750 GeV diphoton excess: Difference between revisions
Created page with "The '''750 GeV diphoton excess''' in particle physics was an anomaly in data collected at the Large Hadron Collider (LHC) in 2015, which could have been an indication of a new particle or resonance.<ref name='1606.03833'> {{cite journal|last1=Aaboud |first1=M. |collaboration=ATLAS Collaboration |display-authors=etal |date=September 2016 |title=Search for resonances in diphoton events at √s = 13 TeV with the ATLAS detector |journal=Journal of High Energy P..." |
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}}</ref> In the interval between the December 2015 and August 2016 results, the anomaly generated considerable interest in the scientific community, including about 500 theoretical studies.<ref>{{Cite journal|last=Garisto|first=Robert|date=2016-04-12|title=Editorial: Theorists React to the CERN 750 GeV Diphoton Data|journal=Physical Review Letters|language=en|volume=116|issue=15|article-number=150001|doi=10.1103/PhysRevLett.116.150001 | }}</ref> In the interval between the December 2015 and August 2016 results, the anomaly generated considerable interest in the scientific community, including about 500 theoretical studies.<ref>{{Cite journal|last=Garisto|first=Robert|date=2016-04-12|title=Editorial: Theorists React to the CERN 750 GeV Diphoton Data|journal=Physical Review Letters|language=en|volume=116|issue=15|article-number=150001|doi=10.1103/PhysRevLett.116.150001|doi-access=free}}</ref><ref>{{Cite journal|last1=Cao|first1=Junjie|last2=Shang|first2=Liangliang|last3=Su|first3=Wei|last4=Zhang|first4=Yang|last5=Zhu|first5=Jinya|year=2016|title=Interpreting the 750 GeV diphoton excess in the minimal dilaton model|journal=The European Physical Journal C|language=en|volume=76|issue=5|page=239|doi=10.1140/epjc/s10052-016-4098-5|arxiv=1601.02570|doi-access=free}}</ref><ref name=":0"> | ||
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}}</ref><ref>{{Cite web|date=2021-01-14|title=A decade in LHC publications|url=https://cerncourier.com/a/a-decade-in-lhc-publications/|access-date=2021-01-15|website=CERN Courier|language=en-GB}}</ref> The hypothetical particle was denoted by the Greek letter [[wikipedia:Digamma|Ϝ]] (pronounced digamma) in the scientific literature, owing to the decay channel in which the anomaly occurred.<ref name= | }}</ref><ref>{{Cite web|date=2021-01-14|title=A decade in LHC publications|url=https://cerncourier.com/a/a-decade-in-lhc-publications/|access-date=2021-01-15|website=CERN Courier|language=en-GB}}</ref> The hypothetical particle was denoted by the Greek letter [[wikipedia:Digamma|Ϝ]] (pronounced digamma) in the scientific literature, owing to the decay channel in which the anomaly occurred.<ref name="1605.09401"> | ||
Strumia, Alessandro (5 Aug 2016). "Interpreting the 750 GeV digamma excess: A review". [https://arxiv.org/abs/1605.09401 arXiv:1605.09401].</ref> The data, however, were always less than five standard deviations (sigma) different from that expected if there was no new particle, and, as such, the anomaly never reached the accepted level of statistical significance required to announce a discovery in particle physics.<ref> | |||
Lyons, Louis (4 Oct 2013). "Discovering the Significance of 5 sigma". [https://arxiv.org/abs/1310.1284 <nowiki>arXiv:1310.1284 [physics.data-an]</nowiki>].</ref> After the August 2016 results, interest in the anomaly sank as it was considered a statistical fluctuation.<ref> | |||
