Production ofKS0,K*±(892)andϕ0(1020)in minimum bias events andKS0andΛ0in jets inpp¯collisions ats=1.96  TeV

T Aaltonen,O Norniella,K Gibson,K Goulianos,S Uozumi,M E Mattson,C Vellidis,J Nett,P Giromini,J Keung,S Zucchelli,A Golossanov,P De Barbaro,L Ortolan,G P Yeh,Y D Oh,J Naganoma,J Lueck,G Lungu,T Harrington-Taber,F Azfar,T Miao,R Roser,V Thukral,S R Hahn,G Busetto,T Nigmanov,Y Sakurai,P Garosi,G Velev,G Manca,M Stancari,R E Hughes,E J Jeon,K Sliwa,S Lockwitz,G Introzzi,M Iori,M J Morello,G Chlachidze,V Rusu,P Wilson,Y Seiya,C Mesropian,G Volpi,M Rescigno,J Conway,J Asaadi,A Anastassov,S Wolbers,C Pagliarone,L Demortier,S Leo,R Forrest,D Cauz,A Semenov,H H Williams,C M Ginsburg,Y Zeng,T Bae,M Franklin,M Kambeitz,S Carrillo,J Lys,W Ashmanskas,W K Sakumoto,D Chokheli,A Mitra,M J Kim,A Artikov,T R Junk,I Oksuzian,U K Yang,V Saveliev,T Yang,V Papadimitriou,J Vizán,S Y Jun,K K Joo,C Neu,G Flanagan,M Mussini,A Loginov,D Cruz,A Manousakis-Katsikakis,B A Barnett,R St Denis,K Matera,M Shimojima,D Goldin,A Ruiz,S H Kim,L Santi,I Shreyber-Tecker,A Bhatti,J Boudreau,C Bromberg,T J Phillips,G Piacentino,D Yamato,P Marino,D Torretta,S Rolli,M Corbo,T Okusawa,L Pondrom,M Cordelli,E Thomson,D Toback,J Budagov,W C Wester,K Potamianos,F Vázquez,S H Oh,S Y Noh,A Bodek,G Pauletta,G Giurgiu,M Hare,R Culbertson,F Ptohos,P F Shepard,H Gerberich,P Lukens,A T Goshaw,A Mukherjee,S Poprocki,Q Liu,F D Snider,J A Appel,F Happacher,P E Karchin,E Gerchtein,E Gramellini,F Rimondi,C A Cox,P K Teng,R Mcnulty,T Kuhr,M Tecchio,D Stentz,A Driutti,T Tomura,S Torre,M Lancaster,A Pranko,M Dorigo,P Schlabach,P Mazzanti,C S Moon,D Glenzinski,J D Lewis,Y Funakoshi,R Madrak,A Di Canto,P Catastini,G B Yu,Y Takeuchi,D Mietlicki,J Yoh,S Donati,G Punzi,D Amidei,F Devoto,L Nodulman,M Kurata,H Miyake,K R Bland,S Errede,W Parker,R Orava,K Ebina,J Huston,D J Cox,C Plager,A Mazzacane,B Auerbach,C Grosso-Pilcher,K Tollefson,K Kondo,A Napier,W Ketchum,A B Wicklund,A Boveia,S Amerio,H S Budd,L Brigliadori,M Jones,J P Fernández Ramos,F Ruffini,Y Sudo,R Vilar,Y Kato,N Giokaris,M Hussein,B Jayatilaka,A Aurisano,W Badgett,D Lucchesi,P Murat,S Behari,B Carls,B Di Ruzza,A Elagin,F Canelli,K Takemasa,H Wolfe,B Esham,N Moggi,M Datta,A T Laasanen,T Rodriguez,P Totaro,E Palencia,N Ranjan,Jianping Han ,S Shalhout ,J S Lee,D J Kong,D Whiteson,Z Hong,J Heinrich,C Zhou,S Lammel,E Pianori,E Brücken ,Yang Yu ,D Jang,G Latino,A Kotwal ,Y C Chen,J Guimarães Da Costa ,P Wittich,A Robson,J Cuevas,I Redondo ,K Hara,J R Smith,S Leone,G Gómez ,E Schmidt ,M Ronzani,J Königsberg ,А Суханов ,V E Barnes,Jonathan L Rosner ,G Bellettini,M Kirby,M D’Onofrio,B Casal,M E