Jul 8 – 12, 2024
Facultat de Biologia, Universitat de Barcelona
Europe/Madrid timezone

Measurement of azimuthal anisotropy at high $p_\mathrm{T}$ using subevent cumulants in pPb collisions at CMS

Jul 10, 2024, 3:20 PM
20m
Aula M3 (Facultat de Biologia)

Aula M3

Facultat de Biologia

Contributed talk G. Heavy Ion Physics

Speakers

Prabhat Pujahari (IIT Madras) Prabhat Ranjan Pujahari

Description

Measurements at the LHC have provided evidence for collective behavior in high-multiplicity proton-proton (pp) and proton-lead (pPb) collisions through multiparticle correlation techniques. To investigate detailed properties of this collectivity, a comprehensive study of differential Fourier coefficients ($v_{n}$) in particle transverse momentum ($p_\mathrm{T}$) and event multiplicity is presented in pPb collisions recorded by the CMS experiment at a nucleon-nucleon center-of-mass energy $\sqrt{s_{_{\mathrm{NN}}}} = 8.16$ TeV. In particular, new measurements of $p_\mathrm{T}$-differential multiparticle cumulants using the subevent cumulant method in distinct subevent regions are presented. Relative to past CMS measurements, the new study probes an extended phase space region up to a high particle $p_\mathrm{T}$, putting the observation of nonzero high-$p_\mathrm{T}$ $v_{2}$ in a small-sized medium into stringent tests.

session G. Heavy Ion Physics

Primary authors

Prabhat Ranjan Pujahari Rohit Kumar Singh (Indian Institute of Technology Madras)

Presentation materials