Contribution of the HMPID detector to the high-pT physics at LHC

TL;DR

The paper discusses the design and potential contributions of the HMPID detector at LHC for identifying high-momentum particles, aiding in understanding collision dynamics and jet quenching in high-energy physics.

Contribution

It introduces the HMPID detector's design and its role in particle identification and correlation studies at LHC, highlighting its novel features and expected physics impact.

Findings

HMPID can identify pions, kaons, and protons in the 1-5 GeV/c range.

HMPID layout is optimized for studying particle correlations and system evolution.

Potential to measure resonance particles like the phi meson.

Abstract

The LHC will deliver unexplored energy regimes for proton-proton and heavy-ion collisions. As shown by the RHIC experiments, particle identification over a large momentum range is essential to disentangle physics processes, especially in the intermediate p$_T$ (1 $<p_{T}<5$ GeV/c) region. The novel design of the High-Momentum Particle Identification Detector (HMPID), based on large surface CsI photocathodes, is able to identify $\pi^{\pm}$, $K^{\pm}$, $p$ and $\bar{p}$ in the momentum region where bulk medium properties and hard scatterings interplay. Furthermore, measurement of resonance particles such as the $\phi \to K^+K^-$ could provide information on the system evolution. The HMPID layout and segmentation are optimized to study particle correlations at high momenta describing the early phase and the dynamical evolution of the collision. At LHC, the increased hard cross section will significantly be enhanced compared to RHIC. Jet reconstruction via Deterministic Annealing can address jet quenching and detailed measurements of jet properties. In this paper, we present these selected topics from the possible HMPID contributions to the physics goals of LHC.