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Diphotons from diaxions
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DOI：10.1007/JHEP05(2016)077.png)
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摘要
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We study models in which the 750 GeV diphoton excess is due to a scalar decaying to two pseudo-Nambu-Goldstone bosons that subsequently decay into two pairs of highly boosted photons, misidentified as individual photons. Performing a model independent analysis we find that, with axion mass around 200 MeV, this class of theories can naturally explain the observed signal with a large width, without violating monojet constraints. At the same time the requirement of a prompt axion decay can be satisfied only with a relatively large axion-photon coupling, leading to many new charged particles at the TeV scale. However, the required multiplicities of such fields is still moderately reduced relative to models with direct diphoton production.
Keyword:
Beyond Standard Model
Technicolor and Composite Models
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期刊
IF:
5.5
论文数:
4.0W
被引数:
13.7W
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An extension of two-Higgs-doublet model and the excesses of 750 GeV diphoton, muon g-2 and h → μτ.png)
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PHYSICS LETTERS BIF4.5
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