Energy and centrality dependence of (p)over-bar and p production and the (Λ)over-bar/(p)over-bar ratio in Pb plus Pb collisions between 20A GeV and 158A GeV -: art. no. 044910

被引：137

作者：

Alt, C ^{[1
]}

Anticic, T

Baatar, B

Barna, D

Bartke, J

Betev, L

Bialkowska, H

Blume, C

Boimska, B

Botje, M

Bracinik, J

Bramm, R

Buncic, P

Cerny, V

Christakoglou, P

Chvala, O

Cramer, JG

Csató, P

Dinkelaker, P

Eckardt, V

Flierl, D

Fodor, Z

Foka, P

Friese, V

Gál, J

Gazdzicki, M

Genchev, V

Georgopoulos, G

Gladysz, E

Grebieszkow, K

Hegyi, S

Höhne, C

Kadija, K

Karev, A

Kliemant, M

Kniege, S

Kolesnikov, VI

Kornas, E

Korus, R

Kowalski, M

Kraus, I

Kreps, M

Laslo, A

van Leeuwen, M

Lévai, P

Litov, L

Lungwitz, B

Makariev, M

Malakhov, AI

Mateev, M

机构：

[1] Goethe Univ Frankfurt, Fachbereich Phys, D-6000 Frankfurt, Germany

[2] NIKHEF, Amsterdam, Netherlands

[3] Univ Athens, Dept Phys, Athens, Greece

[4] Comenius Univ, Bratislava, Slovakia

[5] KFKI Res Inst Particle & Nucl Phys, Budapest, Hungary

[6] MIT, Cambridge, MA 02139 USA

[7] Inst Nucl Phys, Krakow, Poland

[8] GSI Darmstadt, Darmstadt, Germany

[9] Joint Inst Nucl Res, Dubna, Russia

[10] CERN, Geneva, Switzerland

[11] Jan Kochanowski Univ Humanities & Sci, Inst Phys, Kielce, Poland

[12] Univ Marburg, Fachbereich Phys, D-3550 Marburg, Germany

[13] Max Planck Inst Phys & Astrophys, D-80805 Munich, Germany

[14] Charles Univ Prague, Inst Nucl & Particle Phys, Prague, Czech Republic

[15] Pusan Natl Univ, Dept Phys, Pusan 609735, South Korea

[16] Univ Washington, Nucl Phys Lab, Seattle, WA 98195 USA

[17] Univ Sofia, Dept Atom Phys, BU-1126 Sofia, Bulgaria

[18] Inst Nucl Energy Res, Sofia, Bulgaria

[19] Inst Nucl Studies, PL-00681 Warsaw, Poland

[20] Univ Warsaw, Inst Expt Phys, Warsaw, Poland

[21] Rudjer Boskovic Inst, Zagreb, Croatia

来源：

PHYSICAL REVIEW C | 2006年 / 73卷 / 04期

关键词：

D O I：

10.1103/PhysRevC.73.044910

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 transverse mass m(t) distributions for antiprotons are measured at midrapidity for minimum bias Pb+Pb collisions at 158A GeV and for central Pb+Pb collisions at 20A, 30A, 40A, and 80A GeV beam energies in the fixed target experiment NA49 at the CERN SPS. The rapidity density dn/dy, inverse slope parameter T, and mean transverse mass < m(t)> derived from the m(t) distributions are studied as a function of the incident energy and the collision centrality and compared to the relevant data on proton production. The shapes of the m(t) distributions of (p) over bar and p are very similar. The ratios of the particle yields, (p) over bar /p and (p) over bar/(Lambda) over bar, are also analyzed. The (p) over bar /p ratio exhibits an increase with decreasing centrality and a steep rise with increasing beam energy. The (Lambda) over bar/(Lambda) over bar ratio increases beyond unity with decreasing beam energy.

引用

页数：10

共 67 条

[1] Identified particle distributions in pp and Au+Au collisions at √sNN=200 GeV -: art. no. 112301 [J].

