Jet properties from dihadron correlations inp+pcollisions ats=200  GeV

S S Adler,D Silvermyr,I Tserruya,S C Johnson,S Nagamiya,V Bumazhnov,E P Hartouni,N Saito,T Kawabata,M A L Leite,H Pereira,P Chand,P J Kroon,A Taranenko,A Hoover,T L Thomas,I Otterlund,P Constantin,C A Ogilvie,E M Takagui,X Camard,O Drapier,P Tarján,Y Fukao,K Oyama,T Ichihara,S Sakai,A K Purwar,K Kurita,A Al-Jamel,J G Lajoie,A Ster,N Kamihara,V Riabov,S Mioduszewski,K F Read,V Pantuev,P D Barnes,W Holzmann,R Averbeck,O Jinnouchi,M Rosati,H Tydesjö,J Zimányi,H W Van Hecke,R K Choudhury,A Pierson,S H Aronson,G Roche,L Sanfratello,M J Kweon,N Grau,M Grosse Perdekamp,G R Young,K Imai,A Malakhov,F Kajihara,E Vznuzdaev,V Dzhordzhadze,S Esumi,M Stepanov,M Konno,A Baldisseri,M Togawa,Y V Efremenko,T Matsumoto,M Inaba,C Finck,V Babintsev,C Pinkenburg,I E Yushmanov,I D Ojha,G S Kyle,Y Tsuchimoto,G C Mishra,J L Nagle,M J Leitch,K Katou,R Seto,A Devismes,B M Johnson,J P Sullivan,J C Hill,D D’Enterria,A Kiyomichi,T Chujo,S Yokkaichi,L Zolin,A Khanzadeev,K Shigaki,L Kochenda,J M Heuser,O Dietzsch,B Hong,A Kozlov,N Bruner,V Kochetkov,M Gonin,E Stenlund,H Buesching,H En’Yo,D J Kim,S S Ryu,J Tojo,E O’Brien,P L Mcgaughey,S Chernichenko,D Dutta,M Harvey,D S Brown,T E Miller,W Xie,M Ishihara,E J Desmond,M Kaneta,K Homma,T Horaguchi,J H Kang,V Cianciolo,D P Morrison,T Sugitate,M P Comets,C Zhang,A Taketani,V Peresedov,C H Kuberg,I Shein,I V Sourikova,A Bazilevsky,R Santo,M J Tannenbaum,E Kistenev,M X Liu,V Baublis,T C Awes,S Batsouli,B Bassalleck,A Soldatov,A Lebedev,V L Rykov,D Bucher,Y Cobigo,J G Boissevain,F Matathias,M Muniruzzaman,M L Purschke,R P Pisani,H Torii,M Reuter,M L Brooks,J Park,M C Mccain,I Ravinovich,R A Soltz,K Okada,C L Silva,X R Wang,A Milov,L Aphecetche,D Jouan,K Das,A Yanovich,M Chiu,G J Kunde,S Bathe,F K Wohn,I J Choi,Y Tanaka,A Deshpande,T Nakamura,J T Mitchell,B Espagnon,H.-Å Gustafsson,J L Drachenberg,P Rosnet,J S Haggerty,A Denisov,R Hobbs,H Masui,S Afanasiev,M Csanád,S Sawada,A D Frawley,J Jia,G Bunce,W C Chang,T Hachiya,M Heffner,K Tanida,S F Pate,D E Fields,V V Ikonnikov,T K Shea,D Isenhower,B Komkov,A Isupov,E Kim,J M Moss,D M Lee,Y Goto,Z Fraenkel,A Glenn,J Alexander,J Nystrand,R Kohara,N Tyurin,A V Kazantsev,T J Uam,W J Park,M Germain,J M Burward-Hoy,T K Hemmick,T Sakaguchi,W E Sondheim,L Isenhower,A Drees,D Mukhopadhyay,A Romana,F Fleuret,K S Joo,P Hidas,J P Cussonneau,Y Miake,M Velkovsky,A Durum,Y Kwon,N N Ajitanand,D Pal,M Shimomura,S Kametani,J Chiba,H J Kim,R Granier De Cassagnac,R Lacey,Y Riabov,Y Akiba,K Hasuko,H Borel,G David,E Kinney,V Papavassiliou,V Semenov,M T Bjorndal,A Franz,A Litvinenko,J Newby,Y I Makdisi,S Butsyk,K Ozawa,H Hamagaki,J Velkovska,K N Barish,R S Towell,S Gadrat,B D Fox,S Zhou,J Rak,M Issah,P W Stankus,F Bauer,D Kotchetkov,S Leckey,Y Watanabe,H Delagrange,S Takagi,S P Stoll,H Pei,V Samsonov,S Kelly,X He,R Hayano,X H Li,K Reygers,Y Mao,H Hiejima,H Okada,K S Sim,M Inuzuka,Y Le Bornec,N Willis,C L Woody,V Veszprémi,H Lim,W A Zajc,B Khachaturov,F Staley,A K Mohanty,J E Frantz,J M Qualls,Hisao Kobayashi ,S White ,S Y Fung ,T A Shibata ,B Jacak ,Y Schütz ,S Greene ,А Виноградов ,T Csörgõ ,С Беликов ,C Y ,Christian Klein-Boesing ,G B Kim ,Á Kiss ,Kazuo Aoki ,F Deák ,H Ohnìshì ,H Sato ,Jun Kikuchi ,C Maguire ,A Öskarsson ,A Nyanin ,A M Sickles ,S S.e Rosendahl ,C A Aidala ,A P.t Palounek ,J C Peng ,S Sörensen ,B Cole ,R Arméndariz ,V Manko ,G Martı́nez ,V N Tram ,J Gösset ,М А Volkov ,A Hansen ,Kazuhiro Tanaka ,Susumu Sato ,V.n Penev ,S Fokin ,Xiaopeng Zong

doi:10.1103/physrevd.74.072002

Abstract

The properties of jets produced in p+p collisions at root s=200 GeV are measured using the method of two-particle correlations. The trigger particle is a leading particle from a large transverse momentum jet while the associated particle comes from either the same jet or the away-side jet. Analysis of the angular width of the near-side peak in the correlation function determines the jet-fragmentation transverse momentum j(T). The extracted value, root =585 +/- 6(stat)+/- 15(sys) MeV/c, is constant with respect to the trigger particle transverse momentum, and comparable to the previous lower root s measurements. The width of the away-side peak is shown to be a convolution of j(T) with the fragmentation variable, z, and the partonic transverse momentum, k(T). The is determined through a combined analysis of the measured pi(0) inclusive and associated spectra using jet-fragmentation functions measured in e(+)e(-) collisions. The final extracted values of k(T) are then determined to also be independent of the trigger particle transverse momentum, over the range measured, with value of root =2.68 +/- 0.07(stat)+/- 0.34(sys) GeV/c.

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