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Title: Illuminating dark photons with high-energy colliders

Abstract

High-energy colliders offer a unique sensitivity to dark photons, the mediators of a broken dark U(1) gauge theory that kinetically mixes with the Standard Model (SM) hypercharge. Dark photons can be detected in the exotic decay of the 125 GeV Higgs boson, h→ZZ D →4ℓ, and in Drell-Yan events, pp→Z D → ℓℓ. If the dark U(1) is broken by a hidden-sector Higgs mechanism, then mixing between the dark and SM Higgs bosons also allows the exotic decay h → Z D Z D → 4ℓ. We show that the 14 TeV LHC and a 100 TeV proton-proton collider provide powerful probes of both exotic Higgs decay channels. In the case of kinetic mixing alone, direct Drell-Yan production offers the best sensitivity to Z D, and can probe ϵ ≳ 9 × 10–4 (4 × 10–4) at the HL-LHC (100 TeV pp collider). The exotic Higgs decay h → ZZ D offers slightly weaker sensitivity, but both measurements are necessary to distinguish the kinetically mixed dark photon from other scenarios. If Higgs mixing is also present, then the decay h → Z D Z D can allow sensitivity to the Z D for ϵ ≳ 10–9 – 10–6 (10–10more » 10–7) for the mass range 2mμZDh/2 by searching for displaced dark photon decays. We also compare the Z D sensitivity at pp colliders to the indirect, but model-independent, sensitivity of global fits to electroweak precision observables. Here, we perform a global electroweak fit of the dark photon model, substantially updating previous work in the literature. Electroweak precision measurements at LEP, Tevatron, and the LHC exclude ϵ as low as 3 × 10–2. Sensitivity can be improved by up to a factor of ~ 2 with HL-LHC data, and an additional factor of ~ 4 with ILC/GigaZ data.« less

Authors:
 [1];  [2];  [3];  [4]
  1. Univ. of Maryland, College Park, MD (United States). Maryland Center for Fundamental Physics
  2. Stony Brook Univ., Stony Brook, NY (United States). C.N. Yang Inst. for Theoretical Physics
  3. Perimeter Inst. for Theoretical Physics, Waterloo, ON (Canada)
  4. Univ. of Illinois, Urbana, IL (United States). Dept. of Physics
Publication Date:
Research Org.:
Stony Brook Univ., NY (United States)
Sponsoring Org.:
USDOE
OSTI Identifier:
1452791
Grant/Contract Number:  
SC0008061
Resource Type:
Accepted Manuscript
Journal Name:
Journal of High Energy Physics (Online)
Additional Journal Information:
Journal Name: Journal of High Energy Physics (Online); Journal Volume: 2015; Journal Issue: 2; Journal ID: ISSN 1029-8479
Publisher:
Springer Berlin
Country of Publication:
United States
Language:
English
Subject:
72 PHYSICS OF ELEMENTARY PARTICLES AND FIELDS; Higgs Physics; Beyond Standard Model; Gauge Symmetry

Citation Formats

Curtin, David, Essig, Rouven, Gori, Stefania, and Shelton, Jessie. Illuminating dark photons with high-energy colliders. United States: N. p., 2015. Web. doi:10.1007/JHEP02(2015)157.
Curtin, David, Essig, Rouven, Gori, Stefania, & Shelton, Jessie. Illuminating dark photons with high-energy colliders. United States. https://doi.org/10.1007/JHEP02(2015)157
Curtin, David, Essig, Rouven, Gori, Stefania, and Shelton, Jessie. Tue . "Illuminating dark photons with high-energy colliders". United States. https://doi.org/10.1007/JHEP02(2015)157. https://www.osti.gov/servlets/purl/1452791.
@article{osti_1452791,
title = {Illuminating dark photons with high-energy colliders},
author = {Curtin, David and Essig, Rouven and Gori, Stefania and Shelton, Jessie},
abstractNote = {High-energy colliders offer a unique sensitivity to dark photons, the mediators of a broken dark U(1) gauge theory that kinetically mixes with the Standard Model (SM) hypercharge. Dark photons can be detected in the exotic decay of the 125 GeV Higgs boson, h→ZZ D →4ℓ, and in Drell-Yan events, pp→Z D → ℓℓ. If the dark U(1) is broken by a hidden-sector Higgs mechanism, then mixing between the dark and SM Higgs bosons also allows the exotic decay h → Z D Z D → 4ℓ. We show that the 14 TeV LHC and a 100 TeV proton-proton collider provide powerful probes of both exotic Higgs decay channels. In the case of kinetic mixing alone, direct Drell-Yan production offers the best sensitivity to Z D, and can probe ϵ ≳ 9 × 10–4 (4 × 10–4) at the HL-LHC (100 TeV pp collider). The exotic Higgs decay h → ZZ D offers slightly weaker sensitivity, but both measurements are necessary to distinguish the kinetically mixed dark photon from other scenarios. If Higgs mixing is also present, then the decay h → Z D Z D can allow sensitivity to the Z D for ϵ ≳ 10–9 – 10–6 (10–10 – 10–7) for the mass range 2mμZDh/2 by searching for displaced dark photon decays. We also compare the Z D sensitivity at pp colliders to the indirect, but model-independent, sensitivity of global fits to electroweak precision observables. Here, we perform a global electroweak fit of the dark photon model, substantially updating previous work in the literature. Electroweak precision measurements at LEP, Tevatron, and the LHC exclude ϵ as low as 3 × 10–2. Sensitivity can be improved by up to a factor of ~ 2 with HL-LHC data, and an additional factor of ~ 4 with ILC/GigaZ data.},
doi = {10.1007/JHEP02(2015)157},
journal = {Journal of High Energy Physics (Online)},
number = 2,
volume = 2015,
place = {United States},
year = {2015},
month = {2}
}

