Measurement of the energy flow in a large eta range and forward jets at LHC at sqrt(s)=0.9 TeV, 2.36 TeV and 7 TeV

TL;DR

This paper reports on measurements of energy flow in the forward region and forward jet production in proton-proton collisions at the LHC across three different energies, providing data to test and improve theoretical models.

Contribution

It presents the first measurements of forward energy flow and jet production at multiple LHC energies, comparing results with Monte Carlo simulations to enhance understanding of underlying event models.

Findings

Energy flow increases with collision energy.

Monte Carlo models show varying agreement with data.

First measurement of forward jets at 0.9 TeV.

Abstract

A measurement is presented for the energy flow of minimum bias events in the forward region (3.15 <|\eta |< 4.9, where \eta is the pseudorapidity) of the CMS detector at the LHC for center-of-mass energies sqrt(s) = 0.9 TeV, 2.36 TeV and 7 TeV. The measurement is compared to Monte Carlo simulations, which use a model of multiparton interactions for the underlying event. In addition, production of forward jets was studied for the very first pp collisions at sqrt(s) = 0.9 TeV at LHC.