Articles written in Pramana – Journal of Physics
Volume 60 Issue 4 April 2003 pp 639-650
A Drees K Adcox S S Adler N N Ajitanand Y Akiba J Alexander L Aphecetche Y Arai S H Aronson R Averbeck T C Awes K N Barish P D Barnes J Barrette B Bassalleck S Bathe V Baublis A Bazilevsky S Belikov F G Bellaiche S T Belyaev M J Bennett Y Berdnikov S Botelho M L Brooks D S Brown N Bruner D Bucher H Buesching V Bumazhnov G Bunce J Burward-Hoy S Butsyk T A Carey P Chand J Chang W C Chang L L Chavez S Chernichenko C Y Chi J Chiba M Chiu R K Choudhury T Christ T Chujo M S Chung P Chung V Cianciolo B A Cole D G D’Enterria G David H Delagrange A Denisov A Deshpande E J Desmond O Dietzsch B V Dinesh A Drees A Durum D Dutta K Ebisu Y V Efremenko K El Chenawi A Enokizono H En’yo S Esumi A D Frawley S -Y Fung S Garpman T K Ghosh A Glenn A L Godoi Y Goto S V Greene M Grosse Perdekamp S K Gupta W Guryn H-Å Gustafsson T Hachiya J S Haggerty H Hamagaki A G Hansen H Hara E P Hartouni R Hayano N Hayashi X He T K Hemmick J M Heuser M Hibino J C Hill D S Ho K Homma B Hong A Hoover T Ichihara K Imai M S Ippolitov M Ishihara B V Jacak W Y Jang J Jia B M Johnson S C Johnson K S Joo S Kametani J H Kang M Kann S S Kapoor S Kelly B Khachaturov A Khanzadeev J Kikuchi D J Kim H J Kim S Y Kim Y G Kim W W Kinnison E Kistenev A Kiyomichi C Klein-Boesing S Klinksiek L Kochenda V Kochetkov D Koehler T Kohama D Kotchetkov A Kozlov P J Kroon K Kurita M J Kweon Y Kwon G S Kyle R Lacey J G Lajoie J Lauret A Lebedev D M Lee M J Leitch X H Li Z Li D J Lim M X Liu X Liu Z Liu C F Maguire J Mahon Y I Makdisi V I Manko Y Mao S K Mark S Markacs G Martinez M D Marx A Masaike F Matathias T Matsumoto P L McGaughey E Melnikov M Merschmeyer F Messer M Messer Y Miake T E Miller A Milov S Mioduszewski R E Mischke G C Mishra J T Mitchell A K Mohanty D P Morrison J M Moss F Mühlbacher M Muniruzzaman J Murata S Nagamiya Y Nagasaka J L Nagle Y Nakada B K Nandi J Newby L Nikkinen P Nilsson S Nishimura A S Nyanin J Nystrand E O’Brien C A Ogilvie H Ohnishi I D Ojha M Ono V Onuchin A Oskarsson L Österman I Otterlund K Oyama L Paffrath A P T Palounek V S Pantuev V Papavassiliou S F Pate T Peitzmann A N Petridis C Pinkenburg R P Pisani P Pitukhin F Plasil M Pollack K Pope M L Purschke I Ravinovich K F Read K Reygers V Riabov Y Riabov M Rosati A A Rose S S Ryu N Saito A Sakaguchi T Sakaguchi H Sako T Sakuma V Samsonov T C Sangster R Santo H D Sato S Sato S Sawada B R Schlei Y Schutz V Semenov R Seto T K Shea I Shein T -A Shibata K Shigaki T Shiina Y H Shin I G Sibiriak D Silvermyr K S Sim J Simon-Gillo C P Singh V Singh M Sivertz A Soldatov R A Soltz S Sorensen P W Stankus N Starinsky P Steinberg E Stenlund A Ster S P Stoll M Sugioka T Sugitate J P Sullivan Y Sumi Z Sun M Suzuki E M Takagui A Taketani M Tamai K H Tanaka Y Tanaka E Taniguchi M J Tannenbaum J Thomas J H Thomas T L Thomas W Tian J Tojo H Torii R S Towell I Tserruya H Tsuruoka A A Tsvetkov S K Tuli H Tydesjö N Tyurin T Ushiroda H W van Hecke C Velissaris J Velkovska M Velkovsky A A Vinogradov M A Volkov A Vorobyov E Vznuzdaev H Wang Y Watanabe S N White C Witzig F K Wohn C L Woody W Xie K Yagi S Yokkaichi G R Young I E Yushmanov W A Zajc Z Zhang S Zhou
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