Measurement of charged-particle distributions sensitive to the underlying event in √s=13 TeV proton-proton collisions with the ATLAS detector at the LHC

doi:10.1007/JHEP03(2017)157

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Aad, G. | Abbott, B. | Большой адронный коллайдер

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DOI Доступ к ресурсу на сайте издателя				10.1007/JHEP03(2017)157

Title: Measurement of charged-particle distributions sensitive to the underlying event in √s=13 TeV proton-proton collisions with the ATLAS detector at the LHC
Creator: Aad, G.
Creator: Abbott, B.
Creator: Chelkov, G. A.
Creator: Khodinov, A.
Creator: Aaboud, M.
Creator: Vaniachine, A.
Subject: ATLAS, детектор
протон-протонные столкновения
Большой адронный коллайдер
Date: 2017
DOI: 10.1007/JHEP03(2017)157
Description: We present charged-particle distributions sensitive to the underlying event, measured by the ATLAS detector in proton-proton collisions at a centre-of-mass energy of 13 TeV, in low-luminosity Large Hadron Collider fills corresponding to an integrated luminosity of 1.6 nb−1. The distributions were constructed using charged particles with absolute pseudorapidity less than 2.5 and with transverse momentum greater than 500 MeV, in events with at least one such charged particle with transverse momentum above 1 GeV. These distributions characterise the angular distribution of energy and particle flows with respect to the charged particle with highest transverse momentum, as a function of both that momentum and of charged-particle multiplicity. The results have been corrected for detector effects and are compared to the predictions of various Monte Carlo event generators, experimentally establishing the level of underlying-event activity at LHC Run 2 energies and providing inputs for the development of event generator modelling. The current models in use for UE modelling typically describe this data to 5% accuracy, compared with data uncertainties of less than 1%.

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Identifier: vtls:000584062
http://vital.lib.tsu.ru/vital/access/manager/Repository/vtls:000584062
Type: статьи в журналах
Source: Journal of high energy physics. 2017. № 3. P. 157 (1-41)
Language: eng

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Физический факультет Measurement of charged-particle distributions sensitive to the underlying event in √s=13 TeV proton-proton collisions with the ATLAS detector at the LHC