Fragmentation contributions to J/ψ production at the Tevatron and the LHC

We compute leading-power fragmentation corrections to J/ψ production at the Tevatron and the LHC. We find that, when these corrections are combined with perturbative corrections through next-to-leading order in the strong coupling constant α(s), we obtain a good fit to high-p(T) cross section data f...

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Bibliographic Details
Published in:Physical review letters 2014-07, Vol.113 (2), p.022001-022001, Article 022001
Main Authors: Bodwin, Geoffrey T, Chung, Hee Sok, Kim, U-Rae, Lee, Jungil
Format: Article
Language:English
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Summary:We compute leading-power fragmentation corrections to J/ψ production at the Tevatron and the LHC. We find that, when these corrections are combined with perturbative corrections through next-to-leading order in the strong coupling constant α(s), we obtain a good fit to high-p(T) cross section data from the CDF and CMS Collaborations. The fitted long-distance matrix elements lead to predictions of near-zero J/ψ polarization in the helicity frame at large p(T).
ISSN:0031-9007
1079-7114
DOI:10.1103/PhysRevLett.113.022001