Early Standard Model Measurement and Determination of Standard Model Background for Searches

TL;DR

This paper discusses early measurements of Standard Model processes at the LHC to understand detector performance and background, crucial for new physics searches and calibration during initial data collection.

Contribution

It presents initial Standard Model measurements and background estimations essential for calibrating detectors and guiding searches at the start of LHC operations.

Findings

Preliminary Standard Model process measurements established

Background estimates inform detector calibration and analysis strategies

Guidelines for initial data-taking and analysis at LHC

Abstract

The Large Hadron Collider (LHC) at CERN in Geneva (Switzerland) will go in operation in the coming months and will soon enable us to analyze the highest energy collisions ever produced at an accelerator. Beyond Standard Model searches at LHC require a detailed understanding of the detector performance, reconstruction algorithms and triggering. Precision measurements of Standard Model processes are also mandatory to acquire the necessary knowledge of Standard Model background. Both ATLAS and CMS efforts are hence addressed to determine the best calibration candles and to design a realistic plan for the initial period of data taking.