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Title: 750 GeV diphoton excesses in a realistic D-brane model

Authors:
; ; ;
Publication Date:
Sponsoring Org.:
USDOE
OSTI Identifier:
1260292
Grant/Contract Number:
FG02-13ER42020; SC0010813
Resource Type:
Journal Article: Publisher's Accepted Manuscript
Journal Name:
Physical Review D
Additional Journal Information:
Journal Volume: 94; Journal Issue: 2; Related Information: CHORUS Timestamp: 2017-06-24 13:52:51; Journal ID: ISSN 2470-0010
Publisher:
American Physical Society
Country of Publication:
United States
Language:
English

Citation Formats

Li, Tianjun, Maxin, James A., Mayes, Van E., and Nanopoulos, Dimitri V.. 750 GeV diphoton excesses in a realistic D-brane model. United States: N. p., 2016. Web. doi:10.1103/PhysRevD.94.025002.
Li, Tianjun, Maxin, James A., Mayes, Van E., & Nanopoulos, Dimitri V.. 750 GeV diphoton excesses in a realistic D-brane model. United States. doi:10.1103/PhysRevD.94.025002.
Li, Tianjun, Maxin, James A., Mayes, Van E., and Nanopoulos, Dimitri V.. 2016. "750 GeV diphoton excesses in a realistic D-brane model". United States. doi:10.1103/PhysRevD.94.025002.
@article{osti_1260292,
title = {750 GeV diphoton excesses in a realistic D-brane model},
author = {Li, Tianjun and Maxin, James A. and Mayes, Van E. and Nanopoulos, Dimitri V.},
abstractNote = {},
doi = {10.1103/PhysRevD.94.025002},
journal = {Physical Review D},
number = 2,
volume = 94,
place = {United States},
year = 2016,
month = 7
}

Journal Article:
Free Publicly Available Full Text
Publisher's Version of Record at 10.1103/PhysRevD.94.025002

Citation Metrics:
Cited by: 2works
Citation information provided by
Web of Science

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  • Effective low energy models arising in the context of D-brane configurations with standard model (SM) gauge symmetry extended by several gauged Abelian factors are discussed. The models are classified according to their hypercharge embeddings consistent with the SM spectrum hypercharge assignment. Particular cases are analyzed according to their perspectives and viability as low energy effective field theory candidates. The resulting string scale is determined by means of a two-loop renormalization group calculation. Their implications in Yukawa couplings, neutrinos and flavor changing processes are also presented.
  • Cited by 2
  • Weakly coupled models for the 750 GeV diphoton resonance often invoke new particles carrying both color and/or electric charges to mediate loop-induced couplings of the resonance to two gluons and two photons. The new colored particles may not be stable and could decay into final states containing standard model particles. We consider an electroweak doublet of vectorlike quarks (VLQs) carrying electric charges of 5/3 and 2/3, respectively, which mediate the loop-induced couplings of the 750 GeV resonance. If the VLQ has a mass at around 1 TeV, it naturally gives rise to the observed diphoton signal strength while all couplingsmore » remain perturbative up to a high scale. At the same time, if the charge-5/3 VLQ decays into final states containing top quark and W boson, it would contribute to the multilepton excesses observed in both run 1 and run 2 data. It is also possible to incorporate a dark matter candidate in the decay final states to explain the observed relic density.« less
  • The ATLAS Collaboration has reported excesses in diboson invariant mass searches of new resonances around 2TeV, which might be a prediction of new physics around that mass range. We interpret these results in the context of a modified stealth doublet model where the extra Higgs doublet has a Yukawa interaction with the first generation quarks, and show that the heavy CP-even Higgs boson can naturally explain the excesses in the WW and ZZ channels with a small Yukawa coupling, ξ ~ 0.15, and a tiny mixing angle with the SM Higgs boson, α ~ 0.05. Moreover, the model satisfies constraintsmore » from colliders and electroweak precision measurements.« less
  • Cited by 10