Strange Particle Production in $p+p$ Collisions at $\sqrt{s}$= 200GeV [electronic resource].

Published: Upton, N.Y. : Brookhaven National Laboratory, 2006.
Oak Ridge, Tenn. : Distributed by the Office of Scientific and Technical Information, U.S. Dept. of Energy.
Additional Creators: Brookhaven National Laboratory and United States. Department of Energy. Office of Scientific and Technical Information

Access Online

www.osti.gov

Availability

Finding items...

Restrictions on Access

Free-to-read Unrestricted online access

Summary

We present strange particle spectra and yields measured atmid-rapidity in sqrt text s=200 GeV proton-proton (p+p) collisions atRHIC. We find that the previously observed universal transverse mass(mathrm mT \equiv\sqrt mathrm p_T 2+\mathrm m2) scaling of hadronproduction in p+p collisions seems to break down at higher \mt and thatthere is a difference in the shape of the \mt spectrum between baryonsand mesons. We observe mid-rapidity anti-baryon to baryon ratios nearunity for Lambda and Xi baryons and no dependence of the ratio ontransverse momentum, indicating that our data do not yet reach thequark-jet dominated region. We show the dependence of the mean transversemomentum (\mpt) on measured charged particle multiplicity and on particlemass and infer that these trends are consistent with gluon-jet dominatedparticle production. The data are compared to previous measurements fromCERN-SPS, ISR and FNAL experiments and to Leading Order (LO) and Next toLeading order (NLO) string fragmentation model predictions. We infer fromthese comparisons that the spectral shapes and particle yields from $p+p$collisions at RHIC energies have large contributions from gluon jetsrather than quark jets.

Report Numbers

E 1.99:lbnl--63640
lbnl--63640

Other Subject(s)

Note

Published through SciTech Connect.
07/31/2006.
"lbnl--63640"
Physical Review C 75 FT
Harris, J.W.; Anderson, M.; Jacobs,P.; Adams, J.; Klein,S.R.; Jones, P.G.; Kaplan, M.; Chen, J.H.; Edwards, W.R.; Cramer, J.G.; Anderson, B.D.; Dunlop, J.C.; Hirsch, A.; Christie, W.; Bichsel, H.; Hughes, E.W.; Henry, T.W.; Jacobs, W.W.; Das, S.; Hoffman, A.M.; Huang, S.L.; Cheng, J.; Bonner, B.E.; Gonzalez, J.S.; Chen,H.F.; Das, D.; Fu, J.; Crawford,H.J.; Huang, H.Z.; He, W.; Heinz, M.; Igo, G.; Jiang, H.; Gagliardi, C.A.; Bravar, A.; Kim, B.C.; Dong, W.J.; Guertin, S.M.; Draper, J.E.; Chattopadhyay, S.; Keane, D.; Cadman, R.V.; Grosnick, D.; Koetke, D.D.; Bai,Y.; Cai,X.Z.; Caines, H.; Ghosh, P.; Eppley, G.; Fisyak, Y.; DePhillips, M.; Belaga, V.V.; Erazmus, B.; Hamed, A.; Hoffmann, G.W.; Khodyrev, V.Yu.; Bhardwaj, S.; Guo,Y.; Coffin, J.P.; Bland, L.C.; Cherney, M.; Humanic, T.J.; Cebra, D.; Hjort, E.; Gupta,N.; Bellwied, R.; Cormier, T.M.; Averichev, G.S.; Chikanian, A.; Horner, M.J.; Kang, K.; Ghazikhanian, V.; Filip, P.; Hallman, T.J.; Kisiel, A.; Eckardt, V.; Aggarwal, M.M.; Bhasin, A.; Dedovich, T.G.; Didenko, L.; Dong, X.; Engelage, J.; Derevschikov, A.A.; Fachini, P.; Bhati, A.K.; Dutta Mazumdar, M.R.; Ganti,M.S.; Judd, E.G.; Kabana, S.; Grebenyuk, O.; Dunin, V.B.; Efimov,L.G.; Emelianov, V.; Ahammed, Z.; Filimonov, K.; Gaillard, L.; Barnby, L.S.; Barannikova, O.; Castillo, J.; Balewski, J.; Dogra, S.M.; de Moura, M.M.; Baudot, J.; Bystersky, M.; Bouchet, J.; Bielcik, J.; Du, F.; Fine, V.; Gutierrez, T.D.; Fatemi, R.; Calderon de la Barca Sanchez, M.; Amonett,J.; Bekele, S.; Brandin, A.V.; Chaloupka, P.; Dietel, T.; Finch,E.; Hippolyte,B.; Kiryluk, J.; Arkhipkin, D.; Botje, M.; Estienne, M.; Djawotho,P.; Fedorisin, J.; Kislov, E.M.; Bielcikova, J.; Chajecki, Z.; Hepplemann, S.; Blyth, S.-L.; Abelev, B.I.; Bellingeri-Laurikainen, A.; Benedosso, F.; Catu,O.; Cosentino, M.R.; Daugherity, M.; Gorbunov, Y.G.; Gos,H.; Guimaraes, K.S.F.F.; Haag, B.; Jakl, P.; Jia, F.; Kapitan, J.; Kechechyan, A.; Kocoloski, A.

Funding Information

DE-AC02-05CH11231
NRNC

View MARC record | catkey: 14668911