Convery,J Pilot,F Ukegawa,L Marchese,P Renton,R W Moore ,A Savoy-Navarro,M Cremonesi,Andrea Di Luca ,A Zanetti ,P Palni,M Kruse,I Nakano,Th Müller ,P Maestro,P Butti,J Freeman ,V Giakoumopoulou,N Kimura,P Bartoš ,T Yoshida,J Thom,M Campanelli,J Bellinger,J Kroll,K J Knoepfel ,A Buzatu,C P Hays ,X Wu,M Casarsa,M Bauce,K Sato,V Glagolev,L Oakes,D Carlsmith,H Liu,S Moêd ,M D’Errico,T Shears,I Gorelov,A Calamba,T Liu,L Scodellaro,T Arisawa,C Paus,K Pitts,R Harr ,P Lujan,D Bortoletto,J Tang,Thomas Schwarz ,R D Field ,M Kreps,P Mehtälä ,D Benjamin,B Kilminster,T Wright,N D’Ascenzo,M Trovato,D H Kim,S Grinstein,S Camarda,G Apollinari,O González López,J Dittmann ,P Bussey,J Antos̆ ,Christopher Clarke ,A Lister,И Суслов ,M Goncharov,A Limosani,M Vidal,V Cavaliere,W-M Yao ,A Mehta,F Margaroli,S Tokár ,C Wang,M Vogel,G Chiarelli,A F Garfinkel,A Kasmi,R Lysák ,J Nachtman,F Bedeschi,S B Kim,F Sforza,S M Farrington ,M Martínez,M Cavalli‐Sforza ,C Galloni,B Blumenfeld,S Malik,J Russ,R Wallny,H Song,M Paulini,E James,Z Wu,A Bocci,B L Winer,R C Edgar ,S Giagu,M Albrow,S Hou,S M Wang,J E Kim,W H Hopkins ,K Cho,R Erbacher,K Yamamoto,A Clark,P Barria,R C Group,M Chertok,Y J Kim,J Strologas,M Shochet,T Kamon,M Deninno,A Ivanov,A Castro,H Frisch,D Waters,A Cerri,A Barbaro‐Galtieri ,K Lannon,V Sorı́n ,S Jindariani,E Lipeles,S Wilbur,H S Lee,S C Seidel ,K Hatakeyama,R Carosi,K Yorita,U Husemann,M Gold,C Vernieri,K Yi,L Ristori,F Prokoshin,A Höcker ,J S Wilson,M Herndon,Y K Kim,K Burkett,А Симоненко ,H S Kim,P Wagner,L Cerrito,F Scuri,A Annovi,G Gómez-Ceballos ,I Yu,Y Nagai,A Beretvas

doi:10.1103/physrevd.88.092005

Abstract

We report measurements of the inclusive transverse momentum pT distribution of centrally produced kshort, kstar(892), and phi(1020) mesons up to pT = 10 GeV/c in minimum-bias events, and kshort and lambda particles up to pT = 20 GeV/c in jets with transverse energy between 25 GeV and 160 GeV in pbar p collisions. The data were taken with the CDF II detector at the Fermilab Tevatron at sqrt(s) = 1.96 TeV. We find that as pT increases, the pT slopes of the three mesons (kshort, kstar, and phi) are similar, and the ratio of lambda to kshort as a function of pT in minimum-bias events becomes similar to the fairly constant ratio in jets at pT ~ 5 GeV/c. This suggests that the particles with pT >~ 5 GeV/c in minimum-bias events are from soft jets, and that the pT slope of particles in jets is insensitive to light quark flavor (u, d, or s) and to the number of valence quarks. We also find that for pT <~ 4 GeV relatively more lambda baryons are produced in minimum-bias events than in jets.

Full Text