12th International Conference on Hard and Electromagnetic Probes of High-Energy Nuclear Collisions

Session

Parallel 8: high pt correlations

Sep 23, 2024, 4:30 PM

DEJIMA MESSE NAGASAKI

Conveners

Parallel 8: high pt correlations

• Marco Van Leeuwen (Nikhef National institute for subatomic physics (NL))

166. Study of full event energy-energy correlation in high-$p_\mathrm{T}$ Z tagged events in PbPb collisions in CMS

Ms Yi Chen (Vanderbilt University (US))

9/23/24, 4:30 PM

2. High momentum hadrons and correlations

Oral presentation

The production of a Z boson provides a clean handle to control the population of events to be studied. By selecting muonic decays of Z bosons, we can isolate the effect of the recoiling process without potential bias from requiring isolation, as is the case for photons. Di-hadron correlations can naturally separate effects from different angular scales. Similar to the energy-energy correlator...

158. Investigating initial state of heavy-ion and pp collisions using [pT] fluctuations and vn − [pT] correlations in ATLAS

Tomasz Bold (AGH University of Krakow (PL))

9/23/24, 4:50 PM

2. High momentum hadrons and correlations

Oral presentation

This talk presents recent studies of event-wise mean transverse momentum, [pT] that can help differentiate the interplay between the effect of radial collectivity, random thermal motion and deformation in nuclear geometry. In addition, the Pearson Correlation Coefficient (PCC) between flow, vn and [pT] , ρ(vn, [pT]), will be shown. The results bear on aspects of the initial state, such as...

161. Measurement of Azimuthal Anisotropy of High Transverse Momentum Charged Particles in Pb+Pb Collisions using Multi-particle Cumulants with the ATLAS Detector

Xiaoning Wang (Univ. Illinois at Urbana Champaign (US))

9/23/24, 5:10 PM

2. High momentum hadrons and correlations

Oral presentation

Heavy-ion collisions produce a hot, dense medium, and high-momentum par- tons from the collision traverse this medium while losing energy in it. Because of the initial geometry of the QGP, partons produced at different angles, with respect to the impact parameter, traverse different path lengths in the medium leading to azimuthal-angle dependence of the yields of high transverse momen- tum...

139. Strangeness studies in LHCb fixed-target collisions

Federica Fabiano (Università e INFN Cagliari (IT))

9/23/24, 5:30 PM

5. Nuclear PDFs, saturation, and early time dynamics

Oral presentation

Leveraging on the injection of noble gases into the LHC accelerator beam-
pipe, LHCb has been collecting since 2015 proton- and lead-gas collisions, which
give access to the poorly explored high-x and moderate Q2 kinematic region. In
particular, studies of strangeness production provides information on hadroniza-
tion and serve as important inputs to models of particle production in...

196. Measurements of the light-by-light scattering and the Breit–Wheeler processes, and searches for axion-like particles in ultraperipheral PbPb collisions at $\sqrt{s_{NN}}$ = 5.02 TeV

Pranati Jana (Indian Institute of Technology Madras (IN))

9/23/24, 5:50 PM

4. Electromagnetic and electroweak probes

Oral presentation

Measurements of the light-by-light scattering (LbL, $\gamma\gamma\to\gamma\gamma$) and the Breit--Wheeler (B--W, $\gamma\gamma\to\mathrm{e}^+\mathrm{e}^-$) processes are reported in ultraperipheral collisions at 5.02 TeV using the 2018 CMS lead-lead data sample of $1.65~\mathrm{nb}^{-1}$. Events with a pair of exclusively produced photons or electrons are selected, each with transverse energy...

175. Measurement of the tau $g-2$ factor in the ultraperipheral PbPb collisions recorded by the CMS experiment

Arash Jofrehei (University of Zurich (CH))

9/23/24, 6:10 PM

4. Electromagnetic and electroweak probes

Oral presentation

Measurements of the anomalous magnetic moment of leptons are good handles for precision tests of the Standard Model and hints of physics beyond the Standard Model. These measurements for electrons and muons are among the most precisely measured quantities in physics. However, due to the short lifetime of the tau lepton, its anomalous magnetic moment is not as precisely known and needs to be...