On QCD resummation withktclustering | Zendy

Yazid Delenda | Zendy; Robert Appleby | Zendy; Mrinal Dasgupta | Zendy; Andrea Banfi | Zendy

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On QCD resummation withk_tclustering

Author(s) -

Yazid Delenda,

Robert Appleby,

Mrinal Dasgupta,

Andrea Banfi

Publication year - 2006

Publication title -

journal of high energy physics

Language(s) - English

Resource type - Journals

SCImago Journal Rank - 0.998

H-Index - 261

eISSN - 1126-6708

pISSN - 1029-8479

DOI - 10.1088/1126-6708/2006/12/044

Subject(s) - resummation , cluster analysis , physics , quantum chromodynamics , hera , jet (fluid) , gluon , limit (mathematics) , particle physics , zeus (particle detector) , term (time) , statistical physics , algorithm , computer science , mathematics , artificial intelligence , mathematical analysis , mechanics , deep inelastic scattering , quantum mechanics , scattering , inelastic scattering

We revisit the impact of the jet algorithm on predictions of energy flow into gaps between hard jets, defined using the kt clustering procedure. The resulting prediction has two distinct components: a primary emission piece that is related to independent emission of soft gluons by the hard jets and a correlated emission (non-global) piece known only in the large Nc limit. We analytically compute the dependence of the primary emission term on the jet algorithm, which gives significantly more insight than our previous numerical study of the same. We also point out that the non-global component of the answer is reduced even more significantly by the clustering than suggested previously in the literature. Lastly we provide improved predictions for the latest ZEUS photoproduction data, assessing the impact of our latest findings.

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