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CERN Document Server 385 records found  1 - 10nextend  jump to record: Search took 0.59 seconds. 
1.
Observation of the Identical Rigidity Dependence of the Primary Cosmic Rays Helium, Carbon and Oxygen fluxes by the Alpha Magnetic Spectrometer on the International Space Station / Weng, Zhili (MIT) /AMS Collaboration
We report on the observation of new and unexpected properties of primary cosmic rays, He, C, and O, measured in the rigidity (momentum/charge) range 2~GV to $3$~TV with 90 million helium, 8.4 million carbon, and 7.0 million oxygen nuclei collected by the Alpha Magnetic Spectrometer on the International Space Station during the first 5 years of operation. Unexpectedly, above 60 GV, these three spectra have identical rigidity dependence. [...]
SISSA, 2018 - 4 p. - Published in : PoS ICHEP2018 (2019) 364 Fulltext: PDF;
In : XXXIX International Conference on High Energy Physics, Seoul, Korea, 4 - 11 Jul 2018, pp.364
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2.
Precision Measurements of Electron Flux and Positron Flux in Primary Cosmic Rays with the Alpha Magnetic Spectrometer on the International Space Station / Weng, Zhili (MIT) /AMS Collaboration
Precision measurements of the primary cosmic ray positrons and electrons are presented up to 1\,TeV using the data sample of 1.9 million positrons and 28.1 million electrons collected by the Alpha Magnetic Spectrometer on the International Space Station. The positron flux and electron flux exhibit distinctly different and complex energy dependence. [...]
SISSA, 2018 - 4 p. - Published in : PoS ICHEP2018 (2019) 368 Fulltext: PDF;
In : XXXIX International Conference on High Energy Physics, Seoul, Korea, 4 - 11 Jul 2018, pp.368
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3.
Towards Understanding the Origin of Cosmic-Ray Positrons / Weng, Zhili (MIT, Cambridge, Dept. Phys.) /AMS Collaboration
Precision measurements of cosmic ray positrons by the Alpha Magnetic Spectrometer on the International Space Station are presented up to 1 TeV based on 1.9 million positrons.The positron flux exhibits a significant excess starting from $25.2 \pm 1.8$ GeV followed by a sharp drop-off above $284^{+91}_{-64}$ GeV.In the entire energy range the positron flux is well described by the sum of a diffuse termassociated with low energy secondary positrons produced in the collision of cosmic rays, and a new source term of high energy positrons with a finite energy cutoff. The finite cutoff energy of the source term, $E_s$, is established with a significance of more than $4 \sigma$, and it's value is determined to be $E_s = 810^{+310}_{-180}$ GeV.These experimental data on cosmic ray positrons show that, at high energies, they predominantly originate either from dark matter collisions or from new astrophysical sources..
2020 - 8 p. - Published in : PoS ICRC2019 (2020) 091 Fulltext: PDF;
In : 36th International Cosmic Ray Conference, Madison, WI, USA, 24 Jul - 1 Aug 2019, pp.091
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4.
Towards Understanding the Origin of Cosmic-Ray Positrons and Electrons / Weng, Zhili (MIT) /AMS Collaboration
Precision measurements of cosmic-ray positron flux and electron flux by the Alpha Magnetic Spectrometer on the International Space Station are presented based on 1.9 million positrons up to 1 TeV and 28.1 million electrons up to 1.4 TeV. The positron flux and electron flux have distinctly different magnitudes and energy dependences. [...]
SISSA, 2021 - 6 p. - Published in : PoS ICHEP2020 (2021) 615 Fulltext: PDF;
In : 40th International Conference on High Energy Physics (ICHEP), Prague, Czech Republic, 28 Jul - 6 Aug 2020, pp.615
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5.
Latest Results from the AMS Experiment on the International Space Station / Weng, Zhili (MIT) /AMS Collaboration
The Alpha Magnetic Spectrometer is a general-purpose particle physics detector operating on the International Space Station. Precision measurements by AMS of the cosmic-ray elementary particle fluxes and nuclei fluxes reveal new unexpected phenomena. [...]
SISSA, 2021 - 10 p. - Published in : PoS ICHEP2020 (2021) 045 Fulltext: PDF;
In : 40th International Conference on High Energy Physics (ICHEP), Prague, Czech Republic, 28 Jul - 6 Aug 2020, pp.045
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6.
Measurement of the centrality dependence of the charged-particle pseudorapidity distribution in proton--lead collisions at $\sqrt{s_{_\text{NN}}} = 5.02$ TeV with the ATLAS detector / ATLAS Collaboration
The centrality dependence of the mean charged-particle multiplicity as a function of pseudorapidity is measured in approximately 1 $\mu$b$^{-1}$ of proton--lead collisions at a nucleon--nucleon centre-of-mass energy of $\sqrt{s_{_\text{NN}}} = 5.02$ TeV using the ATLAS detector at the Large Hadron Collider. Charged particles with absolute pseudorapidity less than 2.7 are reconstructed using the ATLAS pixel detector. [...]
arXiv:1508.00848; CERN-PH-EP-2015-160; CERN-PH-EP-2015-160.- Geneva : CERN, 2016-04-12 - 28 p. - Published in : Eur. Phys. J. C 76 (2016) 199 Article from SCOAP3: scoap3-fulltext - PDF; scoap - PDF; Fulltext: PDF; Springer Open Access article: PDF; External link: Rivet analyses reference
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7.