Adams, J ;

Adler, C ;

Aggarwal, MM ;

Ahammed, Z ;

Amonett, J ;

Anderson, BD ;

Anderson, M ;

Arkhipkin, D ;

Averichev, GS ;

Badyal, SK ;

Balewski, J ;

Barannikova, O ;

Barnby, LS ;

Baudot, J ;

Bekele, S ;

Belaga, VV ;

Bellwied, R ;

Berger, J ;

Bezverkhny, BI ;

Bhardwaj, S ;

Bhaskar, P ;

Bhati, AK ;

Bichsel, H ;

Billmeier, A ;

Bland, LC ;

Blyth, CO ;

Bonner, BE ;

Botje, M ;

Boucham, A ;

Brandin, A ;

Bravar, A ;

Cadman, RV ;

Cai, XZ ;

Caines, H ;

Sánchez, MCD ;

Carroll, J ;

Castillo, J ;

Castro, M ;

Cebra, D ;

Chaloupka, P ;

Chattopadhyay, S ;

Chen, HF ;

Chen, Y ;

Chernenko, SP ;

Cherney, M ;

Chikanian, A ;

Choi, B ;

Christie, W ;

Coffin, JP ;

Cormier, TM .

PHYSICAL REVIEW LETTERS, 2004, 92 (11) :112301-1

[2] Single identified hadron spectra from √sNN=130 GeVAu+Au collisions -: art. no. 024904 [J].

Adcox, K ;

Adler, SS ;

Ajitanand, NN ;

Akiba, Y ;

Alexander, J ;

Aphecetche, L ;

Arai, Y ;

Aronson, SH ;

Averbeck, R ;

Awes, TC ;

Barish, KN ;

Bames, RD ;

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, JM ;

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 C, 2004, 69 (02) :249041-2490429

[3] Measurement of Λ and (Λ)over-bar particles in Au plus Au collisions at √sNN=130 GeV -: art. no. 092302 [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, 2002, 89 (09) :923021-923026

[4] Midrapidity antiproton-to-proton ratio from Au+Au collisions at √sNN=130 GeV [J].

Adler, C ;

Ahammed, Z ;

Allgower, C ;

Anderson, M ;

Averichev, GS ;

Balewski, J ;

Barannikova, O ;

Barnby, LS ;

Baudot, J ;

Bekele, S ;

Belaga, VV ;

Bellwied, R ;

Berger, J ;

Bichsel, H ;

Bland, LC ;

Blyth, CO ;

Bonner, BE ;

Bossingham, R ;

Boucham, A ;

Brandin, A ;

Caines, H ;

Sánchez, MCD ;

Cardenas, A ;

Carroll, J ;

Castillo, J ;

Castro, M ;

Cebra, D ;

Chattopadhyay, S ;

Chen, ML ;

Chen, Y ;

Chernenko, SP ;

Cherney, M ;

Chikanian, A ;

Choi, B ;

Christie, W ;

Coffin, JP ;

Conin, L ;

Cormier, TM ;

Cramer, JG ;

Crawford, HJ ;

DeMello, M ;

Deng, WS ;

Derevschikov, AA ;

Didenko, L ;

Draper, JE ;

Dunin, VB ;

Dunlop, JC ;

Eckardt, V ;

Efimov, LG ;

Emelianov, V .

PHYSICAL REVIEW LETTERS, 2001, 86 (21) :4778-4782

[5] Identified charged particle spectra and yields in Au plus Au collisions at √SNN=200 GeV -: art. no. 034909 [J].

Adler, SS ;

Afanasiev, S ;

Aidala, C ;

Ajitanand, NN ;

Akiba, Y ;

Alexander, J ;

Amirikas, R ;

Aphecetche, L ;

Aronson, SH ;

Averbeck, R ;

Awes, TC ;

Azmoun, R ;

Babintsev, V ;

Baldisseri, A ;

Barish, KN ;

Barnes, PD ;

Bassalleck, B ;

Bathe, S ;

Batsouli, S ;

Baublis, V ;

Bazilevsky, A ;

Belikov, S ;

Berdnikov, Y ;

Bhagavatula, S ;

Boissevain, JG ;

Borel, H ;

Borenstein, S ;

Brooks, ML ;

Brown, DS ;

Bruner, N ;

Bucher, D ;

Buesching, H ;

Bumazhnov, V ;

Bunce, G ;

Burward-Hoy, JM ;

Butsyk, S ;

Camard, X ;

Chai, JS ;

Chand, P ;

Chang, WC ;

Chernichenko, S ;

Chi, CY ;

Chiba, J ;

Chiu, M ;

Choi, IJ ;

Choi, J ;

Choudhury, RK ;

Chujo, T ;

Cianciolo, V ;

Cobigo, Y .

PHYSICAL REVIEW C, 2004, 69 (03) :034909-1

[6] The NA49 large acceptance hadron detector [J].

