Details

Autor(en) / Beteiligte

• Altmannshofer, Wolfgang
• Galloway, Jamison
• Gori, Stefania
• Kagan, Alexander L.
• Martin, Adam
• Zupan, Jure

Titel

750 GeV diphoton excess

Ist Teil von

• Physical review. D, 2016-05, Vol.93 (9), Article 095015

Ort / Verlag

United States: American Physical Society

Erscheinungsjahr

2016

Link zum Volltext

Quelle

Alma/SFX Local Collection

Beschreibungen/Notizen

• We explore several perturbative scenarios in which the diphoton excess at 750 GeV can potentially be explained: a scalar singlet, a two Higgs doublet model (2HDM), a 2HDM with an extra singlet, and the decays of heavier resonances, both vector and scalar. We draw the following conclusions: (i) due to gauge invariance a 750 GeV scalar singlet can accommodate the observed excess more readily than a scalar SU(2) sub()Ldoublet; (ii) scalar singlet production via gluon fusion is one option, however, vector boson fusion can also provide a large enough rate, (iii) 2HDMs with an extra singlet and no extra fermions can only give a signal in a severely tuned region of the parameter space; (iv) decays of heavier resonances can give a large enough diphoton signal at 750 GeV, while simultaneously explaining the absence of a signal at 8 TeV.