JP Morgan is the "lead left" underwriter for the offering, and is joined by Citigroup and Credit Suisse as joint-bookrunning managers.
Link to Carlyle's amended S-1 registration statement: http://www.sec.gov/Archives/edgar/data/1527166/000095012312005979/x83442a7sv1za.htm
Links to articles discussing Carlyle's IPO:
WSJ.com:
http://online.wsj.com/article/SB10001424052702304299304577346561593778158.html?KEYWORDS=Carlyle+Group
Bloomberg:
http://www.bloomberg.com/news/2012-04-16/carlyle-seeking-as-much-as-762-5-million-in-initial-offering.html