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.
Date issued
2016-06Department
Massachusetts Institute of Technology. Center for Theoretical PhysicsJournal
The European Physical Journal C
Publisher
Springer Berlin Heidelberg
Citation
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.
Version: Final published version
ISSN
1434-6044
1434-6052