Measurements

Measurement of the Inclusive Jet Cross Section with the - download pdf or read online

By Caterina Doglioni

ISBN-10: 3642305377

ISBN-13: 9783642305375

ISBN-10: 3642305385

ISBN-13: 9783642305382

Tests of the present figuring out of physics on the optimum energies possible in man-made experiments are played at CERN’s huge Hadron Collider. within the conception of the robust strength in the common version of particle physics - Quantum ChromoDynamics or QCD - restricted quarks and gluons from the proton-proton scattering happen themselves as teams of collimated debris. those debris are clustered into bodily measurable gadgets known as hadronic jets. As jets are greatly produced at hadron colliders, they're the main physics items for an early "rediscovery of QCD". This thesis offers the 1st jet dimension from the ATLAS Collaboration on the LHC and confronts the experimental demanding situations of precision measurements. Inclusive jet go part info are then used to enhance the data of the momentum distribution of quarks and gluons in the proton and of the significance of the robust force.

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Additional info for Measurement of the Inclusive Jet Cross Section with the ATLAS Detector at the Large Hadron Collider

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52 is affected by additional material needed to instrument and cool the inner detector, and it is normally excluded from analyses that require a precise measurement of electrons. The LAr calorimeter barrel has an accordion structure as shown in Fig. 6, designed to avoid azimuthal cracks, provide full φ symmetry for particles traversing it and allow for a fast readout. The liquid argon is located in the gaps between the 1,024 accordion absorbers, leading to a drift time of approximately 450 ns under the influence of the 2 kV electric field.

2 Hadronic Endcap (HEC) and Forward (FCal) Calorimeters The larger particle flux and the high energies reached in the forward region leads to the design of a calorimeter system that is able to fully contain hadronic showers and is radiation hard, at a limited cost. Liquid argon is employed as active material in the endcap and forward ATLAS calorimeters. 5 mm active gaps are sandwiched between copper plates. Each hadronic endcap consistes of two wheels, with different widths for the copper plates (25 and 50 mm for inner and outer wheel respectively).

Santoni, Private communication). 2 Hadronic Endcap (HEC) and Forward (FCal) Calorimeters The larger particle flux and the high energies reached in the forward region leads to the design of a calorimeter system that is able to fully contain hadronic showers and is radiation hard, at a limited cost. Liquid argon is employed as active material in the endcap and forward ATLAS calorimeters. 5 mm active gaps are sandwiched between copper plates. Each hadronic endcap consistes of two wheels, with different widths for the copper plates (25 and 50 mm for inner and outer wheel respectively).

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Measurement of the Inclusive Jet Cross Section with the ATLAS Detector at the Large Hadron Collider by Caterina Doglioni


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