Centrality dependence of the charged particle multiplicity near midrapidity in Au+Au collisions at √sNN=130 and 200 GeV -: art. no. 061901

被引：127

作者：

Back, BB ^{[1
]}

Ballintijn, M

Baker, MD

Barton, DS

Betts, RR

Bickley, A

Bindel, R

Budzanowski, A

Busza, W

Carroll, A

Corbo, J

Decowski, MP

Garcia, E

George, N

Gulbrandsen, K

Gushue, S

Halliwell, C

Hamblen, J

Heintzelman, G

Henderson, C

Hicks, D

Hofman, D

Hollis, RS

Holynski, R

Holzman, B

Iordanova, A

Johnson, E

Kane, J

Katzy, J

Khan, N

Kucewicz, W

Kulinich, P

Kuo, CM

Lin, WT

Manly, S

McLeod, D

Michalowski, J

Mignerey, A

Mülmenstädt, J

Nouicer, R

Olszewski, A

Pak, R

Park, IC

Pernegger, H

Rafelski, M

Rbeiz, M

Reed, C

Remsberg, LP

Reuter, M

Roland, C

机构：

[1] Argonne Natl Lab, Div Phys, Argonne, IL 60439 USA

[2] Brookhaven Natl Lab, Dept Chem, Upton, NY 11973 USA

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

[4] Inst Nucl Phys, Krakow, Poland

[5] MIT, Nucl Sci Lab, Cambridge, MA 02139 USA

[6] Natl Cent Univ, Dept Phys, Chungli 32054, Taiwan

[7] Univ Illinois, Dept Phys, Chicago, IL 60607 USA

[8] Univ Maryland, Dept Chem, College Pk, MD 20742 USA

[9] Univ Rochester, Dept Phys & Astron, Rochester, NY 14627 USA

来源：

PHYSICAL REVIEW C | 2002年 / 65卷 / 06期

基金：

美国国家科学基金会;

关键词：

D O I：

10.1103/PhysRevC.65.061901

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：

The PHOBOS experiment has measured the charged particle multiplicity at midrapidity in Au+Au collisions at roots(NN)=200 GeV as a function of the collision centrality. Results on dN(ch)/deta\(\eta\<1) divided by the number of participating nucleon pairs [N-part]/2 are presented as a function of [N-part]. As was found from similar data at roots(NN)=130 GeV, the data can be equally well described by parton saturation models and two-component fits, which include contributions that scale as N-part and the number of binary collisions N-coll. We compare the data at the two energies by means of the ratio R-200/130 of the charged particle multiplicity for the two different energies as a function of [N-part]. For events with [N-part]>00, we find that this ratio is consistent with a constant value of 1.14+/-1(stat)+/-5(syst).

引用

页数：4

共 14 条

[1] PSEUDORAPIDITY DISTRIBUTIONS OF CHARGED-PARTICLES PRODUCED IN PP INTERACTIONS AT SQUARE-ROOT-S = 630 AND 1800 GEV [J].

ABE, F ;

AMIDEI, D ;

APOLLINARI, G ;

ASCOLI, G ;

ATAC, M ;

AUCHINCLOSS, P ;

BADEN, AR ;

BARBAROGALTIERI, A ;

BARNES, VE ;

BEDESCHI, F ;

BELFORTE, S ;

BELLETTINI, G ;

BELLINGER, J ;

BENSINGER, J ;

BERETVAS, A ;

BERGE, P ;

BERTOLUCCI, S ;

BHADRA, S ;

BINKLEY, M ;

BLAIR, R ;

BLOCKER, C ;

BOFILL, J ;

BOOTH, AW ;

BRANDENBURG, G ;

BROWN, D ;

BYON, A ;

BYRUM, KL ;

CAMPBELL, M ;

CAREY, R ;

CARITHERS, W ;

CARLSMITH, D ;

CARROLL, JT ;

CASHMORE, R ;

CERVELLI, F ;

CHADWICK, K ;

CHAPIN, T ;

CHIARELLI, G ;

CHINOWSKY, W ;

CIHANGIR, S ;

CLINE, D ;

CONNOR, D ;

CONTRERAS, M ;

COOPER, J ;

CORDELLI, M ;

CURATOLO, M ;

DAY, C ;

DELFABBRO, R ;

DELLORSO, M ;

DEMORTIER, L ;

DEVLIN, T .

PHYSICAL REVIEW D, 1990, 41 (07) :2330-2333

[2] Centrality dependence of charged particle multiplicity in Au-Au collisions at √(S)NN=130 GeV [J].

