J/ψ production via fragmentation at HERA

Godbole, R. M. ; Roy, D. P. ; Sridhar, K. (1996) J/ψ production via fragmentation at HERA Physics Letters B, 373 (4). pp. 328-333. ISSN 0370-2693

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Official URL: http://linkinghub.elsevier.com/retrieve/pii/037026...

Related URL: http://dx.doi.org/10.1016/0370-2693(96)00144-X


We compute the contributions to large-pTJ/ψ production at DHEA coming from fragmentation of gluons and charm quarks. We find that the charm quark fragmentation contribution dominates over the direct production of J/ψ via photongluon fusion at large-pT, while the gluon fragmentation is negligibly small over the whole range of pT. An experimental study of pT distributions of J/ψ at HERA will providea direct probe of the charm quark fragmentation functions.

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