Articles written in Pramana – Journal of Physics
Volume 60 Issue 4 April 2003 pp 725-737
Peter Seyboth S V Afanasiev T Anticic D Barna J Bartke R A Barton L Betev H Bialkowska A Billmeier C Blume C O Blyth B Boimska M Botje J Bracinik R Bramm R Brun P Bunci V Cerny O Chvala J G Cramer P Csato P Dinkelaker V Eckardt P Filip H G Fischer Z Fodor P Foka P Freund V Friese J Gal M Gaździcki G Georgopoulos E Gladysz S Hegyi C Hohne P G Jones K Kadija A Karev V I Kolesnikov T Kollegger M Kowalski I Kraus M Kreps M van Leeuwen P Levai A I Malakhov C Markert B WMayes G L Melkumov A Mischke J Molnar J M Nelson G Palla A D Panagiotou K Perl A Petridis M Pikna L Pinsky F Puhlhofer J G Reid R Renfordt W Retyk C Roland G Roland A Rybicki A Sandoval H Sann N Schmitz Peter Seyboth F Sikler B Sitar E Skrzypczak G T A Squier R Stock H Strobele T Susa I Szentpetery J Sziklai T A Trainor D Varga M Vassiliou G I Veres G Vesztergombi D Vranic S Wenig A Wetzler I KYoo J Zaranek J Zimanyi
Experiment NA49 at the CERN SPS uses a large acceptance detector for a systematic study of particle yields and correlations in nucleus-nucleus, nucleon-nucleus and nucleon-nucleon collisions. Preliminary results for Pb+Pb collisions at 40, 80 and 158 A⋅GeV beam energy shown and compared to measurements at lower and higher energies.
Volume 60 Issue 5 May 2003 pp 921-931
Birger Back M D Baker D S Barton R R Betts R Bindel A Budzanowski W Busza A Carroll J Corbo M P Decowski E Garcia N George K Gulbrandsen S Gushue C Halliwell J Hamblen G A Heintzelman C Henderson D Hicks D J Hofman R Hollis R Holyńiski B Holzman A Iordanova E Johnson J L Kane J Katzy N Khan W Kucewicz P Kulinich C M Kuo W T Lin S Manly D McLeod J Michalowski A C Mignerey J Mülmenstädt R Nouicer A Olszewski R Pak I C Park H Pernegger M Rafelski M Rbeiz C Reed L P Remsberg M Reuter C Roland G Roland L Rosenberg J Sagerer P Sarin P Sawicki W Skulski S G Steadman P Steinberg G S F Stephans M Stodulski A Sukhanov J-L Tang R Teng A Trzupek C Vale G J van Nieuwenhuizen R Verdier B Wadsworth F L H Wolfs B Wosiek K Woźniak A H Wuosmaa B Wyslouch
The PHOBOS detector has been used to study Au + Au collisions at√sNN = 56,130, and 200 GeV Several global observables have been measured and the results are compared with theoretical models. These observables include the charged-particle multiplicity measured as a function of beam energy, pseudo-rapidity, and centrality of the collision. A unique feature of the PHOBOS detector is its almost complete angular coverage such that these quantities can be studied over a pseudo-rapidity interval of |η|≤5.4. This allows for an almost complete integration of the total charged particle yield, which is found to be about Nchtot= 4200 ±470 at √sNN = 130 GeV and Nchtot = 5300 ±530 at √sNN = 200 GeV.
The ratio of anti-particles to particles emitted in the mid-rapidity region has also been measured using the PHOBOS magnetic spectrometer. Of particular interest is the ratio of anti-protons to protons in the mid-rapidity region, which was found to be (i.e.921-1) at √sNN = 130 GeV. This high value suggests that an almost baryon-free region has been produced in the collisions.
Volume 61 Issue 5 November 2003 pp 865-876
Alan S Carroll B B Back M D Baker D S Barton R R Betts M Ballintijn A A Bickley R Bindel A Budzanowski W Busza A Carroll M P Decowski E García N George K Gulbrandsen S Gushue C Halliwell J Hamblen G A Heintzelman C Henderson D J Hofman R S Hollis R Hoyłyński B Holzman A Iordanova E Johnson J L Kane J Katzy N Khan W Kucewicz P Kulinich C M Kuo W T Lin S Manly D McLeod J Michałowski A C Mignerey R Nouicer A Olszewski R Pak I C Park H Pernegger C Reed L P Remsberg M Reuter C Roland G Roland L Rosenberg J Sagerer P Sarin P Sawicki W Skulski S G Steadman P Steinberg G S F Stephans M Stodulski A Sukhanov J-L Tang R Teng A Trzupek C Vale G J van Nieuwenhuizen R Verdier B Wadsworth F L H Wolfs B Wosiek K Woźniak A H Wuosmaa B Wysłouch
Particle production in Au+Au collisions has been measured in the PHOBOS experiment at RHIC for a range of collision energies for a large span of pseudorapidities, |η| < 5.4. Three empirical observations have emerged from this data set which require theoretical examination. First, there is clear evidence of limiting fragmentation. Namely, particle production in central Au + Au collisions, when expressed as d
Volume 93 | Issue 6
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