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Zhengguo Zhao

Researcher at University of Science and Technology of China

Publications -  383
Citations -  49257

Zhengguo Zhao is an academic researcher from University of Science and Technology of China. The author has contributed to research in topics: Large Hadron Collider & Higgs boson. The author has an hindex of 94, co-authored 383 publications receiving 45405 citations. Previous affiliations of Zhengguo Zhao include Universidade Nova de Lisboa & ETH Zurich.

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Test of the universality of $\tau$ and $\mu$ lepton couplings in $W$-boson decays from $t\bar{t}$ events with the ATLAS detector

Georges Aad, +2944 more
TL;DR: In this article, a measurement of the ratio of the rate of decay of $W$ bosons to $Tau$-leptons and muons is presented based on 139 fb${}^{-1}$ of data recorded with the ATLAS detector in proton-proton collisions at 13$ TeV.

Amplitude analysis of the $χ_{c1} \to ηπ^+π^-$ decays

M. Ablikim, +436 more

Comparison of fragmentation functions for light-quark- and gluon-dominated jets from $pp$ and Pb+Pb collisions in ATLAS

Morad Aaboud, +2912 more
TL;DR: In this article, charged-particle fragmentation functions for jets azimuthally balanced by a high-transverse-momentum, prompt, isolated photon are measured in $25$ pb$^{-1}$ of Pb+Pb collision data at $5.02$ TeV per nucleon pair with the ATLAS detector at the Large Hadron Collider.
Journal ArticleDOI

Amplitude Analysis of the Decays $\eta^\prime \rightarrow \pi^+\pi^-\pi^0$ and $\eta^\prime \rightarrow \pi^0\pi^0\pi^0$

M. Ablikim, +424 more
- 13 Jun 2016 - 
TL;DR: In this paper, an amplitude analysis of the isospin-violating decays η′→π+π-π0 and η´→π 0π0ππ0 is performed based on a sample of 1.31×109 J/ψ events collected with the BESIII detector.

Measurement of flow harmonics with multi-particle cumulants in Pb+Pb collisions at $\sqrt{s_{NN}}=2.76$ TeV with the ATLAS detector

Georges Aad, +2885 more
Abstract: ATLAS measurements of the azimuthal anisotropy in lead–lead collisions at √ sNN = 2.76 TeV are shown using a dataset of approximately 7 μb−1 collected at the LHC in 2010. The measurements are performed for charged particles with transverse momenta 0.5 < pT < 20 GeV and in the pseudorapidity range |η| < 2.5. The anisotropy is characterized by the Fourier coefficients, vn , of the charged-particle azimuthal angle distribution for n = 2–4. The Fourier coefficients are evaluated using multi-particle cumulants calculated with the generating function method. Results on the transverse momentum, pseudorapidity and centrality dependence of the vn coefficients are presented. The elliptic flow, v2, is obtained from the two-, four-, sixand eight-particle cumulants while higher-order coefficients, v3 and v4, are determined with twoand four-particle cumulants. Flow harmonics vn measured with four-particle cumulants are significantly reduced compared to the measurement involving two-particle cumulants. A comparison to vn measurements obtained using different analysis methods and previously reported by the LHC experiments is also shown. Results of measurements of flow fluctuations evaluated with multiparticle cumulants are shown as a function of transverse momentum and the collision centrality. Models of the initial spatial geometry and its fluctuations fail to describe the flow fluctuations measurements.