Measurements

Download e-book for iPad: Top Quark Pair Production: Precision Measurements of the Top by Anna Christine Henrichs

By Anna Christine Henrichs

ISBN-10: 3319014862

ISBN-13: 9783319014869

ISBN-10: 3319014870

ISBN-13: 9783319014876

Before any type of new physics discovery should be made on the LHC, an actual knowing and dimension of the traditional version of particle physics' procedures used to be beneficial. The publication presents an advent to most sensible quark construction within the context of the normal version and offers such distinct measurements of the construction of most sensible quark pairs in proton-proton collisions at a center-of-mass power of seven TeV that have been saw with the ATLAS scan on the LHC. The awarded measurements concentrate on occasions with one charged lepton, lacking transverse strength and jets. utilizing novel and complicated research options in addition to an exceptional realizing of the detector, they represent the main specific measurements of the volume at that time.

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Additional resources for Top Quark Pair Production: Precision Measurements of the Top Quark Pair Production Cross Section in the Single Lepton Channel with the ATLAS Experiment

Example text

2, with a four week period of first heavy ion collision at the end of the year. 2 Operation of the LHC resumed in March 2011 with significantly increased beam luminosities, delivering more than 5 fb−1 of data to the ATLAS experiment until November 2011, see Fig. 2, when another heavy ion collision period started to end the 2011 run. The the year 2012 at a center-of-mass energy of √ LHC is expected to run throughout s = 8 TeV, adding another 10–15 fb−1 of data to the available data set. Afterwards a√longer shutdown is planned to upgrade the machine and detectors for operation at s = 14 TeV and design beam parameters.

The L2 algorithms have access to the full amount of data taken in all subdetectors at full precision and granularity, but only use this information in the defined ROIs to reduce the time needed for reconstruction, achieving a latency of 1–10 ms depending on the type of the event. A reduction of the data rate to 1 kHz is gained mostly by more precise pT measurements for leptons using information from the inner tracking detector, and by requiring isolation in the calorimeter or a combination of several objects.

CERN-AC-95-05-LHC (1995) 2. LEP Design Report: Vol. 2. The LEP main ring. CERN-LEP-84-01 (1984) 3. The ATLAS Collaboration. ATLAS: detector and physics performance technical design, report. Volume 1. CERN-LHCC-99-14 (1999) 4. The ATLAS Collaboration. ATLAS: detector and physics performance technical design, report. Volume 2. CERN-LHCC-99-15 (1999) 5. The CMS Collaboration. CMS physics: technical design, report volume 1. CERN-LHCC-2006001 (2006) 6. The LHCb Collaboration. LHCb technical proposal.

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Top Quark Pair Production: Precision Measurements of the Top Quark Pair Production Cross Section in the Single Lepton Channel with the ATLAS Experiment by Anna Christine Henrichs


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