2021-01-15
16:32 |
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Probing the initial stages of heavy ion collisions with direct photons at PHENIX
/ Esha, Roli (speaker) (Center for Frontiers in Nuclear Science, Stony Brook University)
Direct photons are emitted unscathed from all the stages of the relativistic heavy ion collisions and therefore are an excellent probe to study the properties of Quark Gluon Plasma (QGP) as they do not interact strongly with the medium. PHENIX has already measured a direct photon excess in Au+Au collisions at 200 GeV in the low momentum region with respect to p+p collisions. [...]
2021 - 0:18:00.
Conferences; Initial Stages 2021
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In : Initial Stages 2021
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2021-01-15
16:28 |
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2021-01-15
15:44 |
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Dynamical initialization of hydrodynamics for heavy-ion collisions at Beam Energy Scan energies
/ Du, Lipei (speaker) (The Ohio State University)
At Relativistic Heavy Ion Collider (RHIC) Beam Energy Scan (BES) energies, the dynamics of the pre-hydrodynamic stage and the effects from a nonzero net baryon current become essential components of the dynamical evolution of the collision fireball. We develop a (3+1)-dimensional initial stage model for both energy-momentum and the net baryon current, as dynamical initial conditions for a hydrodynamic evolution module, before the colliding nuclei interpenetrate and the produced system gets completely hydrodynamized. [...]
2021 - 0:17:13.
Conferences; Initial Stages 2021
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2021-01-15
15:44 |
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Observation of impact parameter dependence of $\mu^{+}\mu^{-}$ acoplanarity in ultra-peripheral PbPb collisions
/ Yang, Shuai (speaker) (Rice University)
The CMS Collaboration reports on new differential measurements of $\gamma\gamma \rightarrow \mu^{+}\mu^{-}$ production in ultra-peripheral PbPb collisions at $\sqrt{s_{\rm NN}}$ = 5.02~TeV, using data collected during the 2018 LHC run with an integrated luminosity of 1.5~nb$^{-1}$. Photon-photon interactions have been observed in hadronic heavy-ion collisions by STAR and ALTAS experiments at very low transverse momentum ($p_T$) regions and the measured $p_T$ and azimuthal angular correlations of lepton pairs via $\gamma\gamma$ scattering in hadronic events exhibit significant broadening compared to that from vacuum production in ultra-peripheral events. [...]
2021 - 0:22:58.
Conferences; Initial Stages 2021
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2021-01-15
15:44 |
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2021-01-15
15:44 |
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Hard probes production in pPb collisions at LHCb
/ Luo, Yiheng (speaker) (Tsinghua University (CN))
Within the p-Pb data sample collected by the LHCb detector at sqrt(s_NN) = 8.16 TeV, a rich set of open charm hadrons is observed with abundant statistics.
Thanks to the LHCb forward acceptance that is complementary to general purpose detectors, with excellent performance in particle reconstruction and identification,these charm states are studied down to zero pT with overwhelming precision.
In this talk, we present latest measurements of charm mesons in pPb collisions
by LHCb. [...]
2021 - Streaming video.
Conferences; Initial Stages 2021
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In : Initial Stages 2021
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2021-01-15
15:06 |
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2021-01-15
14:31 |
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2021-01-15
14:30 |
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2021-01-15
14:29 |
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