Diphoton excess at 750 GeV: gluon–gluon fusion or quark–antiquark annihilation?
Author(s)Gao, Jun; Zhang, Hao; Zhu, Hua Xing
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Recently, ATLAS and CMS collaborations reported an excess in the measurement of diphoton events, which can be explained by a new resonance with a mass around 750 GeV. In this work, we explored the possibility of identifying if the hypothetical new resonance is produced through gluon–gluon fusion or quark–antiquark annihilation, or tagging the beam. Three different observables for beam tagging, namely the rapidity and transverse-momentum distribution of the diphoton, and one tagged bottom-jet cross section, are proposed. Combining the information gained from these observables, a clear distinction of the production mechanism for the diphoton resonance is promising.
DepartmentMassachusetts Institute of Technology. Center for Theoretical Physics
The European Physical Journal C
Springer Berlin Heidelberg
Gao, Jun, Hao Zhang, and Hua Xing Zhu. “Diphoton Excess at 750 GeV: Gluon–gluon Fusion or Quark–antiquark Annihilation?” The European Physical Journal C 76.6 (2016): n. pag.
Final published version