Afanasiev, S ;

Alber, T ;

Appelshäuser, H ;

Bächler, J ;

Barna, D ;

Barnby, LS ;

Bartke, J ;

Barton, RA ;

Betev, L ;

Bialkowska, H ;

Bieser, F ;

Billmeier, A ;

Blyth, CO ;

Bock, R ;

Bormann, C ;

Bracinik, J ;

Brady, FP ;

Brockmann, R ;

Brun, R ;

Buncic, P ;

Caines, HL ;

Cebra, D ;

Cooper, GE ;

Cramer, JG ;

Csato, P ;

Cyprian, M ;

Dunn, J ;

Eckardt, V ;

Eckhardt, F ;

Empl, T ;

Eschke, J ;

Ferguson, MI ;

Fessler, H ;

Fischer, HG ;

Flierl, D ;

Fodor, Z ;

Frankenfeld, U ;

Foka, P ;

Freund, P ;

Friese, V ;

Ftacnik, J ;

Fuchs, M ;

Gabler, F ;

Gal, J ;

Ganz, R ;

Gazdzicki, M ;

Gladysz, E ;

Grebieszkow, J ;

Günther, J ;

Harris, JW .

NUCLEAR INSTRUMENTS & METHODS IN PHYSICS RESEARCH SECTION A-ACCELERATORS SPECTROMETERS DETECTORS AND ASSOCIATED EQUIPMENT, 1999, 430 (2-3) :210-244

[7] Energy dependence of pion and kaon production in central Pb plus Pb collisions -: art. no. 054902 [J].

Afanasiev, SV ;

Anticic, T ;

Barna, D ;

Bartke, J ;

Barton, RA ;

Behler, M ;

Betev, L ;

Bialkowska, H ;

Billmeier, A ;

Blume, C ;

Blyth, CO ;

Boimska, B ;

Botje, M ;

Bracinik, J ;

Bramm, R ;

Brun, R ;

Buncic, P ;

Cerny, V ;

Cramer, JG ;

Csató, P ;

Dinkelaker, P ;

Eckhardt, V ;

Filip, P ;

Fodor, Z ;

Foka, P ;

Freund, P ;

Friese, V ;

Gál, J ;

Gazdzicki, M ;

Georgopoulos, G ;

Gladysz, E ;

Hegyi, S ;

Höhne, C ;

Igo, G ;

Jones, PG ;

Kadija, K ;

Karev, A ;

Kolesnikov, VI ;

Kollegger, T ;

Kowalski, M ;

Kraus, I ;

Kreps, M ;

van Leeuwen, M ;

Lévai, P ;

Malakhov, AI ;

Margetis, S ;

Markert, C ;

Mayes, BW ;

Melkumov, GL ;

Mischke, A .

PHYSICAL REVIEW C, 2002, 66 (05)

[8] Antiproton production in Au+Au collisions at 11.7A GeV/c [J].

Ahle, L ;

Akiba, Y ;

Ashktorab, K ;

Baker, MD ;

Beavis, D ;

Britt, HC ;

Chang, J ;

Chasman, C ;

Chen, Z ;

Chi, CY ;

Chu, YY ;

Cianciolo, V ;

Cole, BA ;

Crawford, HJ ;

Cumming, JB ;

Debbe, R ;

Dunlop, JC ;

Eldredge, W ;

Engelage, J ;

Fung, SY ;

Garcia, E ;

Gushue, S ;

Hamagaki, H ;

Hansen, LF ;

Hayano, RS ;

Heintzelman, G ;

Judd, E ;

Kang, J ;

Kim, EJ ;

Kumagai, A ;

Kurita, K ;

Lee, JH ;

Luke, J ;

Miake, Y ;

Mignerey, A ;

Moskowitz, B ;

Moulson, M ;

Muentz, C ;

Nagamiya, S ;

Namboodiri, MN ;

Ogilvie, CA ;

Olness, J ;

Remsberg, LP ;

Sako, H ;

Sangster, TC ;

Seto, R ;

Shea, J ;

Shigaki, K ;

Soltz, R ;

Steadman, SG .

PHYSICAL REVIEW LETTERS, 1998, 81 (13) :2650-2654

[9]

Alber T, 1996, PHYS LETT B, V366, P56, DOI 10.1016/0370-2693(95)01342-3

[10]

Alt C, 2005, PHYS REV LETT, V94, DOI [10.1103/PhysRevLett.94.052301, 10.1103/PhysRevLett.94.192301]

← 1 2 3 4 5 6 7 →