Centrality, rapidity and transverse momentum dependence of isolated prompt photon production in lead-lead collisions at $\sqrt{s_{\mathrm{NN}}} = 2.76$ TeV measured with the ATLAS detector / ATLAS Collaboration
Prompt photon production in $\sqrt{s_{\mathrm{NN}}} = 2.76$ TeV Pb+Pb collisions has been measured by the ATLAS experiment at the Large Hadron Collider using data collected in 2011 with an integrated luminosity of 0.14 nb$^{-1}$. Inclusive photon yields, scaled by the mean nuclear thickness function, are presented as a function of collision centrality and transverse momentum in two pseudo rapidity intervals, $|\eta| < 1.37$ and $1.52 < |\eta| < 2.37$. [...]
arXiv:1506.08552; CERN-PH-EP-2015-142; CERN-PH-EP-2015-142.- Geneva : CERN, 2016-03-28 - 28 p. - Published in : Phys. Rev. C 93 (2016) 034914 APS Open Access article: PDF; Fulltext: PDF; External links: Previous draft version; Preprint
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8.
Measurement of the production of neighbouring jets in lead-lead collisions at $\sqrt{s_{\mathrm{NN}}} = 2.76$ TeV with the ATLAS detector / ATLAS Collaboration
This Letter presents measurements of correlated production of nearby jets in Pb+Pb collisions at $\sqrt{s_{\mathrm{NN}}} = 2.76$ TeV using the ATLAS detector at the Large Hadron Collider. The measurement was performed using 0.14 ${\rm nb}^{-1}$ of data recorded in 2011. [...]
arXiv:1506.08656; CERN-PH-EP-2015-143; CERN-PH-EP-2015-143.- Geneva : CERN, 2015-12-17 - 20 p. - Published in : Phys. Lett. B 751 (2015) 376-395 Article from SCOAP3: PDF; Elsevier Open Access article: PDF; Fulltext: PDF; External links: Previous draft version; Preprint
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9.
Measurement of the forward-backward asymmetry of electron and muon pair-production in $pp$ collisions at $\sqrt{s}$ = 7 TeV with the ATLAS detector / ATLAS Collaboration
This paper presents measurements from the ATLAS experiment of the forward-backward asymmetry in the reaction $pp\rightarrow Z/\gamma^{*}\rightarrow l^{+}l^{-}$, with $l$ being electrons or muons, and the extraction of the effective weak mixing angle. The results are based on the full set of data collected in 2011 in $pp$ collisions at the LHC at $\sqrt{s}$ = 7 TeV, corresponding to an integrated luminosity of 4.8 fb$^{-1}$. [...]
arXiv:1503.03709; CERN-PH-EP-2014-259; CERN-PH-EP-2014-259.- Geneva : CERN, 2015-09-09 - 25 p. - Published in : JHEP 09 (2015) 049 Article from SCOAP3: PDF; Fulltext: PDF; Springer Open Access article: PDF; External links: Rivet analyses reference; Rivet analyses reference; Rivet analyses reference
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10.
Two-particle Bose--Einstein correlations in $pp$ collisions at $\mathbf {\sqrt{s} =}$ 0.9 and 7 TeV measured with the ATLAS detector / ATLAS Collaboration
The paper presents studies of Bose--Einstein Correlations (BEC) for pairs of like-sign charged particles measured in the kinematic range $p_{\rm T} >$ 100 MeV and $|\eta|<$ 2.5 in proton--proton collisions at centre-of-mass energies of 0.9 and 7 TeV with the ATLAS detector at the CERN Large Hadron Collider. The integrated luminosities are approximately 7 $\mu$b$^{-1}$, 190 $\mu$b$^{-1}$ and 12.4 nb$^{-1}$ for 0.9 TeV, 7 TeV minimum-bias and 7 TeV high-multiplicity data samples, respectively. [...]
arXiv:1502.07947; CERN-PH-EP-2014-264; CERN-PH-EP-2014-264.- Geneva : CERN, 2015-10-01 - 26 p. - Published in : Eur. Phys. J. C 75 (2015) 466 Article from SCOAP3: PDF; Fulltext: PDF; Fulltext from Publisher: PDF; Springer Open Access article: PDF;
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CERN Document Server : 385 records found   1 - 10nextend  jump to record:
See also: similar author names
25 Weng, Z
3 Weng, Z L
19 Weng, Z L
17 Weng, Z O
20 Weng, Z Q
56 Weng, Z Y
6 Weng, Z  L
11 Weng, Z.
2 Weng, Z.Q.
14 Weng, Zi-Hua
11 Weng, Zihua
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