May 13 – 19, 2018
Venice, Italy
Europe/Zurich timezone
The organisers warmly thank all participants for such a lively QM2018! See you in China in 2019!

Long-range angular correlations of charged particles in high multiplicity e+e- collisions using archived data from the ALEPH detector at LEP

May 15, 2018, 12:10 PM
Sala Mosaici-2, 3rd Floor (Palazzo del Casinò)

Sala Mosaici-2, 3rd Floor

Palazzo del Casinò

Parallel Talk Collectivity in small systems Collectivity in small systems


Yen-Jie Lee (Massachusetts Inst. of Technology (US))


First results on two-particle angular correlations for charged particles emitted in $e^+e^-$ collisions using 730 $pb^{-1}$ of data collected between 91 and 209 GeV with the ALEPH detector at LEP are presented. With the archived data, the correlation functions are studied over a broad range of pseudorapidity $\eta$ (rapidity $y$) and azimuthal angle $\phi$ with respect to the electron-positron beam axis and the event thrust axis. Short-range correlations in $\Delta\eta$ ($\Delta y$), which are studied with $e^+e^-$ annihilations which reveal jet-like correlations. Long-range azimuthal correlations are studied differentially as a function of charged particle multiplicity. Those results are compared to event generators and are complementary to the studies of the ridge signals in high multiplicity pp, pA and AA collisions at the RHIC and the LHC.

Centralised submission by Collaboration Presenter name already specified
Collaboration ALEPH
Content type Experiment

Primary authors

Yen-Jie Lee (Massachusetts Inst. of Technology (US)) Anthony Badea (Massachusetts Inst. of Technology (US)) Austin Alan Baty (Massachusetts Inst. of Technology (US)) Bibek Pandit (Massachusetts Institute of Technology) Christopher Mcginn (Massachusetts Inst. of Technology (US)) Gian Michele Innocenti (Massachusetts Inst. of Technology (US)) Jesse Thaler (MIT) Marcello Maggi (Universita e INFN, Bari (IT)) Paoti Chang (National Taiwan University (TW)) Mr Tzu-An Sheng (National Taiwan University) Michael Peters (Massachusetts Institute of Technology)

Presentation materials