Visualisation of an event candidate to measure the mass of the W boson, detected by the ATLAS (A Toroidal LHC Apparatus) experiments at CERN (The European Organization for Nuclear Research) in July 2011. The event shows a W boson decaying into a muon (longer red dashed line) with missing transverse momentum (green dashed line) corresponding to the muon neutrino energy. The transverse mass of the W boson candidate was measured to be 71 gigaelectron volts. In the Standard Model the W boson mass is closely related to the masses of the top quark and Higgs boson. Measuring the W boson mass tests this prediction and the consistency of the model.
| px | px | dpi | = | cm | x | cm | = | MB |
Details
Creative#:
TOP29066716
Source:
達志影像
Authorization Type:
RM
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須由TPG 完整授權
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Restriction:
Editorial use only. This image may not be used to state or imply endorsement by CERN or CERN employees of any product, activity or service. Not to be used in a military context.
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