Speaker
Description
We present a novel measurement of in-jet azimuthal asymmetry in $\sqrt{s}=91.2\,\mathrm{GeV}$ $e^+e^-$ collisions, providing a precision vacuum reference and a controlled bridge to QGP-like collectivity. Using ALEPH data and validated simulations, we extract fully-unfolded, per-jet constituent Fourier harmonics $V_n$ ($n=1\text{-}3$) with respect to the jet axis. We compare the Winner-Take-All axis (defined by WTA recombination and aligned with the hardest branch) and the E-scheme axis (defined by the vector sum of in-jet constituent four-momenta) to quantify sensitivity to soft jet constituents, and we benchmark the results against multiple modern event generators. To study possible flow-driven effects on these observables, we use a dedicated Monte Carlo framework that injects a tunable flow-like modulation at the constituent level and measures the corresponding response. Future prospects and extensions of this study will also be discussed.
| Is this an experimental talk? | Yes |
|---|---|
| Is this on behalf of a collaboration? | Yes |
| Which collaboration? | Electron-Positron Alliance |
| Are you willing to present as a poster if it is not selected for oral presentation? | Yes |