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}}</ref> | }}</ref> Indeed, a Bayesian analysis of the anomaly found that whilst data collected in 2015 constituted "''substantial''" evidence for the digamma on the Jeffreys scale, data collected in 2016 combined with that collected in 2015 was evidence against the digamma.<ref>{{cite journal|last1=Fowlie|first1=Andrew|title=Bayes-factor of the ATLAS diphoton excess|journal=The European Physical Journal Plus|date=2016|volume=132|issue=1|page=46|doi=10.1140/epjp/i2017-11340-1|arxiv=1607.06608}}</ref> | ||
Indeed, a | |||
For more information, see [[wikipedia:750 GeV diphoton excess|Wikipedia]]. | For more information, see [[wikipedia:750 GeV diphoton excess|Wikipedia]]. | ||
==References== | |||
{{reflist}} | |||
[[Category:Fun facts and anecdotes]] | [[Category:Fun facts and anecdotes]] | ||
[[Category:Pages linking to Wikipedia]] | |||
Latest revision as of 13:23, 5 February 2026
The 750 GeV diphoton excess in particle physics was an anomaly in data collected at the Large Hadron Collider (LHC) in 2015, which could have been an indication of a new particle or resonance.[1][2] The anomaly was absent in data collected in 2016, suggesting that the diphoton excess was a statistical fluctuation.[3][4] In the interval between the December 2015 and August 2016 results, the anomaly generated considerable interest in the scientific community, including about 500 theoretical studies.[5][6][7][8] The hypothetical particle was denoted by the Greek letter Ϝ (pronounced digamma) in the scientific literature, owing to the decay channel in which the anomaly occurred.[9] The data, however, were always less than five standard deviations (sigma) different from that expected if there was no new particle, and, as such, the anomaly never reached the accepted level of statistical significance required to announce a discovery in particle physics.[10] After the August 2016 results, interest in the anomaly sank as it was considered a statistical fluctuation.[11] Indeed, a Bayesian analysis of the anomaly found that whilst data collected in 2015 constituted "substantial" evidence for the digamma on the Jeffreys scale, data collected in 2016 combined with that collected in 2015 was evidence against the digamma.[12]
For more information, see Wikipedia.
References
- ↑ "Search for resonances in diphoton events at √s = 13 TeV with the ATLAS detector" (September 2016). Journal of High Energy Physics 2016 (9). doi:. w:Bibcode: 2016JHEP...09..001A.
- ↑ "Search for resonant production of high-mass photon pairs in proton-proton collisions at √s = 8 and 13 TeV" (28 July 2016). Physical Review Letters 117 (5). doi:.
- ↑ "Search for resonant production of high mass photon pairs using 12.9 fb−1 of proton-proton collisions at √s = 13 TeV and combined interpretation of searches at 8 and 13 TeV". 2016 – via CERN Document Server.
- ↑ Search for scalar diphoton resonances with 15.4 fb−1 of data collected at √s = 13 TeV in 2015 and 2016 with the ATLAS detector. 2016 – via CERN Document Server.
- ↑ Garisto, Robert (2016-04-12). "Editorial: Theorists React to the CERN 750 GeV Diphoton Data" (in en). Physical Review Letters 116 (15). doi:.
- ↑ "Interpreting the 750 GeV diphoton excess in the minimal dilaton model" (in en) (2016). The European Physical Journal C 76 (5). doi:.
- ↑ "#Run2Seminar and subsequent γγ-related arXiv submissions". jsfiddle.net. Retrieved 2016-08-11.
- ↑ "A decade in LHC publications". CERN Courier. 2021-01-14. Retrieved 2021-01-15.
- ↑ Strumia, Alessandro (5 Aug 2016). "Interpreting the 750 GeV digamma excess: A review". arXiv:1605.09401.
- ↑ Lyons, Louis (4 Oct 2013). "Discovering the Significance of 5 sigma". arXiv:1310.1284 [physics.data-an].
- ↑ "Chicago sees floods of LHC data and new results at ICHEP" (2016-08-05).
- ↑ "Bayes-factor of the ATLAS diphoton excess" (2016). The European Physical Journal Plus 132 (1). doi:.