Summary
- R2ij(f) ? spatial correlation tensor Smn, encodes source information in natural frame
- implicit dependence Smn(f) due to transverse x-p correlations (flow, opaqueness…)
- complicate relation between R2 and Smn: higher harmonics to both
- presence of significant implicit dependence checkable via consistency relations
- explicit f-dependence (due to spacetime geometry) dominates implicit @ low pT
- Smn(f) ? Smn: 5 nonvanishing components @ ycm encode:
- 4 spacetime homogeneity lengths
- S22-S11 (transverse elliptic shape) ? 2nd-order oscillations in Ro2, Rs2, Ros2
- spatial tilt of source in reaction plane - “the last static component”
- S13 ? striking 1st-order oscillations in Rol2, Rsl2
- Tilt @ AGS
- large and positive
- measurable (and measured!!)
- experimental handle on physics of flow dynamics (rescatt., meanfield)