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Title: Multi-step production of a diphoton resonance

Abstract

Assuming that the mass peak at 750 GeV reported by the ATLAS and CMS Collaborations is due to a spin-0 particle that decays into two photons, we present two weakly-coupled renormalizable models that lead to different production mechanisms. In one model, a scalar particle produced through gluon fusion decays into the diphoton particle and a light, long-lived pseudoscalar. In another model, a $Z'$ boson produced from the annihilation of a strange-antistrange quark pair undergoes a cascade decay that leads to the diphoton particle and two sterile neutrinos. We show that various kinematic distributions may differentiate these models from the canonical model where the diphoton particle is directly produced in gluon fusion.

Authors:
; ORCiD logo; ORCiD logo
Publication Date:
Research Org.:
Fermi National Accelerator Lab. (FNAL), Batavia, IL (United States)
Sponsoring Org.:
USDOE Office of Science (SC), High Energy Physics (HEP) (SC-25)
OSTI Identifier:
1289929
Report Number(s):
FERMILAB-PUB-16-190-T; arXiv:1605.08772
Journal ID: ISSN 0954-3899; 1466131
DOE Contract Number:
AC02-07CH11359
Resource Type:
Journal Article
Resource Relation:
Journal Name: Journal of Physics. G, Nuclear and Particle Physics; Journal Volume: 44; Journal Issue: 6
Country of Publication:
United States
Language:
English
Subject:
72 PHYSICS OF ELEMENTARY PARTICLES AND FIELDS

Citation Formats

Dobrescu, Bogdan A., Fox, Patrick J., and Kearney, John. Multi-step production of a diphoton resonance. United States: N. p., 2017. Web. doi:10.1088/1361-6471/aa6598.
Dobrescu, Bogdan A., Fox, Patrick J., & Kearney, John. Multi-step production of a diphoton resonance. United States. doi:10.1088/1361-6471/aa6598.
Dobrescu, Bogdan A., Fox, Patrick J., and Kearney, John. 2017. "Multi-step production of a diphoton resonance". United States. doi:10.1088/1361-6471/aa6598. https://www.osti.gov/servlets/purl/1289929.
@article{osti_1289929,
title = {Multi-step production of a diphoton resonance},
author = {Dobrescu, Bogdan A. and Fox, Patrick J. and Kearney, John},
abstractNote = {Assuming that the mass peak at 750 GeV reported by the ATLAS and CMS Collaborations is due to a spin-0 particle that decays into two photons, we present two weakly-coupled renormalizable models that lead to different production mechanisms. In one model, a scalar particle produced through gluon fusion decays into the diphoton particle and a light, long-lived pseudoscalar. In another model, a $Z'$ boson produced from the annihilation of a strange-antistrange quark pair undergoes a cascade decay that leads to the diphoton particle and two sterile neutrinos. We show that various kinematic distributions may differentiate these models from the canonical model where the diphoton particle is directly produced in gluon fusion.},
doi = {10.1088/1361-6471/aa6598},
journal = {Journal of Physics. G, Nuclear and Particle Physics},
number = 6,
volume = 44,
place = {United States},
year = 2017,
month = 4
}
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