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Lepton flavor universality violation without new sources of quark flavor violation
text, January 2017


Searching for Long-lived Particles: A Compact Detector for Exotics at LHCb
text, January 2017


Discovering uncolored naturalness in exotic Higgs decays
journal, December 2015

  • Curtin, David; Verhaaren, Christopher B.
  • Journal of High Energy Physics, Vol. 2015, Issue 12
  • DOI: 10.1007/jhep12(2015)072

Homeopathic Dark Matter, or how diluted heavy substances produce high energy cosmic rays
journal, February 2019

  • Cirelli, Marco; Gouttenoire, Yann; Petraki, Kalliopi
  • Journal of Cosmology and Astroparticle Physics, Vol. 2019, Issue 02
  • DOI: 10.1088/1475-7516/2019/02/014

Looking for the WIMP next door
journal, February 2018

  • Evans, Jared A.; Gori, Stefania; Shelton, Jessie
  • Journal of High Energy Physics, Vol. 2018, Issue 2
  • DOI: 10.1007/jhep02(2018)100

Search for Dark Photons Produced in 13 TeV p p Collisions
journal, February 2018


Searching in CMS open data for dimuon resonances with substantial transverse momentum
journal, July 2019


Examining the origin of dark matter mass at colliders
text, January 2016


Search for dark matter at colliders
journal, March 2017

  • Buchmueller, Oliver; Doglioni, Caterina; Wang, Lian-Tao
  • Nature Physics, Vol. 13, Issue 3
  • DOI: 10.1038/nphys4054

Kinetic mixing, dark photons and an extra dimension. Part I
journal, July 2018


Point Sources from Dissipative Dark Matter
text, January 2017


Kinetic mixing and portal matter phenomenology
journal, June 2019


Analyzing the Discovery Potential for Light Dark Matter
journal, December 2015


Long-lived particles at the energy frontier: the MATHUSLA physics case
journal, October 2019

  • Curtin, David; Drewes, Marco; McCullough, Matthew
  • Reports on Progress in Physics, Vol. 82, Issue 11
  • DOI: 10.1088/1361-6633/ab28d6

Thick Branes in Extra Dimensions and Suppressed Dark Couplings
text, January 2019


Search for dark matter at colliders
text, January 2019


The dispirited case of gauged U(1)B − L dark matter
journal, August 2018

  • Escudero, Miguel; Witte, Samuel J.; Rius, Nuria
  • Journal of High Energy Physics, Vol. 2018, Issue 8
  • DOI: 10.1007/jhep08(2018)190

Correlated signals at the energy and intensity frontiers from non-Abelian kinetic mixing
journal, September 2016


Higgs boson decays to dark photons through the vectorized lepton portal
journal, June 2017

  • Lu, Qianshu; Morrissey, David E.; Wijangco, Alexander M.
  • Journal of High Energy Physics, Vol. 2017, Issue 6
  • DOI: 10.1007/jhep06(2017)138

Coscattering/Coannihilation Dark Matter in a Fraternal Twin Higgs Model
text, January 2018


Towards the final word on neutralino dark matter
journal, March 2016


Gamma-rays from dark showers with twin Higgs models
journal, May 2016

  • Freytsis, Marat; Knapen, Simon; Robinson, Dean J.
  • Journal of High Energy Physics, Vol. 2016, Issue 5
  • DOI: 10.1007/jhep05(2016)018

Point sources from dissipative dark matter
journal, December 2017


Lepton flavor universality violation without new sources of quark flavor violation
journal, February 2018


Proposed Inclusive Dark Photon Search at LHCb
journal, June 2016


Dark-photon searches via Z H production at e + e colliders
journal, September 2017


Constraining portals with displaced Higgs decay searches at the LHC
journal, October 2015


Examining the origin of dark matter mass at colliders
journal, September 2018


Search for a Narrow Resonance Lighter than 200 GeV Decaying to a Pair of Muons in Proton-Proton Collisions at s = 13 TeV
journal, April 2020


Exotic Quarks in Twin Higgs Models
text, January 2015


Is it possible to discover a dark matter particle with an accelerator?
journal, September 2016


Towards a UV model of kinetic mixing and portal matter
journal, January 2020


Detector-size upper bounds on dark hadron lifetime from cosmology
journal, May 2019


Searching for dark photons at the LHeC and FCC-he
journal, January 2020


New window to millicharged particles at the LHC
journal, August 2015


Searching for Dark Photons at the LHeC and FCC-he
text, January 2019


Higgs-boson production in association with a dark photon in e+e− collisions
journal, June 2015

  • Biswas, Sanjoy; Gabrielli, Emidio; Heikinheimo, Matti
  • Journal of High Energy Physics, Vol. 2015, Issue 6
  • DOI: 10.1007/jhep06(2015)102

Search for Dark Photons Produced in 13 TeV pp Collisions
text, January 2018

  • Collaboration, LHCb; Bernet, R.; Müller, K.
  • American Physical Society
  • DOI: 10.5167/uzh-160293

Prospects for Detecting light bosons at the FCC-ee and CEPC
text, January 2018