Adcox, K ;

Adler, SS ;

Ajitanand, NN ;

Akiba, Y ;

Alexander, J ;

Aphecetche, L ;

Arai, Y ;

Aronson, SH ;

Averbeck, R ;

Awes, TC ;

Barish, KN ;

Barnes, PD ;

Barrette, J ;

Bassalleck, B ;

Bathe, S ;

Baublis, V ;

Bazilevsky, A ;

Belikov, S ;

Bellaiche, FG ;

Belyaev, ST ;

Bennett, MJ ;

Berdnikov, Y ;

Botelho, S ;

Brooks, ML ;

Brown, DS ;

Bruner, N ;

Bucher, D ;

Buesching, H ;

Bumazhnov, V ;

Bunce, G ;

Burward-Hoy, J ;

Butsyk, S ;

Carey, TA ;

Chand, P ;

Chang, J ;

Chang, WC ;

Chavez, LL ;

Chernichenko, S ;

Chi, CY ;

Chiba, J ;

Chiu, M ;

Choudhury, RK ;

Christ, T ;

Chujo, T ;

Chung, MS ;

Chung, P ;

Cianciolo, V ;

Cole, BA ;

D'Enterria, DG ;

David, G .

PHYSICAL REVIEW LETTERS, 2001, 86 (16) :3500-3505

[3] Charged-particle multiplicity near midrapidity in central Au plus Au collisions at √sNN=56 and 130 GeV [J].

Back, BB ;

Baker, MD ;

Barton, DS ;

Basilev, S ;

Bates, BD ;

Baum, R ;

Betts, RR ;

Bialas, A ;

Bindel, R ;

Bogucki, W ;

Budzanowski, A ;

Busza, W ;

Carroll, A ;

Ceglia, M ;

Chang, YH ;

Chen, AE ;

Coghen, T ;

Conner, C ;

Czyz, W ;

Dabrowski, B ;

Decowski, MP ;

Despet, M ;

Fita, P ;

Fitch, J ;

Friedl, M ;

Galuszka, K ;

Ganz, R ;

Garcia, E ;

George, N ;

Godlewski, J ;

Gomes, C ;

Griesmayer, E ;

Gulbrandsen, K ;

Gushue, S ;

Halik, J ;

Halliwell, C ;

Haridas, P ;

Hayes, A ;

Heintzelman, GA ;

Henderson, C ;

Hollis, R ;

Holynski, R ;

Holzman, B ;

Johnson, E ;

Kane, J ;

Katzy, J ;

Kita, W ;

Kotula, J ;

Kraner, H ;

Kucewicz, W .

PHYSICAL REVIEW LETTERS, 2000, 85 (15) :3100-3104

[4]

Back BB, 2002, PHYS REV C, V65, DOI [10.1103/PhysRevC.65.031901, 10.1103/PhysRevC.65.061901]

[5] Energy dependence of particle multiplicities in central Au+Au collisions -: art. no. 022302 [J].

Back, BB ;

Baker, MD ;

Barton, DS ;

Betts, RR ;

Bindel, R ;

Budzanowski, A ;

Busza, W ;

Carroll, A ;

Corbo, J ;

Decowski, MP ;

Garcia, E ;

George, N ;

Gulbrandsen, K ;

Gushue, S ;

Halliwell, C ;

Hamblen, J ;

Henderson, C ;

Hicks, D ;

Hofman, D ;

Hollis, RS ;

Holynski, R ;

Holzman, B ;

Iordanova, A ;

Johnson, E ;

Kane, J ;

Katzy, J ;

Khan, N ;

Kucewicz, W ;

Kulinich, P ;

Kuo, CM ;

Lin, WT ;

Manly, S ;

McLeod, D ;

Michalowski, J ;

Mignerey, A ;

Mülmenstädt, J ;

Nouicer, R ;

Olszewski, A ;

Pak, R ;

Park, IC ;

Pernegger, H ;

Rafelski, M ;

Rbeiz, M ;

Reed, C ;

Remsberg, LP ;

Reuter, M ;

Roland, C ;

Roland, G ;

Rosenberg, L ;

Sagerer, J .

PHYSICAL REVIEW LETTERS, 2002, 88 (02) :4

[6]

Back BB, 2001, PHYS REV LETT, V87, DOI 10.1103/PhysRevLett.87.102303

[7] MULTIPLICITY DISTRIBUTIONS IN NUCLEUS-NUCLEUS COLLISIONS AT HIGH-ENERGIES [J].

BIALAS, A ;

BLESZYNSKI, M ;

CZYZ, W .

NUCLEAR PHYSICS B, 1976, 111 (03) :461-476

[8] EXPERIMENTAL-STUDY OF MULTIPARTICLE PRODUCTION IN HADRON-NUCLEUS INTERACTIONS AT HIGH-ENERGY [J].

ELIAS, JE ;

BUSZA, W ;

HALLIWELL, C ;

LUCKEY, D ;

SWARTZ, P ;

VOTTA, L ;

YOUNG, C .

PHYSICAL REVIEW D, 1980, 22 (01) :13-35

[9] Saturation in diffractive deep inelastic scattering -: art. no. 114023 [J].

Golec-Biernat, K ;

Wüsthoff, M .

PHYSICAL REVIEW D, 1999, 60 (11)

[10] Hadron production in nuclear collisions at RHIC and high-density QCD [J].

Kharzeev, D ;

Nardi, M .

PHYSICS LETTERS B, 2001, 507 (1-4) :121-128

← 1 2 →