Forward Physics at CMS

TL;DR

This paper measures the forward energy flow in CMS at multiple energies, testing standard model predictions and Monte Carlo models, and also studies forward jets at 7 TeV to improve understanding of forward physics phenomena.

Contribution

It provides new measurements of forward energy flow and jets in CMS, offering data to refine Monte Carlo models and enhance understanding of forward processes in high-energy collisions.

Findings

Forward energy flow measurements at 0.9, 2.36, and 7 TeV.

Comparison of energy flow with various Monte Carlo models.

Study of forward jets at 7 TeV.

Abstract

Studies of forward processes are important tests of the standard model and inputs for Monte Carlo tuning. A measurement of the energy flow in the forward pseudorapidity region of CMS, $3.15 < \vert \eta \vert < 4.9$, is presented for 3 values of the centre-of-mass energy $\sqrt{s}$ = 0.9 TeV, 2.36 TeV and 7 TeV. The forward energy flow is measured for minimum bias events and for events with a central dijet system the transverse energy of which provides a hard scale. The energy flow is compared to various Monte Carlo models with different multiparton interaction schemes. A study of forward jets in the pseudorapidity range $3.2 < \vert \eta \vert < 4.7$ is presented for $\sqrt{s}$ = 7 TeV.