CERN Accelerating science

Article
Report number arXiv:1004.2597 ; CERN-PH-EP-2010-007 ; TPJU-1-2010 ; CERN-PH-EP-2010-007 ; TPJU-1-2010
Title $\Delta M_{W}\leq 10 MeV/c^2$ at the LHC: a forlorn hope?
Author(s) Krasny, M.W. (Paris U., VI-VII) ; Dydak, F. (CERN) ; Fayette, F. (Paris U., VI-VII) ; Placzek, W. (Jagiellonian U.) ; Siodmok, A. (Paris U., VI-VII ; Jagiellonian U.)
Publication 2010
Imprint 16 Apr 2010
Number of pages 26
Note Comments: 26 pages, 10 figures, to be submitted to European Physical Journal C
26 pages, 10 figures, to be submitted to European Physical Journal C
In: Eur. Phys. J. C 69 (2010) 379-397
DOI 10.1140/epjc/s10052-010-1417-0
Subject category Particle Physics - Experiment
Accelerator/Facility, Experiment CERN LHC
Abstract At the LHC, the measurement of the W mass with a precision of $ O(10) MeV/c^2$ is both mandatory and difficult. In the analysis strategies proposed so far, shortcuts have been made that are justified for proton-antiproton collisions at the Tevatron, but not for proton-proton collisions at the LHC. The root of the problem lies in the inadequate knowledge of parton density functions of the proton. It is argued that in order to reach a $10 MeV/c^2$ precision for the W mass, more precise parton density functions of the proton are needed, and an LHC-specific analysis strategy ought to be pursued. Proposals are made on both issues.
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 Record created 2010-04-16, last modified 2023-03-14


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