HBT shape analysis with q-cumulants

H. C. Eggers; P. Lipa

doi:10.1590/s0103-97332007000600004

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HBT shape analysis with q-cumulants

H. C. Eggers·P. Lipa

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Abstract

Taking up and extending earlier suggestions, we show how two- and threedimensional shapes of second-order HBT correlations can be described in a multivariate Edgeworth expansion around gaussian ellipsoids, with expansion coefficients, identified as the cumulants of pair momentum difference q, acting as shape parameters. Off-diagonal terms dominate both the character and magnitude of shapes. Cumulants can be measured directly and so the shape analysis has no need for fitting.

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H. C. Eggers, P. Lipa. 2007-03-29. HBT shape analysis with q-cumulants. https://doi.org/10.1590/s0103-97332007000600004

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