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Title: Perturbative unitarity constraints on gauge portals

Abstract

Dark matter that was once in thermal equilibrium with the Standard Model is generally prohibited from obtaining all of its mass from the electroweak phase transition. This implies a new scale of physics and mediator particles to facilitate dark matter annihilation. In this work, we focus on dark matter that annihilates through a generic gauge boson portal. We show how partial wave unitarity places upper bounds on the dark gauge boson, dark Higgs and dark matter masses. Outside of well-defined fine-tuned regions, we find an upper bound of 9 TeV for the dark matter mass when the dark Higgs and dark gauge bosons both facilitate the dark matter annihilations. In this scenario, the upper bound on the dark Higgs and dark gauge boson masses are 10 TeV and 16 TeV, respectively. When only the dark gauge boson facilitates dark matter annihilations, we find an upper bound of 3 TeV and 6 TeV for the dark matter and dark gauge boson, respectively. Overall, using the gauge portal as a template, we describe a method to not only place upper bounds on the dark matter mass but also on the new particles with Standard Model quantum numbers. Here, we briefly discuss themore » reach of future accelerator, direct and indirect detection experiments for this class of models.« less

Authors:
 [1];  [2];  [3]
  1. Institut fur Physik (THEP) Johannes Gutenberg-Univ., Mainz (Germany); SLAC National Accelerator Lab., Menlo Park, CA (United States)
  2. Santa Cruz Institute for Particle Physics and Dept. of Physics, Santa Cruz, CA (United States)
  3. SLAC National Accelerator Lab., Menlo Park, CA (United States)
Publication Date:
Research Org.:
SLAC National Accelerator Lab., Menlo Park, CA (United States)
Sponsoring Org.:
USDOE
OSTI Identifier:
1418010
Alternate Identifier(s):
OSTI ID: 1549231
Grant/Contract Number:  
ACO2-76SF00515; FG02-04ER41286; NSF PHY11-25915; NSF-PHY-0705682; PRISMA-EXC 1098
Resource Type:
Accepted Manuscript
Journal Name:
Physics of the Dark Universe
Additional Journal Information:
Journal Volume: 18; Journal Issue: C; Journal ID: ISSN 2212-6864
Publisher:
Elsevier
Country of Publication:
United States
Language:
English
Subject:
72 PHYSICS OF ELEMENTARY PARTICLES AND FIELDS; Dark matter models

Citation Formats

El Hedri, Sonia, Shepherd, William, and Walker, Devin G. E. Perturbative unitarity constraints on gauge portals. United States: N. p., 2017. Web. doi:10.1016/j.dark.2017.09.006.
El Hedri, Sonia, Shepherd, William, & Walker, Devin G. E. Perturbative unitarity constraints on gauge portals. United States. doi:10.1016/j.dark.2017.09.006.
El Hedri, Sonia, Shepherd, William, and Walker, Devin G. E. Tue . "Perturbative unitarity constraints on gauge portals". United States. doi:10.1016/j.dark.2017.09.006. https://www.osti.gov/servlets/purl/1418010.
@article{osti_1418010,
title = {Perturbative unitarity constraints on gauge portals},
author = {El Hedri, Sonia and Shepherd, William and Walker, Devin G. E.},
abstractNote = {Dark matter that was once in thermal equilibrium with the Standard Model is generally prohibited from obtaining all of its mass from the electroweak phase transition. This implies a new scale of physics and mediator particles to facilitate dark matter annihilation. In this work, we focus on dark matter that annihilates through a generic gauge boson portal. We show how partial wave unitarity places upper bounds on the dark gauge boson, dark Higgs and dark matter masses. Outside of well-defined fine-tuned regions, we find an upper bound of 9 TeV for the dark matter mass when the dark Higgs and dark gauge bosons both facilitate the dark matter annihilations. In this scenario, the upper bound on the dark Higgs and dark gauge boson masses are 10 TeV and 16 TeV, respectively. When only the dark gauge boson facilitates dark matter annihilations, we find an upper bound of 3 TeV and 6 TeV for the dark matter and dark gauge boson, respectively. Overall, using the gauge portal as a template, we describe a method to not only place upper bounds on the dark matter mass but also on the new particles with Standard Model quantum numbers. Here, we briefly discuss the reach of future accelerator, direct and indirect detection experiments for this class of models.},
doi = {10.1016/j.dark.2017.09.006},
journal = {Physics of the Dark Universe},
number = C,
volume = 18,
place = {United States},
year = {2017},
month = {10}
}

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Cited by: 2 works
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