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A New Boson with a Mass of 125 GeV Observed with the CMS Experiment at the Large Hadron Collider

Chatrchyan, S.
•
Khachatryan, V.
•
Sirunyan, A. M.
altro
Wenman, D.
2012
  • journal article

Periodico
SCIENCE
Abstract
The Higgs boson was postulated nearly five decades ago within the framework of the standard model of particle physics and has been the subject of numerous searches at accelerators around the world. Its discovery would verify the existence of a complex scalar field thought to give mass to three of the carriers of the electroweak force—the W+, W–, and Z0 bosons—as well as to the fundamental quarks and leptons. The CMS Collaboration has observed, with a statistical significance of five standard deviations, a new particle produced in proton-proton collisions at the Large Hadron Collider at CERN. The evidence is strongest in the diphoton and four-lepton (electrons and/or muons) final states, which provide the best mass resolution in the CMS detector. The probability of the observed signal being due to a random fluctuation of the background is about 1 in 3 × 10^6. The new particle is a boson with spin not equal to 1 and has a mass of about 125 giga–electron volts. Although its measured properties are, within the uncertainties of the present data, consistent with those expected of the Higgs boson, more data are needed to elucidate the precise nature of the new particle.
DOI
10.1126/science.1230816
WOS
WOS:000312533100042
Archivio
http://hdl.handle.net/11368/2642471
info:eu-repo/semantics/altIdentifier/scopus/2-s2.0-84871443529
Diritti
metadata only access
Soggetti
  • PARTICLE PHYSICS

  • LARGE HADRON COLLIDER...

  • CMS

Scopus© citazioni
70
Data di acquisizione
Jun 14, 2022
Vedi dettagli
Web of Science© citazioni
69
Data di acquisizione
Mar 26, 2024
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