Probing the Gauge Content of Heavy Resonances with Soft Radiation

Details Probing the Gauge Content of Heavy Resonances with Soft Radiation Probing the Gauge Content of Heavy Resonances with Soft Radiation

2009-08-26

arxiv.org/abs/0908.3688v1

Phys.Rev.D80:094020,2009

Physics

High Energy Physics

High Energy Physics - Phenomenology

40 pages, 14 figures

Scientific paper

10.1103/PhysRevD.80.094020

The use of energy flow is investigated as a diagnostic tool for determining the color SU(3) representation of new resonances. It is found that the pattern of soft gluon radiation into a rapidity gap depends on color flow in the hard scattering, and reflects the gauge content of new physics. The massive soft anomalous dimension matrix for rapidity gap events is introduced for describing soft gluon emission analytically in heavy quark pair production. A gap fraction is used for quantifying the amount of soft radiation into the gap region. In general, the results illustrate that radiation is greater for a singlet resonance than for an octet. Especially, it is found that the quantitative difference is quite distinguishable for spin-1 resonances, depending on the gauge content in the new sector.

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