroshima Univ, Higashihiroshima 7398526, Japan

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

[19] Univ Illinois, Urbana, IL 61801 USA

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

[21] Joint Inst Nucl Res, RU-141980 Dubna, Moscow, Russia

[22] KEK, High Energy Accelerator Res Org, Tsukuba, Ibaraki 3050801, Japan

[23] Hungarian Acad Sci, KFKI Res Inst Particle & Nucl Phys, 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, Lab Leprince Ringuet, IN2P3, 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 Clermont Ferrand 2, CNRS, LPC, 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] Myongji Univ, Yongin 449728, Kyonggido, South Korea

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

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

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

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

[38] Univ Paris 11, Inst Phys Nucl, CNRS, IN2P3, F-91406 Orsay, France

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

[40] Petersburg Nucl Phys Inst, RU-188300 Gatchina, Leningrad, Russia

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

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

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

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

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

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

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

[48] Univ Tennessee, Knoxville, TN 37996 USA

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

[50] Univ Tsukuba, Inst Phys, Tsukuba, Ibaraki 305, Japan

来源：

PHYSICAL REVIEW C | 2006年 / 73卷 / 05期

关键词：

D O I：

10.1103/PhysRevC.73.054903

中图分类号：

O57 [原子核物理学、高能物理学];

学科分类号：

070202 ;

摘要：

Dihadron correlations at high transverse momentum p(T) in d+Au collisions at root s(NN)=200 GeV at midrapidity are measured by the PHENIX experiment at the Relativistic Heavy Ion Collider. From these correlations, we extract several structural characteristics of jets: the root-mean-squared transverse momentum of fragmenting hadrons with respect to the jet root < j(T)(2)>, the mean sine-squared of the azimuthal angle between the jet axes < sin(2)phi(jj)>, and the number of particles produced within the dijet that are associated with a high-p(T) particle (dN/dx(E) distributions). We observe that the fragmentation characteristics of jets in d+Au collisions are very similar to those in p+p collisions and that there is little dependence on the centrality of the d+Au collision. This is consistent with the nuclear medium having little influence on the fragmentation process. Furthermore, there is no statistically significant increase in the value of < sin(2)phi(jj)> from p+p to d+Au collisions. This constrains the effect of multiple scattering that partons undergo in the cold nuclear medium before and after a hard collision.

引用

页数：27

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