Higgs boson
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| Composeetion | Elementar pairticle |
|---|---|
| Stateestics | Bosonic |
| Status | A Higgs boson o mass ≈125 GeV wis tentatively confirmed bi CERN on 14 Mairch 2013,[1][2][3] awtho it is unclear as yet which model the pairticle best supports or whether multiple Higgs bosons exeest.[2] |
| Seembol |
H0 |
| Theorised | R. Brout, F. Englert, P. Higgs, G. S. Guralnik, C. R. Hagen, an T. W. B. Kibble (1964) |
| Discovered | Large Hadron Collider (2011–2013) |
| Mass | 125.09±0.21 (stat.)±0.11 (syst.) GeV/c2 (CMS+ATLAS)[4] |
| Mean lifetime |
1.56×10−22 s [Note 2] (predictit) |
| Decays intae |
bottom-antibottom pair (predictit) |
| Electric chairge | 0 e |
| Colour chairge | 0 |
| Spin | 0 (tentatively confirmed)[1] |
| Weak isospin | -1/2 |
| Weak hypercharge | +1 |
| Parity | +1 (tentatively confirmed)[1] |
The Higgs boson is an elementar pairticle in the Staundart Model o pairticle pheesics. It is the quantum excitation o the Higgs field,[6][7] a fundamental field o crucial importance tae pairticle pheesics theory[7] first suspectit tae exeest in the 1960s. Unlik ither kent fields such as the electromagnetic field, it haes a non-zero constant value in vacuum. The quaisten o the Higgs field's exeestence acame the last unverified pairt o the Staindart Model o pairticle pheesics, an for several decades wis conseedert "the central problem in pairticle pheesics".[8][9]
Notes[eedit | eedit soorce]
- ↑ Note that such events an aa occur due tae ither processes. Detection involves a stateestically signeeficant excess o such events at speceefic energies.
- ↑ In the Staundart Model, the tot decay width o a Higgs boson wi a mass o 126 GeV/c2 is predictit tae be 4.21×10−3 GeV.[5] The mean lifetime is gien bi .
References[eedit | eedit soorce]
- ↑ 1.0 1.1 1.2 O'Luanaigh, C. (14 March 2013). "New results indicate that new particle is a Higgs boson". CERN. Retrieved 2013-10-09.
- ↑ 2.0 2.1 Bryner, J. (14 March 2013). "Particle confirmed as Higgs boson". NBC News. Retrieved 2013-03-14.
- ↑ Heilprin, J. (14 March 2013). "Higgs Boson Discovery Confirmed After Physicists Review Large Hadron Collider Data at CERN". The Huffington Post. Archived frae the oreeginal on 17 March 2013. Retrieved 14 March 2013.
- ↑ ATLAS; CMS (26 March 2015). "Combined Measurement of the Higgs Boson Mass in pp Collisions at √s=7 and 8 TeV with the ATLAS and CMS Experiments". arXiv:1503.07589.
- ↑ LHC Higgs Cross Section Working Group; Dittmaier; Mariotti; Passarino; Tanaka; Alekhin; Alwall; Bagnaschi; Banfi (2012). "Handbook of LHC Higgs Cross Sections: 2. Differential Distributions". CERN Report 2 (Tables A.1 – A.20). 1201: 3084. arXiv:1201.3084
. Bibcode:2012arXiv1201.3084L.
- ↑ Onyisi, P. (23 October 2012). "Higgs boson FAQ". University of Texas ATLAS group. Retrieved 2013-01-08.
- ↑ 7.0 7.1 Strassler, M. (12 October 2012). "The Higgs FAQ 2.0". ProfMattStrassler.com. Retrieved 2013-01-08.
[Q] Why do particle physicists care so much about the Higgs particle?
[A] Well, actually, they don’t. What they really care about is the Higgs field, because it is so important. [emphasis in original] - ↑ José Luis Lucio; Arnulfo Zepeda (1987). Proceedings of the II Mexican School of Particles and Fields, Cuernavaca-Morelos, 1986. World Scientific. p. 29. ISBN 9971504340.
- ↑ Gunion, Dawson, Kane, and Haber (199). The Higgs Hunter's Guide (1st ed.). pp. 11 (?). ISBN 978-0-7867-4318-6. – quoted as being in the first (1990) edition of the book by Peter Higgs in his talk "My Life as a Boson", 2001, ref#25.
