Jul 4 – 11, 2018
Asia/Seoul timezone

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

Jul 6, 2018, 6:00 PM
105 (COEX, Seoul)


COEX, Seoul

Parallel Heavy Ions Heavy Ions


Anthony Badea (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.

Primary authors

Yen-Jie Lee (Massachusetts Inst. of Technology (US)) Austin Alan Baty (Massachusetts Inst. of Technology (US)) 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)) Michael Peters (Massachusetts Inst. of Technology (US)) Paoti Chang (National Taiwan University (TW)) Mr Tzu-An Sheng (National Taiwan University) Anthony Badea (Massachusetts Inst. of Technology (US))

Presentation materials