Biomaterial Database

Rho0 production and possible modification in Au+Au and p+p collisions at square root [sNN] = 200 GeV. 2004

J Adams, and C Adler, and M M Aggarwal, and Z Ahammed, and J Amonett, and B D Anderson, and D Arkhipkin, and G S Averichev, and S K Badyal, and J Balewski, and O Barannikova, and L S Barnby, and J Baudot, and S Bekele, and V V Belaga, and R Bellwied, and J Berger, and B I Bezverkhny, and S Bhardwaj, and A K Bhati, and H Bichsel, and A Billmeier, and L C Bland, and C O Blyth, and B E Bonner, and M Botje, and A Boucham, and A Brandin, and A Bravar, and R V Cadman, and X Z Cai, and H Caines, and M Calderón de la Barca Sánchez, and J Carroll, and J Castillo, and D Cebra, and P Chaloupka, and S Chattopadhyay, and H F Chen, and Y Chen, and S P Chernenko, and M Cherney, and A Chikanian, and W Christie, and J P Coffin, and T M Cormier, and J G Cramer, and H J Crawford, and D Das, and S Das, and A A Derevschikov, and L Didenko, and T Dietel, and W J Dong, and X Dong, and J E Draper, and F Du, and A K Dubey, and V B Dunin, and J C Dunlop, and M R Dutta Majumdar, and V Eckardt, and L G Efimov, and V Emelianov, and J Engelage, and G Eppley, and B Erazmus, and M Estienne, and P Fachini, and V Faine, and J Faivre, and R Fatemi, and K Filimonov, and P Filip, and E Finch, and Y Fisyak, and D Flierl, and K J Foley, and J Fu, and C A Gagliardi, and N Gagunashvili, and J Gans, and M S Ganti, and L Gaudichet, and F Geurts, and V Ghazikhanian, and P Ghosh, and J E Gonzalez, and O Grachov, and O Grebenyuk, and S Gronstal, and D Grosnick, and S M Guertin, and A Gupta, and T D Gutierrez, and T J Hallman, and A Hamed, and D Hardtke, and J W Harris, and M Heinz, and T W Henry, and S Heppelmann, and B Hippolyte, and A Hirsch, and E Hjort, and G W Hoffmann, and M Horsley, and H Z Huang, and S L Huang, and E Hughes, and T J Humanic, and G Igo, and A Ishihara, and P Jacobs, and W W Jacobs, and M Janik, and H Jiang, and I Johnson, and P G Jones, and E G Judd, and S Kabana, and M Kaplan, and D Keane, and V Yu Khodyrev, and J Kiryluk, and A Kisiel, and J Klay, and S R Klein, and A Klyachko, and D 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University of Birmingham, Birmingham, United Kingdom.

We report results on rho(770)(0)-->pi(+)pi(-) production at midrapidity in p+p and peripheral Au+Au collisions at sqrt[s(NN)]=200 GeV. This is the first direct measurement of rho(770)(0)-->pi(+)pi(-) in heavy-ion collisions. The measured rho(0) peak in the invariant mass distribution is shifted by approximately 40 MeV/c(2) in minimum bias p+p interactions and approximately 70 MeV/c(2) in peripheral Au+Au collisions. The rho(0) mass shift is dependent on transverse momentum and multiplicity. The modification of the rho(0) meson mass, width, and shape due to phase space and dynamical effects are discussed.