Online Strangeness in Quark Matter Conference 2021

Session

Bulk (Small systems)

Parallel 5a

May 21, 2021, 9:30 AM

Room A (Zoom)

Conveners

Bulk (Small systems): Parallel 5

• Roy Lacey (Stony Brook University)

92. Production of strange particles in jets and underlying events in pp and p-Pb collisions with ALICE

Pengyao Cui (Central China Normal University CCNU (CN))

5/21/21, 9:30 AM

Experimental talk

Previously reported ALICE measurements have shown that the inclusive production rate of (multi-)strange particles varies smoothly as a function of the size of the collision system, as measured by charged-particle multiplicity in pp, p-Pb, and Pb-Pb collisions. However, more detailed investigation reveals an overall enhancement in the yield of strange baryons relative to mesons for systems...

53. Production of light nuclei in small collision systems with ALICE

Chiara Pinto (INFN and University of Catania)

5/21/21, 9:50 AM

Bulk matter phenomena associated with strange and heavy quarks

Experimental talk

The energy densities reached in high-energy hadronic collisions at the LHC allow significant production of light (anti)nuclei. Their production yields have been measured as a function of $p_{\rm T}$ and charged-particle multiplicity in different collision systems and at different center-of-mass energies by ALICE. One of the most interesting results obtained from such a large variety of...

205. Thermalization time constrained by high-pt QGP tomography

Mr Stefan Stojku (Institute of Physics University of Belgrade)

5/21/21, 10:10 AM

Other

Theory talk

We show that high-$p_{\perp}$ $R_{AA}$ and $v_2$ are way more sensitive to the QGP thermalization time, $\tau_0$, than the distributions of low-$p_{\perp}$ particles, and that the high-$p_{\perp}$ observables prefer relatively late thermalization at $\tau_0$ ∼ 1 fm/c. To calculate high-$p_{\perp}$ $R_{AA}$ and $v_2$, we employ our newly developed DREENA-A formalism, which combines...

136. Characterizing the collective behavior in small and large systems with ATLAS

Pengqi Yin (Columbia University (US))

5/21/21, 10:30 AM

Heavy quark production in nuclear collisions and hadronic interactions

Experimental talk

Measurements of open heavy-flavor hadron production in proton-proton collisions provide a crucial baseline for interpreting measurements in nucleus-nucleus collisions, and allow for the investigation of the origin and underlying mechanism of collective effects in small systems.
These measurements are performed with the ATLAS detector at the LHC and capitalize on the large Run 2 $pp$ dataset...