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High Energy Physics - Phenomenology

arXiv:1602.09099 (hep-ph)
[Submitted on 29 Feb 2016 (v1), last revised 21 Jun 2016 (this version, v2)]

Title:The $750$ GeV Diphoton Excesses in a Realistic D-brane Model

Authors:Tianjun Li, James A. Maxin, Van E. Mayes, Dimitri V. Nanopoulos
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Abstract:We study the diphoton excesses near $750$ GeV recently reported by the ATLAS and CMS collaborations within the context of a phenomenologically interesting intersecting/magnetized D-brane model on a toroidal orientifold. It is shown that the model contains a SM singlet scalar as well as vector-like quarks and leptons. In addition, it is shown that the singlet scalar has Yukawa couplings with vector-like quarks and leptons such that it may be produced in proton-proton collisions via gluon fusion as well as decay to diphotons through loops involving the vector-like quarks. Moreover, the required vector-like quarks and leptons may appear in complete $SU(5)$ multiplets so that gauge coupling unification may be maintained. Finally, it is shown that the diphoton signal may be explained within the model.
Comments: 12 Tables, 1 Figure, 24 Pages. Version accepted for publication in Physical Review D
Subjects: High Energy Physics - Phenomenology (hep-ph); High Energy Physics - Theory (hep-th)
Report number: ACT-03-16, MI-TH-1611
Cite as: arXiv:1602.09099 [hep-ph]
  (or arXiv:1602.09099v2 [hep-ph] for this version)
  https://doi.org/10.48550/arXiv.1602.09099
Journal reference: Phys. Rev. D 94, 025002 (2016)
Related DOI: https://doi.org/10.1103/PhysRevD.94.025002

Submission history

From: Van Mayes [view email]
[v1] Mon, 29 Feb 2016 19:02:00 UTC (72 KB)
[v2] Tue, 21 Jun 2016 15:06:32 UTC (72 KB)
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